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

SUMMARY OF CLIMATOLOGICAL DATA 


JULY 2011


...CONTINUED ABOVE NORMAL TEMPERATURES...
...THUNDERSTORMS PROVIDE EXCESSIVE RAINFALL FOR SOME LOCATIONS...



  •   1981-2010 NORMALS    From Kevin Shaw: " At long last, based on a great tip from my friend Rick Thoman up in Alaska, here is a one stop shop for basic 1981-2010 normals information: http://ggweather.com/normals/index.htm. Also, I happened to find this one myself, covering a lot of links to record information: http://illiniweather.com/pages/weather_record_links.htm.


  • WANTED: YOUR QUESTIONS    Wanted: Questions for the "Weather Queries" column in Weatherwise Magazine As you go out each morning to take a look at your rain gauge, or any other time you're outdoors, do you ever puzzle about what's going on in the sky? Do you wonder about spells of unusual weather? If you have a question about weather or climate, send it to: weatherqueries@gmail.com. Tom Schlatter, a fellow CoCoRaHS volunteer, has been writing a question and answer column in Weatherwise since 1980, and he welcomes questions from young and old. No question is too simple. In fact, sometimes the "simple" questions are the most profound. Send your questions to weatherqueries@gmail.com, and be sure to include your name and the city or town where you live.


  • "ASK JACK AT  USA TODAY" -   Kevin Shaw of ACON MD/DE/DC sends another resource. It is a neat webpage that will help you find specific historical weather info for the United States and even in some cases, the world! The source is organized by Jack Williams and the USA Today weather page. View here: http://www.usatoday.com/weather/resources/askjack/wfaqpast.htm.


  • 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 - JULY 2011
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    105°
    Dulles
    54°
    Blacksburg
    84.5°
    Arlington
    75.0°
    Blacksburg
    10.89"
    Norfolk (ORF)
    1.20"
    Centreville
    North Carolina
    105°
    Fayetteville
    57°
    Roxboro
    84.8°
    Fayetteville
    76.9°
    Asheville
    6.38"
    Moncure
    1.87"
    Fayetteville
    South Carolina
    104
    Columbia
    64°
    Greenville-Spartanburg
    88.7°
    Charleston
    81.5°
    North Myrtle Beach
    6.94"
    Charleston
    2.08"
    Anderson


    ( 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 85.7  64.3  75.0   +3.9  93    22 54    1   6  0  0 0 78% 27 040  30   2.2      12 0 0 0  7 2400 AKQ
         BRI 89.03 67.35 78.19  +3.89 99    28 56   16  15  0  0 0 64%                         0 0 0 0  0 0510/1600 LWX
         CEN 90.8  70.4  80.6   +3.9 102    22 60    2  19  0  0 0 59% 25 280  13   1.5  315 5 0 0 0  2 2400 LWX
         CHT 92.7  70.4  81.6   +5.2 103.9  22 59.6  2  23  0  0 0 69% 16 158  16   0.2  180 4 0 0 0  0 2400 LWX
         CHO 92.1  69.0  80.5        102    22 57   15  22  0  0 0     43 320   3   2.6       5 0 0 0  4 2400 LWX
         DAN 91.7  68.1  79.9   +1.1 100    29 58 1,15  22  0  0 0 72% 38 090  30   4.1       8 0 0 0  3 2400 RNK
         DCA 93.6  75.4  84.5   +5.3 104    29 67   16  25  0  0 0 59% 52 330   3   7.2       7 0 0 0  0 2400 LWX
         IAD 92.8  69.1  81.0   +5.3 105    22 56    2  24  0  0 0 64% 39 030  13   5.3       4 0 0 0  2 2400 LWX
         GAV 92.13 70.90 81.52       102    22 61   15  22  0  0 0 67% 37 023   3             6 0 0 0  0 2400 AKQ
         HDV 91.2  69.1  80.1   +3.1 100    22 58    2  21  0  0 0 70% 21 315  13        180 6 0 0 0  1 2400 LWX
         LYH 90.7  66.4  78.6   +3.5 100    22 56   15  19  0  0 0 71% 40 240  13   2.7      10 0 0 0  5 2400 RNK
         HAM                                                                                              2400 AKQ
         NPN 92.2  72.0  81.2   +0.9 103.6  23 59.6 15  21  0  0 0     38 180   6   2.2  225 7 0 0 0  0 2400 AKQ
         FHC 91.05 73.55 82.30  +3.2 102.3  22 63.7 15  20  0  0 0 69% 32 226   7   1.4  203   0 0 0  0 2400 AKQ
         NOR 90.6  71.3  80.9   +1.8 101    22 60   15  18  0  0 0                             7 0 0 0  0 2400 AKQ
         ORF 90.8  73.7  82.3   +3.2 103    23 67   16  15  0  0 0 68% 49 200   4   6.9      11 0 0 0  1 2400 AKQ
         POR 91.4  70.6  81.0   +1.7 102.4  22 59.6 15  20  0  0 0 77% 30 248  25   2.3  155 7 0 0 0  1 2400 AKQ
         CTR 90.4  68.6  78.5   +0.6  98.0  22 56.3 15  20  0  0 0 79% 25 090   4   0.0  212 3 0 0 0  0 2400 AKQ
         MEC 91.70 69.90 81.0        100    22 59   15  17  0  0 0                             8 0 0 0  0 1700 AKQ
         RIC 92.8  71.1  82.0   +2.7 103    29 61   15  23  0  0 0 67% 53 160   4   5.4       8 0 0 0  0 2400 AKQ
         ROA 90.5  69.9  80.2   +4.0  99 21,29 59    1  18  0  0 0 65% 75 300   4   4.4      10 1 0 0  1 2400 AKQ
         WAL 89.1  72.1  80.6   +4.0 100    22 61   15  12  0  0 0     37 250   4   7.0       1 0 0 0  2 2400 AKQ
         WOO 86.3  69.0  77.7   +3.0  96    23 61    1   9  0  0 0                             5 0 0 0  2 2400 LWX
         WSH 88.1  67.6  77.8   +2.23 97.6  22 58   16  12  0  0 0 79% 18 068   3   0.2  225 7 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 86.7  67.0  76.9  +3.9  92 20,30 60     1 11  0  0 0 73% 39 240  4    3.7      7 0 0 0  7 2400 GSP
         MRH 89.1  77.8  83.5        98    30 68 17,18 11  0  0 0     41 200  9   10.5      6 0 0 0  0 2400 MHX
         CLT 92.8  70.7  81.8  +1.5 101    30 63     2 25  0  0 0 69% 47 330 13    4.6      8 0 0 0  0 2400 GSP
         ECG 91.7  72.7  82.2  +2.4 101    29 66 17,18 20  0  0 0 71% 38 220  6    7.4      7 0 0 0  4 2400 AKQ
         FAY 96.2  73.3  84.8       105    30 64 16,16 30  0  0 0 62% 41 320 24    6.4     11 0 0 0  0 2400 RAH
         GSO 90.9  71.2  81.0  +3.1  98    29 65   1,2 20  0  0 0 67% 48 300 24    5.2     13 0 0 0  1 2400 RAH
         HSE 87.5  76.9  82.2  +3.0  94    30 68    18  5  0  0 0 73% 38 260 24    8.7      0 0 0 0  0 2400 MHX
         HKY 89.8  70.2  80.0  +2.3  97    29 62 15,16 21  0  0 0     43 230  3    2.7     13 0 0 0  5 2400 GSP
         LBT 93.9  73.0  83.5  +4.3 101 21,30 66 17,18 25  0  0 0 70% 46 160 22    4.5      2 0 0 0  3 2400 ILM
         EWN 92.8  72.6  82.7  +2.4 102    29 63 16,17 24  0  0 0 71% 39 210 24    5.8      9 0 0 0  1 2400 MHX
         MON 92.4  70.4  81.4  +2.2 101.0  23 61.4   2 21  0  0 0 75% 26 225 25    0.3 225 8 0 0 0  1 2400 RAH
         RDU 95.3  72.0  83.7  +4.9 104    29 60    15 24  0  0 0 62% 64 210 30    5.4     14 0 0 0  0 2400 RAH
         RAL 94.0  70.9  82.5  +3.7 104    29 61 15,16 24  0  0 0     27      24             8+0 0 0  0 2400(T)/1930(P) RAH
         ROX 92.5  70.4  81.6  +5.2 100 22,29 57.0  15 24  0  0 0 69% 34 360 23        070 6 0 0 0  l 2200 RAH
         WHI 94.4  72.1  83.2  +3.3 102.3  30 63.4  17 24  0  0 0 72% 36 217 13    2.0 179 7 0 0 0  2 2400 ILM
         ILM 92.1  73.3  82.7  +1.6 102    13 63    17 17  0  0 0 71% 44 310 13    7.1     12 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 S    CWA
         -------------------------------------------------------------------------------------------------------
         AND 93.9  72.0  83.0  +3.3 100    30 66    15  27 0  0 0     39 190 20   4.6      13 0 0 0  3 2400 GSP
         CAE 96.4  74.6  85.5  +3.5 104 22,23 68    18  29 0  0 0 64% 46 270  6   4.4      11 0 0 0  1 2400 CAE
                                                                      46 300 25
         CRE 88.7  74.4  81.5  +2.0  96    13 66 17,18  10 0  0 0 77% 38 270 24   9.0       4 0 0 0  2 2400 ILM
         CHS 92.5  74.9  88.7  +1.6  99 13,22 66    18  24 0  0 0     59 230  9   7.2      10 0 0 0  1 2400 CHS
                                                                      43 280 23
         FLO 95.4  72.7  84.0  +2.9 102    22 65 17,18  27 0  0 0 69% 36 290  5   5.7       7 0 0 0  6 2400 ILM
         GSP 92.9  71.4  82.2  +3.4  99    12 64    16  27 0  0 0 68% 29 030 19   4.5      11 0 0 0  2 2400 GSP
         OGB 95.1  72.9  84.0  +2.2 102 20,22 66    18  28 0  0 0     39 050 31   4.4       0 0 0 0  2 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 89.4  67.7  78.6  +4.4   95    11 57    1 20  0  0 0     39 310  23  2.0      12 0 0 0  6   2400 MRX
         DAV             68           88    71 50    1  0  0  0 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  3.78  -0.39  2.01  8  2.01     8  9 1 27.25                0.0  8.2                             2400
         BRI  2.04  -2.01  0.74  8  0.76   8-9  6 0 28.40                0.0 11.3  30.212 18 29.83  26        0510/1600
         CEN  1.20  -2.47  0.41 25  0.41    25  6 0 20.93                0.0 13.8  30.23  17 29.75  26 29.99  2400
         CHT  2.21  -1.36  1.11  8  1.11     8  7 0 22.55                0.0 14.5  30.190 17 29.695 26 29.924 2400
         CHO  2.87         1.07  8  1.07     8  8 1 24.28                                    29.71   8        2400
         DAN  3.88  -0.56  2.17  8  2.21   8-9  8 3 21.40                0.0 11.0  30.24  17 29.71   8        2400
         DCA  3.03  -0.63  1.05 13  1.05    13  6 1 17.38                0.0 10.1            29.71   8
         IAD  2.58  -0.99  1.27  8  1.27     8  6 1 19.96                0.0 10.1            29.71   8        2400
         GAV  3.69         1.71  8  1.72   8-9  9 1 21.95                0.0  9.4  30.22  17 29.71   8 29.93  2400
         HDV  4.13  +0.38  1.52 25              5 3 24.39                0.0 14.5  30.17  17 29.68  26        2400
         LYH  2.99  -1.40  1.39 13  1.39    13 10 1 21.60                0.0  8.4  30.26  17 29.75   8        2400
         HAM                                                                                                  2400
         NPN 10.32  +4.80  2.63  9  4.67   8-9  8 4 33.43                0.0 16.7  30.23  17 29.69  25        2400
         FHC  7.24  +1.98  1.69 23  2.83   6-7  9 4 26.65                0.0 18.0  30.242 17 29.706 25 29.959 2400
         NOR  8.33  +3.07  2.12 31  2.12    31 10 4 25.75                0.0 21.0                             2400
         ORF 10.89  +5.72  2.37 24  4.49 24-25 10 6 27.52                0.0 21.8  30.23  17 29.70  25        2400
         POR  3.96  -1.27  0.99  6  0.99     6  8 0 22.89                0.0 19.0  30.24  17 29.71  25 29.950 2400
         CTR  8.82  +4.51  2.82  3  3.14   8-9 12 3 26.63                0.0 12.1  30.21  17 29.69  25 29.919 2400
         MEC  7.48         3.04  9  3.04     9 12 3 29.72                0.0 10.8  29.97 16, 29.56   8 28.77  2400
                                                                                          17  
         RIC  3.63  -0.88  1.72  8  1.73   8-9  9 1 22.49                0.0 10.8  30.25  17 29.72  25        2400
         ROA  3.76  -0.24  1.48  4  1.48     4  6 1 23.64                0.0 10.4  30.25  17 29.75   8        2400
         WAL  2.83  -0.73  1.28  8  1.58   8-9 10 1 17.57                0.0 17.0  30.23  17 29.70  26        2400
         WOO  1.49  -2.51           0.66   7-8  7 0 26.04                0.0 12.8  30.24  17 29.89  26        0800
         WSH  2.83  -1.22  1.32  3  1.32     3  9 1 27.73                0.0 14.7  30.23  17 29.77  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  3.33  -0.54  1.82  8  1.82     8 11 1 26.48                 0.0 20.8  30.25  17 29.75   8         2400
         MRH  2.46         0.93  8  1.21   7-8 10 0 20.75                 0.0    T  30.23  17 29.76  13         2400
         CLT  3.53  -0.26  1.64 30  1.66 30-31  9 1 24.00                 0.0  8.9  30.25  17 29.74   8         2400
         ECG  4.52  -0.43  3.27  6  3.27     6 11 1 17.77                 0.0       30.24  17 29.73  25         2400
         FAY  1.87         1.14  5  1.40   5-6  7 1 16.71                                     29.74   8         2400
         GSO  3.55  -0.89  1.66  8  1.73   8-9 10 1 20.85                 0.0  9.9            29.74   8         2400
         HSE  6.19  -1.24  2.07 25  2.60 25-26  8 2 24.69                 0.0  6.0  30.23  17 29.76  26         2400
         HKY  5.96  +1.79  2.34  7  2.45   7-8 14 2 26.95                 0.0    T  30.22  17 29.71   8         2400
         LBT  4.61  -1.00  2.23  5  2.76   4-5 11 1 20.65                 0.0       30.22  17 29.73  13         2400
         EWN  3.04  -3.44  0.81  8  1.08   7-8 10 0 16.22                 0.0  4.4  30.24  17 29.76  13         2400
         MON  6.38  +1.56  1.35 25  1.78 30.31 10 2 20.74                 0.0 16.9  30.235 17 29.745  8  29.990 2400
         RDU  5.49  +1.20  1.38  4  3.25 30-31  8 3 20.51                 0.0  9.0            29.74   8         2400
         RAL  3.84  -0.45           0.96 29-30  9+0 20.52                 0.0  9.1  30.14  16 29.76   9         0730
         ROX  5.71  +1.12  3.29  6  3.29     6  8 2 25.54                 0.0 11.7  30.32  17 29.82   8  30.07  2200
         WHI  7.64  +2.11  2.86  9  2.95  9-10 11 3 27.78                 0.0  9.2  30.219 17 29.732 13  29.969 2400
         ILM  3.53  -4.09  1.35 25  1.70 25-26 11 2 18.49                 0.0  4.0  30.22  17 29.73  13         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  2.08  -1.55 0.74  5  0.75   5-6  9 0 19.79               0.0    T  30.23  17 29.73   8         2400
         CAE  6.17  +0.63 1.09  6  2.09   5-6 11 2 24.73               0.0  4.8  30.21  17 29.76  25         2400
         CRE  2.97  -2.22 0.98 26  1.63 25-26  8 0 19.10               0.0       30.21  17 29.75  13         2400
         CHS  6.94  +0.41 2.71  9  2.71     9 12 3 21.50               0.0  0.2  30.14  23 29.81  26         2400
         FLO  4.61  -0.67 2.34  5  2.34     5  0 0 18.77               0.0       30.21  17 29.76  13         2400
         GSP  5.23  +0.58 2.01 25  2.01    25 10 1 27.38               0.0  8.6  30.23  17 29.72   8         2400
         OGB  4.99  -0.30 3.56 26  3.58 25-26  7 1 23.18                         30.20  17 29.78  25         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  3.85  -0.36 1.37 22 2.47 22-23 11 2 30.53              0   0.0  15.6  30.20 17 29.73   8        2400
         DAV  5.60   0.0  1.21 14            16 3 49.6               0   0.0 215.0                            0700    

    Virginia:

    Arlington - " THE MAIN STORY THIS JULY WAS THE RECORD HEAT. THE FOLLOWING IS A COMPILATION OF SOME OF THE MANY RECORDS THAT WERE BROKEN AT WASHINGTON DC THIS MONTH... JULY 2011 WAS THE HOTTEST JULY AND HOTTEST MONTH ON RECORD. THE MONTHLY AVERAGE TEMPERATURE OF 84.5F SMASHED THE PREVIOUS HOTTEST JULY/MONTH AVERAGE OF 83.1F SET IN JULY 2010 AND JULY 1993. THE MAX TEMPERATURE AVERAGED 93.6F FOR THE MONTH...WHICH WAS THE HIGHEST MAX TEMPERATURE FOR JULY AND FOR ANY MONTH. THE PREVIOUS RECORD WAS 92.8F SET IN JULY 1999. THE MIN TEMPERATURE AVERAGED 75.4F FOR THE MONTH...WHICH WAS THE WARMEST MIN TEMPERATURE FOR JULY AND FOR ANY MONTH. THE PREVIOUS RECORD WAS 73.9F SET LAST JULY 2010. THE MIN TEMPERATURE DID NOT DROP BELOW 67F DURING THE ENTIRE MONTH FOR THE FIRST TIME ON RECORD. TWO NEW DAILY RECORD HIGHS WERE SET...102F ON THE 23RD AND 104F ON THE 30TH. A MAX TEMPERATURE OF 104F ON JULY 29TH WAS TIED FOR THE 5TH ALL-TIME HIGHEST DAILY TEMPERATURE ON RECORD. THE HOTTEST DAY IN WASHINGTON ON RECORD IS 106F ON JULY 20TH 1930 AND AUGUST 6TH 1918. JULY 2011 HAD THE MOST NUMBER OF DAYS OF 90F OR HIGHER IN ANY MONTH...WHEN TEMPERATURES OF 90F OR HIGHER WERE RECORDED ON 25 DAYS. PREVIOUS HIGHEST NUMBER OF DAYS HITTING 90F OR BETTER WAS 24 IN JULY 1987 AND JULY 1993. A NEW RECORD WAS SET FOR THE NUMBER OF CONSECUTIVE DAYS WHERE THE TEMPERATURE DID NOT DROP BELOW 80F...4 DAYS FROM THE 21ST THROUGH THE 25TH. THIS JULY ALSO FEATURED THE MOST NUMBER OF DAYS FOR ANY MONTH WHERE THE TEMPERATURES STAYED AT OR ABOVE 80F IN WASHINGTON DC...7. NOTE...ALL CLIMATE DATA AND RECORDS DISCUSSED ABOVE ARE PRELIMINARY UNTIL THE CLIMATE DATA ARE REVIEWED AND PUBLISHED BY THE NATIONAL CLIMATIC DATA CENTER. " - [ + - ] - Notes from NWS Sterling, VA

    Bridgewater - " The month was hot and dry. For the first nine days, 1.67 inches of rain. On the last twenty-two days, only .37 inches occurred. There were 15 days with temperatures of 90 degrees or above. In spite of the dry weather in July, the precipitation for the year is 6.03 inches above normal. " - [ + - ] - additional notes from Clayton

    Chantilly - Russ sends these additional notes: " HOT HOT HOT! July 2011 was the hottest month ever recorded at this station, with the mean monthly temperature of 81.6, mean high temperature of 92.7 and mean low temperature of 70.4. Temperatures averaged 5.2 above normal. Temperatures exceeded 90 a record 23 times. A record high temperature was set on the 22nd (103.9) and 29th (101.3). A record high low temp was set on the 12th (72.2) and 21st (76.8). A record high low temp was set on the 20th (75.5), 22nd (77.6), 23rd (77.7), 24th (79.8 - extreme event for July), 27th (74.2) and 30th (76.4). Precipitation was 1.36" below normal. Thunder was observed on the 11th. Thunderstorms rolled through on the 3rd, 8th, 13th and 25th. *Please note, anemometer is currently partially obstructed from the North and East " - [ + - ]

    Dulles - from NWS Sterling (KLWX): " THE MAIN STORY THIS JULY WAS THE RECORD HEAT. THE FOLLOWING IS A COMPILATION OF SOME OF THE MANY RECORDS THAT WERE BROKEN AT DULLES THIS MONTH... JULY 2011 WAS THE HOTTEST JULY AND HOTTEST MONTH ON RECORD. THE MONTHLY AVERAGE TEMPERATURE OF 81.0F SMASHED THE PREVIOUS HOTTEST JULY/MONTH AVERAGE OF 79.7F SET IN JULY 1993. THE MAX TEMPERATURE AVERAGED 92.8F FOR THE MONTH...WHICH WAS THE HIGHEST MAX TEMPERATURE FOR JULY AND FOR ANY MONTH. THE PREVIOUS RECORD WAS 92.5F SET LAST JULY 2010. THE MIN TEMPERATURE AVERAGED 69.1F FOR THE MONTH...WHICH WAS THE SECOND WARMEST MIN TEMPERATURE FOR JULY...SECOND ONLY TO 69.4F IN JULY 1994. TWO DAILY RECORD MAX TEMPERATURES WERE BROKEN...105F ON THE 22ND AND 103F ON THE 29TH...AND ONE WAS TIED...99F ON THE 23RD. THREE DAILY RECORD HIGH MIN TEMPERATURES WERE BROKEN THIS JULY... 76F ON THE 22ND...76F ON THE 23RD AND 76F ON THE 30TH...AND ONE WAS TIED...75F ON THE 20TH. THE READING OF 105F ON JULY 22ND WAS THE HIGHEST TEMPERATURE EVER RECORDED AT DULLES. THIS BROKE THE PREVIOUS RECORD OF 104F SET ON JULY 16TH 1988 AND AUGUST 20TH 1983. JULY 2011 HAD THE MOST NUMBER OF DAYS OF 90F OR HIGHER IN ANY MONTH...WHEN TEMPERATURES OF 90F OR HIGHER WERE RECORDED ON 24 DAYS. THE PREVIOUS HIGHEST NUMBER OF DAYS HITTING 90F OR BETTER WAS 21 IN JULY 1987...JULY 1988 AND JULY 1999. DULLES RECORDED THREE DAYS OF TEMPERATURES REACHING 100F THIS JULY...WHICH IS TIED FOR THE MOST IN ONE MONTH WITH JULY 1980 AND JULY 1988. " - [ + - ]

    Glen Allen - Lowell Koontz reports: " July was extremely hot again this year. The Richmond International Airport had a mean monthly average of 82.1F which was only 0.7F less than last year, which was the hottest July since temperature records were started in 1880. The July mean average temperature here was 81.5F a +5.1F departure when compared to Ashland's average. July's mean was only 0.5F less this year when compared to last July. The 3.69 inches of rainfall for July at Glen Allen was a -0.66 inch departure when compared to Ashland's average. The Richmond International Airport had 3.63 inches and was the 47th driest from 1887 to 2011. July had 9 days with measurable rain with 1.71 inches or 46% of the month's rainfall occurring on the 8th. The Richmond International Airport had 1.72 inches on the 8th, which is now a new daily record amount there. At Glen Allen July had 22 days with 90F or above temperatures the same as last year. The maximum temperature for July was 102F recorded on July 22nd which is the second highest maximum temperature ever recorded here. But with the high relative humidity the heat index hit 117.6F at 1358; this was higher than any reading last year. The Airport had 103F on the 29th, which set a daily maximum temperature record for the date. They also set three daily high minimum temperature records on the 12th, 22nd, and 30th. The minimum temperature on the 12th was 81F, which makes it the warmest night ever recorded for Richmond, Virginia. On 20 nights the minimum temperature was 70F or higher at the Airport. A wind gust of 35 mph on the 3rd is thought to be the strongest wind gust recorded for July that occurred in a thunderstorm in which lightning hit within 50 feet of my weather station and destroyed the anemometer. (see pic with a click here) The other equipment damaged was a Davis transmitter module #6152 which included the sun, rain, wind, temperature and relative humidity. The wireless leaf and soil moisture/temperature transmitter #6345 and both leaf wetness sensors, solar radiation sensor, temperature/relative humidity sensor, intercom system were destroyed. It also damaged two thermometers that monitored soil temperature and leaf wetness sensor temperature. As of July 30th the Glen Allen Weather Station is back to full operation. [Editor's note: Lowell also included a spreadsheet of the changes in normals for Richmond (RIC) from 1980 to 2010. You can view his work here. " - [ + - ] 

    Herndon - Randy sends these additional notes: " July was above normal for temperature and precipitation. The temperatures ranged between a high of 100 and a low of 58. The average highs/lows were 4.5 and 1.8 degrees above normal, respectively. This was the hottest July that I have ever recorded at this location. On the precipitation side, the numbers were very misleading. The month was 0.38" above normal with 4.13" measured. However, we only had rain on five widely scattered days with three days accounting for 94% of the month's rain. The rest of the month was very dry. The heaviest rain (1.52") came on the 25th; for the year now we are 2.3" below normal. " - [ + + ]

    Portsmouth - " July's average temperature (81.0) was 1.7 ABOVE NORMAL. Rainfall was BELOW NORMAL by 1.27" and was 76% of normal relative to normal Julys for the period from 1976 to 2010. Frontal passages were noted on the 9th, 13th, 26th and 30th. Station Records: 6th - RAINFALL 0.99" [previous 0.49" 1981]; 15TH - TEMPERATURE Minimum 60 [previous 61 2009]; 16TH - TEMPERATURE Minimum 62 [previous 66 in 1981]; 22ND - TEMPERATURE Maximum 102 [previous 99 in 1998]; 23RD - TEMPERATURE Maximum 102 [previous 100 in 2010]. " - [ + - ] 

    North Carolina:

    Greensboro - NWS RAH notes: " THE AVERAGE TEMPERATURE FOR JULY AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 81.1. THIS IS THE SECOND WARMEST JULY ON RECORD. THE LOW TEMPERATURE JULY 12 AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 78 DEGREES. THIS TIES THE ALL TIME RECORD HIGH MINIMUM PREVIOUSLY SET IN 2010. THE LOW TEMPERATURE JULY 12 AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 78 DEGREES. THIS BREAKS THE OLD RECORD OF 76 LAST SET IN 2005. THE LOW TEMPERATURE JULY 21 AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 76 DEGREES. THIS BREAKS THE OLD RECORD OF 74 LAST SET IN 2010. THE LOW TEMPERATURE JULY 22 AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 77 DEGREES. THIS BREAKS THE OLD RECORD OF 76 LAST SET IN 2010. THE LOW TEMPERATURE JULY 30 AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 77 DEGREES. THIS BREAKS THE OLD RECORD OF 74 DEGREES SET IN 1931. " - [ + - ] 

    Raleigh - NWS RAH notes: " THE AVERAGE TEMPERATURE FOR JULY AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 83.7. THIS IS THE WARMEST JULY ON RECORD ... BREAKING THE PREVIOUS RECORD OF 82.5 SET IN 1993. FIVE CONSECUTIVE DAYS OF HIGH TEMPERATURES OVER 100 DEGREES WERE RECORDED AT RALEIGH-DURHAM INTERNATIONAL AIRPORT JULY 20 THROUGH JULY 24. THIS BREAKS THE OLD RECORD OF FOUR CONSECUTIVE DAYS LAST SET JUNE 7 THROUGH JUNE 10 OF 2008. THE HIGH TEMPERATURE JULY 4 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 99 DEGREES. THIS TIES THE OLD RECORD OF 99 DEGREES SET IN 2002. THE HIGH TEMPERATURE JULY 12 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 100 DEGREES. THIS BREAKS THE OLD RECORD OF 98 SET IN 1986. THE HIGH TEMPERATURE JULY 20 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 100 DEGREES. THIS TIES THE OLD RECORD OF 100 DEGREES SET IN 1977. THE HIGH TEMPERATURE JULY 21 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 102 DEGREES. THIS TIES THE OLD RECORD OF 102 SET IN 1952. THE HIGH TEMPERATURE JULY 22 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 103 DEGREES. THIS TIES THE OLD RECORD OF 103 DEGREES SET IN 1952. THE HIGH TEMPERATURE JULY 24 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 101 DEGREES. THIS BREAKS THE OLD RECORD OF 100 DEGREES LAST SET IN 2010. THE HIGH TEMPERATURE JULY 29 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 104 DEGREES. THIS TIES THE OLD RECORD OF 104 SET IN 1952. THE LOW TEMPERATURE JULY 3 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 72 DEGREES. THIS TIES THE OLD RECORD HIGH MINIMUM LAST SET IN 1997. THE LOW TEMPERATURE JULY 12 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 78 DEGREES. THIS BREAKS THE OLD RECORD OF 75 LAST SET IN 2005. THE LOW TEMPERATURE JULY 21 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 77 DEGREES. THIS BREAKS THE OLD RECORD OF 76 LAST SET IN 1995. THE LOW TEMPERATURE JULY 22 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 78 DEGREES. THIS BREAKS THE OLD RECORD OF 76 DEGREES LAST SET IN 1991. THE LOW TEMPERATURE JULY 23 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 78 DEGREEES. THIS BREAKS THE OLD RECORD OF 76 DEGREES LAST SET IN 2010. THE LOW TEMPERATURE JULY 24 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 79 DEGREES. THIS TIES THE OLD RECORD OF 79 SET IN 2010. THE LOW TEMPERATURE JULY 30 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 75 DEGREES. THIS TIES THE OLD RECORD OF 75 DEGREES LAST SET IN 2008. " - [ + + ]

    Raleigh - Bob reports: " TEMPERATURES SOARED IN JULY WITH THE 100 DEGREES OR HIGHER RECORDED ON SEVEN DAYS. HOWEVER, PRECIPITATION WAS BELOW NORMAL WITH 3.84". FOR THE YEAR, PRECIPITATION IS 5.21" BELOW NORMAL. NO SEVERE WEATHER WAS OBSERVED AT THIS STATION. " - [ + - ]

    Moncure - Mac adds these notes: " Very Hot!! Humidity Oppressive!. While rain total is great, too late and widely sporadic. Trees began dropping leaves in early July, 2 months early. Average Noon-6PM Heat Index 101.8, High 117.6. 30YR DATA BASED ON 30YR CLIMATOLOGICAL DATA, SANFORD 8 NE, NC. STATION #317656, CLIMATE DIV " - [ + + ]

    North Whiteville - Christopher reports: " " - [ + - ]

    Nearby Cities:

    Tri-Cities, TN - from NWS Morristown, TN: " The monthly-averaged temperature at Tri-Cities in July was 78.6 degrees which was 4.4 degrees above normal. It ranked as the 2nd warmest July on record. A record high temperature was tied on the 11th when the temperature peaked at 95 degrees tying the previous record set in 1988. The warmest July at Tri-Cities was back in 1993 when the average temperature was 79.6 degrees. Tri-Cities received 3.85 inches of rain in July, which was 0.36 inches below normal. It ranked as the 29th driest July on record. Measurable rain occurred on only 11 days and only three of those days had more than one-quarter of an inch of precipitation. The heaviest rain fell on the 22nd when 1.37 inches of rain was reported. More than an inch of rain fell on the next day as well when 1.10 inches was recorded. The driest July of the 73 years of observations taken at Tri-Cities was in 1995 when only 0.67 inches of rain was recorded. " - [ +  - ]

    Davis, WV - from Dave Lesher's website: " July 2011 had a mean temperature of 68. The month's rainfall total of 5.6 inches was NORMAL. Rainfall for the year of 49.6" was 15.3" ABOVE NORMAL. " - [ M  +/- ]



    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 Weather Headlines visit the National Weather Service Homepage
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    http://www.weather.gov
     

    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:

       Coast Guard Air Station 36-15-47N 076 10-58W 11M
    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   
      WOO  Woodstock, VA 5NW Lauck Walton 12/1/85 jwalton@shentel.net
       LDY Ladysmith, VA Danny Jessee 2003 STATION CLOSED 8/31/2010 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 Airport 35-12-48N 080-56-55W 220M
    IAD   Dulles - Washington-Dulles International Airport  38-56-05N 077-26-51W 93M   
    FCH    Falls Church, VA Erica Page 3/7/94 Windie1970@aol.com HKY  Hickory, NC 
    HAM    Hampton, VA 5NE Dave Kessel 1989 davidkessel@cox.net ECG  Elizabeth City, NC, 
    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
    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
      RAL    Raleigh, NC 7NNW  Bob Woodson -  6/1/93 kf4mmm@qsl.net
    LKU     Louisa, VA 1N Joseph Bowers 1944 - NWS ID  44-5050-02 STATION CLOSED RDU   Raleigh-Durham, NC Raleigh-Durham International Airport 35-52-14N 078-47-11W 130M
    LOU     Louisa, VA 6S John Bullock (about 1970) STATION CLOSED ROX    Roxboro, NC 2SE Merriell A. Jay 1/93
         WHI   North Whiteville, NC Christopher Crawley 12/10 34.413744N / 078.751908W
    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 STATION CLOSED 5/31/10 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