The Atlantic Coast Observer Network - Virginia/North Carolina/South Carolina
http://www.genserva.com/acon

SUMMARY OF CLIMATOLOGICAL DATA 


OCTOBER 2011

...WE HAVE A NEW WEB ADDRESS...

...TEMPERATURES BELOW NORMAL MOST CAROLINAS STATIONS
WHILE CLOSER TO NORMAL FOR VIRGINIA LOCATIONS...
...DRY ACROSS SOUTH CAROLINA
MIXED DEPARTURES FOR RAINFALL IN NORTH CAROLINA AND VIRGINIA
WITH EXCESS RAINFALL FOR NORTHERN VIRGINIA...

  •   NEW WEB SERVER FOR ACON VA/NC/SC    Our old web server has ended the providing of personal webspace which we have used for years. Thus, our files have been migrated to a new commercial server. Our new web address for the group is http://www.genserva.com/acon For members of our group, this means we will be have unlimited space for file storage and we can upload more of your photos to share. Of course, any photos you submit should be weather-related and more significant than just a "pretty picture". However, in the weather field there are just some "pretty pictures" worthy of notice, so submit an occasional "pretty picture" and it may just get posted!!


  • TRICK OR TREAT? EARLY SNOWFALL SURPRISES NORTHEAST U.S.    Indeed! Snow in October!! While some of us in the north caught the tail-end of the snows, the bulk occurred over the Northeast. A great satellite shot here!


  • THE 2011 HURRICANE SEASON IN VISUAL REVIEW    Nolan Doeskin of CoCoRaHS sends this link to a new NOAA-produced video that shows the entire 2011 hurricane season in one 4+ minute video clip! Talk about a wonderful lesson in how the atmosphere works. Take a look if you can spare a few minutes. http://www.youtube.com/watch?feature=player_embedded&v=fX7Q-0QuID4


  • -from CoCoRaHS website:  FLAKES, BUT NO ACCUMULATION!    An observer from North Carolina writes: "If you physically observe snow during the 24-hr period preceding your observation, but it all melts once it hits the ground (or melts overnight), what's the best way to report in CoCoRaHS [and for general documentation] that the snow actually occurred and that it may have contributed some to total water in the gage?" Great Question! Here's our answer: "If snow falls but all melts on contact with the ground without ever reaching a depth of 0.1" or greater, then report "T" for "New Snow" and 0.0" for the total depth of snow on the ground."


  • SNOW TRAINING WEBINAR    Join CoCoRaHS for a "Snow Training Webinar" via your computer on the evening of December 12th or the morning of December 16th! Join us as we explore the art of measuring winter weather. Our Webinars will introduce new volunteer observers to the proper techniques for measuring snow in their yards. They will also serve as a refresher for those who have been through our training before. We will explore measuring new snowfall and snow on the ground, as well as taking core samples to determine the snow water equivalent of your samples. Snow can be tricky to measure, but with some training and practice, it becomes a less daunting task. These hour long identical Webinars are free and will be led by Nolan Doesken CoCoRaHS's National Director. Space is limited to the first 100 registrants, so register today! We will notify the first 100 who register of their acceptance to the webinar.

    Title: CoCoRaHS Snow Training Webinar
    Date: Monday, December 12, 2011
    Time: 8:OO PM Eastern, 7:OO PM Central, 6:OO PM Mountain, 5:OO PM Pacific
    Reserve your Webinar seat now for the December 12th Evening Webinar by registering here: Evening Snow Webinar Registration.

    Title: CoCoRaHS Snow Training Webinar
    Date: Friday, December 16, 2011
    Time: 1:OO PM Eastern, 12:OO Noon Central, 11:OO AM Mountain, 10:OO AM Pacific
    Reserve your Webinar seat now for the December 16th Morning Webinar by registering here: Morning Snow Webinar Registration.

    The CoCoRaHS Snow Training Webinar will take place in mid-January. Stay tuned for the announcement.



  •   CoCoRaHS On You Tube    from the CoCoRaHS website -"CoCoRaHS has launched the CoCoRaHS YouTube Channel (http://www.youtube.com/cocorahs). This is the location where you will find official CoCoRaHS videos. Additional videos will be added on a fairly regular basis. For those of you not familiar with YouTube, the site is free and easy to access with your computer. With this announcement, we have released a "new animated introduction video" describing the network in an animated, easy to watch style. Our goal is to have something that appeals to all ages, is attention grabbing, funny and still educational. We hope you like it. Let us know what you think. If this video becomes popular we will work with our artist to create additional training materials and other items of interest. We hope that you'll take a moment to watch this new intro video and share it with others. Thanks as always for your daily reports and keeping an eye on the sky!"


  • 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 - OCTOBER 2011
    State
    Maximum Temperature
    Minimum
    Temperature
    Warmest
    Average
    Temperature
    Coldest
    Average
    Temperature
    Maximum
    Precipitation
    Minimum
    Precipitation
    Virginia
    86°
    Norfolk (ORF)
    26°
    Blacksburg
    Bridgewater
    62.2°
    Norfolk (ORF)
    52.2°
    Blacksburg
    8.48"
    Herndon
    1.42"
    Norfolk (FHC)
    North Carolina
    86°
    Fayetteville
    27°
    Asheville
    66.1°
    Cape Hatteras
    54.3°
    Asheville
    6.92"
    Cape Hatteras
    1.67"
    Whiteville
    South Carolina
    87
    Columbia
    Florence
    29°
    Greenville-Spartanburg
    64.3°
    Charleston
    59.6°
    Greenville-Spartanburg
    2.55"
    Greenville-Spartanburg
    1.52"
    Anderson


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


    TEMPERATURE / WINDS/ ELEMENTS

    VIRGINIA
    [Reminder: All NWS DATA HEREIN IS NOT OFFICIAL]
     
         STN  A      B    C     C1     D    E  F    G    H  I  J K K1  L  M      N   N1   N2   O P Q R R1 S    CWA 
         -------------------------------------------------------------------------------------------------------- 
         BCB 63.0  41.4  52.2   -0.1  77    18 26   30   0  0  6 0 76% 33 280  14   5.1       0 0 1 2  4 2400 AKQ 
         BRI 63.9  45.23 54.6   +0.5  76 10,17 26   30   0  0  2 0 67%                         0 0 0 0  0 0510/1600 LWX 
         CEN 63.5  46.4  55.0   -1.0  78    10 30   31   0  0  3 0 80% 29 314  27   1.7  315 2 0 0 0  0 2400 LWX 
         CHT 65.1  46.8  55.9   +0.3  78.8  10 29   31   0  0  1 0 80% 18 180  16   0.2  360 2 0 0 0  0 2400 LWX 
                                                                          142  20 
         CHO 67.5  46.1  56.8   +0.8  81    10 29   30   0  0  2 0     30 250  20   3.1       0 0 0 0  0 2400 LWX 
                                                                       30 260  27       
         DAN 68.7  43.3  56.0   -3.5  82    18 27   30   0  0  3 0 71% 37 230  19   5.0       2 0 0 0  1 2400 RNK 
         DCA 66.5  50.2  58.4   -1.1  83    10 34   29   0  0  0 0 70% 39 340  27   7.4       1 0 0 1  0 2400 LWX 
         IAD 64.9  45.2  55.1   -0.9  81    10 28   31   0  0  2 0 73% 36 320  27   5.9       2 0 0 1  0 2400 LWX 
         GAV 69.19 48.00 58.60        81 10,13 29   30   0  0  1 0 72% 34 203  20             1 0 0 1  0 2400 AKQ 
                                           18 
         HDV 65.3  46.5  55.9   -1.8  81  9,10 31 30,31  0  0  2 0 77% 22 225  20        023 1 0 0 1  0 2400 LWX 
         LYH 67.4  43.9  55.6   -0.6  80    18 27   30   0  0  3 0 71% 33 190  13   4.5       1 0 0 1  2 2400 RNK 
                                                                       33 230  19 
         NPN 69.7  50.0  59.1   -1.7  84.9  18 33.0 31   0  0  0 0     32 225  20   2.7  225 0 0 0 0  0 2400 AKQ 
         FHC 68.66 53.34 61.0   -1.1  82.6  18 38.2 30   0  0  0 0 72% 32 025  27   2.0  202 1 0 0 0  0 2400 AKQ 
         NOR 68.7  50.1  59.4   -1.5  83    18 35   31   0  0  0 0                             1 0 0 0  0 2400 AKQ 
         ORF 71.0  53.5  62.2   +0.1  86    18 38 30,31  0  0  0 0 68% 39 230  20   8.1       1 0 0 0  0 2400 AKQ 
         POR 68.8  50.9  59.9   -1.7  81 17,18 36.0 31   0  0  0 0 78% 32 225  20   3.3  045 1 0 0 0  0 2400 AKQ 
                                                                       32 270  29 
         CTR 68.2  46.1  56.0   -2.3  80.5  18 27.3 31   0  0  2 0 81% 17 248  27   0.1  088 0 0 0 0  0 2400 AKQ 
         MEC 68.36 48.96 58.86        79     4 30   30   0  0  1 0                             2 0 0 1  0 1700 AKQ 
         RIC 69.3  49.4  59.3   -0.4  82    17 31   31   0  0  1 0 68% 40 360  27   6.8       1 0 0 0  3 2400 AKQ 
         ROA 67.2  46.5  56.9   -0.8  81    17 31   30   0  0  1 0 65% 41 270  14   5.8       0 0 0 1  0 2400 AKQ 
                                                                       41 260  20 
         WAL 68.5  50.4  59.4   +0.3  79     9 31   31   0  0  1 0     38 040  29   7.8       0 0 0 0  0 2400 AKQ 
         WOO 61.8  47.6  54.7   -1.7  74    10 32 30,31  0  0  2 0                             0 0 0 0  2 2400 AKQ 
         WSH 63.4  46.8  55.1   -1.02 78.3  10 32.9 30   0  0  0 0 80% 18 135  15   0.2  248 7 0 0 0  0 2400 LWX 
                                                                       18 203   29                                 
    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 67.1  41.4  54.3  -2.1  81 16,17 27    30  0  0  4 0 67% 41 330 29    4.9      1 0 0 0  2 2400 GSP 
         MRH 72.3  56.0  64.1  -1.3  81    12 39    30  0  0  0 0     44 220 19    9.5      4 0 0 0  1 2400 MHX 
         CLT 71.5  46.1  58.8  -1.5  84    17 28    30  2  0  0 0 66% 36 200 19    6.2      0 0 0 0  0 2400 GSP 
         ECG 71.6  50.9  61.3  -1.1  84    17 32    30  1  0  0 0 71% 37 320 29    8.7      0 0 0 0  3 2400 AKQ 
         FAY 72.8  49.4  61.1  -2.4  86    17 33    30  8  0  0 0 64% 40 250 19    7.2      1 0 0 0  1 2400 RAH 
         GSO 68.6  47.1  57.9  -1.6  83    17 30    30  0  0  1 0 65% 41 210 19    6.7      1 0 0 0  1 2400 RAH 
         HSE 72.7  59.5  66.1  +0.3  82    18 45    30  0  0  0 0 70% 55 180 19    9.3      0 0 0 0  0 2400 MHX 
         HKY 69.8  46.1  58.0  -1.3  82    17 32    31  0  0  1 0     38 310 14    4.0      0 0 0 0  2 2400 GSP 
         LBT 73.4  48.0  60.7  -2.7  86    17 31    30  0  0  1 0 70% 38 250 19    5.5      0 0 0 0  2 2400 ILM 
         EWN 72.9  51.9  62.4  -1.7  85    17 37    30  0  0  0 0 71% 33 250 19    6.5      1 0 0 0  1 2400 MHX 
         MON 71.6  49.3  60.4  +0.1  85.4  17 27.7  30  0  0  2 0 80% 44 045 27    0.9 045 6 0 0 0  1 2400 RAH 
         RDU 70.8  47.6  59.2  -2.0  85    17 30    30  0  0  1 0 66% 35 260 19    5.6      0 0 0 0  0 2400 RAH 
         RAL 70.9  45.2  58.1  -1.9  85    17 29    30  0  0  2 0     27      14             0 0 0 0  0 2400(T)/1930(P) RAH 
         ROX 69.5  46.9  58.3  +0.2  85    17 30    30  0  0  2 0 69% 34 360 29        360 0 0 0 0  2 2200 RAH 
         WHI 72.5  49.6  61.1  -1.6  85.3  17 29.1  30  0  0  1 0 74% 26 260 27    2.7 139 0 0 0 0  5 2400 ILM 
         ILM 74.2  53.1  63.6  -1.6  86    17 34    30  0  0  0 0 70% 38 250 19    7.5      0 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 71.8  47.5  59.7  -1.6  85    16 31    30   0 0  1 0     36 270 14   6.0       0 0 0 0  0 2400 GSP 
                                                                      36 250 19 
         CAE 74.7  49.3  62.0  -2.1  87    17 32    30   0 0  1 0 63% 40 240 13   5.4       1 0 0 0  1 2400 CAE 
         CRE 74.0  52.6  63.3  -2.1  83    15 33    30   0 0  0 0 71% 38 220 19   7.1       0 0 0 0  4 2400 ILM 
         CHS 75.5  53.0  64.3  -2.6  84 15,17 39    30   0 0  0 0     38 100 10   7.3       0 0 0 0  2 2400 CHS 
         FLO 73.8  49.2  61.5  -2.8  87    17 31    30   0 0  1 0 66% 36 250 19   7.0       1 0 0 0  4 2400 ILM 
         GSP 71.2  48.0  59.6  -2.0  83    17 32    30   0 0  1 0 64% 38 230 19   6.4       0 0 0 0  0 2400 GSP 
         OGB 74.1  49.7  61.9  -3.3  85    17 34    30   0 0  0 0     35 270 19   5.0       0 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   S    CWA 
         ---------------------------------------------------------------------------------------------------------- 
         TRI 67.9  42.1  55.0  -1.3   83  7,18 27   30   0  0  4 0     38 220  20  4.1       1 0 0 0  5   2400 MRX 
         DAV             46    -2     74     9 26   29   0  0 10 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  2.94  +0.16  0.80 11  0.80    11 11 0 36.36    T 28,  3 0    T    T                             2400 
                                                              29,30 
         BRI  2.95  -0.13  1.06  2  1.27 12-13 11 1 42.05           1 1  3.5  3.5  30.49   9 29.19  20        0510/1600 
         CEN  6.92  +3.67  2.97 13  2.97    13 13 2 42.30  0.6 29   1 0  0.6  0.6  30.54   8 29.30  20 29.92  2400 
         CHT  6.49  +3.12  1.79 13             15 1 41.59    T      1      T    T  30.540  8 29.241 19 30.005 2400 
         CHO  5.32  +2.21  3.35 12  3.35    12 10 1 40.81                                    29.26  19        2400 
         DAN  3.45  -0.08  0.77 29  1.18 18-19 10 0 31.84                0.0  0.0  30.52   8 29.28  19        2400 
         DCA  3.91  +0.51  1.18 29  1.26 28-29 11 1 39.05    T 29   1 0    T    T            29.26  19        2400 
         IAD  6.27  +3.02  1.03 29  2.04 13-14 12 2 37.90  0.6 29   1 0  0.6  0.6            29.26  19        2400 
         GAV  3.32         1.17 29  1.25 28-29 10 2 38.43    T 29   1 0    T    T  30.54   8 29.30  19 30.02  2400 
         HDV  8.48  +4.65  3.76 13             13 2 48.52  0.5      1 0  0.5  0.5  30.52   8 29.23  19        2400 
         LYH  2.95  -0.16  1.33 12  1.46 11-12 10 1 31.10    T 28   1 0    T    T  30.54   8 29.29  19        2400 
         NPN  2.78  -1.57  1.25 19  1.29 18-19  7 1 53.25                0.0  0.0  30.51   8 29.28  19        2400 
         FHC  1.42  -2.00  0.55 19  0.56 18-19  6 0 33.79                0.0  0.0  30.488  8 29.285 19 29.998 2400 
         NOR  2.82  -0.76  0.77 19  0.92 18-19  9 0 48.42                0.0  0.0                             2400 
         ORF  2.13  -1.29  0.74 19  0.74    19  6 0 43.34                0.0  0.0  30.50   8 29.29  19        2400 
         POR  2.18  -1.44  0.70 19  0.71 18-19  9 0 46.95                0.0  0.0  30.50   8 29.30  19 30.014 2400 
         CTR  2.86  -0.57  0.95 29  1.17 28-29 11 0 41.05                0.0  0.0  30.51   8 29.26  19 29.993 2400 
         MEC  3.02         1.38 28  1.39 28-29  8 1 58.20                0.0  0.0  30.27   8 29.15  19 29.81  2400 
         RIC  2.79  -0.19  1.32 29  1.46 28-29  9 1 41.33                0.0  0.0  30.55   8 29.29  19        2400 
         ROA  4.06  +1.17  1.29 12  1.57 11-12  9 1 36.54   T 28,29 2 0    T    T  30.56   8 29.30  19        2400 
         WAL  3.59  +0.42  2.31 29  2.31    29  9 1 32.81                0.0  0.0  30.40  31 29.61  29        2400 
         WOO  3.25  +0.88           1.11   1-2 13 1 44.05 1.5  29   2 1  1.5  1.5  30.49   8 29.45  20        2400 
         WSH  6.42  +3.33  2.57 12  2.82 12-13 12 2 45.57 1.5       2 1  1.5  1.5  30.58   8 29.30  19        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  2.39  -0.52  0.92 11  1.04 18-19  8 0 35.61                 0.0  0.0  30.32  30 29.26  19         2400 
         MRH  6.41  +2.53  4.85 19  5.40 18-19  8 1 38.92                 0.0  0.0  30.44   8 29.34  19         2400 
         CLT  3.04  -0.36  1.03 18  1.36 18-19  7 1 37.77                 0.0  0.0  30.32  30 29.77  27         2400 
         ECG  2.08  +0.99  0.74 19  0.87 18-19  8 0 31.77                           30.49   8 29.31  19         2400 
         FAY  1.80  -1.41  0.57 31  0.57    31  8 0 31.59                      0.0            29.28  19         2400 
         GSO  4.28  +1.12  1.97 12  2.60 11-12  8 1 33.75                 0.0  0.0            29.28  19         2400 
         HSE  6.92  +1.54  4.49 19  4.87 18-19 11 2 54.07                 0.0  0.0  30.44   8 29.36  19         2400 
         HKY  2.48  -1.07  0.74 11  0.99 18-19  8 0 35.68                 0.0  0.0  30.48   8 29.24  19         2400 
         LBT  2.89  +0.32  1.07 12  1.07    12  8 1 37.40                 0.0  0.0  30.46   8 29.30  19         2400 
         EWN  2.02  -1.24  0.82 18  1.14 18-19  8 0 36.81                 0.0  0.0  30.47   8 29.33  19         2400 
         MON  3.49  +0.12  1.27 18  1.98 18-19 12 1 38.01                 0.0  0.0  30.522 31 29.506 27  30.014 2400 
         RDU  3.51  +0.26  1.04 18  1.88 18-19  7 1 38.33                 0.0  0.0            29.28  19         2400 
         RAL  3.73  +0.55           2.13 18-19  7 1 34.48                 0.0  0.0  30.53   8 29.35  19         0730 
         ROX  3.07  -0.59  1.32 19  1.32    19  8 0 36.09                 0.0  0.0  30.57   8 29.34  19  30.08  2200 
         WHI  1.67  -1.43  0.52 18  0.76 18-19  7 0 46.61                 0.0  0.0  30.452  8 29.323 19  30.030 2400 
         ILM  1.93  -1.96  0.75 19  1.19 18-19  7 0 40.40                 0.0  0.0  30.44   8 29.34  19         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  1.52  -1.59 0.41 18  0.72 18-19  8 0 29.00               0.0  0.0  30.45   8 29.36  19         2400 
         CAE  2.01  -1.16 1.17 18  1.52 18-19  8 1 34.11               0.0  0.0  30.44   8 29.34  19         2400 
         CRE  2.19  -1.69 0.79 11  1.17 18-19  6 0 29.55               0.0       30.42   8 29.35  19         2400 
         CHS  1.91  -1.84 0.74 18  0.95 18-19  8 0 34.96               0.0  0.0  30.38   8 29.38  19         2400 
         FLO  1.57  -1.51 0.65 31  0.65    31  8 0 26.03               0.0  0.0  30.45   8 29.31  19         2400 
         GSP  1.99  -1.45 0.50 11  0.73 18-19  8 0 37.21               0.0  0.0  30.47   8 29.30  19         2400 
         OGB  1.83  -1.56 0.77 18  0.77    18  7 0 34.07                         30.43   8 29.35  19         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  2.84  +0.74 0.81 19 0.89 28-29 10 0 38.98                  0.0   0.0  30.44  8 29.30  19        2400 
         DAV  6.8   +3.0  1.08 27            17 2 68.8    5.6 29  9  4  17.0  17.0     

    Virginia:

    Arlington - " MONTHLY TEMPERATURES IN OCTOBER WERE SLIGHTLY BELOW NORMAL FOR WASHINGTON DC. OCTOBER WAS THE FIRST MONTH SINCE MARCH 2011 WHERE TEMPERATURES AVERAGED BELOW NORMAL FOR THE MONTH. THREE DAILY RECORD LOW MAXIMUM TEMPERATURES WERE TIED OR BROKEN THIS MONTH. HIGH TEMPERATURES OF 52F ON THE 2ND AND 53F ON THE 3RD EACH TIED THEIR DAILY LOW MAXIMUM TEMPERATURE RECORDS LAST SET IN 1939 AND 1974...RESPECTIVELY. A MAXIMUM TEMPERATURE OF ONLY 42F ON THE 29TH BROKE THE PREVIOUS DAILY LOW MAXIMUM OF 44F SET IN 1925. THE MAXIMUM TEMPERATURE ON THE 29TH WAS ONLY THE SECOND TIME IN THE LAST 60 YEARS THAT THE DAILY MAXIMUM TEMPERATURE WAS THAT COLD IN OCTOBER (OTHER WAS 41F ON 30 OCTOBER 2002). PRECIPITATION FOR THE MONTH WAS SLIGHTLY ABOVE NORMAL. OCTOBER 2011 WAS THE THIRD STRAIGHT MONTH OF WETTER THAN NORMAL PRECIPITATION. NEARLY ONE-THIRD OF THE MONTHLY RAINFALL WAS RECORDED ON OCTOBER 29...WHEN A STRONG NOREASTER MOVED UP THE MID-ATLANTIC COAST. A TRACE OF SNOW AND SLEET WAS REPORTED ON THE 29TH...THAT TIED THE DAILY SNOWFALL RECORD SET LAST IN 1925. IT WAS THE FIRST TIME SINCE 1979 AND ONLY THE 11TH TIME ON RECORD THAT SNOW HAS BEEN RECORDED IN OCTOBER AT WASHINGTON DC (OFFICIAL SNOWFALL RECORDS BEGAN IN 1884). " - [ - + ] - Notes from NWS Sterling, VA

    Bridgewater - " The temperature and precipitation for the month was slightly below normal. The precipitation for the year is now 9 inches above normal. Last year at this time the precipitation was 7 inches below normal. The biggest event for the month was the 3.5 inches of snow on the 28th. This was the first October measurable snow since 1979 when 7 inches of snow fell on the 10th. This was only the 2nd October snow in at least 45 years. " - [ +  -] - notes from Clayton

    Centreville - " Yea! Snow in sunny Centreville on the 29th. Global warming is over; the big freeze is here. (sure, sure...) " - [ - +] - Paul's humour, as always and appreciated!!

    Chantilly - Russ adds these notes: " For the second month in a row, we had abnormally high rainfall totals (6.49"). Temperatures failed to reach 80. The mean monthly temperature of 55.9 was slightly above normal, once again due to elevated low mean temps. The mean high temperature was 65.1 (-2.6) and the mean low temperature was 46.8(+4.2). A record low high temp was set on the 2nd (51.3), 3rd (52.3), and 29th (39.8). A record high low temp was set on the 19th (60.5). Precipitation was 3.12" above normal, with new record precipitation amounts on the 13th (1.79") and 29th (0.95"). Thunderstorms rolled through on the 13th and 14th, with a tornado warning issued on the 13th. *Please note, anemometer is currently partially obstructed from the North and East " - [ + + ]

    Dulles - from NWS Sterling (KLWX): " MONTHLY TEMPERATURES IN OCTOBER WERE NEAR NORMAL FOR DULLES. THE LOWEST MINIMUM TEMPERATURE THIS OCTOBER WAS 28F ON THE 31ST...WHICH WAS THE COLDEST OCTOBER READING SINCE IT WAS ALSO 28F ON 30 OCTOBER 2008. TWO DAILY RECORD LOW MAXIMUM TEMPERATURES AND ONE RECORD HIGH MINIMUM TEMPERATURE WERE BROKEN THIS MONTH. A MINIMUM TEMPERATURE OF 60F ON THE 19TH BROKE THE PREVIOUS DAILY HIGH MINIMUM TEMPERATURE RECORD OF 57F SET IN 1968. A MAXIMUM TEMPERATURE OF 50F ON THE 2ND BROKE THE PREVIOUS DAILY LOW MAXIMUM RECORD OF 54F SET IN 1974. ALSO...A MAXIMUM TEMPERATURE OF ONLY 39F ON THE 29TH BROKE THE PREVIOUS DAILY LOW MAXIMUM TEMPERATURE RECORD OF 47F SET IN 1965. THE MAXIMUM TEMPERATURE ON THE 29TH TIED 30 OCTOBER 2002 FOR THE LOWEST MAXIMUM TEMPERATURE ON RECORD FOR THE MONTH OF OCTOBER AND MARKED THE EARLIEST IN THE SEASON THAT THE HIGH TEMPERATURE FAILED TO REACH 40F. OCTOBER PRECIPITATION WAS WELL ABOVE NORMAL FOR THE SECOND MONTH IN A ROW. THE 6.27 INCHES OF PRECIPITATION THIS OCTOBER RANKED AS THE 7TH WETTEST OCTOBER ON RECORD AND THE WETTEST OCTOBER SINCE 2005 (THE 9.22 INCHES IN OCTOBER 2005 WAS THE WETTEST OCTOBER ON RECORD). A TOTAL OF 14.2 INCHES WAS RECORDED AT DULLES DURING THE TWO-MONTH PERIOD OF SEPTEMBER-OCTOBER 2011...THAT WAS THE SECOND WETTEST ON RECORD FOR THAT PERIOD. ONLY THE 16.23 INCHES OF RAIN DURING THE SEPTEMBER-OCTOBER PERIOD OF 1979 WAS WETTER (WHICH WAS ALSO THE LAST TIME DULLES RECORDED SNOW IN OCTOBER). TWO DAILY PRECIPITATION RECORDS WERE BROKEN AT DULLES. THE 1.92 INCHES ON THE 13TH SURPASSED THE DAILY MAX PRECIPITATION RECORD OF 0.85 INCHES IN 1983 WHILE THE 1.03 INCHES ON THE 29TH BROKE THE PREVIOUS RECORD OF 0.84 INCHES IN 1973. DULLES RECEIVED 0.6 INCHES OF SNOW AND SLEET ON THE 29TH....WHICH SET A NEW DAILY SNOWFALL RECORD FOR OCTOBER 29 SINCE DULLES HAD NEVER RECORDED SNOW PREVIOUSLY ON THIS DATE. MEASURABLE SNOWFALL HAS ONLY BEEN REPORTED DURING TWO OTHER OCTOBERS SINCE OFFICIAL SNOWFALL RECORDS BEGAN IN 1962 (0.1 INCHES ON 19 OCT 1972 AND 1.3 INCHES ON 10 OCT 1979). " - [ - + ]

    Glen Allen - Lowell sends these notes: " There were two main events in October both of which had little effect on the West Henrico Co. - Glen Allen area. The thunderstorms on October 13th produced three tornadoes in Quantico in Prince William County, in Boswell Tavern in Louisa County, and the Woodhaven Shores area in New Kent County, VA. The storm gave this station only 0.46 inches of rain and one very close lightning strike. On the 29th a strong storm system moving up the East Coast (affecting ten states) dumped more than two feet of snow in NH and left more than 3 million homes and businesses without power and caused at least twenty deaths. We only had a trace of sleet mixed with rain around 1600 on the 29th. October was cooler and drier than average at the Glen Allen Station when compared to the Ashland Station. The monthly mean temperature was 58.6F, a -0.8F departure when compared to the Ashland, VA average. The 3.32 inches of precipitation for October at Glen Allen was a -0.15 inch departure when compared to the Ashland, VA average. The maximum temperature for October was 81F and the lowest minimum temperature was 29F recorded on October 30. The cold was really felt as it was near 80F on the 25th. There were two frosts in October and both were heavy and killing on the 30th and 31st. The Richmond database recorded three records this month. The low maximum temperature of 45F recorded on the 29th as a record low maximum for the date; previous record was 46F in 1925. On October 12th the minimum temperature tied the previous record of 65F set in 1983. The maximum on the 12th was 68F giving a daily temperature range of 3 the lowest range ever recorded on that date. The previous record was 8F set in 1985 and 1942. It was the 58th warmest and the 59th wettest October in the Richmond records. The highest dew point temperature for October was 72F on the 13th at 1430 that made it feel like a summer's day. The lowest dew point was 26.1F on the 30th at 1536. The maximum wind gust was 34 mph from the SSW that occurred on the 20th at 1057 preceding a cold front. "

    Herndon - Randy sends these notes: " October was below normal for temperature, for the third consecutive month; but again well above normal for precipitation. The temperatures ranged between a high of 81 and a low of 31; with the first freeze occurring on the 30th. On the precipitation side, the month was 4.65" above normal with 8.48" measured. More than one half of this came during the 12th thru 14th when a series of very heavy, severe storms moved through the area. On the evening of the 13th, a "train" of extremely strong storms moved from the south to the north through western Fairfax County. Rainfall rates exceeded 5"/hr and peaked at 10.87"/hr at one time. The rain was so intense that the storm drain next to my house could not handle the flow and overflowed into my and my neighbor's backyard, flooding their basement (See attached photos with clicks here: Pic 1 and Pic 2. We received 3.76" of rain in a little over 2 hours. We also had the first snow of the year and the first that I have ever measured in October since starting measurements in measurements in 1992. It started as sleet and ended as snow and received about 0.5". For the year, we are now over 8.5" above normal for precipitation. " - [ - + ]

    Portsmouth - " October's average temperature (59.9) was 1.7 BELOW NORMAL. Rainfall was BELOW NORMAL by 1.44" and was 60% of normal relative to normal Octobers for the period from 1976 to 2010. Cold frontal passages occurred on the 14th, 20th, 25th, 27th, and 29th, STATION RECORDS: 2nd - TEMPERATURE Minimum Maximum 58 [previous 60 1984] and 3rd - TEMPERATURE Minimum Maximum 60 [previous 64 1981]. " - [ - - ] 

    Woodstock - Bob adds these notes: " Precipitation this month was the greatest I have recorded in 26 years of record keeping. About an inch and a half more than in September 2004, my previous high. " - [ - + ]

    North Carolina:

    Greensboro - NWS RAH notes: " THE HIGH TEMPERATURE ON OCTOBER 1 AT THE PIEDMONT TRIAD INTERANTIONAL AIRPORT WAS 60 DEGREES. THIS TIES THE RECORD LOW MAXIMUM LAST SET IN 1996. THE HIGH TEMPERATURE ON OCTOBER 17 AT THE PIEDMONT TRIAD INTERNATIONAL AIRPORT WAS 83 DEGRESS. THIS TIES THE RECORD HIGH TEMPERATURE LAST SET IN 2007. " - [ - + ] 

    Raleigh - NWS RAH notes: " THE LOW TEMPERATURE OCTOBER 13 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 66 DEGREES. THIS TIES THE RECORD HIGH MINIMUM TEMPERATURE LAST SET IN 1990. THE HIGH TEMPERATURE OCTOBER 17 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 85 DEGREES. THIS BREAKS THE OLD RECORD HIGH TEMPERATURE OF 84 DEGREES SET IN 2007. THE DAILY RAINFALL OCTOBER 19 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 1.04 INCHES. THIS BREAKS THE OLD DAILY RAINFALL RECORD OF 0.94 SET IN 1989. THE DAILY RAINFALL OCTOBER 29 AT RALEIGH-DURHAM INTERNATIONAL AIRPORT WAS 0.87 INCHES. THIS BREAKS THE OLD DAILY RAINFALL RECORD OF 0.66 SET IN 2003. " - [ - + ]

    Raleigh - Bob notes: " COOLER THAN NORMAL FALL WEATHER CONTINUED DURING OCTOBER WITH THE AVERAGE DAILY TEMPERATURE 1.9 DEGREES BELOW NORMAL THE HIGH ON OCTOBER 29TH WAS ONLY 53 DEGREES WHICH IS THE NORMAL HIGH TEMPERATURE FOR EARLY FEBRUARY. RAINFALL WAS ALSO ABOVE NORMAL AND THE YEAR TO DATE DEFICIT IS NOW ONLY 2.47". NO SEVERE WEATHER DURING OCTOBER, IN FACT THERE WERE NO THUNDERSTORMS WERE OBSERVED AT THIS STATION. " - [ - + ]

    Moncure - Mac send these additional notes: " 30YR DATA BASED ON 30YR CLIMATOLOGICAL DATA, SANFORD 8 NE, NC. STATION #317656, CLIMATE DIV 4 " - [ + + ]

    Nearby Cities:

    Tri-cities, TN - from NWS MHX, Morristown, TN: " Tri-Cities received 2.84 inches of rain in October, which was 0.74 inches above normal. It ranked as the 20th wettest October on record. Measurable rain occurred on 10 days and four of those days had more than one-quarter of an inch of precipitation. The heaviest rain fell on the 28th when 0.75 inches of rain was reported. In addition an old daily rainfall record was broken on the 11th when 0.48 inches of precipitation was received breaking the previous record of 0.44 inches set in 1983. The wettest October of the 73 years of observations taken at Tri-Cities was in 1959 when 5.65 inches of rain was recorded. The monthly-averaged temperature at Tri-Cities in October was 55.0 degrees which was 1.3 degrees below normal. It tied with 1966 as the 18th coolest October on record. The coolest October at Tri-Cities was back in 1988 when the average temperature was 50.2 degrees. " - [ -  + ]

    Davis, WV - from Dave Lesher's website: " October 2011 had a mean temperature of 46 and that was BELOW NORMAL (-2). The month's rainfall total of 6.8 inches was 3.0" ABOVE NORMAL. Rainfall for the year of 68.8" was 21.4" ABOVE NORMAL. Snowfall for the month was 17.0"and that is 15.0" above normal for October ; seasonal snowfall is 17.0" and that is also 15" above normal. " - [ -  + ]



    COLUMN DENOTATIONS:

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



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

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

         National Weather Service Homepages

         National Climatic Data Center, Asheville, NC

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

       Coast Guard Air Station 36-15-47N 076 10-58W 11M
    AKQ    Wakefield, VA NWS Wakefield Municipal Airport 36-58-53N 077-00-04W 33M  
    DCA    Arlington, VA Washington, DC, Reagan Washington National Airport 38-50-54N 077-02-03W 18M WSH   Washington, VA  David Yowell runamok@runamok.com
    BCB    Blacksburg, VA NWS Virginia Tech Airport 37-13N 080-25W   
      WOO  Woodstock, VA 5NW Lauck Walton 12/1/85 jwalton@shentel.net
       LDY Ladysmith, VA Danny Jessee 2003 STATION CLOSED 8/31/2010 danny@dannyjessee.com
    BRI     Bridgewater, VA Clayton Towers Ctowers19@aol.com WAL   Wallops Island, VA 37 56'26" N 75 27'47" W Wallops Flight Facility Airport
    CEN  Centreville, VA Paul Bassett 1985, 38 50.9788' N LAT. 77 25.6374' W LON. | Elevation 324' | m.psb@verizon.net AVL    Asheville, NC  Asheville Regional Airport 35-25-55N 082-32-15W 670M
    CHO   Charlottesville, VA  Charlottesville-Albemarle Airport ASOS  (Rappahannock County) 38-08-18N 078-27-21W 192M MRH    Beaufort, NC  Michael J. Field Airport 34-44-01N 076-39-38W 3M
    DAN  Danville, VA, Danville Regional Airport, 36-34-22N 079-20 10W 175M  CLT    Charlotte, NC NWS Charlotte/Douglas International Airport 35-12-48N 080-56-55W 220M
    IAD   Dulles - Washington-Dulles International Airport  38-56-05N 077-26-51W 93M   
    FCH    Falls Church, VA Erica Page 3/7/94 Windie1970@aol.com HKY  Hickory, NC 
    HAM    Hampton, VA 5NE Dave Kessel 1989 davidkessel@cox.net ECG  Elizabeth City, NC, 
    LYH     Lynchburg, VA NWS Lynchburg Regional Airport 37-19-15N 079-12-24W 295M ILM     Wilmington, NC NWS New Hanover International Airport 34-16-06N 077-54-22W 9M
    CTR  Winterpock in Chesterfield County, VA Albert Arnold 06/03 FAY  Fayetteville, NC Fayetteville Regional Airport, 34-59-22N 078-52-48W 55M
      GSO   Greensboro, NC NWS Piedmont Triad International Airport 36-05-51N 079-56-37W 275M
    CHT   Chantilly, VA Russ Topping -  12/2006  russ.topping@gmail.com - new location December 2006 HSE    Cape Hatteras, NC  Mitchell Field 35-13-56N 075-27-21W 3M
    HDV    Herndon, VA  Randoplh W. Ashby, 3.3 SM South, Lat: 38.922127, Lon: -77.38015, Elev: 390'. Randolph_Ashby@Raytheon.com LBT    Lumberton, NC  Lumberton Municipal Airport 34-36-26N 079-03-36W 37M
    GAV - Glen Allen, Henrico County, VA - Lowell Koontz  8/1/08  wwkoontz@verizon.net EWN    New Bern, NC  Craven County Regional Airport 36-04-03N 077-02-50W 3M
      MON    Moncure, NC  Chatham County - Mac McIlwain mac.mcilwain@embarqmail.com
      RAL    Raleigh, NC 7NNW  Bob Woodson -  6/1/93 kf4mmm@qsl.net
    LKU     Louisa, VA 1N Joseph Bowers 1944 - NWS ID  44-5050-02 STATION CLOSED RDU   Raleigh-Durham, NC Raleigh-Durham International Airport 35-52-14N 078-47-11W 130M
    LOU     Louisa, VA 6S John Bullock (about 1970) STATION CLOSED ROX    Roxboro, NC 2SE Merriell A. Jay 1/93
         WHI   North Whiteville, NC Christopher Crawley 12/10 34.413744N / 078.751908W
    LYH     Lynchburg, VA NWS Lynchburg Regional Airport 37-19-15N 079-12-24W 295M ILM     Wilmington, NC NWS New Hanover International Airport 34-16-06N 077-54-22W 9M
    NEW    Newmarket, VA 2W Joyce Winfree STATION CLOSED 5/31/10 joywood@shentel.net CHS   Charleston, SC NWS Charleston Air Force Base 32-53-56N 080-02-26W 13M
    NPN     Newport News, VA 7N Gary Leonard -  6/91 GaryMLeonard@aol.com CAE    Columbia, SC NWS Columbia Metropolitan Airport 33-56-31N 081-07-05W 73M 
    NOR     Norfolk, VA 3NE Jim Fentress 6/1/77 FLO    Florence, SC Florence Regional Airport 34-11-16N 079-43-51W 44M
    ORF     Norfolk, VA 5NE 36-54-13N 076-11-31W 14M  1871 GSP   Greenville-Spartanburg, SC NWS Greenville-Spartanburg Airport 34-53-02N 082-13-15W 286M 
    POR     Portsmouth, VA 36.81° North 76.33° West 3S Bill Trotter -  7/1/76 wxr@cox.net CRE    North Myrtle Beach, SC Grand Strand Airport 33-48-42N 078-43-26W 10M
    MEC     Mechanicsville, VA Glen Martin 11/19/91 OGB   Orangeburg, SC  Orangeburg Municipal Airport 33-27-50N 080-51-13W 59M
    FHC    Norfolk, VA  Fred Heutte Center 36° 54'N 76° 16'W 01/01/03 fhcgarden@cox.net AND   Anderson, SC 
    RIC     Richmond, VA Richmond International Airport 37-30-40N 077-19-24W 50M TRI     Tri-cities, TN  (Bristol / Johnson / Kingsport), Tri-City Regional Airport 36-28-47N 082-23-56W 474M 
    ROA    Roanoke, VA Roanoke Regional Airport 37-19-01N 079-58-27W 362M DAV  Davis, WV Dave Lesher canaanwx@canaantv.tv