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

SUMMARY OF CLIMATOLOGICAL DATA 


APRIL 2010

... WARM SPRINGTIME TEMPS CONTINUE WITH BELOW NORMAL RAINFALL...
 
  • HISTORICAL WINTER STORM GRAPHICS/EVENTS - from Wakefield, Virginia Website We found this subpage embedded deeply within the NWS AKQ website that is worth your time to explore. The compilation looks very complete and covers winter storms in AKQ's CWA. Click here: http://www.erh.noaa.gov/er/akq/wntr.php (Be sure to scroll all the way down the framed page.)


  • OUTSTANDING ACSL CLOUD FORMATIONS (AMONG OTHERS) LATE APRIL 2010 Check-out these spectacular cloud formations collected by citizens of the Palm Springs, California area in late April and posted at mydesert.com Link here while they're available: http://www.mydesert.com/apps/pbcs.dll/section?category=PluckPublicPhotoGallery&plckGalleryID=b38e092b-8d4a-40a9-9a47-65dccf6445c6&plckPhotoID=13af9ff5-0496-4316-8100-c9b3a67b52ab


  • HURRICANE PREPAREDNESS WEEK - May 23 - 29, 2010    History teaches that a lack of hurricane awareness and preparation are common threads among all major hurricane disasters. By knowing your vulnerability and what actions you should take, you can reduce the effects of a hurricane disaster. Hurricane Preparedness Week during 2010 is May 23rd through May 29th. The goal of this Hurricane Preparedness Web site is to inform the public about the hurricane hazards and provide knowledge which can be used to take ACTION. This information can be used to save lives at work, home, while on the road, or on the water. Join NOAA all week long as they examine the following topics: Hurricane History, Hurricane Hazards, The Forecast Process, What can you do to prepare, What actions you can take... (from Cocorahs.org)


  • EXTENSIVE LISTING OF WEATHER & CLIIMATE RESOURCES  Kevin Shaw of ACON MD/DE/DC sends this list of what appears to be quite an exhaustive listing of websites compiled by the NOAA Library staff on weather and climate. He's not quite sure to what extent it is up-to-date, but interesting and potentially a useful research tool nonetheles! http://www.lib.noaa.gov/researchtools/subjectguides/weathersites.html


  • THE EASTERN US WEATHER CONFERENCE The 6th annual Eastern US Weather conference is rapidly approaching! You don't have to be a member to attend the conference. BWI Airport Marriott is the location & June 11-12 are the dates. Check out the agenda, the conference speakers, online registration, hotel accomodations if you want to stay overnight, and much more at the conference website: http://conference.easternuswx.com/


  • 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 - APRIL 2010
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    95°
    Mechanicsville
    27°
    New Market
    63.3°
    Norfolk (FHC)
    55.5°
    Blacksburg
    2.86"
    Lunchburg
    0.78"
    Bridgewater
    North Carolina
    92°
    Moncure
    33°
    Moncure
    64.5°
    Fayetteville
    58.1°
    Asheville
    2.24"
    Asheville
    0.21"
    Lumberton
    South Carolina
    92
    Columbia
    39°
    Anderson
    Greenville-Spartanburg
    65.8°
    Columbia
    63.3°
    North Mrytle Beach
    2.03"
    Anderson
    0.70"
    Charleston


    ( 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 S   CWA
         ------------------------------------------------------------------------------------------------------
         BCB 70.3  40.7  55.5   +5.5  87    2  31 19,29  0  0  3 0   % 32 310   9   4.9       1 1 0 0  2 2400 AKQ
         BRI 71.6  43.6  57.6   +5    87  6,7  31 18,19  0  0  2 0 49%                                    0510/1600 LWX
         CEN 71.0  46.7  58.9   +6.2  92    6  33   18   2  0  0 0 58% 37 324  32   2.2  340 2 0 0 0  3 2400 LWX
         CHT 71.6  46.1  58.8   +5.0  91.9  6  33.7 27   0  0  5 0 65% 26 360  25   1.0  360 0 0 0 0  0 2400 LWX
         CHO 74.3  45.3  59.8         92    6  33 18,29  2  0  0 0     40 190  25   4.6       1 0 0 0  1 2400 LWX
         DAN 77.1  46.7  61.9   +4.6  92    6  35 18,29  3  0  0 0 59% 36 220   8   5.6       3 0 0 0  1 2400 RNK
         DCA 71.7  50.0  60.8   +4.7  90  6,7  41   18   2  0  0 0 55% 59 250   8   8.3       2 0 0 0  0 2400 LWX
         IAD 72.6  45.9  59.2   +6.1  93    6  32   18   2  0  1 0 58% 41 300   9   6.8       2 0 0 0  3 2400 LWX
                                                                       41 290  16
         FCH                                                                                              2400 LWX
         GAV 74.83 48.23 61.53        91    7  36 18,28, 2  0  0 0 60% 36 180   8             3 0 0 0  0 2400 AKQ
                                                    29
         HDV 71.5  45.4  58.5   +2.3  92    6  32   18   2  0  1 0 60%                         3 0 0 0  2 2400 LWX
         LDY 72.5  48.8  60.4   +2.9  89    7  38   29   0  0  0 0 47%                         0 0 0 0  0 2400 AKQ
         LYH 73.5  43.9  58.7   +3.4  91    6  32   19   1  0  1 0 59% 39 190   8   4.9       3 0 0 0  4 2400 RNK
         NEW 72.56 40.36 56.46  +2    89    6  27   18   0  0  8 0 52% 30 180   8 17.23  180 0 0 0 0  1 1700 LWX
         HAM 71    51    61           88  6,7  39   10                 41        6             3 0 0 0  2 2400 AKQ  
         NPN 75.1  49.1  61.9   +3.1  91.6  6  36.7 15   2  0  0 0     32 248   8   4.0  225 2 0 0 0  0 2400 AKQ
         NOR 73.3  50.2  61.8   +4.0  91    6  38   15   2  0  0 0                             1 1 0 0  0 2400 AKQ
         ORF 72.8  50.7  61.8   +4.4  90  6,7  38   15   2  0  0 0 59% 43 230   8   8.7       3 0 0 0  1 2400 AKQ
                                                                       43 330  20
         FHC 73.99 52.61 63.30  +5.9  90.7 6,7 43.6 15   2  0  0 0 65% 36 180   8   2.0  200 3 1 0 0  1 2400 AKQ
         POR 74.4  50.5  62.4   +3.1  90.6  6  38.3 15   2  0  0 0 72% 33 248  17   4.1  256 3 1 0 0  1 2400 AKQ
         CTR 76.7  45.8  60.8   +3.7  94.0  6  32.4 29   3  0  1 0 63% 24 225   8   0.5  183 1 0 0 0  0 2400 AKQ
         MEC 77.65 48.21 63.03        95  6,8  35   28   4  0  0 0                             2 0 0 0  0 1700 AKQ
         RIC 76.0  48.5  62.2   +5.1  93  6,7  36 10,29  2  0  0 0 56% 43 270  26   7.1       2 0 0 0  1 2400 AKQ
         ROA 74.2  47.5  60.9   +4.8  90    6  37 19,29  1  0  0 0 53% 48 320  17   6.5       3 0 0 0  0 2400 AKQ
         WAL 67.6  46.9  57.3   +4.1  89    7  36   18   0  0  0 0     43 160  25   8.3       1 0 0 0  5 2400 AKQ
         WOO 70.1  49.6  59.9   +4.6  90    7  38   18   1  0  0 0                             3 0 0 0  2 2400 LWX
         WSH 71.7  48.6  60.10  +4.78 92.1  7  37.3 18   2  0  0 0 56% 23 248   3   0.8  068 1 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 S    CWA
         -----------------------------------------------------------------------------------------------------------
         AVL 72.3  43.8  58.1  +4.0  87     6 34 19,29  0  0  0 0 60% 37 340  9    6.1      0 0 0 0  0 2400 GSP
         MRH 70.2  53.8  62.0        76    23 44 11,15  0  0  0 0     38 220 26    9.4      0 0 0 0  6 2400 MHX
                                                                      38 310 28       
         CLT 76.7  48.6  62.7  +1.8  90     6 35    10  0  0  0 0 59% 36 220  8    6.4      1 0 0 0  0 2400 GSP
         ECG 73.9  49.5  61.7  +1.6  87   6,7 34    15  0  0  0 0 56% 37 210 25    9.0      2 0 0 0  4 2400 AKQ
         FAY 78.7  50.3  64.5        91     6 39 19,29  1  0  0 0 58% 38 200 25    7.5      3 0 0 0  0 2400 RAH
         GSO 75.5  50.3  62.9  +5.3  89     6 39    11  0  0  0 0 53% 48 280  8    7.5      2 0 0 0  0 2400 RAH
         HSE 67.3  52.0  59.6  -0.2  73    23 40    29  0  0  0 0 76% 39 050 18    8.6      0 0 0 0  3 2400 MHX
         HKY 75.0  48.7  61.9  +3.6  90     6 37    19  1  0  0 0     37 230 25    4.9      2 0 0 0  0 2400 GSP
                                                                      37 280 28
         LBT 78.7  50.1  64.4  +3.9  90     6 39    10  1  0  0 0 62% 37 250 26    5.8      3 0 0 0  0 2400 ILM
                                                                      37 290 27 
         MON 78.2  46.8  62.4  +2.4  92.3   6 33.5  29  3  0  0 0 65% 25 270  8    1.3 023 1 0 0 0  1 2400 RAH
         EWN 76.8  49.7  63.2  +1.2  90     6 36    15  1  0  0 0 65% 36 200  8    6.4      0 0 0 0  8 2400 MHX
                                                                      36 210 25 
         RDU 76.5  49.5  63.0  +3.9  90     6 38 15,29  1  0  0 0 58% 36 210  8    6.2      2 0 0 0  1 2400 RAH
         RAL 76.7  47.6  62.2  +3.1  91     6 36    15  1  0  0 0     26       8             1 0 0 0  0 0730 RAH
         ROX 75.6  48.6  62.4  +5.1  91     6 36    18  0  0  0 0 59% 39 180  8             1 1 0 0  0 2200 RAH
         ILM 76.6  51.8  64.2  +1.5  86    17 38    15  0  0  0 0 64% 44 220 25    7.5      1 0 0 0  3 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 S    CWA
         -------------------------------------------------------------------------------------------------------
         AND 77.7  49.1  63.4  +2.8  89     5 39    10  0  0  0 0     44 270 27   5.5       2 0 0 0  1 2400 GSP
         CAE 80.3  51.3  65.8  +2.6  92     6 40    10  3  0  0 0 58% 45 260 27   5.8       1 0 0 0  0 2400 CAE
         CRE 73.7  53.0  63.3  +1.3  83 23,26 43    11  0  0  0 0 70% 49 220  9   7.3       3 0 0 0  8 2400 ILM
         CHS 79.0  54.8  66.9  +2.7  87  5,23 46    10  0  0  0 0     41 220 25   8.0       3 0 0 0  1 2400 CHS
         FLO 79.1  50.3  64.7  +1.6  90     6 40 11,29  1  0  0 0 61% 38 250 26   6.6       2 0 0 0  1 2400 ILM
         GSP 76.7  51.0  63.9  +4.9  88   5,6 39    11  0  0  0 0 55% 39 210  8   6.4       3 0 0 0  1 2400 GSP
         OGB 80.4  50.7  65.5        91   5,6 41    11  2  0  0 0     37 290 26   5.1       2 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   S    CWA
         ---------------------------------------------------------------------------------------------------------
         TRI 73.7  43.30 58.5  +3.9   88     2 31   10  0  0  1 0     41 200 15   4.3       3 0 0 0  0   2400 MRX
         DAV              49   +3     81     3 25   29  0  0 12 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  2.42  -1.41 0.74  8 0.74     8  9 0 12.02    T  5   1 0    T 53.6                             2400
         BRI  0.78  -2    0.43  8             4 0 10.16                0.0 48.0  30.50  14 29.40  26        0510/1600
         CEN  1.54  -1.90 0.42  8 0.51   8-9  7 0 11.65                0.0 70.1  30.60  14 29.25  26 29.93  2400
         CHT  1.55  -1.67 0.60 26 0.68 25-26  7 0 10.20                0.0 61.7  30.624 14 29.202 26 29.959 2400
         CHO  1.33        0.52  8 0.52     8  5 0 12.80                          30.60  14 29.18  26        2400
         DAN  1.59  -2.24 1.19  8 1.22   8-9  6 1 14.03                0.0 15.6  30.59  14 29.27  26        2400
         DCA  1.50  -1.27 0.62  8 0.69   8-9  7 0  9.33                0.0 56.1            29.22  26        2400
         IAD  1.29  -1.93 0.51 26 0.52 25-26  6 0 11.32                0.0 77.0            29.22  26        2400
         FCH                                                               54.7
         GAV  1.94        0.55  8 0.65   8-9  8 0 15.74                0.0 42.0  30.57  14 29.18  26 29.96  2400
         HDV  1.44  -2.10 0.33 26             9 0 11.38                0.0 80.4  30.59  14 29.16  26        2400
         LDY  1.34  -1.52 0.46  8 0.75   8-9  6 0 11.55                0.0 44.3  30.62  14 29.17  26 29.97  2400
         LYH  2.86  -0.60 1.53  2 1.54   8-9  8 1 18.02                0.0 34.8  30.60  14 29.24  26        2400
         NEW  1.31  -1.50 0.79 26             5 0 12.70                0.0 51.5  30.82  14 29.64  27        1700
         HAM  0.87        0.38  9            13 0 12.00                0.0       30.58     29.19            2400
         NPN  1.08  -2.81 0.42  9 0.42     9  6 0 17.04                0.0 14.6  30.58  14 29.18  26        2400
         NOR  0.93  -2.99 0.25  9             6 0 15.61                0.0  9.2                             2400
         ORF  1.00  -2.38 0.39 26 0.39    26  7 0 15.03                0.0  9.3  30.56  14 29.18  26        2400
         FHC  0.96  -2.42 0.28  9 0.40 26-27  6 0 13.89                0.0  9.0  30.556 14 29.186 26 29.968 2400
         POR  1.51  -1.90 0.73 26 0.79 26-27  7 0 16.65                0.0  9.5  30.55  14 29.17  26 29.964 2400
         CTR  1.74  -2.22 0.60 21 0.60    21  7 0 13.74                0.0 29.2  30.57  14 29.19  26 29.949 2400
         MEC  1.18        0.25 25 0.35 25-26  9 0 15.02                0.0 35.2  30.33  14 29.03  26 29.74  2400
         RIC  1.59  -1.59 0.40 21 0.42   8-9  9 0 14.18                0.0 28.0  30.60  14 29.21  26        2400
         ROA  1.35  -2.26 0.67  8 0.67     8  4 0 11.99                0.0 43.1  30.59  14 29.27  26        2400
         WAL  0.89  -1.89 0.33  9 0.33     9  7 0 14.26                0.0 27.9  30.58  14 29.21  26        2400
         WOO  1.38  -1.75         0.39 26-27 10 0 11.36                0.0 58.6  30.75  14 29.60  26        0800
         WSH  1.03  -2.98 0.43 26 0.44 25-26  7 0 15.52                0.0 63.3  30.65  14 29.26  26        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  2.24  -1.26 0.84 24 1.55 24-25  5 0 16.77                 0.0 39.2  30.45  14 29.38  26         2400
         MRH  1.62        1.14  9 1.14     9  6 1 16.47                      0.0  30.49  14 29.28  26         2400
         CLT  1.44  -1.51 0.33  8 0.61 24-25  8 0 14.48                      5.9  30.53  14 29.35  26         2400
         ECG  1.24  -1.76 0.66  9 0.66     9  8 0 10.13                        T  30.60  14 29.21  26         2400
         FAY  0.81        0.39  9 0.39     9  5 0 11.86                                     29.29  26         2400
         GSO  1.71  -1.72 1.13  8 1.13     8  5 1 14.14                 0.0 16.6            29.85  30         2400
         HSE  2.02  -1.27 1.54  9 1.54   8-9  6 1 20.90                      0.7  30.48  14 29.25  26         2400
         HKY  2.07  -1.63 1.12  8 1.12     8  6 1 16.88                      0.0  30.50  14 29.31  26         2400
         LBT  0.21  -2.62 0.12 27 0.12    27  4 0  7.43                           30.51  14 29.30  26         2400
         MON  1.20  -1.65 0.48  9 0.51 24-25  5 0 12.45                 0.0 10.5  30.544 14 29.278 26  29.994 2400
         EWN  0.53  -2.87 0.23 21 0.23    21  5 0 11.82                      6.4  30.52  14 29.24  26         2400
         RDU  1.47  -1.33 0.61  9 0.74   8-9  5 0 11.09                      8.7            29.29  26         1900
         RAL  1.61  -1.27         0.89   8-9  5 0 13.05     T 2,3 2  0    T  7.9  30.29  27 29.35  13         0730
         ROX  1.27  -1.66 0.70 21 0.70    21  6 0 13.17                     16.2  30.45  13 29.28  26  30.02  2200
         ILM  0.77  -2.17 0.35 21 0.35    21  6 0 12.13                      3.8  30.49  14 29.30  26         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  2.03  -1.32 1.20 24  1.21 24-25  5 1 13.46               0.0    T  30.47  14 29.41  26         2400
         CAE  0.91  -2.07 0.43  8  0.43     8  6 0  9.31               0.0  8.9            29.39  26         2400
         CRE  0.96  -1.16 0.41 25  0.41 24-25  5 0 10.45                         30.48  14 29.33  26         2400
         CHS  0.70  -2.07 0.46  8  0.47   8-9  4 0 14.30                    3.4            29.41  26         2400
         FLO  0.78  -2.01 0.42 25  0.53 24-25  7 0  9.15                         30.50  14 29.33  26         2400
         GSP  1.81  -1.73 1.37 24  1.43 24-25  5 1 14.01                    6.1  30.47  14 29.38  26         2400
         OGB  0.79        0.44 25  0.49 24-    7 0 11.57                         30.46  14 29.41  26         2400
                                        25
    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  2.21  -1.02 0.74  8 0.74     8 10 0 10.24                  0.0  26.7 30.45 14 29.37  25        2400
         DAV  2.6   -1.7  0.87 17 0.87    17  9 0 19.1      T 10  1  0     T 251.2                           0700    

    Virginia:

    Arlington - " IN WASHINGTON DC...APRIL 2010 FEATURED TEMPERATURES WELL ABOVE NORMAL...THE SECOND CONSECUTIVE MONTH TO DO SO. THE AVERAGE APRIL MONTHLY TEMPERATURE WAS 4.7F DEGREES ABOVE NORMAL...WHICH COINCIDENTALLY MATCHED THE MARCH DEPARTURE FROM NORMAL. IT WAS THE 5TH WARMEST APRIL ON RECORD AND THE WARMEST APRIL SINCE 1994. THE FIRST WEEK OF APRIL 2010 WAS ESPECIALLY WARM. WITH AN AVERAGE 7-DAY TEMPERATURE OF 67.6F...IT WAS THE WARMEST FIRST WEEK IN APRIL EVER...BEATING THE APRIL 1ST-7TH 1929 AVERAGE TEMPERATURE OF 65.4F. MAX TEMPERATURES OF 90 DEGREES WERE RECORDED ON BOTH APRIL 6TH AND 7TH. THIS MARKED THE EARLIEST FIRST OCCURRENCE OF REACHING 90F OR HIGHER IN A CALENDAR YEAR SINCE APRIL 6TH 1942 WHEN THE MAX HIT 92F. THE EARLIEST DATE ON RECORD TO REACH THE 90S IN WASHINGTON IS MARCH 22ND 1907 WHEN THE MAX TEMPERATURE HIT 93F. MIN TEMPERATURES FAILED TO DROP BELOW 40F IN APRIL FOR ONLY THE SIXTH TIME ON RECORD BUT FOR THE FOURTH TIME SINCE 1999. APRIL 2010 WAS DRY WITH WASHINGTON RECORDING ONLY ABOUT HALF OF THE NORMAL MONTHLY PRECIPITATION. IT WAS THE 13TH DRIEST APRIL ON RECORD AND THE DRIEST APRIL SINCE 1991 WHEN ONLY 1.39 INCHES OF RAIN WAS MEASURED. THIS DRY MONTH SNAPPED A STREAK OF THE LAST SIX APRILS ALL HAVING ABOVE NORMAL PRECIPITATION. " - [ + - ] - Notes from NWS Sterling, VA

    Bridgewater - " The month was very dry. We haven't had a thunderstorm so far this year. Thunderstorms have gone north of us. In spite of the dry weather, precipitation for the year is just slightly below normal because of the heavy rains in the earlier months. " - [ + - ] - Comments from Clayton

    Centreville - Paul notes: " The average monthly high of 71.0 and low of 58.9 both occurred on Fri-April 23rd. Second month in a row when the average monthly low temperature has been in the +8 range. - [ + - ]

    Chantilly - Russ adds these notes: " April temperatures averaged 5.0 above normal and precipitation was 1.67" below normal. No measurable snow fell during April. A record maximum temperature occurred on the 5th (85.0), 6th (91.9), and 7th (90.0). A record high minimum temperature occurred on the 6th (61.1), 7th (61.5), and 8th (54.7). A thunderstorm moved through on the 8th, with near misses on the 25th and 26th. Dense fog formed on the 14th, 21st and 22nd. *Please note, anemometer is currently partially obstructed from the Southeast " - [ + - ]

    Dulles - from NWS Sterling (KLWX) come these notes: " TEMPERATURES THIS APRIL WERE WELL ABOVE NORMAL...THE SECOND CONSECUTIVE MONTH TO DO SO. THE AVERAGE APRIL MONTHLY TEMPERATURE WAS 6.1F DEGREES ABOVE NORMAL...WHICH COINCIDENTALLY MATCHED THE MARCH DEPARTURE FROM NORMAL. THE APRIL 2010 MONTHLY AVERAGE TEMPERATURE RANKED 2ND WARMEST ON RECORD. THE WARMEST APRIL WAS 1994...WHEN THE MONTHLY TEMPERATURE THEN AVERAGED 60.1F DEGREES. WITH MARCH 2010 BEING THE WARMEST MARCH ON RECORD...THE COMBINED MARCH-APRIL 2010 AVERAGE TEMPERATURE OF 54.3F RANKS AS THE WARMEST MARCH-APRIL PERIOD IN THE 48 YEARS OF RECORDS AT DULLES. THE FIRST WEEK OF THE MONTH WAS ESPECIALLY WARM. THE AVERAGE TEMPERATURE THE FIRST WEEK OF THE MONTH WAS 67.7F... BEATING THE APRIL 1ST-7TH 1988 AVERAGE TEMPERATURE OF 60.4F. DAILY RECORD MAX TEMPERATURES WERE BROKEN FOR THREE CONSECUTIVE DAYS FROM APRIL 5TH-7TH 2010. A MAX TEMPERATURE OF 86F ON APRIL 5TH...93F ON APRIL 6TH AND 91F ON APRIL 7TH BROKE THE RESPECTIVE DAILY MAX TEMPERATURE RECORDS OF 83F SET ON APRIL 5TH 1985...86F SET ON APRIL 6TH 2005 AND 84F SET ON APRIL 7TH 1991. IT WAS THE SECOND CONSECUTIVE APRIL TO FEATURE THREE CONSECUTIVE DAYS OF SETTING RECORD MAX TEMPERATURES...LAST YEAR DAILY RECORDS FELL FROM APRIL 25TH-27TH. THE MAX TEMPERATURE OF 93F RECORDED ON APRIL 6TH WAS ESPECIALLY NOTEWORTHY AS IT MARKED THE EARLIEST FIRST OCCURRENCE IN A CALENDAR YEAR OF 90F DEGREES OR HIGHER AT DULLES AND IT ALSO TIED THE HIGHEST MAX TEMPERATURE EVER RECORDED AT DULLES DURING THE MONTH OF APRIL. APRIL 2010 WAS DRY WITH DULLES RECEIVING LESS THAN HALF OF THE NORMAL MONTHLY PRECIPITATION. THIS APRIL WAS TIED WITH 1968 FOR THE 4TH DRIEST APRIL ON RECORD AND THE DRIEST APRIL SINCE 1985 WHEN ONLY 0.33 INCHES OF RAIN WAS MEASURED. THIS SNAPPED A STREAK OF THE LAST SIX APRILS ALL HAVING ABOVE NORMAL PRECIPITATION. " - [ + - ]

    Glen Allen - Lowell Koontz adds: " April was much warmer than average as the monthly mean temperature was 61.5F, a +4.9F mean temperature departure, and was much drier than average when compared to Ashland, Virginia records. The 1.94 inches of rain for April was a -1.13 inch departure when compared to the Ashland, VA average and the driest month since February 2009. The maximum rainfall recorded in a day was only 0.55 inches on the 8th. Measurable precipitation occurred on only eight days and this was the clearest month since October 2008. The total wind run for the month was 635 miles less than last April and the daily average temperature range was higher than last April by 4F due in part because of the clear skies. The maximum temperature for April was 91F on the 7th and there were two days (6th, 7th) that the temperature was 90F or higher. The lowest minimum was 36F recorded on the 18th, 28th, and 29th and there were four days with light scattered frost but frost didn't kill tender annual plants. The lowest dew point temperature was on the 17th at 1826 at 23.3F. The maximum wind gust was 39 mph from the south that occurred on the 8th at 1307. The highest barometer recorded for the month was 30.57 inches on the 14th and that was the highest barometer reading since December 12th of 2009 when it was 30.63 inches. The lowest was 29.18 inches on the 26th, the lowest barometric pressure recorded since January 9th, 2009 when it was 29.17 inches. " - [ + - ] 

    Herndon - Randy send these additional comments: " April, like March, was above normal for temperature and below normal for precipitation. The temperatures ranged between a high of 92 and a low of 32. The average high and low were about 4 and 1 degrees above normal, respectively. On the precipitation side, the month was 2.10" below normal with only 1.44" measured. We had no snow events, and multiple light rain events occurring off and on during the month. No heavy rains occurred. We did have thunderstorms in the area on the 25-26th, but we received little rain from them. We have now had 11.38" precipitation for the year that is now almost 2" below normal. The total snowfall for the season ended up at 80.4", which, as mentioned last month, is an all-time record. " - [ + - ]

    Ladysmith - Danny notes: " April brought temperatures that were the most above normal since October 2007. Precipitation was very much below normal. " - [ + - ]

    Portsmouth - " April was considerably milder and drier relative to normal Aprils for the period from 1977 to 2009. The 1.51" of rain was 1.90" BELOW normal rainfall ( 44% of normal) and ranks as the 3rd driest April in the database to 1977. The top 5 driest April months include: 1) 1.21" in 1985 2) 1.23" in 1994 3) 1.51" in 2010 4) 1.59" in 1986 5) 1.71" in 2001. The month's average temp was 3.1 ABOVE normal. Station records included: 6th - TEMPERATURE Maximum 91 [previous 87 1988]; 6th - TEMPERATURE Maximum Minimum 67 [previous 1985]; 7th - TEMPERATURE Maximum 90 [previous 89 1991]; 7th - TEMPERATURE Maximum Minimum 65 [previous 60 1999]; 8th - TEMPERATURE Maximum Minimum 63 [previous 61 1991]; 27th - WIND GUST 29mph [previous 28 mph 1993]. Patchy light frost was noted on the 15th. Frontal passages were noted on these dates: 14th, 17th, 27th. " - [ + - ] 

    North Carolina:

    Greensboro - NWS RAH notes: " AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 87 DEGREES ON APRIL 2ND. THIS TIES THE PREVIOUS RECORD OF 87 SET IN 1967. THE HIGH TEMPERATURE AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 89 DEGREES ON APRIL 6TH. THIS TIES THE PREVIOUS RECORD OF 89 DEGREES... LAST SET IN 1967. THE LOW TEMPERATURE AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT ON APRIL 7TH WAS 60 DEGREES. THIS BREAKS THE PREVIOUS RECORD HIGH MIN FOR THIS DATE OF 59... LAST SET IN 2005. " - [ + - ]

    Moncure - Mac reports: " Basis for 30yr Temperature/Rainfall NWS Climatological Data SANFORD (NC) 8 NE 1970-2000. After an unseasonably cold winter, April started out well above normal but settled in close to normal the rest of the month finishing 2.4 deg above average. However, we have had very little rain after a wet winter. Well below normal. If May does not at least get normal rainfall, it could very well cause drought problems. We already have to water our lawns and gardens. This is way too early. April turned out to be pretty warm and it certainly was the driest month since I've been keeping stats. We finished the month 2.5 degrees above the normal average. Nov of 2009 was the last month that finished above normal. We ended up 1.65 inches below normal on the rainfall. Significant Events: Thunderstorm 9 Apr. Fog Less Than 1/4 mile Visibility 15 Apr. 3 days the Temperature was higher than 90 deg. (That's 15 plus degrees above normal). " - [ + - ]

    Raleigh - Bob adds the comments: " April was a warmer than normal with the average daily high 3.1 degrees above normal. The first 90-degree reading was recorded on the 6th when the high temperature reached 91 degrees. April was also rather dry with only 1.61" of rainfall. No severe weather was observed except an EF-0 tornado in eastern Wake County. " - [ + - ]

    Raleigh - NWS Raleigh (RAH) reports: THE HIGH TEMPERATURE AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 5TH WAS 88 DEGREES. THIS TIES THE OLD RECORD OF 88 SET IN 1986. THE LOW TEMPERATURE AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 7TH WAS 61 DEGREES. THIS TIES THE PREVIOUS RECORD HIGH MIN FOR THIS DATE OF 61... LAST SET IN 2005. " - [ + - ]

    Nearby Cities:

    Davis, WV - from Dave Lesher's website: " April 2010 had a mean temperature that was 3 ABOVE NORMAL and rainfall (liquid) BELOW NORMAL (-1.7") Snowfall for the month was a TRACE which compares with a normal 10" for the month. Rainfall for the year was 19.1", or 1.2" ABOVE normal. The season-to-date snow total was 251.2" and that was 108" ABOVE normal. " - [ + - ]

    Tri-cities, TN - from NWS MRX in Morristown, TN: " The monthly-averaged temperature at Tri-Cities was 58.5 degrees, which was 3.9 degrees above normal. It ranked as the 16th warmest April on record. A record high temperature was broken on the 2nd when the high temperature reached 88 degrees, breaking the previous record of 83 degrees set in 1940. Another record high temperature was broken on the 6th, when the afternoon high peaked at 86 degrees, surpassing the old record of 81 degrees set in 2005. Lastly, another new record high temperature was established on the following day, when the high temperature reached 83 degrees breaking the previous record of 81 degrees set in 2001. The warmest April at Tri-Cities was back in 1954, when the average temperature was 61.8 degrees. Tri-Cities received 2.21 inches of rain in April, which was 1.02 inches below normal. It ranked as the 14th driest April on record. Measurable precipitation occurred on only 10 days, and only three of those days had more than one-quarter of an inch of precipitation. The heaviest precipitation fell on the 8th, when 0.74 inches of precipitation was reported. The driest April of the 73 years of observations was back in 1976, when only 0.21 inches of precipitation was recorded. " - [ + - ]



    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
      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


    For ACON VA/NC/SC Recent Weather News, Search GOOGLE at CNN
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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

         $$$ National Climatic Data Center, Asheville, NC $$$

    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   
    BLK  Virginia Tech, Blacksburg, VA Andrew Earehart September 2009, | aeare07@vt.edu WOO  Woodstock, VA 5NW Lauck Walton - 12/1/85 jwalton@shentel.net
       LDY Ladysmith, VA Danny Jessee 2003 danny@dannyjessee.com
    BRI     Bridgewater, VA Clayton Towers Ctowers19@aol.com WAL   Wallops Island, VA 37 56'26" N 75 27'47" W Wallops Flight Facility Airport
    CEN  Centreville, VA Paul Bassett 1985, 38 50.9788' N LAT. 77 25.6374' W LON. | Elevation 324' | m.psb@verizon.net AVL    Asheville, NC  Asheville Regional Airport 35-25-55N 082-32-15W 670M
    CHO   Charlottesville, VA  Charlottesville-Albemarle Airport ASOS  (Rappahannock County) 38-08-18N 078-27-21W 192M 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
      MON    Moncure, NC  Chatham County - Mac McIlwain mac.mcilwain@embarqmail.com
    FRV     Front Royal, VA  Michael Perritt -  04/08 mjperritt@gmail.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