The Atlantic Coast Observer Network - Virginia/North Carolina/South Carolina
http://members.cox.net/wxr/acon.htm

SUMMARY OF CLIMATOLOGICAL DATA 


MAY 2009


...RAINFALL & TEMPERATURES ABOVE NORMAL
ALMOST ALL AREAS... ...
  • EXPANDING CLIMATE SERVICES AT THE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION (NOAA): Developing the National Climate Service    Check the details and testimonials at http://science.house.gov:80/publications/hearings_markups_details.aspx?newsid=2449.


  • nowCOAST  UPDATE    Kevin Shaw of ACON - DC, MD, DE sends this note and info: "Just got this announcement from my friend John Kelley (John.Kelley@noaa.gov) who is the head Meteorologist on the nowCOAST development team. Many of you have used this program in the past. Try it again with these new enhancements if you get a chance. Feel free to give John any and all feedback on what you see, and any problems or comments you might have. Thanks!" The new version of nowCOAST was released yesterday afternoon. The new version added surface weather forecasts from NWS' National Digital Forecast Database for HI, AK, and PR and hourly surface wind and air temperature analyses (5 km resolution) from NWS/NCEP's Real-Time Mesoscale Analysis (RTMA) System for CONUS. For detailed info on the new version please see http://nowcoast.noaa.gov/newVersionInfo.htm. You can see the new version at http://nowcoast.noaa.gov. Sincerely - John, Jason, Sree, and Micah, nowCOAST development team, NOAA/NOS/Coast Survey Development Lab


  • WHEN THUNDER ROARS, GO INDOORS!   Summer is the peak season for one of the nation's deadliest weather phenomena- lightning. But don't be fooled, lightning strikes year-round. The goal of this Website is to safeguard U.S. residents from lightning. Check out this NWS lightning safety week subpage at: http://www.lightningsafety.noaa.gov:80/.


  • EASTERN U.S. WEATHER CONFERENCE    The annual Eastern U.S. Weather Conference for 2009, will be held at the Sheraton, Providence Airport. You do not have to be a member of EasternUSwx.com to attend. The conference is open to all who have a passion for weather and want to learn more about the subject. In addition to the main day of the conference, highlights this year include: three workshops on Friday, July 17, and a Friday night get together/reception where you will have a chance to meet folks who share similar enthusiasm for a variety of weather-related topics. For more details, visit the organization's website at http://conference.easternuswx.com:80/index.html.


  • DROUGHT MONITOR    http://www.drought.unl.edu/dm/monitor.html    More information on drought can be found at NOAA's Drought Information Center http://www.drought.noaa.gov/
  • REMINDER All National Weather Service station data listed herein is preliminary and may be subject to change.  The data has not been certified and cannot be used in legal actions.  Only reports certified by the National Climatic Data Center in Asheville, NC can be used for these purposes.

  • ACON VA/NC/SC Member Station Extremes - MAY 2009
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    90°
    Newport News, Norfolk (NOR),
    Portsmouth, Washington (VA)
    31°
    New Market
    70.8°
    Norfolk (FHC)
    61.8°
    Woodstock
    10.26"
    Dulles
    2.98"
    Wallops Island
    North Carolina
    92°
    Fayetteville
    35°
    Asheville
    71.9°
    Fayetteville
    63.9°
    Asheville
    9.18"
    Asheville
    3.57"
    Fayetteville
    South Carolina
    93
    Columbia
    45°
    Greenville-Spartanburg
    73.3°
    Charleston
    69.7°
    Greenville-Spartanburg
    7.94"
    Orangeburg
    4.16"
    North Myrtle Beach


    ( For an explanation of column headers in the following tables,
    please note the column denotations table below. )


    TEMPERATURE / WINDS/ ELEMENTS

    VIRGINIA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
    
         STN  A      B    C     C1     D    E  F    G    H  I  J K K1  L  M      N   N1   N2   O P Q R R1 R2   S   CWA
         ------------------------------------------------------------------------------------------------------------
         BCB 71.7  52.1  61.9   +3.0  80   22  33   19   0  0  0 0 82% 28 320  10   4.4       8 0 0 0  5     2400 AKQ
         BRI 72.6  53.9  63.3   +1.27 84 22,23 40   13   0  0  0 0 65%                         0 0 0 0  0     0510/1600 LWX
         CEN 72.4  54.7  63.3   +1.3  86   23  38   19   0  0  0 0 70% 30 270   9   1.6  320 7 0 0 0  3     2400 LWX
         CHT 73.8  55.0  64.4   +1.4  86.1 23  39.3 19   0  0  0 0 79% 28 220  14   0.86 180 8 0 0 0  3     2400 LWX
         CHO 73.3  52.5  62.9         85    9  33   19   0  0  0 0 71% 37 090  29   3.8       1 0 0 0  5     2400 LWX
         DAN 78.4  56.7  67.5   +1.4  88    9  38   19   0  0  0 0 73% 33 230   9   4.7       9 0 0 0  5     2400 RNK
         DCA 73.8  57.2  65.5   -0.1  86    9  45   19   0  0  0 0 70% 39 230   9   8.0      10 0 0 0  0     2400 LWX
         IAD 74.8  55.2  65.0   +2.7  86  9,23 38   19   0  0  0 0 70% 38 180  14   6.6       9 0 0 0  3     2400 LWX
         FCH 72.5  57.9  65.2         86    9  47   17   0  0  0 0                             6 0 0 0  8     2400 LWX
         FRV 73.0  53.1  63.5         87   24  37   19   0  0  0 0                             7 0 0 0  0     2400 LWX
         GAV 77.9  58.06 67.98        88    9  41   19   0  0  0 0 73% 32 240  14             8 0 0 0  0     2400 AKQ
         HAM                                                                                                  2400 AKQ
         HDV 74.2  54.8  64.5   +0.6  86   23  38   19   0  0  0 0 74%                         9 0 0 0  0     2400 LWX
         LDY 75.2  57.3  65.8   -0.2  87    9  40   19   1  0  0 0 65%                         5 0 0 0  2     2400 AKQ
         LYH 75.0  54.5  64.8   +1.4  83  9,31 37   19   0  0  0 0 73% 26 220   1   4.7       8 0 0 0  4     2400 RNK
                                                                       26 180   8                                
         NEW 73.03 51.45 62.4   -0.12 84 22,23 31   19   0  0  1 0 72% 30 270 14,15 17.82     0        3     1700 LWX
         NPN 79.6  59.4  68.4   +2.4  90.7  9  41.7 20   1  0  0 0     47 300   9   3.1  090 9 0 0 0  0     2400 AKQ
         NOR 79.1  60.0  69.6   +1.9  90    9  44   20   1  0  0 0                             3 1 0 0  0     2400 AKQ
         ORF 77.4  60.5  68.9   +2.6  89    9  48   12   0  0  0 0 75% 48 210   4   9.2       8 0 0 0  0     2400 AKQ
         FHC 79.2  62.4  70.8   +4.5  89.9  9  47.6 20   1  0  0 0 79% 42 230   4   3.3  202                2400 AKQ
         POR 79.9  60.5  70.2   +2.8  90   29  46   20   1  0  0 0 82% 30 025  18   4.2  130 5 2 0 0  0     2400 AKQ
         CTR 77.5  52.2  66.2   +1.2  87.0  9  36.3 20   0  0  0 0 79% 16 240   1   0.2  170 3 0 0 0  0     2400 AKQ
                                                                       16 090  26                     
         MEC 78.88 57.8  68.92        88    9  39 19,20  0  0  0 0                             7 0 0 0  0     1700 AKQ
         RIC 78.4  57.9  68.1   +2.7  89    9  41   19   0  0  0 0 71% 63 260   9   7.0       7 0 0 0  1     2400 AKQ
         ROA 74.9  55.8  65.4   +1.3  84    9  37   19   0  0  0 0 70% 37 290   7   5.7       7 0 0 0  1     2400 AKQ
         WAL 72.7  56.6  64.6   +2.3  87    9  39   20   0  0  0 0     37 280   4   8.6       2 0 0 0  5     2400 AKQ
         WOO 69.6  54.0  61.8   -0.3  82 23,24 42   19   0  0  0 0                             3 0 0 0  9     2400 LWX
         WSH 74.5  53.3  63.9   +0.63 90   23  38   19   1  0  0 0 76% 16 160  10   0.9  360 4 0 0 0  0     2400 LWX
    
    NORTH CAROLINA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
        
         STN  A      B    C     C1    D    E  F      G  H  I  J K K1  L  M     N    N1   N2  O P Q R R1 R2  S    CWA
         -----------------------------------------------------------------------------------------------------------
         AVL 73.2  54.5  63.9  +1.9  82    31 35    19  0  0  0 0 76% 36 300  9    4.7      8 0 0 0  5     2400 GSP
         MRH 75.8  64.5  70.2        80 30,31 50    18  0  0  0 0     41 320  7   10.5      5 0 0 0  0     2400 MHX
         CLT 78.6  68.5  69.1  +0.1  88    31 40    19  0  0  0 0 72% 35 240  5    7.9      7 1 0 0  4     2400 GSP
         ECG 79.3  62.1  70.7  +2.8  89  9,29 46    12  0  0  0 0 70% 47 190  4    9.7      9 0 0 0  3     2400 AKQ
         FAY 82.3  61.5  71.9        92    31 47    20  3  0  0 0 69% 37 240 29    8.0     11 0 0 0  4     2400 RAH
         GSO 77.6  59.0  68.3  +2.5  87     9 42    19  0  0  0 0 69% 45 260  9    7.6      7 0 0 0  2     2400 RAH
         HSE 75.0  64.3  69.6  +2.0  82    26 50    18  0  0  0 0 78% 52 210  5   10.2      0 0 0 0  2     2400 MHX
         HKY 76.3  57.8  67.1  +0.8  86    31 39    19  0  0  0 0     52 270  9    4.0      7 0 0 0  7     2400 GSP
         LBT 81.6  61.9  71.7  +3.3  90    31 47    12  1  0  0 0 74% 40 280 11    6.5     11 0 0 0  1     2400 ILM
         EWN 79.5  60.9  70.2  +0.5  89  9,31 49 12,18  0  0  0 0 78% 35 200  4    7.4      8 0 0 0  0     2400 MHX
         RDU 81.6  61.0  71.3  +4.3  90     9 44    20  1  0  0 0 68% 44 270  9    7.3      7 0 0 0  2     2400 RAH
         RAL 79.6  58.3  69.0  +2.0  88     9 39    20  0  0  0 0     45       9             6 0 0 0  0     2400 RAH
         ROX 78.5  57.9  68.5  +1.1  88     9 36    19  0  0  0 0 74% 31 180  9        180 6 0 0 0  3     2400 RAH
         ILM 80.4  63.1  71.7  +1.5  89  9.31 48    12  0  0  0 0 66% 41 300 29    8.8      6 0 0 0  1     2400 ILM
    SOUTH CAROLINA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  A      B    C     C1    D    E  F      G  H  I  J K K1  L  M     N   N1   N2   O P Q R R1 R2  S    CWA
         -----------------------------------------------------------------------------------------------------------
         AND 78.8  60.8  69.8  +1.0  90    30 46    19  1  0  0 0     55 310 28   6.5       9 0 0 0  3     2400 GSP
         CAE 82.0  63.4  72.7  +1.1  93    31 50    13  2  0  0 0 68% 31 030 19   6.7       6 0 0 0  1     2400 CAE
         CRE 78.3  64.7  71.5  +1.5  85    31 50    12  0  0  0 0 79% 38 010 17   9.8       2 0 0 0  0     2400 ILM
         CHS 82.5  64.2  73.3  +1.2  92     9 51 18,19  5  0  0 0     37 080 20   9.5       8 0 0 0  1     2400 CHS
         FLO 81.1  61.8  71.5  +0.5  91    31 48    19  2  0  0 0 74% 48 220  4   7.5       8 0 0 0  4     2400 ILM
         GSP 79.0  60.4  69.7  +2.5  91    31 45    19  1  0  0 0 69% 39 280 28   6.8       8 0 0 0  5     2400 GSP
         OGB 82.0  62.9  72.5        92    31 50 18,19  2  0  0 0     43 290  4   6.1      12 0 0 0  1     2400 CAE
    NEARBY STATIONS
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  A      B    C     C1    D     E  F     G  H  I  J K K1  L  M     N   N1   N2   O P Q R R1 R2  S    CWA
         ---------------------------------------------------------------------------------------------------------
         TRI 75.6  53.9  64.8  +1.7  84  22,26 36   19  0  0  0 0     33 290  1   3.8         9 0 0  0  7  2400 MRX
         DAV              55     0    80    22 31   19  0  0  2 0                                           0700 PBZ

    (Please note the column denotations table below.)
    PRECIPITATION / BAROMETRIC PRESSURE

    VIRGINIA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  T      T1     U  U1   V    V1   W X   Y      Z  1   2 3    4    5     6   6A   7    7A    8    S
         -------------------------------------------------------------------------------------------------------
         BCB  9.54  +5.15 1.26 26 1.26    26 18 1 22.66  0.0  0   0 0  0.0 19.1                             2400
         BRI  6.89  +2.81 1.41 25 1.63   2-3 15 2 14.40  0.0  0   0 0  0.0  9.5  30.40  29 29.80  29        0510/1600
         CEN 10.48  +6.00 2.39 26 2.39    26 19 1 20.03  0.0  0   0 0  0.0  8.7  30.50  18 29.64   9 30.07  2400
         CHT 10.15  +5.93 3.62 26 3.67 25-26 20 2 20.21  0.0  0   0 0  0.0  7.1  30.496 19 29.617  9 30.04  2400
         CHO  6.97      1.19 6,25 1.69 25-26 17 3 14.37                                    29.62   9        2400
         DAN  6.56  -2.60 1.78  4 2.26   4-5 16 2 17.36  0.0  0   0 0  0.0  4.5  30.48  19 29.73  29        2400
         DCA  8.05  +4.23 1.65 26 1.67 25-26 16 2 17.27  0.0  0   0 0  0.0  7.5            29.62   9        2400
         IAD 10.26  +6.04 3.59 26 3.65 25-26 18 2 19.55  0.0  0   0 0  0.0  6.6            29.62   9        2400
         FCH  8.56        1.50 6, 1.75   5-6 15 3 18.44  0.0  0   0 0  0.0  9.5                             2400
                               26
         FRV  5.52        0.91  4            17 0 11.46  0.0  0   0 0  0.0  6.1  30.49  19 29.65   9        2400
         GAV  4.64        1.03  6 1.16   4-5 15 1 14.59  0.0  0   0 0  0.0 11.6  30.46  19 29.67  9, 30.04  2400
                                                                                                  29
         HAM                                                                                                2400
         HDV  9.78  +4.80 4.07 26            19 1 19.87  0.0  0   0 0  0.0  8.5  30.46  19 29.57   9        2400
         LDY  3.79  -0.19 0.72  3 1.27   2-3 15 0 10.78  0.0  0   0 0  0.3 10.4  30.50  19 29.65   9 30.05  2400
         LYH  7.04  +2.93 2.21 14 2.48 14-15 19 2 17.51  0.0  0   0 0  0.0 11.2  30.48  19 29.70  29        2400
         NEW  6.68  +4    1.50 17                 16.16  0.0  0   0 0  0.0  9.8  30.72  19 30.00  26        1700
         NPN  6.07  +2.04 1.95 17 1.98 17-18 15 1 18.37  0.0  0   0 0  0.0  2.0  30.46  19 29.65  29        2400
         NOR  5.47  +1.49 1.77  6            16 2 17.34  0.0  0   0 0  0.0  0.5                             2400
         ORF  4.77  +1.03 1.21 17 1.21    17 14 1 15.41  0.0  0   0 0  0.0  0.5  30.45  19 29.65  29        2400
         FHC  4.89  +1.15 1.28 17 1.28    17 16 1 14.63  0.0  0   0 0  0.0  0.5  30.426 19 29.641 29 30.031 2400
         POR  5.65  +1.54 1.52  6 1.61   5-6 16 1 16.65  0.0  0   0 0  0.0  0.7  30.43  19 29.65  29 30.035 2400
         CTR  4.56  +0.71 1.04  5 1.55   4-5 16 0 15.66  0.0  0   0 0  0.0  8.5  30.45  29 29.66  29 30.026 0400
         MEC  3.70        0.78  7 1.42   6-7 13 0 12.87  0.0  0   0 0  0.0 10.6  30.21  19 29.47  29 29.79  0700
         RIC  3.71  -0.25 1.09  4 1.18   4-5 15 1 11.27  0.0      0 0  0.0  6.6  30.44  29 29.26   3        2400
         ROA  6.87  +2.63 1.35  6 1.36   6-7 18 1 17.48  0.0  0   0 0  0.0  4.0  30.48  19 29.73  29        2400
         WAL  2.98  -0.22 0.79 29 0.83 28-29 13 0  8.23  0.0  0   0 0  0.0  8.6  30.46  20 29.64   9        2400
         WOO  6.60  +2.45         1.21 25-26 18 1 15.12  0.0  0   0 0  0.0  9.6  30.62  19 29.99  29        0800
         WSH  6.65  +2.75 1.31 24 1.31    24 18 2 17.33  0.0  0   0 0  0.0 10.2  30.53  19 29.74   9        2400
    NORTH CAROLINA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  T      T1     U  U1   V    V1   W X   Y      Z    1 2 3   4    5     6    6A   7    7A    8     S
         -------------------------------------------------------------------------------------------------------
         AVL  9.18  +4.76 2.93 14 3.30 14-15 20 1 21.06   0.0   0 0 0  0.0  4.7            29.72  29         2400
         MRH  5.02        1.08 17 1.52 15-16 14 1 14.35   0.0   0 0 0  0.0    T  30.38  20 29.73  29         2400
         CLT  7.28  +3.62 2.40  5 2.41   5-6 16 3 19.71   0.0   0 0 0  0.0  4.0            29.72  29         2400
         ECG  3.76  -0.67 0.82  7 0.96   7-8 11 0 12.65   0.0     0 0  0.0  0.8  30.48  19 29.67  29         2400
         FAY  3.57        0.86  5 1.22   4-5 17 0 12.69                                    29.71  29         2400
         GSO  3.59  -0.36 1.75  5 1.77   5-6 16 1 15.36   0.0   0 0 0  0.0  6.9            29.71  29         2400
         HSE  4.68  +0.76 2.08 15 2.27 15-16 12 1 16.60   0.0   0 0 0  0.0  2.3  30.37  13 29.71  30         2400
         HKY  5.49  +1.03 1.33 16 1.58 16-17 18 1 18.83   0.0   0 0 0  0.0   T             29.72  29         2400
         LBT  5.35  +1.38 1.05  7 1.05     7 13 1 10.96                          30.35  20 29.68  29         2400
         EWN  8.33  +4.14 2.63  5 2.81   4-5 16 2 18.03   0.0   0 0 0  0.0  1.5  30.38  20 29.73  29         2400
         RDU  4.13  +0.34 0.98  5 1.27   4-5 14 0 16.83   0.0   0 0 0  0.0  6.7            29.71  29         1900
         RAL  4.56  +0.77         1.48   4-5 15 1 17.88   0.0   0 0 0  0.0 10.1  30.40  20 29.71  29         2400
         ROX  5.23  +1.42 1.26 29 1.26    29 15 3 19.21   0.0   0 0 0  0.0  8.3  30.45  19 29.73  29  30.06  2200
         ILM  6.52  +2.12 2.26 17 2.56 17-18 18 2 14.72   0.0   0 0 0  0.0  1.0  30.32  20 29.74  29         2400
    SOUTH CAROLINA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  T      T1     U  U1   V    V1   W X   Y     Z   1  2 3  4     5     6    6A   7    7A    8     S
         ------------------------------------------------------------------------------------------------------- 
         AND  6.13  +2.23 2.13 28  2.23 28-29 18 1 23.47  0.0  0 0 0   0.0    T  30.37  19 29.74  28         2400
         CAE  5.45  +2.28 1.39 27  1.39    27 15 2 16.19  0.0  0 0 0   0.0    T  30.33  19 29.72  29         2400
         CRE  4.16  +1.17 0.98 5,  1.23 17-18 13 0 11.98                         30.30  20 29.75  29         2400
                               17
         CHS  6.45  +2.78 1.76 14  1.83 14-15 13 2 17.15  0.0  0 0 0   0.0    T  30.25  20 29.75  29         2400
         FLO  6.21  +2.90 1.20 17  1.34 17-18 17 1 13.19                         30.33  20 29.69  29         2400
         GSP  4.32  -0.27 0.85  6  0.94   6-7 19 0 22.41  0.0  0 0 0   0.0  4.4            29.72  29         2400
         OGB  7.94        2.02 17  2.31   4-5 18 3 19.37                         30.29  20 29.74  29         2400
    NEARBY STATIONS
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  T      T1     U  U1   V      V1  W X   Y      Z  1  2  3   4     5     6   6A   7    7A 8      S
         -------------------------------------------------------------------------------------------------------
         TRI  4.58  +0.26 0.75 4, 0.93   4-5 19 0 16.15  0.0   0  0  0   0.0   8.3 30.42 19 29.71  28        2400
                                7
         DAV  7.10  +1.3  1.17  4            20 2 30.90  0.0   0  0  0   0.0 189.0                           0700    

    Virginia:

    Arlington - From NWS WBC come these notes: " TEMPERATURES THIS MAY 2009 AVERAGED NEAR NORMAL. WASHINGTON DID NOT REACH 90F DURING THE ENTIRE MONTH. MAY 2009 WAS THE SIXTH WETTEST MAY ON RECORD DATING BACK TO 1871. THIS IS THE SECOND CONSECUTIVE MAY THAT HAD MUCH ABOVE NORMAL RAINFALL. LAST MAY...2008...RECORDED 10.66 INCHES OF RAIN...WHICH IS THE THIRD WETTEST MAY ON RECORD. MEASURABLE PRECIPITATION WAS MEASURED ON 16 DAYS IN MAY ...THE MOST IN ANY MONTH SINCE MAY 2004. ALSO MAY 2009 HAD EIGHT DAYS WHERE AT LEAST 0.50 INCHES OF RAIN WAS OBSERVED...THE MOST NUMBER OF HALF INCH DAYS IN ANY MONTH SINCE AUGUST 1955. FOR THE YEAR...TOTAL RAINFALL OVER THE FIRST THREE MONTHS OF 2009 WAS ONLY 5.00 INCHES...WHICH RANKED FOURTH DRIEST ON RECORD FOR THAT PERIOD. THE NEXT TWO MONTHS...APRIL-MAY 2009...HAD A COMBINED TWO-MONTH PRECIPITATION TOTAL OF 12.27 INCHES...MAKING IT THE FIFTH WETTEST APR-MAY PERIOD...THE WETTEST APR-MAY PERIOD BEING 1889... WHICH RECORDED 19.82 INCHES. AT THE END OF MAY...TOTAL PRECIPITATION FOR 2009 WAS NEARLY ONE AND ONE QUARTER INCH ABOVE NORMAL. RAINFALL OF 1.65 INCHES ON THE 26TH BROKE THE DAILY RECORD AT DCA OF 1.49 INCHES SET IN 2003. " [ + + ] 

    Bridgewater - " The precipitation for the year is now slightly above normal. We went from dry at the first of the month to wet at the end of the month. Our gardens are soaked. This is the wettest May since 1988, and the second wettest in my 44 years of record keeping on precipitation. " - [ + + ] - additional notes from Clayton

    Centreville - " The abundance of rain for May certainly left its effects felt in our record books. With 4.48" as a normal precipitation amount for the month we managed to exceed that amount by 234% for a final accumulation of 10.48". Must have had the head dress on too tight for the neighborhood rain dance. Although slightly warmer than usual, it wasn't by much. The average high for May came in at 72.4; a little less than two degrees under the normal average high of 74.3. It's the low temperatures that skewed the daily average to 4.9 above the published 49.8 normal for the month though. This resulted in an overall monthly average 1.3 above the 62.0 normal. No records were set in the extremes department. Eighty-six degrees was our high temperature on May 23 while 38 was the lowest set four days earlier on the 19th. Precipitation played a similar appearance this year in May as it did in 2008. Back then, 10.55" fell saving us for the rest of the year from further negative annual accumulation totals. With a hefty 10.48" of rain in the ledger for May-2009 we can brag about exceeding our normal monthly rainfall of 4.48' by 6.00". For this May there has not been a single day rain event of a greater amount since 1989 when 2.90" was recorded. Our 2.39" on May 26th certainly gave that figure a run for the money though and accounted for 23% of our monthly accumulation. As it currently stands we are entering June with a 2.14" surplus. Summer's best from sunny Centreville. " - [ + + ] - notes from Paul

    Chantilly - Russ send these additional notes: "May was extremely wet. It's rain total of 10.15" was greater than the total precipitation of 2009's previous months. The average temperature was 1.4 above normal and precipitation was an incredible 5.93" above normal. May tied for the wettest May on record, with 20 days seeing more than a trace of rainfall. Record high minimum temperatures occurred on the 15th (64.3) and 16th (65.2). Record precipitation fell on the 26th (3.62"). It was the 2nd highest precipitation total ever recorded for any day in May. Thunderstorms rumbled through on the 6th, 7th, 14th, 16th, 26th, 28th, 29th and 30th. Dense fog was observed on the 6th, 12th and 14th. *Please note, anemometer is currently partially obstructed from the Southeast " - [ + + ]

    Dulles - from NWS Sterling (KLWX) come these notes: " TEMPERATURES THIS MAY 2009 WERE ABOVE NORMAL...BUT DULLES DID NOT REACH 90F DURING THE ENTIRE MONTH. NEW RECORD HIGH-MIN TEMPERATURES WERE RECORDED ON THE 15TH...65F...AND THE 16TH...66F MAY 2009 TIED FOR THE WETTEST MAY ON RECORD. IT WAS THE WETTEST MONTH OF ANY CALENDAR MONTH SINCE JUNE 2006. MEASURABLE PRECIPITATION OF 0.01 INCHES OR MORE WAS RECORDED ON 18 DAYS...THE MOST SINCE AUGUST 2003. AT LEAST 0.50 INCHES OF RAIN WAS OBSERVED ON EIGHT DAYS THIS MONTH...WHICH WAS THE MOST DURING ANY MONTH AT DULLES DATING BACK TO 1962. FOR THE YEAR...TOTAL RAINFALL OVER THE FIRST THREE MONTHS OF 2009 WAS ONLY 5.40 INCHES...WHICH RANKED FOURTH DRIEST ON RECORD FOR THAT PERIOD. THE NEXT TWO MONTHS...APRIL-MAY 2009...HAD A COMBINED TWO MONTH PRECIPITATION TOTAL OF 14.38 INCHES...MAKING IT THE SECOND WETTEST APR-MAY PERIOD ONLY TO LAST YEARS 15.60 INCHES RECORDED DURING APR-MAY 2008. BY THE END OF THE MONTH...TOTAL PRECIPITATION FOR 2009 WAS NEARLY 3 INCHES ABOVE NORMAL. THE 3.59 INCHES OF RAIN MEASURED ON THE 26TH BROKE THE DAILY RAINFALL RECORD FOR THAT DATE AT DULLES...THE PREVIOUS RECORD WAS 1.59 INCHES SET IN 2002. THE 3.59 INCHES ON THE 26TH ALSO WAS THE SECOND HIGHEST PRECIPITATION TOTAL FOR ANY DAY IN THE MONTH OF MAY AT DULLES. " - [ + + ]

    Falls Church - Erica notes: " A very wet month. 20 days of the month had some measurable rain or sprinkles. " - [ M + ]

    Front Royal - Mike sends these notes: " The best way to put the start of May 2009's weather is wet. The first eight days saw measurable precipitation. None of the days exceeded 1.00" though. A pesky front stalled first to our north and then moved south and as areas of low pressure moved along the front light to occasionally heavy rain fell in the Shenandoah Valley. The only interesting thing which might be boring to some is that the 4th and 5th had the same high and low of 56 and 51. Precipitation for the first eight days of the month totaled 2.92". The front moved out as weak high pressure gave way to a southwesterly flow on the 9th and 10th. A weak cold front accompanied by a thunderstorm on the 11th gave us another .19" of rain on the 11th. A cold front approached from the northwest on the 14th with another round of showers and thunderstorms. This front also became stationary in the area. On the 16th and early on the 17th another approaching cold front gave another round of showers and storms. The front cleared the area early on the 17th. Clouds broke and a cooler then normal air mass moved in as the sun came out. I was just happy to see the sun. The lowest temperature of the month of 37 was reached on the morning of the 19th as good radiational cooling conditions were present. The driest and sunniest portion of the month occurred from the 18th to the 24th. High pressure moved overhead and as it moved east southwesterly winds provided for moderating temperatures and an accelerated grass growth rate. The highest temperature of 87 on the 24th would be nothing but reminder that we are in the warmer months. Yet another front was to bring more showers and storms the next few days and you guessed it, stall to the south. The 25th through the 28th were mostly cloudy and the high temps of 66 and 68 with associated clouds on the 26th and 27th made for more dreary May days. Temps rebounded on the 28th in advance of another front and its showers and storms. Precip total from the 25th to the 28th was 1.27". A MCS coming out of Ohio and West Virginia gave us a round of early morning showers and storms on the 31st, followed by a weak and dry cold frontal passage. Measurable precipitation fell on 17 of the 31 days and thunderstorms breezed by 7 times. The rainfall deficit has pretty much gone to the wayside as the yearly rainfall total is 11.46". If you would have told me that we would not have hit 90 during the month say in April when we had three 90 days I would have thought you were, well, no so smart. The notes in my observer book summarize May as "active, but boring due to lack of extremes." The way June 2009 is shaping up that might be written again. Only time will tell. " - [ - + ]

    Glen Allen - Lowell Koontz reports the following: " May was warmer than average as the monthly mean temperature was 68.0F, a +3.4F departure, and was above average in precipitation (when compared to Ashland, Virginia records). The 4.64 inches of precipitation for May was a + 0.79 inch departure when compared to the Ashland, VA average. The maximum precipitation recorded in a day was 1.03 inches on the 5th and thunder was heard on eight days during May. Measurable precipitation occurred on fifteen days which was near average as the 112 year average for Richmond is 14.2 days and May has the highest frequency of precipitation of all the months of the year. The maximum temperature for May was 88F on the 9th and the lowest minimum was 41F recorded on the 19th which was near record cold for the later part of May. Charlottesville reported 34F and some western locations reported frost. KRIC had 41F the lowest for the date since 1935. KRIC also had a 42F minimum on the 20th which was only 1F above the record for the date of 42F set in 2002. The lowest dew point temperature for May was 24F on the 18th at 1221 and the highest dew point was 74.7F on the 28th at 1514. The lowest relative humidity for the month was 23% on the 18th and 20th giving very large daily temperature ranges of 35F on the 20th and 36F on the 21st. The maximum wind gust was 32 mph from the west-southwest that occurred on the 14th at 1635. The highest barometer recorded for the month was 30.46 inches on the 19th and the lowest reading for May was 29.67 inches on the 9th and 29th. " - [ + + ] 

    Herndon - Randy reports: " May's about normal for temperature but, was VERY WET. The temperatures ranged between a high of 86 and a low o f 38. The average high was about normal and the average low slightly above normal yielding the average temperature for the month only 0.6 degrees above normal. But the rainfall was anything but normal. It rained on 10 of the first 11 days and 7 of the last 8 days and on 21 days all together. The only "Dry Spell" occurred between the 18th and 23rd. The heaviest rain fell in thunderstorms on the 26th with 4.07 inches falling. We ended up with 9.78" for the month which was 4.80" above normal; the second above normal month in a row. The rainfall this month has now erased our deficit for the year and we are now 1.63" above normal. " - [ + + ]

    Ladysmith - Danny adds these notes: " May finished with slightly below normal temperatures. Precipitation was below normal yet again, but only by 0.19". Perhaps the most interesting statistic was that 15 of the 31 days this month featured measurable rainfall, including 9 of the first 11 days. However, no single day featured more than 0.72" of precipitation. " - [ - - ]

    Portsmouth - " May was a warm and wet month relative to normal for May months from 1977 to 2008. The 5.65" of rain produced a May that was 1.54" ABOVE normal rainfall (138% of normal). The month's average temp was 2.8 ABOVE normal Cold frontal passages occurred on the 4th, 11th, 17th, 31st. Station Records: 3rd - TEMPERATURE TIED - Maximum Minimum 66 [previous 1983]; 9th - TEMPERATURE - Maximum Minimum 68 [previous 66 in 2000]; 9th - TEMPERATURE - Maximum 89 [previous 88 in 2000]; 17th - RAINFALL - 0.91" [previous 0.90" in 1988]; 20th - TEMPERATURE - TIED - Minimum 46 [previous 2002]; 20th - TEMPERATURE - TIED Minimum 46 [previously 2002]. Through the 31st, rainfall for the year totalled 16.65" which is 98% of normal through the end of May, or 1.68" BELOW normal. " - [ + + ] 

    North Carolina:

    Greensboro - NWS Raleigh (RAH) reports: - " A RECORD RAINFALL OF 1.75 INCHES WAS SET AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT ON MAY 5TH. THIS BREAKS THE OLD RECORD OF 1.69 SET IN 1989. The May 2009 North Carolina Weather Review is located here: http://www.erh.noaa.gov/rah/ncsummaries/MonthlySummary.May.2009.doc [when available]. " - [ + - ]

    Raleigh - Bob reports: " The average daily temperature during May was 2.0 degrees above normal. Also rainfall was 0.77" above normal. May was a fairly active month regarding severe weather. From May 4th thru May 9th, there were either tornado or severe thunderstorm watches each day . Fortunately, there were no actual major severe weather events. Thunderstorms were observed at this station on at least six (6) days during May. " - [ + + ]

    Raleigh - NWS Raleigh (RAH) reports: " A RECORD RAINFALL OF 0.98 INCHES WAS SET AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON MAY 5TH. THIS BREAKS THE OLD RECORD OF 0.91 SET IN 1989. The May 2009 North Carolina Weather Review is located here: http://www.erh.noaa.gov/rah/ncsummaries/MonthlySummary.May2009.doc [when available]. " - [ + + ]

    Nearby Cities:

    Tri-Cities, TN - from NWS Morristown: " The monthly-averaged temperature at Tri-Cities was 64.8 degrees, which was 1.8 degrees above normal. It ranked in the middle one-third of observations taken in May at Tri-Cities. No daily temperature records were broken. The warmest May at Tri-Cities was back in 1962, when the monthly-averaged temperature was 71.2 degrees. Tri-Cities received 4.58 inches of rain in May, which was 0.26 inches above normal. It ranked as the 20th wettest May on record at Tri-Cities. Measurable rain occurred on nineteen days, and four of those days had more than one-half of an inch. The heaviest rain fell on the 4th and 7th, when 0.75 inch was reported. The wettest May of the 72 years of observations taken at Tri-Cities was back in 1950, when 9.71 inches of rain was recorded. The seasonally-averaged temperature at Tri-Cities this spring was 56.1 degrees, which was 1.4 degrees above normal. It tied with 1986, 1976, and 1962 as the 28th warmest spring on record at Tri-Cities. The warmest spring at Tri-Cities was back in 1991, when the seasonally-averaged temperature was 59.5 degrees. Tri-Cities received a seasonal rainfall total of 9.51 inches of rain this spring, which was 1.95 inches below normal. It ranked as the 25th driest spring on record at Tri-Cities. The wettest spring at Tri-Cities was back in 1973, when 17.22 inches of rain was recorded. " - [ + + ]

    Davis, WV - from Dave Lesher's website: " May finished with an average temperature that was NORMAL but greater than normal rainfall. No snow for the month was NORMAL. Year-to-date rainfall of 30.9" was a whopping 7.1" ABOVE normal. The seasonal snowfall of 189" was 46" ABOVE normal. " - [ +/- + ]



    COLUMN DENOTATIONS:

    A  maximum mean temperature T total precipitation (inches)
    T1 departure from normal
    B  minimum mean temperature U maximum calendar day precipitation (inches)
    C  monthly mean temperature
    C1 departure from normal
    U1 date of maximum calendar day precipitation
    D  maximum temperature V date(s) of maximum daily precipitation
    E  date(s) of maximum temperature V1 maximum 24-hour precip. & date(s)
    F  minimum temperature W number of days with precip. >= .01"
    G  date(s) of minimum temperature  X number of days with precip. >= 1.0"
    H  days with maximum temperature >=90 Y year-to-date precipitation (inches)
    I  days with maximum temperature <=32 Z maximum calendar day snowfall (inches)
    J  days with minimum temperature <=32 VRB Variable
    K  days with minimum temperature <= 0 1 date of maximum calendar day snowfall (inches)
    K1 average relative humidity 2 number of days with snowfall
    L  peak wind gust (miles per hour)  3 number of days with snowfall >= 1.0"
    M  direction of peak wind gust 4  total snowfall for month (inches)
    N  date(s) of peak wind gust  5 total snowfall for 2007-2008 season (inches)
    N1   average wind speed (miles per hour) 6 maximum barometric pressure (inches)
    N2 dominant wind direction 6A date of maximum barometric pressure
    O  number of days with thunder  7 minimum barometric pressure (inches)
    P  number of days with hail 7A date of minimum barometric pressure
    Q  number of days with glaze 8   average sea-level pressure
    R  number of days with ice pellets STN  Station
    R2 sky cover percentage NR not recorded
    R1 number of days with dense fog [1/4 mile and less visibility] (i) incomplete data
    S  local observation time for temps/precipitation (M) missing, if listed in data table
     ~ "about" E estimated
     +  additional indeterminate number of days CWA - NWS Office County Warning Area


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    National Weather Service Web Sites & Current Email Addresses
    Within or Nearby the ACON VA/NC/SC Area Can Be Found At:

         NWS Washington/Baltimore, VA/MD
         NWS Wakefield, VA
         NWS Blacksburg, VA
         NWS Raleigh, NC
         NWS Newport/Morehead City, NC
         NWS Wilmington, NC
         NWS Greenville-Spartanburg, SC
         NWS Columbia, SC
         NWS Charleston, SC
         NWS Morristown, TN

         National Weather Service Homepages

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    STATION / LOCATION (MILES & DIRECTION FROM MAIN POST OFFICE)/OBSERVER / YEAR RECORDS BEGAN / EMAIL ADDRESS:

      
       ROK   Roanoke, VA 6SW Wendell Prillaman  4/76 wlprillaman@cox.net
      AKQ    Wakefield, VA NWS Wakefield Municipal Airport 36-58-53N 077-00-04W 33M
    DCA    Arlington, VA Washington, DC, Reagan Washington National Airport 38-50-54N 077-02-03W 18M WSH   Washington, VA  David Yowell runamok@runamok.com
    BCB    Blacksburg, VA NWS Virginia Tech Airport 37-13N 080-25W   
    BRI     Bridgewater, VA Clayton Towers Ctowers@rica.net WOO  Woodstock, VA 5NW Lauck Walton - 12/1/85 jwalton@shentel.net
    CEN  Centreville, VA Paul Bassett 1985, 38 50.9788' N LAT. 77 25.6374' W LON. | Elevation 324' | m.psb@verizon.net LDY Ladysmith, VA Danny Jessee 2003 danny@dannyjessee.com
       WAL   Wallops Island, VA 37 56'26" N 75 27'47" W Wallops Flight Facility Airport
    CHO   Charlottesville, VA  Charlottesville-Albemarle Airport ASOS  (Rappahannock County) 38-08-18N 078-27-21W 192M AVL    Asheville, NC  Asheville Regional Airport 35-25-55N 082-32-15W 670M
      MRH    Beaufort, NC  Michael J. Field Airport 34-44-01N 076-39-38W 3M
    DAN  Danville, VA, Danville Regional Airport, 36-34-22N 079-20-10W 175M  CLT    Charlotte, NC NWS Charlotte/Douglas International Airpot 35-12-48N 080-56-55W 220M
    IAD   Dulles - Washington-Dulles International Airport  38-56-05N 077-26-51W 93M  SSB    Sunset Beach, NC   33.9 N 78.5 W  Tom Myers
    FCH    Falls Church, VA Erica Page - 3/7/94 Windie1970@aol.com HKY  Hickory, NC 
    HAM    Hampton, VA 5NE Dave Kessel 1989 david82@verizon.net ECG  Elizabeth City, NC,  Coast Guard Air Station 36-15-47N 076-10-58W 11M
    CTR  Winterpock in Chesterfield County, VA Albert Arnold 06/03 FAY  Fayetteville, NC Fayetteville Regional Airport, 34-59-22N 078-52-48W 55M
      GSO   Greensboro, NC NWS Piedmont Triad International Airport 36-05-51N 079-56-37W 275M
    CHT   Chantilly, VA Russ Topping -  12/2006  russ.topping@gmail.com - new location December 2006 HSE    Cape Hatteras, NC  Mitchell Field 35-13-56N 075-27-21W 3M
    HDV    Herndon, VA  Randoplh W. Ashby, 3.3 SM South, Lat: 38.922127, Lon: -77.38015, Elev: 390'. Randolph_Ashby@Raytheon.com LBT    Lumberton, NC  Lumberton Municipal Airport 34-36-26N 079-03-36W 37M
    GAV - Glen Allen, Henrico County, VA - Lowell Koontz  8/1/08  wwkoontz@verizon.net EWN    New Bern, NC  Craven County Regional Airport 36-04-03N 077-02-50W 3M
    FRV     Front Royal, VA  Michael Perritt -  04/08 snowyat9@yahoo.com RAL    Raleigh, NC 7NNW  Bob Woodson -  6/1/93 kf4mmm@qsl.net
    LKU     Louisa, VA 1N Joseph Bowers 1944 - NWS ID  44-5050-02jmbiii@earthlink.net RDU   Raleigh-Durham, NC Raleigh-Durham International Airport 35-52-14N 078-47-11W 130M
    LOU     Louisa, VA 6S John Bullock (about 1970) INACTIVE 1/1/02 - MEMBER DECEASED FALL 2004 ROX    Roxboro, NC 2SE Merriell A. Jay 1/93
    LYH     Lynchburg, VA NWS Lynchburg Regional Airport 37-19-15N 079-12-24W 295M ILM     Wilmington, NC NWS New Hanover International Airport 34-16-06N 077-54-22W 9M
    NEW    Newmarket, VA 2W Joyce Winfree joywood@shentel.net CHS   Charleston, SC NWS Charleston Air Force Base 32-53-56N 080-02-26W 13M
    NPN     Newport News, VA 7N Gary Leonard -  6/91 GaryMLeonard@aol.com CAE    Columbia, SC NWS Columbia Metropolitan Airport 33-56-31N 081-07-05W 73M 
    NOR     Norfolk, VA 3NE Jim Fentress 6/1/77 FLO    Florence, SC Florence Regional Airport 34-11-16N 079-43-51W 44M
    ORF     Norfolk, VA 5NE 36-54-13N 076-11-31W 14M  1871 GSP   Greenville-Spartanburg, SC NWS Greenville-Spartanburg Airport 34-53-02N 082-13-15W 286M 
    POR     Portsmouth, VA 36.81° North 76.33° West 3S Bill Trotter -  7/1/76 wxr@cox.net CRE    North Myrtle Beach, SC Grand Strand Airport 33-48-42N 078-43-26W 10M
    MEC     Mechanicsville, VA Glen Martin 11/19/91 OGB   Orangeburg, SC  Orangeburg Municipal Airport 33-27-50N 080-51-13W 59M
    FHC    Norfolk, VA  Fred Heutte Center 36° 54'N 76° 16'W 01/01/03 fhcgarden@cox.net AND   Anderson, SC 
    RIC     Richmond, VA Richmond International Airport 37-30-40N 077-19-24W 50M TRI     Tri-cities, TN  (Bristol / Johnson / Kingsport), Tri-City Regional Airport 36-28-47N 082-23-56W 474M 
    ROA    Roanoke, VA Roanoke Regional Airport 37-19-01N 079-58-27W 362M DAV  Davis, WV Dave Lesher canaanwx@canaantv.tv