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

SUMMARY OF CLIMATOLOGICAL DATA 


APRIL 2007


... QUITE A FEW VARIATIONS IN TEMPERATURE AND PRECIPITATION ...
... NORTH CAROLINA EXPERIENCES STRONG WINDS MID-MONTH &
AN UNUSUALLY HIGH NUMBER OF DAMAGING, LATE WINTER HARD FREEZES...

A generally colder than normal April was noted across the region. In Virginia, temperatures were below normal for all but the Norfolk area and the extreme NNW hills and mountains of Virginia.

A closer look at your temperature averages and rainfall totals clearly show that April was a month of considerable variation for precipitation in Virginia and North Carolina. However, note that in South Carolina rainfall for most stations was well-below normal.

  • DAVIS, TUCKER COUNTY, WEST VIRGINIA WEB DATA    Member Dave Lesher posts his station's weather here. http://canaanweather.4t.com:80/


  • A HISTORY OF OBSERVING THE WEATHER    Weather observations, including temperature, moisture, pressure, and wind speed and direction, are the basis for the weather forecasts we rely on every day. NOAA's National Weather Service has been observing the weather since the 19th century and continues to serve as the primary source of weather data, forecasts, and warnings for the United States. For more, visit http://celebrating200years.noaa.gov/foundations/weather_obs/welcome.html#earlyyear.


  • CERTIFICATE OF ACHIEVEMENT IN WEATHER FORECASTING    Whether you are an amateur weather enthusiast or a weather-related industry professional, enrolling in this online certificate program is a perfect way to enhance your career or degree. Through the online meteorology courses that compose this 12-credit certificate program of study, you can build a foundational understanding of contemporary forecasting techniques. For more details, visit http://www.worldcampus.psu.edu/WeatherForecastingCertificate_WeatherForecasting.shtml.
  • DROUGHT MONITOR    http://www.drought.unl.edu/dm/monitor.html
  • 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 2007
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    90°
    Mechanicsville
    Richmond
    21°
    Blacksburg
    59.0°
    Norfolk (FHC)
    50.6 °
    Blacksburg
    5.94"
    Wakefield
    2.22"
    Charlottesville
    North Carolina
    89°
    Fayetteville
    20°
    Asheville
    61.8°
    Fayetteville
    Wilmington
    53.1°
    Asheville
    4.97"
    Greensboro
    0.66"
    Beaufort
    South Carolina
    89
    Columbia
    24°
    Greenville-Spartanburg
    64.1°
    Charleston
    59.2°
    Anderson
    4.91"
    Orangeburg
    0.88"
    Charleston




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


    TEMPERATURE / WINDS/ ELEMENTS

    VIRGINIA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
    
         STN  A      B    C     C1     D    E  F    G    H  I  J K K1  L  M      N   N1   N2   O P Q R R1 R2   S   CWA
         ------------------------------------------------------------------------------------------------------------
         ANN 63.03 43.87 53.45  -2.1  86   23  26   8    0  0  5 0 61% 53 WNW   16             2 0 0 0  0     2400 LWX
         BCB 62.5  38.6  50.6   +0.6  83   25  21   7    0  0  7 0 63% 54 320  16   7.9       2 0 0 0  5     2400 RNK
         BRI 62.3  42.5  52.4   +0.5  84   30  26   9    0  0  4 0 47%                         0 0 0 0  0     0510 LWX
         CEN 63.2  43.3  53.3   +0.6  86   23  27   8    0  0  6 0 59% 56 289  16   8.6  N    0 0 0 6  1     2400 LWX
         CHT 61.6  41.6  51.7   -1.4  85.2 23  26.9 8    0  0  6 0 60% 23 NW    17   1.0  N    0 0 0 0  0     2400 LWX
         CHO 64.7  42.3  53.5   -3.6  88   30  25  10    0  0  5 0 59% 45 360  16   5.1       1 0 0 0  2     2400 LWX
         DAN 69.1  43.6  56.3   -1.0  86   30  22   8    0  0  5 0 58% 49 300  16   7.7       3 0 0 0  1     2400 RNK
         DCA 62.6  44.6  53.6   -2.5  86   30  29   8    0  0  3 0 59% 52 330  16   9.5       3 0 0 0  0     2400 LWX
         IAD 62.7  41.7  52.2   -0.9  86 23,30 27   8    0  0  6 0 59% 56 300  16   8.6       3 0 0 0  0     2400 LWX
         FCH                                                                     5                            2400 LWX
         HER                                                                                   1 0 0 0        2400 LWX
         HDV 62.8  42.4  52.6   -3.4  86   23  26   8    0  0  6 0                             0 2 0 0        2400 LWX
         LDY 65.8  43.5  54.7   -2.8  88   30  24   9    0  0  5 0 49%                         2 0 0 0  0     2400 AKQ
         LYH 65.4  42.1  53.7   -1.6  87   30  22   8    0  0  5 0 57% 47 340  16   6.8       1 0 0 0  1     2400 RNK
         NEW 64.56 42.00 53.28  -4    82   16  24   1    0  0  9 0 64% 40 N     17             1 0 0 0  1     1700 LWX
         NPN 68.9  45.5  57.2         89   25  29   9    0  0  5 0     45 NW    16             4 0 0 0  1     2400 AKQ
         NOR 68.1  46.4  57.3   -0.2  88   25  31 8,10   0  0  3 0                             1 0 0 0  0     2400 AKQ
         ORF 66.9  48.2  57.5   +0.1  87   25  33  7,8   0  0  0 0 62% 44 360  17   8.6       1 0 0 0  2     2400 AKQ
         FHC 68.78 49.22 59.00  +1.6  88.8 25  32.2 8    0  0  1 0 63% 37 301  16   4.0  203                2400 AKQ
         POR 68.9  47.8  58.3   -0.8  87   25  29   8    0  0  1 0 64% 48 270  16   5.1  293 2 0 0 0  0   % 2400 AKQ
         CTR 70.0  44.0  57.0   -0.1  89.3 25  25.8 7    0  0  5 0 61% 24 NW    16   1.1  270 2 0 0 0  0 25% 2400 AKQ
         MEC 71.7  44.5  58.36        90   30  26   9    0  0  4 0     15 S     16             1 0 0 0  0     1700 AKQ
         RIC 69.0  45.2  57.1    0.0  90   25  28   9    1  0  5 0 57% 51 310  16   8.4       1 0 0 0  0     2400 AKQ
         ROA 66.5  45.4  55.9   -0.2  88 25,30 28 7,8    0  0  4 0 51% 54 280  16   9.4       1 0 0 0  1     2400 AKQ
         AKQ 70    43    56.5         89   25  23   8    0  0  6 0                                            2400 AKQ
         WAL 61.3  43.2  52.2   -1.0  84   30  28  10    0  0  5 0     53 290  16  10.1       2 0 0 0  4     2400 AKQ
         WOO 59.8  44.5  52.2   -2.8  82   24  25   8    0  0  6 0                             2 0 0 0  3     2400 LWX
         WSH 63.1  43.2  53.1   -2.31 87.3 30 26.3  8    0  0  5 0 58% 39 NE    16   2.2  NNE  1 0 0 0  0     2400 LWX
    NORTH CAROLINA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
        
         STN  A      B    C     C1    D    E  F      G  H  I  J K K1  L  M     N    N1   N2  O P Q R R1 R2  S    CWA
         -----------------------------------------------------------------------------------------------------------
         AVL 65.4  40.8  53.1  -1.0  83    30 20     7  0  0  5 0 57% 66 330 15    9.1      2 0 0 0  5     2400 GSP
         MRH 68.3  50.4  59.3        81     3 33  8,10  0  0  0 0     53 280 15   10.9      3 0 0 0  0     2400 MHX
         CLT 71.5  45.6  58.6  -2.3  84 26,30 21     8  0  0  4 0 55% 39 310 16    6.4      5 0 0 0  1     2400 GSP
         ECG 69.5  46.8  58.1  -2.0  87    25 27     8  0  0  5 0 61% 49 300 16   10.0      0 0 0 0  0     2400 AKQ
         FAY 74.2  49.4  61.8        89    30 27     8  0  0  2 0 53% 49 260  3    9.8      4 0 0 0  2     2400 RAH
                                                                      49 200 15
         GSO 70.0  46.8  58.4  +0.8  86    30 25     8  0  0  3 0 53% 62 280 16    9.3      3 0 0 0  0     2400 RAH
         HSE 65.3  51.5  58.4  -1.4  79    30 36     9  0  0  0 0     58 240 15   10.3      0 0 0 0  3     2400 MHX
         HKY 70.0  46.3  58.1  -0.2  86    30 25     8  0  0  4 0     51 330 16    6.9      2 0 0 0  2     2400 GSP
         LBT 73.6  46.0  59.8  -0.7  86 25,26 22     8  0  0  4 0     45 230 15    7.8      4 0 0 0  2     2400 ILM
         EWN 72.3  47.7  60.0  -1.1  87    25 29    10  0  0  4 0     69 270 16    7.9      4 0 0 0  3     2400 MHX
         RAL 72.0  45.3  58.7  -0.4  86    30 23     8  0  0  5 0     36      16             2 0 0 0  0     2400 RAH
         RDU 72.3  47.6  59.9  +0.8  87 25,30 27     8  0  0  5 0 55% 48 290 16    6.9      4 0 0 0  0     2400 RAH
         ROX 69.7  46.3  58.2  +0.9  86 25,30 25     8  0  0  5 0 59% 41 NW   16         N   1 0 0 1  1 35% 2400 RAH
         ILM 74.0  49.7  61.8  -0.9  88    30 29     8  0  0  3 0 56% 54 310 15    9.5      2 0 0 0  2 15% 2400 ILM
    SOUTH CAROLINA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  A      B    C     C1    D    E  F      G  H  I  J K K1  L  M     N   N1   N2   O P Q R R1 R2  S    CWA
         -----------------------------------------------------------------------------------------------------------
         AND 72.5  46.0  59.2  -1.3  85    30 25     8  0  0  4 0     46 280 15   7.3       3 0 0 0  3     2400 GSP
         CAE 75.6  48.2  61.9  -1.3  89 26,30 26     8  0  0  3 0 55% 45 260 15   7.8       4 0 0 0  1     2400 CAE
         CRE 71.6  49.5  60.6  -1.4  8      4 29     8  0  0  1 0     46 210 15   8.7       2 0 0 0  1     2400 ILM
         CHS 76.9  51.4  64.1  -0.1  88    30 30     8  0  0  1 0     53 190 15   9.3       4 0 0 0  0     2400 CHS
         FLO 75.1  48.4  61.8  -1.3  88 26,25 26     8  0  0  3 0     46 260 15   8.0       5 0 0 0  0     2400 ILM
         GSP 72.3  47.5  59.9  +0.9  87    30 24     8  0  0  4 0 52% 47 350 15   7.8       4 0 0 0  1     2400 GSP
         OGB 76.3  48.8  62.5        87 25,30 28     8  0  0  2 0     44 250 15   6.9       2 0 0 0  1     2400 CAE
    NEARBY STATIONS
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
       
         STN  A      B    C     C1    D     E  F     G  H  I  J K K1  L  M     N   N1   N2   O P Q R R1 R2  S    CWA
         -----------------------------------------------------------------------------------------------------------
         TRI 66.3  40.7  53.5  -1.1  83 25,30  21    8  0  0  7 0     45 290  3   6.7       2 0 0 0  0     2400 MRX
         DAV 49.2  32.6  40.9        74     4  11    8  0  6 14 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
         -------------------------------------------------------------------------------------------------------
         ANN  4.74  +1.17 2.42 15 2.57 14-15  9 1 13.26  0.9  7   1 0  0.9 15.3  30.23  21 29.17  15 29.92  2400
                                                                                        22
         BCB  3.63  -0.20 1.32 15 1.32    15 12 1 14.95  0.5  6   5 0  0.9  6.7                             2400
         BRI  3.72  +1.00 1.07 11 1.43 14-15  7 1 10.42  1.0      1 1  1.0 13.0  30.19  21 29.40  16        2400
                                                                                        22
         CEN  3.54  +0.10 2.06 15 2.29 14-15 10 1 11.66  0.2  7   3 0  0.2 18.0  30.25     29.24  21 30.00  2400
                                                                                                  22
         CHT  3.38  +0.16 1.92 15 2.17 14-15  9 1 11.31  0.0           0.0 14.9  30.256 21 29.259 16 29.92  2400
         CHO  2.22  -1.12 0.76 15 0.81 14-15  9 0  7.60                                    29.16  15        2400
         DAN  3.66  -0.17 2.01 15 2.01    15  8 1 13.47  0.0      0 0  0.0  0.8  30.25  23 29.15  15        2400
         DCA  4.17  +1.40 2.41 15 2.55 14-15  9 1 12.04  0.4  7   2 0  0.4  9.5  30.23  22 29.16  15        2400
         IAD  3.38  +0.16 1.93 15 2.18 14-15 10 1 10.96  0.2  7   3 0  0.2 14.7            29.16  15        2400
         FCH              [through March 2007] ->  8.80                    11.0 <- [through March 2007]     2400
         HDV  3.68  +0.24 2.12 15             9 1 11.98  0.4  7   1 0  0.4 14.8                             2400
         HER  3.48  +0.26 2.00 15 2.25 14-15 10 1 11.93  0.25 7   1 0 0.25 15.25                            2400
         LDY  2.92  +0.03 1.78 15 1.87 14-15  6 1 10.40  1.5  7   1 1  1.5  3.8  30.23  22 29.13  15 29.90  2400
         LYH  3.10  -0.36 1.30 15 1.31 14-15  8 2 12.38    T  6   1 0    T  3.2  30.26  21 29.22  15        2400
         NEW  3.11  +0.50 1.38 15             5 2 10.40  0.0             T       30.48  22 29.68  15        1700
         NPN  5.39        2.51 15 2.64 15-16  9 2 11.05  1.8  7   1 1  1.8  1.8  30.18  23 28.94  15        2400
         NOR  3.91  -0.06 1.82 15 1.96 15-16 10 1 11.00  0.1  7   1 0  0.1  0.1                             2400
         ORF  3.19  -0.19 1.70 15 1.81 15-16  9 1  9.83  0.1  7   1 0  0.1  0.1  30.25  23 28.99  15        2400
         FHC  3.21        1.51 15 1.66 15-16 10 1  9.38    T  7   1 0    T    T  30.244 23 28.987 15 29.390 2400
         POR  2.77  -0.73 1.41 15 1.50 15-16 10 1  9.98  0.2  7   1 0  0.2  0.4  30.25  23 29.03  15 30.168 2400
         CTR  3.97  +0.64 2.38 15 2.40 15-16 10 1 13.34  0.0           0.0  2.1  30.23  22 29.11  15 29.913 2400
         MEC  3.50        1.93 15 2.26 15-16  9 1 12.32  1.0  7   1 0  1.0  1.8  29.94  21 29.00  15        1700
                                                                                        22
         RIC  3.62  +0.44 2.23 15 2.24 14-15  7 1 11.80  1.0  7   1 1  1.1  1.3  30.25  22 29.11  15        2400
         ROA  2.60  -1.01 0.87 11 1.17 11-12  8 0 10.56    T  7   1 0    T  3.1  30.29  21 29.29  15        2400
         AKQ  5.94        2.77 15             9 2 12.01  0.4  7   1 0  0.4  0.5                             2400
         WAL  3.90  +1.12 2.44 15 2.49 14-15  8 1 10.42  3.5  7   1 1  3.5  5.1  30.23  22 28.93  15        2400
         WOO  4.05  +0.94         1.38 14-15 13 1 11.39  0.2  7   3 0  0.3 29.7  30.38  21 29.52  16        0800
                                                                                        22
         WSH  2.87  -0.98 1.16 15 1.45 15-16 11 1 12.18  1.2  7   2 1  1.8 19.4  30.28  21 29.29  16        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  1.77  -1.73 0.59 15 0.83 14-15  9 0 10.86   1.3   7 3 1  1.3  3.2            29.30  15         2400
         MRH  0.66        0.44 12 0.44    12  3 0  8.52   0.0          0.0  0.0  30.34  23 29.11  15         2400
         CLT  4.12  +1.17 1.40 14 1.89 14-15  7 1 10.27   0.0          0.0  1.0            29.25  15         2400
         ECG  2.73  -0.27 2.32 15 2.73 15-16  6 1  7.75     T          0.0  1.0  30.63  21 29.47   2         2400
         FAY  3.85        1.69 15 1.69    15  6 1 10.50                     0.0            29.16  15         2400
         GSO  4.97  +1.54 1.56 15 2.41 14-15  8 2 13.47     T   6 1 0    T  0.8            29.16  15         2400
         HSE  3.35  -0.06 1.70  4 1.70     4  7 2 12.64   0.0          0.0  0.0  30.33  23 29.09  15         2400
         HKY  1.71  -1.99 0.58 14 0.81 14-15  7 0 10.66   0.0          0.0    T            29.25  15         2400
         LBT  3.26  +0.43 1.96 15 1.97 14-15  6 1  7.00                          30.33  23 29.14  15         2400
         EWN  3.95        3.52 15 3.54 15-16  7 1 13.02   0.0          0.0  0.0  30.33  23 29.09  15         2400
         RDU  3.88  +1.08 1.76 15 1.77 14-15 10 1 12.26     T   7 1 0    T  1.6            29.16  15         2400
         RAL  4.06  +1.26         1.76 11-12  7 2 12.71   0.0          0.0  1.4  30.22  22 29.47  15         1900
         ROX  3.48  +0.55 1.58 15 1.58    15  7 2 12.30     T   7 1 0    T  0.5  30.34  23 29.18  15  29.98  2200
         ILM  1.29  -1.65 1.05 15 1.05    15  3 1  9.34   0.0          0.0  0.0  30.34  23 29.13  15         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  1.71  -1.64 0.65 15 1.12 14-15  8 0 12.53  0.0          0.0    T  30.32  23 29.34  15         2400
         CAE  1.39  -1.59 0.67 15 0.68 14-15  6 0 10.52  0.0          0.0  0.2  30.33  23 29.30  15         2400
         CRE  1.23  -0.89 0.92 15 0.93 15-16  2 0  8.07                         30.35  23 29.18  15         2400
         CHS  0.88  -1.89 0.28 11 0.40 19-20  6 0  7.97  0.0          0.0    T  30.34  23 29.31  15         2400
         FLO  3.88  +1.09 1.71 15 1.75 14-15  6 2  8.61                         30.32  23 29.18  15         2400
         GSP  1.82  -1.72 0.55 15 0.84 14-15  7 0 12.61   T 65,7 2 0    T  1.5            29.25  15         2400
         OGB  4.91        3.02 15 3.02    15  6 2 13.69                         30.34  23 29.33  15         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  2.64  -0.59 0.55 15 0.92 14-15 11 0  7.53   0.4  7  3  0   0.6   4.1 30.30 22 29.38  15        2400
         DAV  7.22        1.98 15            20 2 26.93   9.5 17 13  5  27.8 193.6                           0700    

    Virginia:

    Annandale - Lowell sends these additional notes: " April was -2.1F cooler than average and +1.17 inches above average in precipitation or the fifth wettest April in the past 27 years. April's mean monthly temperature was 53.45F and tied for the sixth coolest in the last 27 years and the coolest April since 1997. April started out as one of the coolest on record but the warm temperatures in the last part of April offset the cold start. The lowest April minimum temperature was 26F which was the lowest since 1985 when the April record was set at 22F. The daily mean temperature on the 8th tied for the 2nd coldest April day in the past 27 years and the lowest mean for April since 1985. There were five days the minimum temperature was 32F or less in April, the most since 7 days were recorded in 1982 which is the current record. April had 9 days with measurable precipitation but 2.42 inches or 51% of the month's rainfall fell on the 15th which was the second most rainfall on an April day since April 15, 1983 when the 27 year April record of 2.57 inches occurred. The 2.57 inches in 24 hours on the 15th and 16th was a new record for April. (Records since June 1996) The snowfall total on the 7th was 0.9 inches and was the second largest April snowfall in the past 27 years. The last measurable snow to occur in April was 1.0 inch on April 9, 2000. The maximum wind gust of 53 mph from the west recorded on the 16th at 1500 was the highest wind recorded in April since 1982 and was the second highest for April and tied for fourth place for the highest wind gust recorded here in the past 27 years. April's wind run was 1875.7 miles. (Records since 2003) The wind run for the 16th was 238.5 miles which is now the new daily record for all months. (Records since May 2002) The lowest barometric reading was 29.17 inches on the 15th at 2:29 hours and was the lowest barometric pressure here since March 8, 2005 when 29.16 inches was recorded. It was also the cloudiest April since 2000. The lowest relative humidity for April was 17% on the 21st and 22nd; the 27 year record is 11%. April DAILY Records Tied or Broken- (27-Years of records): HIGH maximum temperature: 30; LOW maximum temperature: 7, 15, 16; HIGH minimum temperature: 24, 25; LOW minimum temperature: 8, 9; LOW range temperature: 15; HIGH snowfall: 7. " [ - + ] 

    Arlington from NWS in Sterling - " WINTER WAS SLOW TO LET GO OF ITS GRIP FOR THE BEGINNING AND MIDDLE PART OF APRIL AT REAGAN NATIONAL. THROUGH THE 19TH...THE AVERAGE TEMPERATURE WAS ONLY 47.9 DEGREES...MAKING IT THE EIGHTH COLDEST ON RECORD DATING BACK TO 1871. THERE WAS ALSO MEASURABLE SNOW ON THE 7TH WHEN FOUR TENTHS OF AN INCH WAS REPORTED. BELIEVE IT OR NOT...THIS DID NOT SET ANY RECORDS FOR THE DATE. SIX TENTHS OF AN INCH WAS REPORTED BACK IN 1972 FOR THE SAME DATE. HOWEVER...ON THE MORNING OF THE EIGHTH...A LOW OF 29 DID TIE THE OLD RECORD SET BACK IN 1929. SPRING FINALLY SPRUNG FOR THE LATTER PART OF THE MONTH. TEMPERATURES FROM THE 20TH THROUGH THE 30TH AVERAGED 63.5 DEGREES...MAKING IT THE 17TH WARMEST ON RECORD FOR THAT PERIOD. [ - + ] 

    Bridgewater - " The temperature was .5 degrees below normal while the precipitation was an inch above normal. There was an inch of snow. This was the first measurable snow in April for quite a few years. Snow fell in most of the state. In fact some places in Eastern Virginia got as much as 4 inches. the total snow for the winter was around 11 inches. There were no major snow storms with the biggest snow around 3 inches. here were a number of mini-snows with an average less than 2 inches. " - [ - + ] - report from Clayton

    Centreville - " Having April Fool's Day and Friday the thirteenth successfully behind us, we have nothing but May flowers to brighten our days ahead. With near normal temperatures and precipitation for April, I'd say that May holds a lot of promise. The average monthly temperature worked out to 0.6 greater than the 52.7 normal average for the month. With a high of 86 on April 23rd and a low of 27 on the 8th, they both had a long way to go to set any April records. The average high and low for the month held respectable positions compared to the published normal averages. For the warm end of the spectrum, the average worked out to 2.0 cooler than the 65.2 average high; the average low came in at 3.1 warmer than the 40.2 shown in the record books. Except for a chilly February, this month shows the least amount of deviation from the norm so far this year. A wind gust of 56 mph out of the WNW was logged at 15:42 on April 12th. With this as one of the highest gusts recorded in recent times, very little damage was reported from around our neighborhood. Other localities didn't fare as well however. Precipitation for April was composed of a dusting of snow accumulating 0.2" and giving us a seasonal total of 18.0"; 6.1" short, or 75% of the 24.1" normal. On the other hand, rainfall amounted to a slight surplus for the month with 3.54" accumulating; 0.10", or 103% of our 3.44" normal. April 14th and 15th were the wettest days of the period when 2.29" tipped our bucket accounting for 66% of our monthly total. While a surplus of a tenth of an inch isn't a lot to take to the bank, it did make a slight dent in our annual deficit that now stands at 2.02". " - [ + + ] - report from Paul

    Chantilly - Russ Topping sends these notes: " In April, temperatures averaged 1.4 degrees below normal. Monthly precipitation was 0.16" below normal. Snowfall was 0.4" below normal and we ended the season below normal at 14.9". No measurable snow fell, this April. The main event in April was the affects of a late season Nor'easter on the 14-16th. Winds at nearby Dulles International Airport were measured gusting to 56 mph as the storm moved up the coast and bombed out. *Please note, anemometer is currently partially obstructed " - [ - + ]

    Herndon - Randy sends these notes: " APRIL BEGAN IN A DAMP AND COOL FASHION WITH MOST OF OUR PRECIPITATION, WITH EVEN A LITTLE SNOW, OCCURING DURING THE FIRST TWO-THIRDS OF THE MONTH. FINALLY THE COOL SPELL ENDED AND WE SAW SOME NEAR AND EVEN SLIGHTLY ABOVE NORMAL TEMPERATURES DURING THE LAST 10 DAYS OF THE MONTH. APRIL ENDED UP 3.4 DEGREES BELOW NORMAL AND WAS THE COLDEST APRIL IN THE LAST 14 YEARS, WHEN I STARTED MY STATION IN HERNDON. PRECIPITATION OCCURRED FREQUENTLY DURING THE MONTH, ALTHOUGH MOST CAME IN SMALL AMOUNTS. THE HEAVIEST PERIOD OCCURRED DURING A FOUR-DAY PERIOD FROM THE 12 THRU 15 WITH 3.15 INCHES FALLING. THE WET PERIOD BEGAN WITH SOME THUNDERSTORM ACTIVITY ON THE 12TH. WE ALSO HAD SOME THUNDERSTORM ACTIVITY ON THE 4TH, ALTHOUGH ONLY LIGHT RAIN OCCURRED WITH IT. WE ENDED THE MONTH WITH 3.68 INCHES OF PRECIPITATION WHICH WAS ABOUT A QUARTER INCH ABOVE NORMAL. THIS BRINGS OUR ANNUAL RAINFALL TO 11.98 INCHES WHICH IS STILL CLOSE TO AN INCH AND HALF BELOW NORMAL. DURING THE COLD START OF THE MONTH, WE ALSO HAD A LIGHT SHOW SHOWER PERIOD ON THE 7TH WITH ABOUT 0.4 INCHES FALLING. THIS BROUGHT OUR YEAR AND SEASON SNOW FALL TOTAL TO 14.8 INCHES. " - [ - + ]

    Ladysmith - Danny sends these additional notes: " April brought much more in the way of wintry weather than March with a surprise 1.5" snowfall accumulation on the 7th. Temperatures finished well below normal for the second time in three months despite a summer like stretch at the end of the month, punctuated by a high of 88 on the 30th. The average barometric pressure was below 30" for the first time in almost a year, with a very low 29.13" reading on the 15th. " - [ - + ]

    Portsmouth - " The temperature averages were below normal for the month; the departure of the average was -0.8. Rainfall for the month was 81% of normal or -0.66". We did have a late season - for us - snowfall of 2/10ths inch on the 7th when shorwers of rain turned to snow with a frontal passage. FROPA: 1st, 3rd, 12th, 15th, 25th. STATION RECORDS: 2nd - TEMP - TIED MAXIMUM 83 [previous 2003] 2nd - TEMP - MAXIMUM MINIMUM 65 [previous 61 1998] 7th - SNOWFALL - 0.2" [no previous measurement] 7th - TEMP - MINIMUM MAXIMUM 44 [previous 47 1989] 8th - TEMP - MINIMUM 29 [previous 32 1990] 9th - TEMP - TIED MINIMUM 35 [previous 1990] 16th - TEMP - TIED MINIMUM MAXIMUM 55 [previous 2005] " [ - - ] 

    North Carolina:

    Greensboro - NWS Raleigh (RAH) reports: " ...CLIMATE RECORDS FOR THE MONTH OF APRIL... 6TH...RECORD SNOWFALL OF A TRACE TIED THE OLD RECORD OF A TRACE SET IN 1931. 8TH...LOW OF 25 BROKE OLD RECORD OF 28 SET IN 1990/1972. 26TH...LOW OF 65 BROKE THE OLD RECORD OF WARMEST LOW OF 64 SET IN 1939. 27TH...LOW OF 62 TIED THE OLD RECORD OF WARMEST LOW OF 62 SET IN 1954. The April 2007 North Carolina Weather Review is located here: http://www.erh.noaa.gov/rah/ncsummaries/MonthlySummary.Apr.2007.doc. " - [ + + ]

    Raleigh - Bob report: " Following a mild March, the average daily temperature for April was slightly below normal by 0.4 degrees. Rainfall for April totaled 4.06" which is 1.26" above normal. Thunderstorms were observed on two days ( April 12th and 15th) during the month. There were a number of warnings issued for the region on the 15th including a tornado watch that was in affect for approximately thirteen hours. " - [ - + ]

    Raleigh - NWS Raleigh (RAH) reports: " April 2007 brought damaging freezes, strong winds, and few showers. April 2007 will be most remembered for the hard freezes that affected inland areas of North Carolina during the second week of the month. This was followed by a strong wind event on April 16. The combination of hard freezes and strong winds brought significant damage throughout the state, especially to the agricultural community. The strongest winds recorded this month were associated with the extreme gradient wind event of April 16. A case event summary for this event can be found at: http://www4.ncsu.edu/~nwsfo/storage/cases/20070416/. There were large week-to-week temperature swings during April, which were often accompanied by windy conditions. The largest swings in temperatures came during the first two weeks of the month, when temperatures soared into the 80s April 2-4, followed by hard freezes April 6-10. Another week of cool weather followed the freezes during the April 16-21 period. Then temperatures again soared to near record levels during the last week of the month. The overall average temperatures for the entire 30 days averaged within a degree of the 30 year normal; however, there were very few days this month in which the daily temperatures were considered "normal". There were not many showers or rainy days during the month to help the early spring plants and vegetation recover from the harsh freezes and strong winds. The only significant rain events occurred April 11-12, and April 14-15. It was during these two events that approximately 90 to 95 percent of the month's total rainfall occurred. Most reporting stations across central sections of the state recorded near or slightly above normal monthly rainfall totals. These areas were surrounded by very dry conditions over the western and eastern thirds of the state, where generally 1 to 2 inch rainfall deficits were observed. These totals equated to only 25 to 50 percent of normal. ...RDU CLIMATE RECORDS FOR THE MONTH OF APRIL... 7TH...RECORD SNOWFALL OF A TRACE BROKE THE OLD RECORD OF 0 SNOWFALL. 8TH...LOW OF 27 BROKE THE OLD RECORD OF 28 SET IN 1975/1950. 26TH...LOW OF 65 BROKE THE OLD RECORD OF WARMEST LOW OF 63 SET IN 1960. 27TH...LOW OF 63 TIED THE OLD RECORD OF WARMEST LOW OF 63 SET IN 1954.

    The April 2007 North Carolina Weather Review is located here: http://www.erh.noaa.gov/rah/ncsummaries/MonthlySummary.Apr.2007.doc. " - [ + + ]

    NEARBY CITIES:

    Tri-Cities - notes from NWS MRX: " Tri-Cities received 2.64 inches of precipitation in April, which was 0.59 inches below normal. It ranked as the 23rd driest April on record at Tri-Cities. Measurable precipitation fell on eleven days, but only two of those days had more than one-half of an inch of rain. The heaviest precipitation fell on the 15th, when 0.55 inches was received. A daily rainfall record was broken on the 14th when 0.52 inches fell, breaking the old record of 0.42 inches set in 1974. The driest April at Tri-Cities was back in 1976, when only 0.21 inches was recorded. The monthly average temperature at Tri-Cities was 53.5 degrees, which was 1.1 degree below normal. It ranked as the 15th coldest April on record at Tri-Cities. Two daily record lows were broken. The first was on the 8th when the low dipped to 21 degrees, breaking the old record of 25 degrees set in 1990. Another daily record low was broken on the next night when the low temperature fell to 22 degrees, breaking the previous record of 24 degrees set in 1972. The coldest April at Tri-Cities was back in 1983, when the average temperature was 50.5 degrees. " - [ - - ]

    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 2006-2007 season (inches)
    N1   average wind speed (miles per hour) 6 maximum barometric pressure (inches)
    N2 dominant wind direction 6A date of maximum barometric pressure
    O  number of days with thunder  7 minimum barometric pressure (inches)
    P  number of days with hail 7A date of minimum barometric pressure
    Q  number of days with glaze 8   average sea-level pressure
    R  number of days with ice pellets STN  Station
    R2 sky cover percentage NR not recorded
    R1 number of days with dense fog [1/4 mile and less visibility] (i) incomplete data
    S  local observation time for temps/precipitation (M) missing, if listed in data table
     ~ "about" E estimated
     +  additional indeterminate number of days CWA - NWS Office County Warning Area


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         NWS Blacksburg, VA
         NWS Raleigh, NC
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         NWS Greenville-Spartanburg, SC
         NWS Columbia, SC
         NWS Charleston, SC
         NWS Morristown, TN

         National Weather Service Homepages

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

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

      ROK   Roanoke, VA 6SW Wendell Prillaman  4/76 wlprillaman@cox.net
    ANN    Annandale, VA 1 3/4 ENE - Lowell Koontz  8/31/79  wwkoontz@verizon.net AKQ    Wakefield, VA NWS Wakefield Municipal Airport 36-58-53N 077-00-04W 33M
    DCA    Arlington, VA Washington, DC, Reagan Washington National Airport 38-50-54N 077-02-03W 18M WSH   Washington, VA  David Yowell runamok@runamok.com
    BCB    Blacksburg, VA NWS Virginia Tech Airport 37-13N 080-25W   
    BRI     Bridgewater, VA Clayton Towers Ctowers@rica.net WOO  Woodstock, VA 5NW Lauck Walton - 12/1/85 jwalton@shentel.net
    CEN  Centreville, VA Paul Bassett 1985, 38 50.9788' N LAT. 77 25.6374' W LON. | Elevation 324' | m.psb@verizon.net LDY Ladysmith, VA Danny Jessee 2003 danny@dannyjessee.com
       WAL   Wallops Island, VA 37 56'26" N 75 27'47" W Wallops Flight Facility Airport
    CHO   Charlottesville, VA  Charlottesville-Albemarle Airport ASOS  (Rappahannock County) 38-08-18N 078-27-21W 192M AVL    Asheville, NC  Asheville Regional Airport 35-25-55N 082-32-15W 670M
      MRH    Beaufort, NC  Michael J. Field Airport 34-44-01N 076-39-38W 3M
    DAN  Danville, VA, Danville Regional Airport, 36-34-22N 079-20-10W 175M    
    IAD   Dulles - Washington-Dulles International Airport  38-56-05N 077-26-51W 93M  CLT    Charlotte, NC NWS Charlotte/Douglas International Airpot 35-12-48N 080-56-55W 220M
    FCH    Falls Church, VA Erica Page - 3/7/94 Windie1970@aol.com HKY  Hickory, NC 
    HAM    Hampton, VA 5NE Dave Kessel 1989 david82@verizon.net ECG  Elizabeth City, NC,  Coast Guard Air Station 36-15-47N 076-10-58W 11M
    CTR  Winterpock in Chesterfield County, VA Albert Arnold 06/03 FAY  Fayetteville, NC Fayetteville Regional Airport, 34-59-22N 078-52-48W 55M
    HER    Herndon, VA R.M. Beall P- 10/76   T-  1/91 beall47@earthlink.net 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
       EWN    New Bern, NC  Craven County Regional Airport 36-04-03N 077-02-50W 3M
    LXI     Lexington, VA  Scott M. Lancey, -  06/96 weather@midatlanticwx.com RAL    Raleigh, NC 7NNW  Bob Woodson -  6/1/93 kf4mmm@qsl.net
    LKU     Louisa, VA 1N Joseph Bowers 1944 - NWS ID  44-5050-02jmbiii@earthlink.net RDU   Raleigh-Durham, NC Raleigh-Durham International Airport 35-52-14N 078-47-11W 130M
    LOU     Louisa, VA 6S John Bullock (about 1970) INACTIVE 1/1/02 - MEMBER DECEASED FALL 2004 ROX    Roxboro, NC 2SE Merriell A. Jay 1/93
    LYH     Lynchburg, VA NWS Lynchburg Regional Airport 37-19-15N 079-12-24W 295M ILM     Wilmington, NC NWS New Hanover International Airport 34-16-06N 077-54-22W 9M
    NEW    Newmarket, VA 2W Joyce Winfree joywood@shentel.net CHS   Charleston, SC NWS Charleston Air Force Base 32-53-56N 080-02-26W 13M
    NPN     Newport News, VA 7N Gary Leonard -  6/91 GaryMLeonard@aol.com CAE    Columbia, SC NWS Columbia Metropolitan Airport 33-56-31N 081-07-05W 73M 
    NOR     Norfolk, VA 3NE Jim Fentress 6/1/77 FLO    Florence, SC Florence Regional Airport 34-11-16N 079-43-51W 44M
    ORF     Norfolk, VA 5NE 36-54-13N 076-11-31W 14M  1871 GSP   Greenville-Spartanburg, SC NWS Greenville-Spartanburg Airport 34-53-02N 082-13-15W 286M 
    POR     Portsmouth, VA 36.81° North 76.33° West 3S Bill Trotter -  7/1/76 wxr@cox.net CRE    North Myrtle Beach, SC Grand Strand Airport 33-48-42N 078-43-26W 10M
    MEC     Mechanicsville, VA Glen Martin 11/19/91 OGB   Orangeburg, SC  Orangeburg Municipal Airport 33-27-50N 080-51-13W 59M
    FHC    Norfolk, VA  Fred Heutte Center 36° 54'N 76° 16'W 01/01/03 fhcgarden@cox.net AND   Anderson, SC 
    RIC     Richmond, VA Richmond International Airport 37-30-40N 077-19-24W 50M TRI     Tri-cities, TN  (Bristol / Johnson / Kingsport), Tri-City Regional Airport 36-28-47N 082-23-56W 474M 
    ROA    Roanoke, VA Roanoke Regional Airport 37-19-01N 079-58-27W 362M DAV  Davis, WV Dave Lesher canaanwx@canaantv.tv