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

SUMMARY OF CLIMATOLOGICAL DATA 


APRIL 2011


...TORNADOES RAMPAGE ACROSS THE THREE-STATE AREA...

Like in March 2011, April 2011 saw a mix of above and below normal temperature averages as well as a mix of above and below normal rainfall totals.

That aside, the tornadic outbreaks during the month across the entire three-state area certainly were the highlight weather events. As many of you noted, it's difficult to remember - especially for those of us who have been keeping weather records for 30, 40, and 50 years - such a high level of severe weather with the degree of tornadic development that we saw this month (that grew even worse in May for the nation's midsection). The unusually severe weather was noted early in March across the nation's midsection and south; but rarely do we see that pattern migrate this far east so soon in the year. Many have noted the prolonged cool temperatures remaining over the northern half of the United States while the usual surge of warm and humid air moved into the southern extremes of the prolonged chilly temps. The contrast between the air masses created a persistent boundary zone that combined with an aggressive jet stream to fuel the ongoing tornadic outbreak. In mid-April, the tornadoes killed over 40 people across 6 southern, southeastern, and lower mid-Atlantic states. In Virginia, 5 people were reported dead in the Gloucester area as a F2/F3 "long track" tornado touched down in Surry County and moved to Gloucester. In North Carolina, dozens of twisters (over 60 individual tornadoes were reported) left over 20 people dead, with 11 people dead across Bertie County from a tornado lasting less than 15 minutes. The NWS Raleigh has its reports of the April storms archived at http://www.erh.noaa.gov/rah/news/ .


  • 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 2011
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    90°
    Norfolk (FHC)
    29°
    Chesterfield
    63.7°
    Norfolk (FHC)
    55.5°
    Blacksburg
    9.36"
    Washington (WSH)
    1.21"
    Norfolk (ORF)
    North Carolina
    90°
    New Bern
    Wilmington
    30 °
    Asheville
    66.6°
    Cape Hatteras
    59.1°
    Asheville
    4.33"
    Asheville
    0.86"
    Wilmington
    South Carolina
    91
    Charleston
    32°
    Florence
    68.8°
    Charleston
    63.5°
    Greenville-Spartanburg
    3.40"
    Florence
    0.70"
    North Myrtle Beach


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


    TEMPERATURE / WINDS/ ELEMENTS

    VIRGINIA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
    
         STN  A      B    C     C1     D    E  F    G    H  I  J K K1  L  M      N   N1   N2   O P Q R R1 S    CWA
         --------------------------------------------------------------------------------------------------------
         BCB 68.2  42.8  55.5   +5.5  82 24,25 30  3,6   0  0  3 0 71% 33 320   2   6.7      10 0 0 0  2 2400 AKQ
         BRI 68.83 46.7  57.77  +4.17 86   25  32    6   0  0  1 0 60%                         0 0 0 0  0 0510/1600 LWX
         CEN 69.3  47.7  58.5   +5.8  87   25  32    6   0  0  1 0 53% 46 322   5   3.2  225 4 0 0 0  1 2400 LWX
         CHT 69.8  47.6  58.7   +5.6  87.7 25  31.7  2   0  0  1 0 70% 26 180   4   0.9  180 3 0 0 0  0 2400 LWX
         CHO 72.6  48.2  60.4         88 22,25 32    6   0  0  1 0     49 140  16   6.3       5 0 0 0  3 2400 LWX
         DAN 73.0  47.7  60.3   +3.0  86   24  30  3,6   0  0  2 0 65% 83 090  26   7.7       8 0 0 0  1 2400 RNK
         DCA 68.6  49.0  58.8   +2.7  86   20  36  2,6   0  0  0 0 67% 58 140  16  10.2       7 2 0 0  0 2400 LWX
         IAD 68.7  45.9  57.3   +4.2  86 20,25 30    6   0  0  4 0 67% 43 260  16   9.6       6 0 0 0  2 2400 LWX
         FCH                                                                                              2400 LWX
         GAV 72.7  50.1  61.4         88   24  32    6   0  0  1 0 65% 39 203   5             6 0 0 0  0 2400 AKQ
         HDV 69.1  47.1  58.2   +2.0  87   25  32  2,6   0  0  2 0 69% 27 180  28        180 7 0 0 0  1 2400 LWX
         LYH 71.5  46.8  59.1   +3.8  86   24  30    6   0  0  2 0 62% 47 190  28   7.4       7 0 0 0  1 2400 RNK
         NPN 73.0  51.0  61.9   +3.0  89.2 24  32.0  6   0  0  1 0     44 290 2,4   5.1  225 3 0 0 0  0 2400 AKQ
         FHC 73.68 53.60 63.68  +6.28 89.7 24  39.6  2   0  0  0 0 66% 46 200  46   4.0  202 4 0 0 0  0 2400 AKQ
         NOR 73.2  51.8  62.5   +4.6  89   24  35    6   0  0  0 0                             2 0 0 0  0 2400 AKQ
         ORF 73.6  53.5  63.3   +5.9  89   24  35    2   0  0  0 0 66% 53 220   5  12.0       4 0 0 0  0 2400 AKQ
         POR 74.0  51.8  62.9   +3.5  88.2 4,5 34.6  2   0  0  0 0 75% 48 250   2   5.4  202 3 0 0 0  0 2400 AKQ
         CTR 73.5  48.3  61.0   +3.7  89.3 24  29.3  6   0  0  3 0 69% 29 225   5   1.4  157 2 0 0 0  0 2400 AKQ
         MEC                                                                                              1700 AKQ
         RIC 73.6  49.9  61.8   +4.7  88 24,25 32    6   0  0  1 0 63% 58 240   5  10.4       3 1 0 1  0 2400 AKQ
         ROA 71.9  48.3  60.1   +4.0  88   24  32 6,16   0  0  2 0 59% 54 280   2   8.3       7 0 0 0  0 2400 AKQ
         WAL 67.1  49.2  58.2   +5.0  85   24  35   2,6  0  0  0 0     47 200  16  11.8       0 0 0 0  6 2400 AKQ
         WOO 65.2  47.1  56.1   -3.0  85   26  33    1   0  0  0 0                             8 2 0 0  4 2400 LWX
         WSH 67.9  46.3  57.1   +1.52 85.2 24  32.6  6   0  0  0 0 69% 24 180  15   1.0  225 5 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 72.0  46.2  59.1  +5.0  83    24 30     6  0  0  1 0 64% 49 330  5    8.5      7 0 0 0  3 2400 GSP
         MRH 72.7  58.5  65.6        81 21,27 42     3  0  0  0 0     40 210  5   11.0      7 0 0 0  1 2400 MHX
         CLT 76.6  50.0  63.3  +2.4  86 11,24 31     6  0  0  1 0 62% 66 280  5    8.9      3 1 0 0  1 2400 GSP
         ECG 74.4  54.2  64.3  +4.2  87 20,24 36     6  0  0  0 0 68% 49 190 28   11.4      7 0 0 0  0 2400 AKQ
         FAY 77.3  52.8  65.1        87 20,24 34     3  0  0  0 0 62% 52 260  5    9.3      6 0 0 0  2 2400 RAH
         GSO 73.5  49.5  61.5  +3.9  85    24 32   3,6  0  0  3 0 60% 59 260  5   10.4      6 0 0 0  2 2400 RAH
         HSE 72.9  60.3  66.6  +6.8  81    25 48     5  0  0  0 0 70% 46 220 16   10.5      1 0 0 0  0 2400 MHX
         HKY 73.6  49.7  61.7  +3.4  83 11,24 35     1  0  0  0 0     46 250  4    6.7      4 0 0 0  1 2400 GSP
         LBT 77.3  51.1  64.2  +3.7  87 20,24 33   3,6  0  0  0 0 69% 48 150 16    6.6      0 0 0 0  3 2400 ILM
         MON                                                                                            2400 RAH
         EWN 76.6  52.7  64.7  +3.6  90    20 34     6  0  0  1 0 69% 55 180 16    8.5      3 0 0 0  0 2400 MHX
         RDU 75.3  51.8  63.6  +4.5  87 24,27 33     3  0  0  0 0 61% 51 260  5    8.7      7 0 0 0  1 2400 RAH
         RAL 75.0  51.1  63.1  +4.0  87    24 31     3  0  0  1 0     32      28             2 0 0 0  0 2400(T)/1930(P) RAH
         ROX 73.8  50.5  62.3  +5.8  86.0  24 34     6  0  0  0 0 66% 38 270  4             5 0 0 0  0 2200 RAH
         WHI 77.4  53.0  65.2  +3.2  85.8  24 33.6   3  0  0  0 0 71% 43 217 28    3.3 183 3 1 0 0  1 2400 ILM
         ILM 76.3  54.3  65.3  +2.6  90    20 35     3  0  0  1 0 69% 46 260  5    9.4      3 0 0 0  2 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 77.1  51.0  64.1  +3.5  87     9 33     6  0  0  0 0     64 280  4   7.9       6 0 0 0  1 2400 GSP
         CAE 80.9  54.6  67.8  +4.5  90  9,19 35     6  0  0  2 0 61% 75 270  5   7.8       5 1 0 0  1 2400 CAE
         CRE 72.8  55.5  64.2  +2.2  85    21 36     3  0  0  0 0 77% 47 200 16   8.9       4 0 0 0  8 2400 ILM
         CHS 80.5  57.0  68.8  +4.6  91    21 39     6  0  0  3 0     46 210 16   9.3       4 1 0 0  1 2400 CHS
         FLO 78.4  52.9  65.7  +2.6  87 24,27 32     6  0  0  1 0 68% 41 250  5   8.1       4 1 0 0  5 2400 ILM
         GSP 76.6  50.4  63.5  +4.5  86     9 34     6  0  0  0 0 61% 52 200  4   8.6       5 1 0 0  4 2400 GSP
         OGB 80.5  54.0  67.2        90     9 37     6  0  0  1 0     55 230  5   6.6       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 73.3  45.7  59.5  +4.9   85 24,25 29    6  0  0  2 0     63 290  27  6.2       5 1 0 0  3   2400 MRX
         DAV             47.0  +1     80    26 29    2  0  0 13 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  5.19  +1.36  0.89 12  0.89    12 12 0 13.37    T  5   1 0    T  8.2                             2400
         BRI  7.56  +4.17  2.24 16  2.26 17-18 10 3 14.56                2.0 11.3  30.30  22 29.56   1        0510/1600
         CEN  4.18  +0.74  1.17 16  1.17    16 12 1 13.95                0.0 13.8  30.41  22 29.27   5 29.84  2400
         CHT  5.37  +2.16  1.37 16  1.37    16 14 2 15.03                0.0 14.5  30.423 22 29.222  5 29.924 2400
         CHO  5.24         1.79 16  1.79    16 12 2 14.06                                    29.25   5        2400
         DAN  3.19  -0.64  1.20 16  1.20    16 10 1 10.63                0.0 11.0  30.33  22 29.32   5        2400
         DCA  3.20  +0.43  0.74 20  0.74    20 14 0 10.97                0.0 10.1            29.25   5        2400
         IAD  5.21  +1.99  1.33 27  1.65 27-28 13 2 14.36                    12.6            29.25   5        2400
         FCH                                                                                                  2400
         GAV  2.41         1.08 16  1.08    16 13 1 10.40    T  2   1 0    T  9.4  30.37  22 29.29   5 29.93  2400
         HDV  4.33  +0.75  1.10 16             15 1 14.43                0.0 14.5  30.41  22 29.20   5        2400
         LYH  5.36  +1.90  1.75 28  2.06 27-28 11 1 11.47                     8.4  30.36  22 29.31   5        2400
         NPN  1.60  -2.14  0.80 16  0.80    16  9 0  9.88                0.0 16.7  30.40  22 29.38   5        2400
         FHC  1.85  -1.53  0.73 26  0.73    26 11 0 13.89                0.0 18.0  30.389 22 29.407  5 29.976 2400
         NOR  1.35  -2.49  0.58 16  0.58    16 12 0 10.66                0.0 21.0                             2400
         ORF  1.21  -2.17  0.61 16  0.61    16  8 0 10.05                0.0 21.8  30.39  22 29.37   5        2400
         POR  2.25  -1.13  0.62 26  0.62    26 10 0 12.50                0.0 19.0  30.39  22 29.42   5 29.975 2400
         CTR  3.06  -0.90  1.16 16  1.16    16 11 1 11.64                0.0 12.1  30.36  22 29.31   5 29.925 2400
         MEC                                                                                                  2400
         RIC  2.63  -0.55  0.90 16  0.90    16 10 0 11.48                0.0 10.8  30.41  22 29.34   5        2400
         ROA  5.33  +1.72  1.95 16  1.95    16 12 1 12.58                0.0 10.4  30.34  22 29.31   5        2400
         WAL  1.60  -1.18  0.62  8  0.62     8  8 0  9.02                0.0 17.0  30.44  22 29.35   4        2400
         WOO  7.67  +4.37           2.16 16-17 19 2 15.07  0.1  1   1 0  0.1 12.8  30.74   4 29.54   1        0800
         WSH  9.36  +5.50  4.07 16  4.07    16 1  3 19.35    T             T 14.7  30.68   4 29.43  23        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  4.33  +0.83  1.10 16  1.86 15-16 14 1 16.37                 0.0 20.8  30.25  22 29.41   5         2400
         MRH  1.83         0.73 26  0.85 26-27 10 0 13.58                 0.0    T  30.30  22 29.52   1         2400
         CLT  3.32  +0.37  1.22 16  1.22    16  7 2 12.64                 0.0  8.9  30.32  22 29.38   5         2400
         ECG  2.02  -0.98  0.63  5  0.63     5  9 0 11.87                 0.0       30.38  22 29.45   5         2400
         FAY  3.27         1.45  5  1.45     5 10 1 10.53                                     29.35   5         2400
         GSO  3.17  -0.26  1.41 16  1.41    16  9 1 11.02                 0.0  9.9            29.35   5         2400
         HSE  1.85  -1.44  0.78 26  0.81 26-27  9 0 16.41                 0.0  6.0  30.33  22 29.46   1         2400
         HKY  2.88  -0.82  0.92 16  1.01 15-16 12 0 12.56                 0.0    T  30.29  22 29.34   5         2400
         LBT  1.95  -0.88  0.49 26  0.59 26-27  8 0 10.48                           30.27   6 29.46  16         2400
         MON                                                                                                    2400
         EWN  1.56  -1.84  0.42  9  0.44 26-27 10 0 10.05                 0.0  4.4  30.32  22 29.52   5         2400
         RDU  2.66  -0.14  1.04  9  1.09   8-9  9 1  9.82                 0.0  9.0            29.35   5         2400
         RAL  2.16  -0.64           0.54   4-5  4 1 10.10                 0.0  9.1  30.19  25 29.58   1         0730
         ROX  2.99  +0.06  0.86 16  0.86    16 10 0 11.77                 0.0 11.7  30.39   5 29.36   5  30.03  2200
         WHI  4.24  -1.28  1.79 28  1.79    28  8 1 14.81                 0.0  9.2  30.276  6 29.493  5  30.007 2400
         ILM  0.86  -2.08  0.33  5  0.33     5  7 0 10.91                 0.0  4.0  30.27  22 29.57   5         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  2.30  -1.05 0.53  5  0.95   4-5  9 0 13.55               0.0    T  30.25   6 29.48   5         2400
         CAE  2.76  -0.22 1.33 22  1.33    22  6 1 12.95               0.0  4.8  30.28   6 29.51   5         2400
         CRE  0.70  -1.42 0.63  9  0.64  9-10  3 0 10.01                         30.28   6 29.56   5         2400
         CHS  2.00  -0.77 1.39 22  1.64 21-22  6 1  9.78               0.0  0.2  30.29   6 29.63   1         2400
         FLO  3.40  +0.61 1.00 28  1.00    28  7 1 12.27                         30.28   6 29.46   5         2400
         GSP  3.24  -0.30 1.53 16  1.80 15-16 11 1 16.33               0.0  8.6  30.26  22 29.43   5         2400
         OGB  2.89        0.95 22  0.95    22  7 0 13.08                         30.30   6 29.54   5         2400
    NEARBY STATIONS
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  T      T1     U  U1   V      V1  W X   Y      Z  1  2  3   4      5     6   6A   7    7A 8      S
         --------------------------------------------------------------------------------------------------------
         TRI  4.57  +1.34 1.44  4 1.74   4-5 16 1 17.35     T 27  1  0     T  15.6  30.24 21 29.33   5        2400
         DAV 10.99  +6.7  1.68 20            19 5 28.01  10.8  3  7  4  23.0 214.6                            0700    

    Virginia:

    Arlington - " FOR WASHINGTON DC...APRIL TEMPERATURES AVERAGED ABOVE NORMAL. MAX TEMPERATURES IN THE 80S OCCURRED SEVEN TIMES...WHICH IS THE MOST IN APRIL SINCE 2002. HOWEVER TEMPERATURES FAILED TO REACH 90 DEG F THIS MONTH FOR THE FIRST APRIL SINCE 2008. THE MONTHLY MIN TEMPERATURE AVERAGE OF 49.0 DEG F WAS THE 12TH WARMEST ON RECORD IN THE 140-YEAR PERIOD BACK TO 1872. TEMPERATURES FAILED TO REACH FREEZING THIS MONTH...EXTENDING THE STREAK OF APRIL MONTHS NOT REACHING FREEZING TO 4 YEARS. THE LAST TIME TEMPERATURES REACHED FREEZING IN APRIL IN WASHINGTON WAS APRIL 9TH 2007. TWO DAILY TEMPERATURE RECORDS WERE BROKEN OR TIED THIS MONTH. THE DAILY HIGH OF 85 DEG F ON THE 4TH TIED THE RECORD FOR THAT DATE SET IN 1956. A LOW OF 66 DEG F ON THE 27TH BROKE THE PREVIOUS RECORD HIGH MIN TEMPERATURE OF 65 DEG F SET IN 1908..1990..AND 1994. PRECIPITATION THIS APRIL WAS SLIGHTLY ABOVE NORMAL. THIS MONTHS FOURTEEN DAYS OF MEASURABLE PRECIPITATION HAS ONLY BEEN MATCHED OR EXCEEDED IN TWO OTHER APRILS SINCE 1984...2008 AND 2011. WIND GUSTS OF 55 MPH ON THE 5TH AND 58 MPH ON THE 16TH RESULTED WHEN STRONG THUNDERSTORMS PASSED ACROSS THE AIRPORT. " - [ + + ] - Notes from NWS Sterling, VA

    Bridgewater - " The 7.56 inches of precipitation was a record for at least 46 years which is the extent of my records. There were three tornados in Rockingham County with no deaths but quite a bit of property damage. There were more tornadoes in the Shenandoah Valley with one fatality. There was a lot of flooding. Two people drowned. I have been in the valley for around 62 years, and I have never heard of this much tornado activity here. " - [ + + ] - additional notes from Clayton

    Chantilly - Russ send these notes: " The fourth warmest April on record. Temperatures averaged 5.6 above normal. Overnight lows only fell below 40 five times. Very unusual for April- A new record high temp was set on the 4th (84.7) and 24th (87.2). A record high low temp was set on the 11th (59.2), 26th (67.8) and 27th (69.0). Precipitation was 2.16" above normal. Thunder was observed on the 3rd. Thunderstorms rumbled through on the 16th, 27th and 28th. *Please note, anemometer is currently partially obstructed from the North and East " - [ + + ]

    Dulles - from NWS Sterling (KLWX): " FOR DULLES...APRIL TEMPERATURES AVERAGED WELL ABOVE NORMAL. THE MONTHLY AVERAGE TEMPERATURE OF 57.3 DEG F WAS THE FOURTH WARMEST SINCE TEMPERATURE RECORDS BEGAN IN 1962. THE TEMPERATURE FAILED TO REACH 90 DEG F THIS MONTH...THE FIRST APRIL SINCE 2008. AFTER A COLD START TO APRIL THAT FEATURED MIN TEMPERATURES BELOW FREEZING ON FOUR OUT OF THE FIRST SIX DAYS...THE MIN TEMPERATURE ONLY DROPPED BELOW 40 DEG F ONCE THROUGH THE REST OF THE MONTH. THE MONTHLY MIN TEMPERATURE AVERAGE OF 45.9 DEG F WAS TIED WITH 2010 FOR THE SECOND WARMEST ON RECORD. THE WARMEST MONTHLY MIN TEMPERATURE AVERAGED 46.4F IN 1994. TWO DAILY MAX TEMPERATURE RECORDS WERE BROKEN OR TIED THIS MONTH. A MAX TEMPERATURE OF 85 DEG F ON THE 4 APR BROKE THE PREVIOUS RECORD MAX TEMPERATURE OF 81 SET IN 1999 WHILE THE 85 DEG F ON THE 24 APR TIED THE RECORD MAX TEMPERATURE ORIGINALLY SET IN 1990 AND 1994. THREE DAILY HIGH MIN TEMPERATURE RECORDS WERE BROKEN OR TIED THIS MONTH. A MIN TEMPERATURE OF 59 DEG F ON THE 11 APR BROKE THE PREVIOUS RECORD HIGH MIN TEMPERATURE OF 57 DEG F SET IN 2008 WHILE THE 67 DEG F ON THE 26 APR BROKE THE PREVIOUS RECORD HIGH MIN TEMPERATURE OF 61 DEG F SET IN 1979. ON THE FOLLOWING DAY...THE MIN TEMPERATURE OF 68 DEG F BROKE THE PREVIOUS RECORD HIGH MIN TEMPERATURE OF 63 DEG F SET IN 2009. PRECIPITATION THIS APRIL WAS WELL ABOVE NORMAL AND WAS THE FIFTH WETTEST APRIL ON RECORD. EIGHT DAYS THIS APRIL FEATURED RAINFALL OF A QUARTER OR MORE INCHES...WHICH IS TIED WITH 1964 AND 1983 AS THE MOST NUMBER OF DAYS WITH AT LEAST A QUARTER INCH OF RAIN DURING APRIL. " - [ + + ]

    Glen Allen - Lowell Koontz reports: " April was much warmer than average as the monthly mean temperature was 61.4F, a +4.8F mean temperature departure, and was drier than average when compared to Ashland, Virginia records. This was only 0.1F cooler than the warm April of last year. The 2.41 inches of rain for April was a -0.66 inch departure when compared to the Ashland, VA average and 10.40 inches for the year. Last year at this time we had 15.74 inches of rain for the year. The maximum rainfall recorded in a day was 1.08 inches on the 16th. Measurable precipitation occurred on 13 days and nine of these days had less than 0.07 inches. April was a very windy month with a total wind run for the month of 2,773.2 miles the windiest on record for April. The windiest day was the 4th with a wind run of 226.1 miles a new daily record for this station. The maximum temperature for April was 88F on the 24th and there were five days that the temperature was 85F or higher. The Richmond International Airport had 87F the highest maximum temperature for the date on the 4th; the previous record was 86F in 1956. The Airport tied the highest minimum temperature for the date with a temperature of 67F on the 26th. The Airport also set a new record high minimum on the 27th of 67F; the previous record was 66F in 1915 and 1908. The lowest minimum was 32F recorded on the 6th and there were two days with light scattered frost. The maximum wind gust was 39 mph from SSW that occurred on the 5th at 0023. The highest barometer recorded for the month was 30.37 inches on the 22nd. The lowest barometric pressure was 29.29 inches on the 5th, the lowest since December 13th when it was 29.25 inches. " - [ + - ] 

    Herndon - Randy reports: " April was above normal for temperature and precipitation. The temperatures ranged between a high of 87 and a low of 32. The average highs/lows were 1.6 and 2.6 degrees above normal, respectively. On the precipitation side, the month was 0.75 above normal with 4.33 measured. Rain fell off and on for most of the month, with thunderstorms occurring on seven days. The heaviest rain (1.10) came on the 16th. There were lots of severe thunderstorms and some sighted tornados near by, but they stayed either west or south of my location. We had no snow in April and ended the season with 14.5 of snow. " - [ + + ]

    Portsmouth - " April's average temperature (62.9) was 3.5 ABOVE NORMAL. Rainfall was BELOW NORMAL by 1.13" and was 67% of normal relative to normal Aprils for the period from 1977 to 2010. No frost was recorded during the month. STATION RECORDS: 1st - TEMP TIED Min Max 50 [previous 1980]; 2nd - TEMP TIED Minimum 35 [prev 1980]; 2nd - WIND GUST 48mph [prev 35mph 1997]; 4th - TEMP TIED Maximum [prev 85 1999]; 5th - WIND GUST 38mph [prev 34mph 1984]; 24th - TEMP Maximum 88 [prev 87 1990]; 25th - TEMP TIED Max Min 65 [prev 1985]; 26th - TEMP Max Min 66 [prev 64 2009]; 27th - TEMP Max Min 67 [prev 65 1990]; 28th - TEMP Max Min 68 [prev 65 1985]; 28th - WIND GUST 36mph [prev 33 1989]. " - [ + - ] 

    Woodstock - Bob sends this additional note: " Wettest April in 26 years of record keeping! " - [ - + ]

    North Carolina:

    Greensboro - NWS RAH notes: " HE LOW TEMPERATURE AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT ON APRIL 11TH WAS 59 DEGREES. THIS BREAKS THE OLD RECORD HIGH MINIMUM OF 58 SET IN 1981. THE LOW TEMPERATURE AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT ON ARPIL 25TH WAS 64 DEGREES. THIS BREAKS THE OLD RECORD HIGH MINIMUM OF 63 SET IN 1976. THE LOW TEMPERATURE AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT ON APRIL 27TH WAS 67 DEGREES. THIS BREAKS THE OLD RECORD HIGH MINIMUM OF 65 SET IN 2007. THE LOW TEMPERATURE AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT ON APRIL 28TH WAS 68 DEGREES. THIS BREAKS THE OLD RECORD HIGH MINIMUM OF 62 SET IN 2007. " - [ + - ] 

    Moncure - Mac reports: " " - [ ]

    Raleigh - NWS RAH notes: " THE DAILY RAINFALL AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 10TH WAS 1.04 INCHES. THIS BREAKS THE OLD RECORD OF 0.91 INCHES SET IN 1998. THE LOW TEMPERATURE AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 11TH WAS 60 DEGREES. THIS BREASKS THE OLD RECORD HIGH MIN OF 58 SET IN 2011. THE LOW TEMPERATURE AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 24TH WAS 62 DEGREES. THIS TIES THE OLD RECORD HIGH MIN SET IN 1970. THE LOW TEMPERATURE AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 25TH WAS 66 DEGREES. THIS TIES THE OLD RECORD HIGH MIN SET IN 1976 AND 2009. THE LOW TEMPERATURE AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 26TH WAS 68 DEGREES. THIS BREAKS THE OLD RECORD HIGH MIN OF 65 SET IN 2007. THE LOW TEMPERATURE AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT ON APRIL 27TH WAS 68 DEGREES. THIS BREAKS THE OLD RECORD HIGH MIN OF 63 SET IN 1954, 2007 AND 2008. " - [ + - ]

    Raleigh - Bob adds: " THE AVERAGE DAILY TEMPERATURE WAS +4.0 DEGREES ABOVE NORMAL. DRY CONDITIONS CONTINUED WITH RAINFALL -0.64" BELOW NORMAL AND YTD DEPARTURE -4.22" BELOW NORMAL. MAJOR TORNADO OUTBREAK OCCURRED DURING THE AFTERNOON OF THE 16TH OVER CENTRAL AND EASTERN NC. THE NWS HAS CONFIRMED 30 TORNADOS INCLUDING SEVERAL EF3 LEVEL STORMS. " - [ + - ]

    North Whiteville - Christopher reports: " Of course, the highlight (or lowlight, if you want) this month would be the tornado outbreak of April 16, followed by another tornado outbreak on April 28. Columbus County, N.C., had FOUR separate tornado warnings for April 16, and TWO separate tornado warnings on April 28. There were FOUR separate severe thunderstorm warnings posted on April 16, and two on April 28. In total, out of 30 days, precipitation was measured on 8 days, or 26.7% of total days. " - [ + + ]

    Nearby Cities:

    Tri-Cities, TN - from NWS Morristown, TN: " Tri-Cities received 4.57 inches of rain in April, which was 1.34 inches above normal. It ranked as the 14th wettest April on record. Measurable rain occurred on 16 days and six of those days had more than one-quarter of an inch of precipitation. The heaviest rain fell on the 6th when 1.44 inches of rain was reported. The wettest April of the 73 years of observations taken at Tri-Cities was in 1998 when 7.03 inches of rain was recorded. The monthly-average temperature at Tri-Cities in April was 59.5 degrees which was 4.9 degrees above normal. It tied with 1955 as the 7th warmest April on record. The warmest April at Tri-Cities was back in 1954 when the average temperature was 61.8 degrees. " - [ +  + ]

    Davis, WV - from Dave Lesher's website: " April 2011 had a mean temperature of 47 and that was 1 ABOVE NORMAL. The month's rainfall total of 11.0 inches was 6.7" ABOVE NORMAL. Rainfall for the year of 28.0" was 10.1" ABOVE NORMAL. The 23" of snow was 13" inches ABOVE NORMAL snowfall for the month. The season-to-date snowfall of 215" was 72" 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 ACON VA/NC/SC Recent Weather News, Search GOOGLE at CNN
    http://www.cnn.com/WEATHER
     

    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 david82@verizon.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