The Atlantic Coast Observer Network - Virginia/North Carolina/South Carolina

http://www.genserva.com/acon

SUMMARY OF CLIMATOLOGICAL DATA 



APRIL 2012

...TEMPERATURES AVERAGE CLOSER TO NORMAL AFTER RECORD MARCH WARMTH
NEAR NORMAL FOR VIRGINIA WHILE ABOVE NORMAL FOR THE CAROLINAS...
...RAINFALL AVERAGES SLIGHTLY BELOW NORMAL ALL THREE STATES...

  •   PAUL BASSETT'S ON THE MOVE    Centreville, VA (CEN) contributor to ACON VA/NC/SC, Paul Bassett, sends his last data report with this month's summary. Paul has been in our group since I started managing the data in August of 1995. So Paul, thank you for your 17 years of efforts, especially having been a steadfast contributor, not missing any months, to my knowledge, of well-maintained, accurate data. Good luck as you step away and follow life's pursuits!


  •   NCDC DATA IS NOW FREE    The National Climatic Data Center in Asheville now provides weather data at no cost. The free data can be found at http://www7.ncdc.noaa.gov/IPS/


  • DROUGHT MONITOR    http://drought.unl.edu/MonitoringTools/USDroughtMonitor.aspx    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 Station Extremes - APRIL 2012
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    90°
    Richmond
    Mechanicsville
    Norfolk (ORF)
    28°
    Blacksburg
    Danville
    60.6°
    Norfolk
    52.8°
    Blacksburg
    4.81"
    Blacksburg
    1.36"
    Charlottesville
    North Carolina
    89°
    Fayettelville
    Whiteville
    31°
    Raleigh (RAL)
    Lumberton
    63.5°
    Wilmington
    58.5°
    Asheville
    5.32"
    Cape Hatteras
    1.46"
    Wilmington
    South Carolina
    91
    Columbia
    Charleston
    Orangeburg
    33°
    Greenville-Spartanburg
    67.1°
    Charleston
    62.6°
    Greenville-Spartanburg
    2.95"
    Greenville-Spartanburg
    1.32"
    Charleston


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


    TEMPERATURE / WINDS/ ELEMENTS FOLLOWED BY
    PRECIPITATION / BAROMETRIC PRESSURE

    VIRGINIA | NORTH CAROLINA | 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 CWA TIME RECORDED
    BCB 64.90 40.80 52.80 2.10 81.00 15,16 28.00 7 0 0 3 0 72% 35 280,290 9,24 5.1 6 0 0 0 1 LWX 2400
    BRI 65.50 43.30 54.40 1.60 86.00 16 30.00 7 0 0 3 0 55% 1 0 0 0 0 LWX 2400
    CEN 65.40 44.00 54.70 0.30 87.00 16 34.00 7 0 0 0 0 58% 37 156 9 2.8 320 1 0 0 0 1 LWX 1200/2400
    CHT 67.10 43.80 55.40 1.60 89.00 16 34.30 7 0 0 0 0 62% 14 135,180 16,22 0.6 360 1 0 0 0 1 LWX 2400
    CHO 69.10 44.90 57.00 1.70 87.00 16 34.00 6,24 0 0 0 0 37 300 10 4.9 0 0 0 0 2 LWX 2400
    DAN 68.90 43.60 56.20 -2.00 83.00 4,16 28.00 12 0 0 3 0 67% 41 260 10 6.6 5 0 0 0 1 RNK 2400
    DCA 68.10 48.50 58.30 1.50 89.00 16 40.00 11 0 0 0 0 52% 43 300 9 9.3 0 0 0 0 0 LWX 2400
    IAD 66.50 41.60 54.00 -0.40 88.00 16 30.00 7 0 0 3 0 58% 40 280 9 7.9 1 0 0 0 1 LWX 2400
    GAV 67.19 44.26 55.73 -4.80 88.00 16 33.00 12 0 0 0 0 62% 31 360 2 3 0 0 0 0 AKQ 2400
    HAM 67.00 49.00 58.00 84.00 16 39.00 12 AKQ 2400
    HDV 66.10 42.80 54.50 -1.60 87.00 16 31.00 7 0 0 1 0 64% 19 225 10 135 1 0 0 0 0 LWX 2400
    LYH 68.30 43.80 56.00 0.60 85.00 16 30.00 12 0 0 2 0 59% 35 270 10 5.3 3 0 0 0 3 RNK 2400
    NPN 69.40 46.40 57.80 -1.30 86.90 16 35.40 8 0 0 0 0 32 270 10 2.9 225 2 0 0 0 0 AKQ 2400
    FHC 68.79 49.21 59.00 0.80 85.70 16 41.80 12,24 0 0 0 0 57% 33 280 10 2.0 203 2 0 0 0 0 AKQ 2400
    NOR 67.70 47.20 57.40 -0.80 84.00 16 39.00 8,13,25 0 0 0 0 0 0 0 0 0 AKQ 2400
    ORF 70.40 50.70 60.60 2.40 90.00 16 42.00 24 1 0 0 0 57% 41 020 2 9.5 1 0 0 0 0 AKQ 2400
    POR 70.00 48.30 59.10 -0.30 87.00 16 38.00 12 0 0 0 0 67% 33 045 11,18 5.0 326 2 0 0 0 0 AKQ 2400
    CTR 70.40 44.00 57.10 0.00 88.80 16 30.70 7 0 0 4 0 65% 21 270 10 0.6 280 2 0 0 0 0 AKQ 2400
    MEC 71.03 45.90 58.50 90.00 16 35.00 7 0 0 0 0 3 0 0 0 0 AKQ 2400
    RIC 70.30 46.80 58.50 0.30 90.00 16 36.00 24,25 1 0 0 0 59% 39 220 10 8.1 1 0 0 0 0 AKQ 2400
    ROA 69.40 46.80 58.10 1.40 89.00 16 34.00 7 0 0 0 0 58% 48 280 10 7.4 2 0 0 0 2 RNK 2400
    WAL 66.40 45.50 56.00 2.00 87.00 16 34.00 8 0 0 0 0 37 320 9 9.4 2 0 0 0 0 AKQ 2400
    WOO 63.50 44.60 54.10 -4.80 84.00 17 36.00 24 0 0 0 0 0 0 0 0 2 LWX 0800
    WSH 65.30 44.50 54.90 -0.77 86.10 16 34.00 24 0 0 0 0 62% 19 158 2 0.7 068 1 0 0 0 0 LWX 2400
    Averages 67.78 45.43 56.59 -0.02 86.77 34.47 0.1 0.0 0.8 0.0 61% 33.4 5.2 1.7 0.6
    STN A B C C1 D E F G H I J K K1 L M N N1 N2 O P Q R R1 CWA TIME RECORDED
    STN A B C C1 D E F G H I J K K1 L M N N1 N2 O P Q R R1 CWA TIME RECORDED
    AVL 70.4 46.6 58.5 3.3 83 30 33 13 0 0 0 0 65% 43 300 26 6.8 4 0 0 0 4 GSP 2400
    MRH 71.6 54.0 62.8 1.8 81 27 39 7 0 0 0 0 46 220 10 10.2 0 0 0 0 0 MHX 2400
    CLT 73.2 49.1 61.1 1.7 85 30 33 12 0 0 0 0 64% 30 300 1,23 6.3 2 0 0 0 0 GSP 2400
    ECG 71.4 49.8 60.6 1.9 86 16 38 8,12 0 0 0 0 62% 43 230 10 9.7 0 0 0 0 1 AKQ 2400
    FAY 74.5 51.1 62.8 0.1 89 17 36 13 0 0 0 0 64% 51 280 24 7.6 3 0 0 0 2 RAH 2400
    GSO 70.6 48.2 59.4 0.6 83 16,17 32 12 0 0 1 0 63% 44 290 10 8.2 6 0 0 0 1 RAH 2400
    HSE 69.5 54.2 61.8 2.3 83 17 40 3 0 0 0 0 74% 43 170 22 9.5 0 0 0 0 1 MHX 2400
    HKY 71.6 48.7 60.2 1.8 83 4,16 33 12 0 0 0 0 38 270 10 5.2 4 0 0 0 3 GSP 2400
    LBT 75.1 50.1 62.6 0.9 87 17 31 12 0 0 1 0 69% 36 320 24 5.5 0 0 0 0 1 ILM 2400
    EWN 72.8 49.7 61.2 0.5 87 17 35 7 0 0 0 0 66% 33 040 1 7.0 3 0 0 0 5 MHX 2400
    RDU 71.4 48.1 59.8 -0.5 86 17 32 12 0 0 1 0 65% 37 230 10 6.3 3 0 0 0 1 RAH 2400
    RAL 71.5 46.6 59.1 0 86 12 31 12 0 0 1 0 27 10 3 0 0 0 0 RAH 2400
    ROX 69.8 47.4 58.8 1.5 85 4 33 12 0 0 0 0 66% 34 270 10 270 6 0 0 0 2 RAH 2400
    WHI 75.1 51.6 63.4 2.5 88.9 17 34.9 13 0 0 0 0 70% 27 292 26 3.0 172 2 0 0 0 6 ILM 2400
    ILM 74.3 52.6 63.5 0.5 87 17 37 7 0 0 0 0 67% 40 250 26 7.6 5 0 0 0 3 ILM 2400
    Averages 72.2 49.9 61.0 1.3 85.3 34.5 0.0 0.0 0.3 0.0 66% 38.1 7.1 3.2 2.0
    STN A B C C1 D E F G H I J K K1 L M N N1 N2 O P Q R R1 CWA TIME RECORDED
    STN A B C C1 D E F G H I J K K1 L M N N1 N2 O P Q R R1 CWA TIME RECORDED
    AND 76.2 51.1 63.7 3.4 88 2 34 12 0 0 0 0 37 310 26 5.8 9 0 0 0 4 GSP 2400
    CAE 79.3 54.7 67.0 3.6 91 2 37 13 1 0 0 0 61% 39 050,300 2,10 5.9 4 0 0 0 2 CAE 2400
    CRE 74.2 55.4 64.8 3.2 86 26 36 7 0 0 0 0 69% 36 220 26 7.5 4 0 0 0 4 ILM 2400
    CHS 78.6 55.5 67.1 2.3 91 2 41 1 0 0 0 0 38 270 5 8.1 2 0 0 0 1 CHS 2400
    FLO 76.6 53.1 64.8 1.5 87 17 37 12,13 0 0 0 0 65% 55 260 10 6.9 7 0 0 0 2 ILM 2400
    GSP 74.6 50.5 62.6 2.1 88 2 33 12 0 0 0 0 65% 32 030,300 5,24 6.0 10 0 0 0 1 GSP 2400
    OGB 78.9 53.2 66.1 2.6 91 2 38 13 2 0 0 0 31 250 26 5.3 1 0 0 0 4 CAE 2400
    Averages 76.9 53.4 65.2 2.7 88.9 36.6 0.4 0.0 0.0 0.0 65% 38.3 6.5 5.3 2.6
    STN A B C C1 D E F G H I J K K1 L M N N1 N2 O P Q R R1 CWA TIME RECORDED
    STN A B C C1 D E F G H I J K K1 L M N N1 N2 O P Q R R1 CWA TIME RECORDED
    TRI 70.9 45.0 58.0 2.6 84 30 27 12 0 0 3 0 41 240 10 4.6 6 1 0 0 5 MRX 2400
    DAV 55.4 33.4 44.4 80 17 23 11,12 0 1 15 0 PBX 2400
    STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 CWA TIME RECORDED
    BCB 4.81 1.33 1.19 26 1.19 26 10 1 14.26 T 23 1 0 T 10.0 RNK 2400
    BRI 1.88 -1.02 0.86 22 1.04 21-22 7 0 8.67 0.0 4.8 30.210 18 29.700 2 29.975 LWX 2400
    CEN 3.32 -0.15 1.10 8,22 1.10 8,22 10 2 9.25 0.0 3.5 30.520 8 29.380 22 29.950 LWX 2400
    CHT 1.91 -1.31 0.86 22 0.91 22-23 8 0 7.85 0.0 2.6 30.322 30 29.360 23 29.940 LWX 2400
    CHO 1.36 -2.00 0.47 18 0.50 21-22 6 0 10.01 29.350 23 LWX 2400
    DAN 2.76 -0.70 1.15 26 1.48 25-26 9 1 10.42 0.0 3.0 30.300 14 29.460 23 RNK 2400
    DCA 1.92 -1.14 1.27 22 1.30 22-23 10 1 7.46 0.0 2.0 29.350 23 LWX 2400
    IAD 1.82 -1.65 0.96 22 0.97 22-23 8 0 7.61 0.0 2.8 29.350 23 LWX 2400
    GAV 3.09 1.44 22 1.59 21-22 8 1 10.71 0.0 7.4 30.300 28 29.380 23 29.940 AKQ 2400
    HAM 3.01 1.99 22 8 1 30.320 14 29.340 22 29.960 AKQ 2400
    HDV 1.93 -1.56 1.01 22 8 1 7.94 0.0 2.6 30.300 30 29.340 23 AKQ 2400
    LYH 2.44 -0.87 0.55 22 0.62 21-22 9 0 13.05 0.0 8.5 30.330 28 29.430 23 RNK 2400
    NPN 4.00 0.36 2.18 22 2.29 21-22 10 1 12.64 0.0 0.8 30.330 14 29.330 3 AKQ 2400
    FHC 3.09 -0.32 2.35 22 2.39 22-23 10 1 12.11 0.0 0.2 30.330 14 29.333 22 29.960 AKQ 2400
    NOR 3.14 -0.68 2.37 22 2.50 22-23 10 1 11.45 0.0 0.5 AKQ 2400
    ORF 2.95 -0.46 2.24 22 2.32 21-22 9 1 10.04 0.0 0.5 30.330 14 29.290 22 AKQ 2400
    POR 3.19 -0.18 2.43 22 2.44 22-23 10 1 13.63 0.0 0.5 30.330 14 29.320 22 29.951 AKQ 2400
    CTR 2.22 -1.74 1.22 22 1.22 22 8 1 9.05 0.0 6.1 30.280 14 29.320 23 29.922 AKQ 2400
    MEC 3.58 1.22 22 1.69 22-23 7 1 10.46 0.0 7.5 30.030 12 29.290 22 29.720 AKQ 2400
    RIC 2.40 -0.87 1.59 22 1.60 21-22 9 1 9.86 0.0 4.5 30.320 14 29.390 23 AKQ 2400
    ROA 3.04 -0.33 0.91 18 1.18 21-22 8 0 10.46 T 11 1 0 T 6.1 30.370 28 29.490 23 RNK 2400
    WAL 3.78 0.71 2.12 22 2.54 21-22 10 1 12.62 0.0 0.5 30.330 30 29.260 22 AKQ 2400
    WOO 2.56 -0.72 0.91 22-23 10 0 8.40 0.0 5.6 30.280 30 29.410 23 LWX 0800
    WSH 2.56 -1.56 0.70 22 0.70 22 11 0 7.43 T 3.8 30.340 30 29.600 4 LWX 2400
    Averages 2.78 -0.71 1.40 1.48 8.9 0.7 10.23 0.0 3.8 30.309 29.385 29.924
    STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 CWA TIME RECORDED
    STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 CWA TIME RECORDED
    AVL 4.66 1.33 1.30 5 2.16 17-18 11 2 12.82 0.0 T 30.320 14 29.520 22 GSP 2400
    MRH 2.76 -0.79 0.87 28 0.88 27-28 7 0 9.87 0.0 T 30.380 14 29.340 22 MHX 2400
    CLT 1.67 -1.37 0.40 18 0.48 5-6 9 0 9.14 0.0 T 30.350 14 29.510 22 GSP 2400
    ECG 2.72 -0.42 1.22 22 1.22 22 6 1 12.41 30.360 14 29.280 22 AKQ 2400
    FAY 2.36 -0.46 0.84 5 1.06 5-6 7 0 9.76 29.490 23 RAH 2400
    GSO 2.23 -1.34 0.53 22 0.78 21-22 12 0 8.82 0.0 T 29.490 23 RAH 2400
    HSE 5.32 1.68 3.18 11 3.18 22 10 1 17.91 0.0 T 30.380 14 29.310 22 MHX 2400
    HKY 2.96 -0.75 0.76 18 1.35 17-18 9 0 10.11 30.290 14 29.490 22 GSP 2400
    LBT 2.71 -0.11 0.67 6 1.24 5-6 9 0 11.45 30.350 14 29.430 22 ILM 2400
    EWN 2.52 -0.65 0.72 19 0.82 18-19 8 0 10.30 0.0 T 30.390 14 29.360 22 MHX 2400
    RDU 2.63 -0.29 0.82 22 1.00 21-22 9 0 11.89 0.0 0.9 29.490 23 RAH 2400
    RAL 2.74 -0.06 1.01 21-22 8 1 11.97 0.0 0.6 30.360 14 29.650 2 RAH 2400
    ROX 2.30 -0.63 1.11 22 1.11 22 8 1 9.51 T 5 1 0 T 3.3 30.730 6 29.600 3 30.180 RAH 2400
    WHI 2.70 -0.33 0.74 6 0.88 26-27 12 0 11.53 0.0 0.0 30.368 14 29.352 22 29.978 ILM 2400
    ILM 1.46 -1.36 0.53 28 0.59 27-28 11 0 8.97 0.0 T 30.380 14 29.380 22 ILM 2400
    Averages 2.78 -0.37 0.98 1.18 9.1 11.10 0.0 0.4 30.388 29.446 30.079
    STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 CWA TIME RECORDED
    STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 CWA TIME RECORDED
    AND 2.71 -0.41 0.66 26 0.87 17-18 9 0 10.92 30.330 14 29.470 22 GSP 2400
    CAE 2.28 -0.34 1.76 22 1.80 21-22 8 1 8.71 0.0 0.0 30.340 14 29.490 22 CAE 2400
    CRE 1.87 -1.09 0.53 6 0.98 5-6 10 0 8.46 30.370 14 29.390 22 ILM 2400
    CHS 1.32 -1.59 0.61 5 0.81 5-6 8 0 9.74 0.0 0.0 30.340 14 29.430 22 CHS 2400
    FLO 2.21 -0.41 0.54 6 0.73 27-28 10 0 10.95 30.350 14 29.440 22 ILM 2400
    GSP 2.95 -0.41 0.62 22 0.99 17-18 10 0 11.56 0.0 T 30.320 14 29.470 22 GSP 2400
    OGB 2.52 -0.33 1.30 22 1.30 22 9 1 8.96 30.340 14 29.490 22 CAE 2400
    Averages 2.27 -0.65 0.86 1.07 9.1 0.3 9.90 30.341 29.454
    STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 CWA TIME RECORDED
    TRI 3.83 0.5 1.33 3 1.33 3 12 1 14.72 0.0 1.2 30.280 12 29.61 5 MRX 2400
    DAV 2.75 0.67 29 0.67 29 14 0 20.3 3.4 24 5 3 9.2 117.4 PBX 2400
    Averages
    STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 CWA TIME RECORDED

    Virginia:

    Arlington - " AFTER A RECORD WARM MARCH...TEMPERATURES THIS APRIL IN WASHINGTON DC RETURNED CLOSER TO SEASONABLE LEVELS BUT STILL AVERAGED ABOVE NORMAL FOR THE MONTH. APRIL 2012 WAS THE SIXTH CONSECUTIVE MONTH IN WASHINGTON WITH ABOVE- NORMAL TEMPERATURES. THE MONTHLY AVERAGE TEMPERATURE WAS 1.5F ABOVE NORMAL...WHICH WAS THE LOWEST DEPARTURE FROM THE MONTHLY NORMAL DURING THIS SIX-MONTH WARM PERIOD. HIGHS REACHED AT LEAST 80F ON THREE CALENDAR DAYS THIS APRIL... WHICH WAS THE LEAST NUMBER OF 80-DEGREE DAYS IN APRIL SINCE 2006. APRIL WAS THE FIRST MONTH SINCE JANUARY OF THIS YEAR WITH NO DAILY MAXIMUM OR HIGH MINIMUM TEMPERATURE RECORDS BROKEN. APRIL 2012 WAS THE SEVENTH APRIL IN WASHINGTON DC CLIMATE RECORDS WHERE THE TEMPERATURE DID NOT FALL BELOW 40F DURING THE ENTIRE MONTH. THE AVERAGE HIGH TEMPERATURE FOR THE FIRST HALF OF THE MONTH /68.0F/ WAS NEARLY EQUAL TO THE AVERAGE HIGH TEMPERATURE FOR THE SECOND HALF OF THE MONTH /68.2F/. APRIL 2012 WAS THE FOURTH CONSECUTIVE MONTH OF BELOW-NORMAL RAINFALL. EIGHTY PERCENT OF THE APRIL RAINFALL OCCURRED WITH AN EAST COAST STORM SYSTEM THAT PRODUCED RAIN OVER A THREE-DAY PERIOD FROM THE 21ST-23RD. PRIOR TO THIS WET PERIOD...A MEAGER 0.21 INCH OF RAIN FELL DURING THE FIRST 20 DAYS OF THE MONTH...WHICH TIED 1871 FOR THE 2ND DRIEST APRIL 1-20 PERIOD ON RECORD. ONLY APRIL 1985 WAS DRIER...WHEN 0.03 INCH FELL DURING THE FIRST 20 DAYS OF THE MONTH. " - [ + - ] - Notes from NWS Sterling, VA

    Bridgewater - Clayton adds these notes: " So far this year, there have been 7 thunderstorms, but none severe. I call the meek thunder "rumble thunder". A number of our thunderstorms have occurred at night, which is unusual. Most of this month's rain has occurred during the later part of the month. " - [ + - ]

    Centreville - A final note from Paul: " The last half of the month seemed to step up the rain gauge tempo to help ensure our May flowers. I'll be moving away from sunny Centreville in a matter of weeks. I must say I'll miss being a contributor to the monthly ACON reports but I'm sure it won't be long before I find more trouble to get into. Best, Paul. " - [ + - ]

    Chantilly - Russ sends these additional notes: " April kept this station's consecutive streak of warmer and drier than normal going, although nothing like the record warmth in March 2012. The mean monthly temperature was slightly above March at 55.4 (+1.6). The mean high temperature was 67.1 (+1.2) and the mean low temperature was 43.8 (+3.1). We broke one record, with a record high low min temp on the 16th (59.8). Precipitation was 1.31" below normal, and snow was 0.4" below normal. *Please note, anemometer is currently partially obstructed from the North and East " - [ + - ]

    Dulles - from NWS Sterling (KLWX): " AFTER A RECORD WARM MARCH...TEMPERATURES IN APRIL RETURNED TO SEASONABLE LEVELS. THE MONTHLY AVERAGE TEMPERATURE FOR MARCH /54.3F/ WAS WARMER THAN THE MONTHLY AVERAGE TEMPERATURE FOR APRIL /54.0F/. THIS WAS THE FIRST YEAR THAT MARCH WAS WARMER THAN APRIL. APRIL TEMPERATURES WERE SLIGHTLY BELOW NORMAL..ENDING A FIVE-MONTH STREAK OF ABOVE-NORMAL TEMPERATURES AT DULLES. APRIL 2012 WAS THE COOLEST APRIL AT DULLES SINCE 2007...WHEN THE MONTHLY AVERAGE TEMPERATURE WAS 52.2F. HIGHS REACHED AT LEAST 80F ON THREE CALENDAR DAYS THIS APRIL...WHICH WAS THE FEWEST NUMBER OF 80-DEGREE DAYS IN APRIL SINCE 2006. ONE DAILY HIGH MINIMUM TEMPERATURE RECORD WAS BROKEN AT DULLES THIS APRIL. ON THE 16TH...61F BROKE THE PREVIOUS DAILY HIGH MINIMUM TEMPERATURE RECORD OF 57F SET IN 2000...2002 AND 2003. ONE DAILY LOW MAXIMUM TEMPERATURE RECORD AT DULLES WAS TIED THIS APRIL. ON THE 23RD...47F TIED THE DAILY LOW MAXIMUM TEMPERATURE RECORD FIRST SET IN 1984. THE AVERAGE HIGH TEMPERATURE FOR THE FIRST HALF OF THE MONTH /66.7F/ WAS SLIGHTLY WARMER THAN THE AVERAGE HIGH TEMPERATURE FOR THE SECOND HALF OF THE MONTH /66.3F/. APRIL 2012 WAS THE FOURTH CONSECUTIVE MONTH OF BELOW-NORMAL RAINFALL. TWO-THIRDS OF THE APRIL RAINFALL OCCURRED DURING A TWO-DAY PERIOD FROM THE 21ST-22ND IN ASSOCIATION WITH AN EAST COAST STORM SYSTEM. PRIOR TO THIS WET PERIOD...A MEAGER 0.41 INCH OF RAIN FELL DURING THE FIRST 20 DAYS OF THE MONTH. " - [ + - ]

    Glen Allen - Lowell adds: " April was cooler than March by 2.5F. The monthly mean temperature for April was 55.7F. April was wetter than average and had a departure of +0.62 inches based on the average of the past 3 years. However there was no measurable rain for the first 17 days of the month. All of the precipitation for April fell in 12 days during the last half of the month. The maximum rainfall recorded in a day was 1.44 inches on the 22nd. Measurable precipitation occurred on only 8 days. The high temperature for April was 88F on the 16th and there were 3 days that the temperature was 85F or higher. The lowest minimum was 33F recorded on the 12th and frost killed some of my neighbor's plants. There were four other mornings with very light scattered frost but no plants were harmed. The maximum wind gust was only 31 mph from the north that occurred on the 5th at 0023. The highest barometer recorded for the month was 30.30 inches on the 28th and that was the lowest maximum pressure recorded at this station for April. The lowest barometric pressure was 29.38 inches on the 23rd which is the highest minimum pressure recorded at this station for April. - [ - + ] "

    Herndon - Randy sends these notes: " April was below normal for temperature and precipitation. The temperatures ranged between a high of 87 and a low of 31. We averaged 1.6 degrees below normal for the month and the temperatures were very similar, both average high and low, as March. On the precipitation side, the month was 1.56" below normal with only 1.93" measured. This is the fourth consecutive month of below average precipitation. We had scattered light periods of precipitation throughout the month; but the vast majority of the month's rain came on the 22nd with 1.01" recorded. We have now had just under 8" for the year, which is now 5.0" below normal for the year. " - [ - - ]

    Richmond - from Member Lowell Koontz in Glen Allen, Virginia: " The airport (RIC) had 90F which was the highest maximum temperature for April on the 16th and the daily mean temperature for the 16th of 76.5F tied with 2002 for the highest mean for the date. The lowest minimum temperature at the airport was 36F on the 24th and 25th and that tied for 2nd place. Only 1901 and 1929 had a higher April monthly minimum temperature. Their April mean temperature was 58.5F which was a departure of +0.3F and was the 42nd warmest April since 1880 although it was still the coolest April since 2007. For comparison, last year was the 7th warmest April with a mean temperature of 61.8F and 2010 was the fourth warmest April since 1880 with a mean temperature of 62.2F. Their precipitation total was 2.40 inches, which was a departure of -0.87 inches. April was the 40th driest April in the past 125 years. The greatest April precipitation in one day was 1.59 inches on the 22nd. This ranked as the 19th greatest daily precipitation in the past 125 Aprils. " - [ + - ]

    Portsmouth - " April's average temperature (59.0) was 0.3 BELOW NORMAL. Precipitation was BELOW NORMAL by 0.18" or 95% of normal relative to normal Aprils for the period from 1977 to 2011. Cold frontal passages occurred on the 1st, 2nd, 5th, 10th, 17th, 22nd, and 27th while warm frontal passages were recorded on the 26th and 30th. STATION RECORDS: 15th - TEMPERATURE TIED Maximum 85 [previous 2006], 22nd - RAINFALL 2.43" [previous 0.82" 1984], 24th - TEMPERATURE Minimum 39 [previous 40 1982], 25th - TEMPERATURE Minimum 39 [previous 40 1999] By the end of the month, the yearly average temperature was 52.1 and that was 3.9 ABOVE normal while rainfall for the year was 13.63" or 0.63" BELOW normal (96% of normal). " - [ - - ] 

    North Carolina:

    Greensboro - from NWS Raleigh RAH: " NO DAILY OR MONTHLY RECORDS WERE SET AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT FOR THE MONTH OF APRIL. HOWEVER...THIS IS THE FIRST TIME ON RECORD AT RDU THAT THE AVERAGE MONTHLY TEMPERATURE FOR APRIL WAS LESS THAN IT WAS IN MARCH OF THE SAME YEAR. " - [ + - ]

    Raleigh - Bob reports: " APRIL WEATHER CAN BE SUMMED UP IN ONE WORD-"NORMAL". THE AVERAGE DAILY TEMPERATURE WAS NORMAL WHILE THE MONTHLY PRECIPITATION WAS ONLY 0.06" BELOW NORMAL. THE AVERAGE DAILY TEMPERATURE FOR APRIL WAS ACTUALLY LOWER THAN THE AVERAGE DAILY TEMPERATURE FOR LAST MONTH (MARCH). THE LAST FREEZING DAY OF THE SEASON OCCURRED ON APRIL 12TH WITH A LOW OF 31 DEGREES. THERE WAS NO SEVERE OBSERVED DURING APRIL. IN COMPARISON, ON APRIL 16, 2011, THERE WERE 30 TORNADOES IN CENTRAL AND EASTERN NC. " - [ -/+ - ]

    Raleigh - from NWS Raleigh RAH: " NO DAILY OR MONTHLY RECORDS WERE SET AT THE RALEIGH-DURHAM INTERNATIONAL AIRPORT FOR THE MONTH OF APRIL. HOWEVER...THIS IS THE FIRST TIME ON RECORD AT RDU THAT THE AVERAGE MONTHLY TEMPERATURE FOR APRIL WAS LESS THAN IT WAS IN MARCH OF THE SAME YEAR. " - [ - - ]

    Nearby Locations:

    Tri-Cities - from NWS MRX, Morristown, TN: " The monthly-averaged temperature at Tri-Cities in April was 58.0 degrees which was 2.8 degrees above normal. It tied with 2001 as the 21st warmest April on record. A record high temperature was tied on the 3rd when the temperature peaked at 82 degrees equaling the previous record set in 1986. The warmest April at Tri-Cities was in 1954 when the average temperature was 61.8 degrees. Tri-Cities received 3.83 inches of rain in April, which was 0.50 inches above normal. It ranked as the 23rd wettest April on record. Measurable precipitation occurred on 12 days and 5 of those days had more than one-quarter of an inch of precipitation. The heaviest precipitation fell on the 3rd when 1.33 inches of rain was reported, which also broke the daily rainfall record 1.18 inches set in 2000. The wettest April of the 74 years of observations taken at Tri-Cities was in 1998 when 7.03 inches of precipitation was recorded. " - [ + + ]



    COLUMN DENOTATIONS:

    A  maximum mean temperature T total precipitation (inches)
    T1 departure from normal
    B  minimum mean temperature U maximum calendar day precipitation (inches)
    C  monthly mean temperature
    C1 departure from normal
    U1 date of maximum calendar day precipitation
    D  maximum temperature V date(s) of maximum daily precipitation
    E  date(s) of maximum temperature V1 maximum 24-hour precip. & date(s)
    F  minimum temperature W number of days with precip. >= .01"
    G  date(s) of minimum temperature  X number of days with precip. >= 1.0"
    H  days with maximum temperature >=90 Y year-to-date precipitation (inches)
    I  days with maximum temperature <=32 Z maximum calendar day snowfall (inches)
    J  days with minimum temperature <=32 VRB Variable
    K  days with minimum temperature <= 0 1 date of maximum calendar day snowfall (inches)
    K1 average relative humidity 2 number of days with snowfall
    L  peak wind gust (miles per hour)  3 number of days with snowfall >= 1.0"
    M  direction of peak wind gust 4  total snowfall for month (inches)
    N  date(s) of peak wind gust  5 total snowfall for 2007-2008 season (inches)
    N1   average wind speed (miles per hour) 6 maximum barometric pressure (inches)
    N2 dominant wind direction 6A date of maximum barometric pressure
    O  number of days with thunder  7 minimum barometric pressure (inches)
    P  number of days with hail 7A date of minimum barometric pressure
    Q  number of days with glaze 8   average sea-level pressure
    R  number of days with ice pellets STN  Station
      NR not recorded
    R1 number of days with dense fog [1/4 mile and less visibility] (i) incomplete data
    S  local observation time for temps/precipitation (M) missing, if listed in data table
     ~ "about" E estimated
     +  additional indeterminate number of days CWA - NWS Office County Warning Area



    For Weather Headlines visit the National Weather Service Homepage
    or conduct a Google.com Search

    http://www.weather.gov
     

    National Weather Service Web Sites & Current Email Addresses
    Within or Nearby the ACON VA/NC/SC Area Can Be Found At:

         NWS Washington/Baltimore, VA/MD
         NWS Wakefield, VA
         NWS Blacksburg, VA
         NWS Raleigh, NC
         NWS Newport/Morehead City, NC
         NWS Wilmington, NC
         NWS Greenville-Spartanburg, SC
         NWS Columbia, SC
         NWS Charleston, SC
         NWS Morristown, TN

         National Weather Service Homepages

         National Climatic Data Center, Asheville, NC

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

      
    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,  Coast Guard Air Station 36-15-47N 076 10-58W 11M
    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@yahoo.com