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

SUMMARY OF CLIMATOLOGICAL DATA 


AUGUST 2011


...CONTINUED ABOVE NORMAL TEMPERATURES...
...THUNDERSTORMS & HURRICANE IRENE PROVIDE EXCESSIVE RAINFALL FOR MANY LOCATIONS...

Until the end of the month, most stations with excessive rainfall totals were the recipients of downpours from typical summer thunderstorm activity. Not to go unnoticed, several stations- particularly those in the western hills and mountains of the three-state area saw little rainfall. Hurricane Irene brought abundant rainfall, damaging winds, and flooding to Southeastern North Carolina and Eastern and Northern Virginia late in the month.

Overall, temperature averages were above normal areawide but were lower when compared with those of July 2011.



  •   1981-2010 NORMALS    From Kevin Shaw: "Here is a one stop shop for basic 1981-2010 climate normals data: http://ggweather.com/normals/index.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 - AUGUST 2011
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    100°
    Arlington
    48°
    Blacksburg
    80.0°
    Norfolk (ORF)
    72.6°
    Blacksburg
    13.48"
    Portsmouth
    1.25"
    Blacksburg
    North Carolina
    102°
    Fayetteville
    55°
    Asheville
    82.3°
    Beaufort
    75.1°
    Asheville
    15.03"
    New Bern
    1.37"
    Greensboro
    South Carolina
    103
    Columbia
    60°
    Anderson
    83.8°
    Columbia
    81.2°
    North Myrtle Beach
    7.95"
    Charleston
    0.97"
    Greenville-Spartanburg


    ( 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 84.0  61.2  72.6   +2.6  90     1 48   23   1  0  0 0 75% 29 310  27   4.0       5 0 0 0  2 2400 AKQ
         BRI 83.06 64.47 73.77        94   1,2 52   24   3  0  0 0 67%                         5 0 0 0  0 0510/1600 LWX
         CEN 85.0  66.3  75.7   +0.3  97     1 54   31   5  0  0 0 67% 43 049  19   1.9  315 5 0 0 0  1 2400 LWX
         CHT 86.7  67.1  76.9   +1.8  99.3   1 56.2 23   8  0  0 0 73% 23 180  18   0.4  360 6 1 0 0  1 2400 LWX
         CHO 88.0  65.9  77.0   +3.0  98   1,2 54   23  10  0  0 0     46 350   7   3.5       5 0 0 0  3 2400 LWX
         DAN 90.3  65.3  77.8   +0.8  97   4,8 54   23  19  0  0 0 67% 46 310  21   5.2       6 0 0 0  1 2400 RNK
         DCA 88.6  71.3  79.9   +1.8 100     1 63 23,30 12  0  0 0 62% 60 340  28   8.3       9 0 0 0  0 2400 LWX
         IAD 87.3  65.3  76.3   +0.9  99     1 52   23   8  0  0 0 67% 45 340  27   6.5       5 0 0 0  1 2400 LWX
         GAV 88.65 68.26 78.45        97     7 57   23  13  0  0 0 68% 52 360  27             4 0 0 0  0 2400 AKQ
         HDV 86.3  65.7  76.0   -0.3  98     1 53   23   7  0  0 0 74% 22 180  24        180 7 0 0 0  0 2400 LWX
         LYH 87.8  64.3  76.1   +2.0  96     8 51   23  13  0  0 0 69% 39 030  27   4.3       6 0 0 0  3 2400 RNK
         NPN 88.7  69.4  78.6   +0.3  96.1   7 58.6 31  12  0  0 0     51 270  27   2.8  090 7 0 0 0  0 2400 AKQ
         FHC 87.34 70.86 79.1   +1.4  96.1   9 61.4 31   9  0  0 0 71% 50 050  27   2.0  030 7 0 0 0  0 2400 AKQ
         NOR 86.8  69.6  78.2   +0.5  95   7,9 59   31   9  0  0 0                             0 0 0 0  0 2400 AKQ
         ORF 87.0  72.9  80.0   +2.1  95 10,25 65   31   8  0  0 0 71% 56 330  27   7.6       7 0 0 0  2 2400 AKQ
         POR 87.0  69.5  78.2   -0.1  95.4 7,9 59.7 31   9  0  0 0 76% 65 320  27   3.5  049 6 0 0 0  0 2400 AKQ
         CTR 88.4  66.1  75.9   +0.4  94.3   7 56.2 31  12  0  0 0 77% 26 315  27   0.2  173 2 0 0 0  0 2400 AKQ
         MEC 87.61 65.42 77.80        95     7 56   23   7  0  0 0                             9 0 0 0  0 1700 AKQ
         RIC 89.6  68.4  79.0   +1.5  99   1,7 60 23,31 13  0  0 0 67% 70 340  27   7.3       8 0 0 0  2 2400 AKQ
         ROA 88.4  67.1  77.8   +2.4  97     4 54   23  11  0  0 0 63% 40 350  18   6.5       6 0 0 0  0 2400 AKQ
         WAL 86.5  69.1  77.8   +2.3  95     7 57   31   7  0  0 0     62 080  27   8.4       0 0 0 0  3 2400 AKQ
         WOO 81.5  65.6  73.6   +0.1  93     2 54   30   3  0  0 0                             9 0 0 0  2 2400 AKQ
         WSH 83.4  64.6  74.0   -0.26 94.7   1 53.5 30   2  0  0 0 79% 22 158  28   0.3  248 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 85.8  64.3  75.1  +2.2  93   3,8 55 23,24  5  0  0 0 70% 37 090  8    4.6      5 0 0 0  3 2400 GSP
         MRH 89.4  75.2  82.3  +3.5  97    11 64    31 11  0  0 0     71 060 27    9.1      9 0 0 0  2 2400 MHX
         CLT 90.4  68.1  79.3  +2.0  98     3 60    28 19  0  0 0 68% 58 350 11    5.0      7 1 0 0  0 2400 GSP
         ECG 89.4  71.2  80.3  +2.7  98     3 63    18 15  0  0 0 72% 74 050 27    8.3      6 0 0 0  4 2400 AKQ
         FAY 93.1  70.9  82.0  +2.4 102   3,4 63    31 24  0  0 0 63% 52 330 27    6.5      6 0 0 0  3 2400 RAH
         GSO 89.4  68.8  79.1  +2.0  97     4 62 23,31 13  0  0 0 63% 38 330 27    6.5      8 0 0 0  1 2400 RAH
         HSE 88.0  75.9  82.0  +3.5  92   2,8 72 20,31  8  0  0 0 73% 87 140 27    9.0      0 0 0 0  2 2400 MHX
         HKY 88.7  67.7  78.2  +1.8  96   3,8 58    23 10  0  0 0     35 270 13    3.6      6 0 0 0  4 2400 GSP
         LBT 91.8  70.7  81.3  +2.3 100   3,4 64 16,31 20  0  0 0 71% 44 350 19    4.7      2 0 0 0  5 2400 ILM
         EWN 91.3  71.6  81.5  +2.4 100     3 65    31 23  0  0 0 72% 74 340 27    6.2      6 0 0 0  3 2400 MHX
         MON 88.2  69.5  78.9  +1.3  96.8   3 59.3  31  8  0  0 0 79% 44 030 27    0.3 225 6 0 0 0  1 2400 RAH
         RDU 89.6  69.7  79.7  +1.2  98     3 62    31 13  0  0 0 66% 39 330 27    5.4      4 0 0 0  2 2400 RAH
         RAL 89.8  67.4  78.6  +1.4  98   3,4 57    31 18  0  0 0     23      27             4 0 0 0  0 2400(T)/1930(P) RAH
         ROX 89.5  67.4  78.5  +3.6  97   2,3 57 19,31 15  0  0 0 71% 39 360 27        320 3 0 0 0  l 2200 RAH
         WHI 91.9  70.2  81.1  +2.7 100.6   4 62.1  31 21  0  0 0 75% 44 360 27    2.2 163 8 0 0 0  0 2400 ILM
         ILM 90.0  72.9  81.5  +1.8  99     8 64    31 16  0  0 0 74% 66 310 27    6.7     13 0 0 0  4 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 93.6  70.4  82.0  +3.5 102     3 60    28  27 0  0 0     47 290 21   5.1       9 0 0 0  0 2400 GSP
         CAE 94.5  73.0  83.8  +3.0 103     3 66 16,28  28 0  0 0 64% 37 330  9   4.7      10 0 0 0  3 2400 CAE
         CRE 89.0  73.4  81.2  +2.3  98     2 66    31   9 0  0 0 77% 49 050 26   7.0       5 0 0 0  3 2400 ILM
         CHS 92.1  74.2  83.2  +2.3  98   4,8 70 19,31  25 0  0 0     43 180 12   6.7      12 0 0 0  1 2400 CHS
                                                                      43 280 23
         FLO 92.8  70.8  81.8  +1.9 100     8 64    16  25 0  0 0 69% 44 350 11   5.9       8 0 0 0  1 2400 ILM
         GSP 92.9  69.8  81.4  +2.8 100   3,8 61    16  27 0  0 0 63% 30 290  8   4.9      10 0 0 0  0 2400 GSP
                                                                      30 360 13 
         OGB 93.0  71.8  82.4  +2.2 102     3 66 17,28  26 0  0 0     39 350  9   4.3       2 0 0 0  4 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 88.1  63.4  75.7  +1.9   96     5 53 23,29 12  0  0 0     39 290   8  2.9       8 0 0 0  0   2400 MRX
         DAV             65     0.0   80     5 45   23   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  1.25  -2.34  0.51  6  0.51     6  9 0 28.50                0.0  8.2                             2400
         BRI  4.58         1.90 14  1.90    14 13 1 32.98                0.0 11.3  30.212 18 29.83  26 29.625 0510/1600
         CEN  4.98  +1.45  1.67 27  1.87 27-28 11 1 25.91                0.0 13.8  30.18  17 29.23  28 29.71  2400
         CHT  4.13  +0.35  1.12 27  1.41 27-28 12 1 26.68                0.0 14.5  30.223 31 29.184 28 29.870 2400
         CHO  3.62   0.00  1.07 14  1.29 13-14 10 1 27.90                                    29.09  28        2400
         DAN  1.47  -2.50  0.91  6  0.91     6  8 0 22.87                0.0 11.0  30.22  31 29.43  27        2400
         DCA  8.92  +5.99  3.33 27  3.83 27-28 12 3 26.30                0.0 10.1            29.09  28        2400
         IAD  3.74  +0.21  1.17 27  1.17    27 12 1 23.70                0.0 10.1            29.09  28        2400
         GAV  6.65         3.75 27  3.83 27-28  9 3 28.60                0.0  9.4  30.24  31 29.20  27 29.88  2400
         HDV  4.32  +0.17  1.38 27             13 1 28.71                0.0 14.5  30.20  31 29.15  28        2400
         LYH  2.06  -1.20  1.42 25  1.42    25  7 1 23.66                0.0  8.4  30.24  31 29.46  28        2400
         NPN  9.47  +4.10  7.71 27  7.97 27-28  7 1 42.90                0.0 16.7  30.21  31 29.75  27        2400
         FHC  7.30  +1.98  1.69 23  2.83   6-7  9 4 26.65                0.0 18.0  30.242 17 28.624 27 29.832 2400
         NOR 12.01  +6.03  8.73 27  8.73    27 10 2 37.76                0.0 21.0                             2400
         ORF 10.79  +1.78  4.18 27  4.26 27-28 12 2 33.95                0.0 21.8  30.21  31 28.58  27        2400
         POR 13.48  +7.88  7.82 27  7.82    27 12 3 36.37                0.0 19.0  30.20  31 28.62  27 29.870 2400
         CTR  4.68  +0.37  2.93 27  2.98 27-28 17 1 31.31                0.0 12.1  30.20  31 29.16  27 29.854 2400
         MEC 12.15         3.80 27  6.75 27-28 11 4 41.87                0.0 10.8  29.97  31 29.11  27 29.66  2400
         RIC  7.10  +2.44  5.36 26  5.37 27-28 11 1 29.59                0.0 10.8  30.24  31 29.13  27        2400
         ROA  1.45  -2.11  0.57 18  0.57    18  6 0 25.09                0.0 10.4  30.24  31 29.52  28        2400
         WAL  8.38  +4.19  6.18 27  6.30 27-28 10 1 25.95                0.0 17.0  30.21  31 28.56  28        2400
         WOO  5.51  +2.07           2.02 13-14 15 2 31.55                0.0       30.22  31 29.54  28        2400
         WSH  2.79  -0.57  0.80 27  1.37 27-28 15 0 30.52                0.0 14.7  30.27  31 29.33  28        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  3.00  -1.40  0.74 12, 0.74 12,14 10 0 29.48                 0.0 20.8  30.21  31 29.64  27         2400
                                14 
         MRH  8.15         3.14 26  3.14    26 11 2 28.90                 0.0    T  30.16  23 28.12  27         2400
         CLT  5.18  +0.96  2.50  5  2.50     5  7 2 29.18                 0.0  8.9  30.21  31 29.54  27         2400
         ECG  6.40  -0.24  4.92 27  5.55 26-27 10 1 24.17                 0.0       30.20  31 28.25  27         2400
         FAY  9.05  +3.56  2.50 29  2.51 29-30 11 4 25.76                                     29.47  27         2400
         GSO  1.37  -2.51  0.47 12  0.79 12-13  7 0 22.22                 0.0  9.9            29.47  27         2400
         HSE  8.23  +1.30  3.67 26  6.08 26-27 12 2 32.92                 0.0  6.0  30.17  31 28.66  27         2400
         HKY  2.52  +1.58  0.52  6  0.53     6 10 0 29.47                 0.0    T  30.18  31 29.55  27         2400
         LBT 10.92  +5.42  2.86 12  3.25 12-13 12 4 31.57                 0.0       30.19  31 29.32  27         2400
         EWN 15.03  +8.38  9.72 27  9.72    27 11 2 31.25                 0.0  4.4  30.18  31 28.43  27         2400
         MON  6.14  +1.98  2.20  6  2.40   6-7  9 2 26.89                 0.0 16.9  30.217 21 29.383 27  29.800 2400
         RDU  8.77  +4.51  4.31  6  4.31     6  6 4 29.28                 0.0  9.0            29.47  27         2400
         RAL  5.41  +1.63           1.18   5-6  9+0 25.93                 0.0  9.1  30.21  31 29.65   9         0730
         ROX  2.82  -1.68  1.28  6  1.28     6  7 2 28.36                 0.0 11.7  30.25  27 29.45  27  29.97  2200
         WHI 12.23  +6.59  4.03 20  5.00 20-21 13 4 40.01                 0.0  9.2  30.183 31 29.230 27  29.877 2400
         ILM 12.52  +5.11  4.09 26  6.46 26-27 17 4 31.01                 0.0  4.0  30.17  31 28.91  27         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  2.96  -0.83 0.70 20  0.72 19-20 11 0 22.75               0.0    T  30.18  31 29.57  27         2400
         CAE  4.01  -1.25 1.11 11  1.16 19-20  8 1 28.74               0.0  4.8  30.18  31 29.53  27         2400
         CRE  4.54  -2.87 1.74 22  2.02 26-27 10 2 23.64               0.0       30.18  31 29.21  27         2400
         CHS  7.95  +0.80 2.98 13  2.98    13 11 4 29.45               0.0  0.2  30.16  31 29.50  27         2400
         FLO  2.74  -2.50 0.99 11  1.66 11-12 10 0 21.51               0.0       30.19  31 29.44  27         2400
         GSP  0.97  -3.51 0.78 20  0.78    20  6 0 28.35               0.0  8.6  30.18  31 29.59  27         2400
         OGB  4.85  -0.43 1.26  6  1.26     6 10 1 28.03                         30.17  31 29.54  27         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  2.47  -1.00 0.89 14 0.89    14 10 0 33.00              0   0.0  15.6  30.15 31 28.79   3        2400
         DAV  6.00  +1.1  1.32  7            16 3 55.6               0   0.0 215.0                            0700    

    Virginia:

    Arlington - " NOTE: AUGUST 2011 WAS THE FIRST MONTH TO INCORPORATE THE NEW 1981-2010 CLIMATE NORMALS THAT WERE CALCULATED BY THE NATIONAL CLIMATIC DATA CENTER. THE NEW NORMALS REPLACED THE 1971-2000 NORMALS. MONTHLY AVERAGED TEMPERATURES WERE SLIGHTLY ABOVE NORMAL THIS AUGUST. MONTHLY TEMPERATURES HAVE BEEN ABOVE NORMAL FOR THE PAST FIVE MONTHS. AFTER A HOT START TO AUGUST WITH DAILY MAX TEMPERATURES RANGING FROM THE MID 90S TO 100F ON SEVEN OF THE FIRST TEN DAYS OF THE MONTH...TEMPERATURES DID NOT GET WARMER THAN 91F DURING THE LAST THREE WEEKS OF THE MONTH. THE MAX TEMPERATURE OF 100F ON THE 1ST BROKE THE PREVIOUS DAILY MAX TEMPERATURE RECORD OF 99F SET IN 2002. THE 100-DEGREE READING WAS THE FIRST TRIPLE DIGIT TEMPERATURE RECORDED IN AUGUST SINCE 2007. THE MIN TEMPERATURE OF 76F ON THE 21ST TIED THE PREVIOUS DAILY HIGH MIN TEMPERATURE RECORD SET IN 1937...1962 AND 1968. AUGUST 2011 WAS SIGNIFICANTLY WETTER THAN NORMAL WITH 8.92 INCHES OF RAINFALL...AND WAS THE 10TH WETTEST AUGUST ON RECORD. IT WAS ALSO THE WETTEST AUGUST SINCE THE 9.17 INCHES IN AUGUST 1967 AND THE WETTEST OF ANY MONTH SINCE THE 10.66 INCHES IN MAY 2008. ABOUT 70 PERCENT OF THE MONTH`S PRECIPITATION FELL ON THREE CALENDAR DAYS (14TH...19TH AND 27TH). THE 3.83 INCHES OF RAIN FROM HURRICANE IRENE ON 27-28 AUGUST WAS THE WETTEST (ONE- OR TWO-DAY) EVENT SINCE 29-30 SEPTEMBER 2010...WHEN 5.01 INCHES OF RAIN WAS MEASURED WITH THE REMNANTS OF NICOLE. A 60 MPH WIND GUST WAS RECORDED AT DCA ON THE 28TH AS HURRICANE IRENE MOVED UP THE MID-ATLANTIC COAST. SUMMER OF 2011... AFTER WASHINGTON DC RECORDED ITS HOTTEST METEOROLOGICAL SUMMER (JUNE-AUGUST) ON RECORD JUST LAST SUMMER...AND THIS SUMMER WAS NOT FAR BEHIND. THE AVERAGE TEMPERATURE DURING THE SUMMER OF 2011 WAS 81.1F...SECOND WARMEST ONLY TO THE 81.3F IN 2010. " - [ + + ] - Notes from NWS Sterling, VA

    Bridgewater - " Hurricane Irene didn't bother us here in the Shenadoah Valley. we got .37 inches of rain from the storm. Rainfall in the month was one inch above normal while the temperature was about normal. There were six thunderstorms.during the month. For the year, we have 22 which is normal. While living on the Eastern Shore of Maryland, Hurricanes really messed up cornfields. The stalks became twisted and bent. Cutters couldn't be used. Each stalk had to be cut by hand. This was really time consuming.This was really a mess! " - [ +/- +] - additional notes from Clayton

    Centreville - " Extremes occurred at opposite ends of the month! August 1 Hottest day of August. 91 and August 31 Coolest day of August with 54 " - [ + + ] - notes from Paul

    Chantilly - Russ reports: " A near miss at my station by Hurricane Irene on the 27th and 28th, after being forced to evacuate from Bethany Beach, DE. Cooled down from record July heat with a mean monthly temperature of 76.9, mean high temperature of 86.7, and mean low temperature of 67.1. Temperatures still averaged above normal (1.8). Temperatures got above 90 8 times, but not by much after hitting 99.3 on the 1st. A record high low temp was set on the 4th (74.4), 7th (75.6), and 21st (72.6). Precipitation was 0.35" above normal. Thunderstorms rolled through on the 1st, 6th, 13th, 18th (hail 0.5" observed), 19th, and 21st. Dense fog observed on the 19th. *Please note, anemometer is currently partially obstructed from the North and East " - [ + + ]

    Chesterfield - Albert adds: " Irene does damage throughout Chesterfield County! " - [ + + ]

    Dulles - from NWS Sterling (KLWX): " NOTE: AUGUST 2011 WAS THE FIRST MONTH TO INCORPORATE THE NEW 1981-2010 CLIMATE NORMALS THAT WERE CALCULATED BY THE NATIONAL CLIMATIC DATA CENTER. THE NEW NORMALS REPLACED THE 1971-2000 NORMALS. MONTHLY AVERAGED TEMPERATURES WERE NEAR NORMAL THIS AUGUST. AFTER A HOT START TO AUGUST WITH DAILY MAX TEMPERATURES IN THE 90S ON SIX OF THE FIRST TEN DAYS OF THE MONTH...90F-DEGREE DAYS WERE ONLY RECORDED ON TWO DAYS DURING THE REMAINDER OF THE MONTH. FOUR DAILY HIGH MIN TEMPERATURE RECORDS WERE TIED IN AUGUST...73F ON THE 4TH...72F ON THE 6TH...74F ON THE 7TH AND 73F ON THE 21ST. PRECIPITATION FOR THE MONTH WAS NEAR NORMAL AND WAS SIGNIFICANTLY LOWER THAN CLIMATE SITES TO THE EAST SUCH AS DCA AND BWI. SUMMER OF 2011... AFTER DULLES RECORDED ITS HOTTEST METEOROLOGICAL SUMMER (JUNE-AUGUST) ON RECORD JUST LAST SUMMER...THIS SUMMER WAS NOT FAR BEHIND. THE AVERAGE TEMPERATURE DURING THE SUMMER OF 2011 WAS 77.4F...SECOND WARMEST ONLY TO THE 77.8F IN 2010. " - [ + + ]

    Glen Allen - Lowell adds this report: " August was warmer than average as the monthly mean temperature was 78.5F, a +1.0F mean temperature departure based on the new normals, and was wetter than average when compared to Ashland, Virginia records. The 6.65 inches of rain for August was a +1.52 inch departure when compared to the Ashland, VA average and the wettest month since December 2009. It was very dry before the rain of the 14th with only 0.64 inches of rain occurring between July 9th and August 12 a period of more than a month. But with Irene it was also the wettest August in the past four years. The maximum rainfall recorded in a day was 3.75 inches on the 27th which was 56 percent of the month's rainfall and measurable precipitation occurred on nine days. The maximum temperature for August was 97 F on the 7th. On thirteen days the maximum temperature was greater than or equal to 90 F. The lowest minimum was 57 F recorded on the 23rd. The maximum wind gust was 52 mph from the north that occurred on the 27th at 1753 hrs. (Also a new record for Glen Allen, VA) The Richmond International Airport had a gust to 71 mph during Hurricane Irene. Irene set a maximum precipitation record for West Henrico Co. - Glen Allen Virginia for a 24 hour period of 3.85 inches and 3.75 inches in a calendar day. Irene set a new wind run record of 284.1 miles on the 27th. (Glen Allen Station records since August of 2008) Irene also gave the lowest barometer since April 26, 2010 of 29.20 inches on the 27th. We also experienced a 5.8 magnitude earthquake on the 23rd at 1351 that was the strongest in 114 years. On May 5, 1897 Giles Co. was estimated to have had an earthquake of 5.8 magnitude. We were also awakened on the 25th at 0107 by a 4.5 magnitude quake as it rattled the metal pulls on the chest of drawers. The Richmond International Airport had 7.10 inches of rain for August, the 25th wettest August in the past 125 years. The Airport had an August mean temperature of 79.0 F which was the 16th hottest August in the past 125 years. They set only two records for the date. On Aug. 1st 99F tied for the highest maximum temperature and the 5.36 inches of rain on the 27th set a new record of rainfall for the date. It was also the largest daily rain since August 30, 2004 when 6.68 inches was recorded. The summer season was 2.2F warmer when compared to Ashland's averages and the rainfall was +0.38 inches above the average.

    " - [ + + ] 

    Herndon - Randy adds: " August was close to normal for temperature and precipitation. The temperatures ranged between a high of 98 and a low of 53. We only had seven days with the temperatures at or above 90 degrees for the high. On the precipitation side, the month was 0.17" above normal with 4.32" measured. We had rain on 13 days spread fairly evenly throughout the month. The heaviest rain (1.38") came on the 27th when tropical storm Irene moved up the coast to the east of us. The lowest pressure recorded during the month also occurred on this date from Irene's passage (29.15). For the year now, we are still over 2" below normal. " - [ - + ]

    Portsmouth - " AUGUST 2011 WAS THE 2nd WETTEST AUGUST IN THE DATABASE TO 1976. THE TOP 5 WETTEST AUGUSTS INCLUDE: 1) 15.06" 1992 2) 13.48" 2011 3) 12.92" 1990 4) 12.03" 2009 5) 11.11" 2000 August's average temperature (78.2) was 0.1 BELOW NORMAL. Rainfall was WEll-ABOVE NORMAL by 7.88" and was 241% of normal relative to normal Augusts for the period from 1976 to 2010. Frontal passages were noted on the 7th, 11th, 15th 21st and 27th. On the 23rd, a temblor was noted at the station at approximately 1:52p and resulted from the 5.8 Richter scale earthquake centered in Mineral, Virginia. At the station, a large shaking thud of the foundation was noted. In addition, glass windows at the station vibrated heavily for about 2 seconds. Major Hurricane Irene impacted the area on the 27th with a 65mph wind gust as the center of the storm moved just to the east-northeast of the station. The lowest recorded barometric pressure here was 28.621", the second lowest barometer reading recorded at this station since 1976. Station Records: 13th - RAINFALL 2.88" [previous 1.71" 1992]; 25th - RAINFALL 1.97" [previous 1.85" 1999]; 27th - RAINFALL 7.82" [previous 1.98" 1998]; 27th - WIND GUST 65mph [previous 63mph 1998]; 28th - WIND GUST 48mph [previous 47mph 1992] " - [ - + ] 

    North Carolina:

    Greensboro - NWS RAH notes: " THE LOW TEMPERATURE AUGUST 4 AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 76 DEGREES. THIS TIES THE OLD RECORD OF 76 LAST SET IN 2010. THE AUGUST MONTHLY PRECIPITATION AT PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 1.37 INCHES.THIS IS THE 5TH DRIEST AUGUST ON RECORD. " - [ + - ] 

    Raleigh - NWS RAH notes: " THE LOW TEMPERATURE AUGUST 4 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 77 DEGREES. THIS BREAKS THE OLD RECORD HIGH MINIMUM OF 75 DEGREES LAST SET IN 2006. THE LOW TEMPERATURE AUGUST 5 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 76 DEGREES. THIS BREAKS THE OLD RECORD HIGH MINIMUM OF 75 DEGREES LAST SET IN 2006. THE LOW TEMPERATURE AUGUST 7 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 75 DEGREES. THIS TIES THE RECORD HIGH MINIMUM OF 75 DEGREES LAST SET IN 2007. THE DAILY RAINFALL AUGUST 6 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 4.31 INCHES. THIS BREAKS THE OLD RECORD OF 1.55 INCHES SET IN 1974. THE DAILY RAINFALL AUGUST 29 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 1.36 INCHES. THIS BREAKS THE OLD RECORD OF 1.31 INCHES SET IN 1959. " - [ + + ]

    Raleigh - Bob reports: " THE AVERAGE DAILY TEMPERATURE FOR AUGUST WAS 1.4 DEGREES ABOVE NORMAL. RAINFALL WAS ALSO ABOVE NORMAL WITH 5.41.". FOR THE YEAR, PRECIPITATION IS 3.58" BELOW NORMAL. THERE WERE SEVERAL OUTBREAKS OF SEVERE WEATHER INCLUDING FRINGE EFFECTS FROM HURRICANE IRENE ON THE 27TH. " - [ + + ]

    Moncure - Mac adds: " Hot!! Humidity High but not as bad as July. Temperatures moderated after mid month. Extra rainfall was great. Looking forward to an early fall. 30YR DATA BASED ON 30YR CLIMATOLOGICAL DATA, SANFORD 8 NE, NC. STATION #317656, CLIMATE DIV 4 " - [ + + ]

    North Whiteville - Christopher reports: " HURRICANE IRENE DATA: Total rainfall: 2.02 inches. Peak wind gust: 44 mph at 0428 EDT from 0 degrees. Minimum barometric pressure recorded: 29.230 inHg. Average sustained wind - August 26-27: 29.32 mph. " - [ + + ]

    Nearby Cities:

    Tri-Cities, TN - from NWS Morristown, TN: " The monthly-averaged temperature at Tri-Cities in August was 75.7 degrees which was 1.9 degrees above normal. It ranked as the 17th warmest August on record. A record high temperature was broken on the 5th when the temperature peaked at 96 degrees breaking the previous record of 95 degrees set in 2002. The warmest August at Tri-Cities was back in 2007 when the average temperature was 79.0 degrees. Tri-Cities received 2.47 inches of rain in August, which was 1.00 inches below normal. It ranked as the 21st driest August on record. Measurable rain occurred on only 10 days and only three of those days had more than one-quarter of an inch of precipitation. The heaviest rain fell on the 14th when 0.89 inches of rain was reported, which also broke the old daily rainfall record of 0.68 inches set 1948. The driest August of the 73 years of observations taken at Tri-Cities was in 2007 when only 0.37 inches of rain was recorded. The seasonal-averaged temperature at Tri-Cities in summer was 76.1 degrees which was 2.8 degrees above normal. It ranked as the 3rd warmest summer on record. The warmest summer at Tri-Cities was back in 2010 when the seasonal-averaged temperature was 77.3 degrees. Tri-Cities received a seasonal total of 9.72 inches of rain in summer, which was 2.34 inches below normal. It tied with 1984 as the 21st driest summer on record. The driest summer at Tri-Cities was in 1987 when only 5.10 inches of rain was recorded. " - [ +  - ]

    Davis, WV - from Dave Lesher's website: " August 2011 had a mean temperature of 65 and that was NORMAL. The month's rainfall total of 6.0 inches was 1.1" ABOVE NORMAL. Rainfall for the year of 55.6" was 16.4" 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
      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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    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