http://www.genserva.com/acon
SUMMARY OF CLIMATOLOGICAL DATA
SUMMARY OF CLIMATOLOGICAL DATA
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 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!!
|
|
|
Temperature |
Average Temperature |
Average Temperature |
Precipitation |
Precipitation |
|
|
Norfolk (ORF) |
Blacksburg |
Norfolk (ORF) |
Blacksburg |
Arlington |
Wallops Island |
|
|
New Bern Wilmington Whiteville |
Asheville |
Cape Hatteras |
Asheville |
Asheville |
Wilmington |
|
|
Charleston Orangeburg |
Anderson |
Charleston |
Greenville-Spartanburg |
Greenville-Spartanburg |
North Myrtle Beach |
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 50.5 28.3 39.4 +5.6 65 15 14 11 0 0 23 0 78% 40 290° 28 4.0 0 0 0 1 2 2400 AKQ
BRI 49.68 31.10 40.39 +4.09 62 5 18 12 0 0 18 0 67% 0 0 0 0 0 0510/1600 LWX
CEN 50.7 33.2 42.0 +5.4 62 15,16 22 11,12 0 0 17 0 69% 44 301° 7 2.6 225° 0 0 0 0 1 2400 LWX
CHT 52.0 32.7 42.4 +6.5 62.4 31 20.7 12 0 0 18 0 75% 16 180° 15 0.5 180° 0 0 0 1 0 2400 LWX
CHO 54.2 32.2 43.2 +5.4 65 15,16 20 11,12 0 0 17 0 25 300° 7,15 3.4 0 0 0 0 1 2400 LWX
DAN 55.9 32.8 44.4 +4.3 67 6,15 23 19,29 0 0 19 0 70% 37 280° 7 4.5 0 0 0 0 0 2400 RNK
DCA 52.6 37.4 45.0 +5.3 63 15 29 12,19 0 0 7 0 65% 41 330° 7 6.9 0 0 0 0 0 2400 LWX
IAD 51.5 31.4 41.4 +4.8 62 15,16 19 12 0 0 20 0 69% 41 280° 8 5.9 0 0 0 0 1 2400 LWX
GAV 56.81 35.10 45.95 +6.1 69 5,7 25 11,12, 0 0 15 0 69% 33 338° 7 1 0 0 0 2 2400 AKQ
29
HDV 52.3 33.3 42.8 +4.8 62 6,7, 22 11 0 0 19 0 73% 19 225° 15,21 180° 0 0 0 0 0 2400 LWX
15
LYH 54.2 31.4 42.8 +5.2 64 15,22 21 19 0 0 19 0 67% 33 200° 23 3.9 0 0 0 0 1 2400 RNK
NPN 57.3 36.1 47.3 +4.7 72.1 7 24.3 29 0 0 10 0 38 250° 7 2.5 340° 0 0 0 0 0 2400 AKQ
FHC 56.50 41.10 48.8 +4.7 72.3 7 31.2 19, 0 0 3 0 69% 45 248° 7 3.0 202° 0 0 0 0 2 2400 AKQ
29
NOR 57.0 37.5 47.3 +3.9 73 7 26 19 0 0 8 0 0 0 0 0 0 2400 AKQ
ORF 59.2 41.5 50.3 +6.2 76 7 28 29 0 0 4 0 66% 44 210° 7 8.5 0 0 0 0 2 2400 AKQ
POR 56.7 39.1 47.9 +3.7 73.2 7 28.4 19 0 0 5 0 77% 54 270° 7 4.3 263° 0 0 0 0 2 2400 AKQ
38 360° 23
CTR 56.7 32.6 44.5 +4.1 70.9 7 22.2 11 0 0 21 0 76% 22 293° 7 0.8 227° 0 0 0 0 1 2400 AKQ
MEC 55.83 35.61 45.97 72 7 25 12,29 0 0 14 0 0 0 0 0 1 1700 AKQ
RIC 57.1 35.5 46.3 +5.3 72 7 25 29 0 0 14 0 65% 64 310° 7 6.6 0 0 0 0 2 2400 AKQ
ROA 54.2 33.7 43.9 +4.9 65 15 21 11 0 0 17 0 63% 41 320° 28 5.2 0 0 0 0 0 2400 AKQ
WAL 55.5 35.6 45.5 +5.0 66 6 24 19 0 0 15 0 50 200° 27 7.9 0 0 0 0 2 2400 AKQ
WOO 51.2 35.6 43.4 +4.0 66 6 23 11 0 0 13 0 0 0 0 0 2 2400 AKQ
WSH 50.8 34.1 42.7 +5.78 64 15 23 11 0 0 15 0 71% 21 180° 15 0.5 023° 0 0 0 0 0 2400 LWX |
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 54.7 33.9 44.3 +4.9 66 14 21 11 0 0 17 0 69% 41 330° 7 6.3 1 0 0 2 2 2400 GSP
MRH 61.8 43.6 52.7 +4.3 73 6 28 18 0 0 4 0 44 250° 7 7.9 0 0 0 0 0 2400 MHX
CLT 58.8 37.0 47.9 +5.5 69 6 25 2,29 0 0 12 0 65% 41 250° 27 5.8 0 0 0 0 2 2400 GSP
ECG 60.1 38.2 49.2 +4.8 75 7 25 19 0 0 8 0 71% 40 250° 7 8.0 0 0 0 0 1 2400 AKQ
FAY 62.5 38.5 50.5 +5.1 76 7 27 19 0 0 6 0 65% 48 220° 7 6.8 0 0 0 0 1 2400 RAH
GSO 56.6 36.8 46.7 +5.4 66 6,15 26 18.19 0 0 11 0 65% 47 260° 7 6.5 0 0 0 0 0 2400 RAH
HSE 60.9 47.8 54.3 +5.0 72 5 30 19 0 0 1 0 73% 48 270° 27 7.8 0 0 0 0 1 2400 MHX
HKY 56.8 36.0 46.4 +5.3 67 15 25 11 0 0 14 0 32 200° 22 3.5 1 0 0 0 7 2400 GSP
LBT 62.5 39.2 50.8 +4.6 76 7,22 27 19,29 0 0 10 0 70% 46 260° 7 5.4 0 0 0 0 3 2400 ILM
EWN 62.7 38.9 50.8 +4.0 78 22 25 19 0 0 7 0 71% 43 200° 7 5.9 0 0 0 0 7 2400 MHX
MON 2400 RAH
RDU 59.4 37.6 48.5 +5.0 72 6 26 29 0 0 11 0 71% 44 230° 27 5.2 0 0 0 0 0 2400 RAH
RAL 59.7 35.1 47.4 +4.4 71 5 25 2,18, 0 0 14 0 28 27 0 0 0 0 0 2400(T)/1930(P) RAH
19,29
ROX 56.8 36.2 46.8 +3.9 38 5,6 24 11,12 0 0 13 0 73% 37 180° 27 180° 0 0 0 0 0 2200 RAH
15
WHI 63.4 38.3 50.8 +5.7 77.9 22 25.7 19 0 0 8 0 74% 31 242° 7 2.9 138° 0 0 0 0 0 2400 ILM
ILM 64.8 40.5 52.7 +4.1 78 22 28 19 0 0 4 0 72% 49 220° 27 6.6 0 0 0 0 1 2400 ILM |
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 59.5 38.1 48.8 +5.1 73 16 24 29 0 0 9 0 44 240° 7 4.7 0 0 0 0 5 2400 GSP
CAE 64.4 38.7 51.5 +4.8 77 6,16 27 29 0 0 9 0 67% 43 270° 7 4.4 0 0 0 0 4 2400 CAE
CRE 63.4 41.1 52.3 +3.5 76 16 30 19,29 0 0 5 0 72% 46 210° 27 6.1 0 0 0 0 3 2400 ILM
CHS 66.9 42.9 54.9 +4.1 79 22 31 2,19 0 0 3 0 52 270° 7 6.7 0 0 0 0 2 2400 CHS
FLO 64.5 39.5 52.0 +4.9 78 22 28 19,29 0 0 5 0 67% 44 250° 7 6.0 0 0 0 0 4 2400 ILM
GSP 58.3 38.9 48.6 +4.6 69 16 25 29 0 0 9 0 69% 40 230° 27 5.3 1 0 0 0 7 2400 GSP
OGB 65.4 39.7 52.5 +4.6 79 22 28 19,29 0 0 8 0 48 270° 7 4.6 0 0 0 0 4 2400 CAE |
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 54.2 31.4 42.8 +5.0 67 5 21 18 11 0 18 0 45 240° 27 3.1 0 0 0 0 8 2400 MRX
DAV 40.16 25.55 32.85 58 5 9 11 0 9 24 0 0700 PBZ |
STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 S
---------------------------------------------------------------------------------------------------------
BCB 3.62 +0.67 1.45 7 1.45 7 9 1 43.68 T 7,8 6 1 T T 2400
18,24,27,28
BRI 3.82 +1.09 2.01 7 2.22 6-7 6 1 49.68 0 0 0.0 3.5 30.30 23 29.48 28 0510/1600
CEN 4.56 +1.60 2.52 7 2.52 7 6 48.83 T 29 1 0 T 0.6 30.67 11 29.43 27 30.05 2400
CHT 4.53 +1.46 2.14 7 2.14 7 9 2 48.37 0 0 0.0 T 30.697 11 29.424 27 30.188 2400
CHO 4.36 +1.21 1.98 7 1.98 6-7 8 1 48.31 30.69 11 29.45 27 2400
DAN 2.19 -1.08 0.72 7 0.72 7 6 0 39.01 0 0 0.0 0.0 30.68 11 29.47 7 2400
DCA 4.90 -1.85 3.10 7 3.10 7 7 1 45.89 T 7,17 2 0 T T 29.43 27 2400
IAD 4.46 -1.50 2.14 7 2.14 7 6 2 44.54 T 29 1 0 T 0.6 29.43 7 2400
GAV 3.21 -1.56 1.65 7 1.65 7 8 1 45.14 0 0 0.0 T 30.69 11 29.44 7, 30.18 2400
27
HDV 4.74 +1.47 2.58 7 8 1 55.53 1 0 T 0.5 30.54 6 29.60 23 2400
LYH 4.61 +1.37 1.80 7 2.06 7-8 8 1 38.98 0 0 0.0 T 30.70 11 29.47 7 2400
NPN 1.93 -1.85 0.49 27 0.49 27 6 0 58.50 0 0 0.0 0.0 30.67 11 29.45 7 2400
FHC 1.38 -1.88 0.47 27 0.47 27 6 0 37.10 0 0 0.0 0.0 30.623 11 29.458 7 30.187 2400
NOR 1.73 -1.65 0.55 21 0.55 21 7 0 52.32 0 0 0.0 0.0 2400
ORF 1.56 -1.70 0.52 21 0.53 20-21 8 0 46.74 0 0 0.0 0.0 30.64 11 29.46 7 2400
POR 1.86 -1.36 0.60 21 0.60 21 7 0 51.12 0 0 0.0 0.0 30.65 11 29.49 7 30.207 2400
CTR 2.21 -1.88 0.83 7 0.84 7-8 10 0 47.42 0 0 0.0 0.0 30.67 11 29.40 7 30.175 2400
MEC 2.30 1.03 8 1.17 7-8 6 1 64.33 0 0 0.0 0.0 30.42 3, 29.26 26 29.84 2400
11
RIC 2.03 -1.23 0.78 7 0.78 7 6 0 47.54 0 0 0.0 0.0 30.70 11 29.44 7 2400
ROA 4.19 +1.25 1.70 7 1.80 6-7 9 2 45.03 0 0 T T 30.70 11 29.52 27 2400
WAL 1.12 -2.31 0.48 27 0.48 26-27 6 0 36.23 0 0 0.0 0.0 30.47 24 29.17 27 2400
WOO 3.41 +0.68 1.71 7-8 8 1 50.84 0 0 0.0 2.0 30.54 3 29.72 28 2400
WSH 3.61 +0.11 1.92 7 1.92 7 8 1 51.38 T 7,18, 4 0 T 1.5 30.74 11 29.49 27 2400
28,29 |
STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 S
----------------------------------------------------------------------------------------------------------
AVL 5.11 +1.52 1.64 22 1.70 22-23 10 1 46.04 T 7,8, 4 0 T T 30.59 3 29.58 27 2400
27,28
MRH 1.24 -2.28 1.11 27 1.11 27 6 1 42.52 0.0 0.0 30.57 11 29.64 27 2400
CLT 3.41 +0.16 1.28 21 1.32 20-21 7 1 44.52 0.0 0.0 30.62 11 29.55 7 2400
ECG 0.94 -1.62 0.36 27 0.36 27 7 0 34.43 30.62 11 29.54 27 2400
FAY 0.70 +1.95 0.50 27 0.50 27 4 0 35.58 0.0 0.0 29.50 7 2400
GSO 3.02 +0.04 0.91 21 0.90 20-21 6 0 43.55 0.0 0.0 29.50 7 2400
HSE 3.16 -1.11 2.20 27 2.20 27 8 1 63.31 0.0 0.0 30.57 3 29.60 27 2400
HKY 3.66 -0.04 1.12 27 1.12 27 8 1 43.99 0.0 0.0 30.59 11 29.52 7 2400
LBT 0.79 -2.10 0.59 27 0.59 27 3 0 41.33 30.58 11 29.55 7 2400
EWN 0.73 -2.67 0.40 27 0.40 27 6 0 38.89 0.0 0.0 30.61 11 29.61 27 2400
MON [through October 2011]=> 38.01 0.0 0.0 2400
RDU 2.05 -1.02 0.56 27 0.62 16-17 6 0 43.70 0.0 0.0 29.50 7 2400
RAL 2.33 -0.71 0.65 27-28 7 2 40.38 0.0 0.0 30.60 3 29.50 7 0730
ROX 2.98 -0.38 0.75 7 0.75 7 7 0 43.98 0.0 0.0 30.70 11 29.56 7,27 30.25 2200
WHI 0.62 -2.42 0.39 27 0.39 27 5 0 51.15 0.0 0.0 30.576 3 29.585 7 30.219 2400
ILM 0.59 -3.03 0.50 27 0.50 27 5 0 43.96 0.0 0.0 30.56 3 29.64 27 2400 |
STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 S
-------------------------------------------------------------------------------------------------------
AND 3.51 -0.60 1.32 27 1.32 27 8 1 35.89 0.0 0.0 30.57 11 29.68 7 2400
CAE 1.11 -2.11 0.76 27 0.76 27 4 0 37.90 0.0 0.0 30.56 11 29.64 7 2400
CRE 0.48 -2.98 0.17 28 0.17 28 5 0 32.93 30.55 3 29.65 7 2400
CHS 0.65 -2.46 0.29 27 0.29 27 6 0 37.01 0.0 0.0 30.52 3 29.70 7 2400
FLO 1.25 -1.76 0.91 27 0.91 27 4 0 28.46 0.0 0.0 30.55 3 29.65 7 2400
GSP 3.96 -0.15 1.29 27 1.29 27 9 1 45.56 0.0 0.0 30.58 11 29.62 7 2400
OGB 1.90 -1.42 1.44 27 1.44 27 6 1 37.47 30.55 11 29.68 7 2400
|
STN T T1 U U1 V V1 W X Y Z 1 2 3 4 5 6 6A 7 7A 8 S
--------------------------------------------------------------------------------------------------------
TRI 4.10 +0.73 1.46 7 1.72 6-7 10 1 47.68 T 7,8 2 0 T T 30.57 11 29.56 27 2400
DAV 4.84 1.62 10 14 1 78.84 10.1 10 12 3 16.4 40.5
|
Virginia:
Arlington - " OVERALL...TEMPERATURES THIS DECEMBER WERE WELL ABOVE NORMAL...AND MORE REPRESENTATIVE OF THE WASHINGTON DC CLIMATE FOR LATE NOVEMBER OR EARLY MARCH. THE AVERAGE MONTHLY TEMPERATURE OF 45.0 F WAS TIED WITH 1923 FOR THE 6TH WARMEST DECEMBER ON RECORD FOR WASHINGTON... AND WAS THE WARMEST DECEMBER SINCE 2001 WHEN IT WAS 45.5 F. COLD AIR REMAINED WELL NORTH THIS DECEMBER...SPARING THE WASHINGTON DC AREA FROM EXPERIENCING WINTER-LIKE COLD. THE MAX TEMPERATURE AT REAGAN NATIONAL AIRPORT...DCA...WAS NEVER LOWER THAN 43 F ON ANY DAY THIS MONTH. DECEMBER 2011 WAS THE FIRST DECEMBER ON RECORD THAT DAILY MAX TEMPERATURES NEVER DROPPED BELOW THE 40-DEGREE MARK. THE MIN TEMPERATURE DID NOT DROP BELOW 29 F ON ANY DAY THIS DECEMBER...WHICH IS THE FIRST TIME ON RECORD IN DECEMBER. THE MIN TEMPERATURE AT DCA FAILED TO REACH THE FREEZING MARK ON ALL BUT SEVEN TIMES THIS MONTH...WHICH WAS TIED WITH FOUR OTHER DECEMBERS...1972...1974...1984...2007 FOR THE LEAST NUMBER OF FREEZING DAYS IN DECEMBER. ONE DAILY TEMPERATURE RECORD WAS BROKEN IN WASHINGTON IN DECEMBER. A MIN TEMPERATURE OF 55 F ON THE 6TH BROKE THE PREVIOUS RECORD DAILY HIGH MIN TEMPERATURE OF 54 F IN 1998 AND PREVIOUS YEARS. DECEMBER 2011 WAS WETTER THAN NORMAL...MAINLY DUE TO THE HEAVY RAINFALL ON THE 6-7TH. THE 3.10 INCHES OF PRECIPITATION MEASURED ON THE 7TH WAS NOT ONLY THE ALL-TIME WETTEST SINGLE DAY IN DECEMBER FOR WASHINGTON DC...BUT WAS THE MOST PRECIPITATION MEASURED IN ANY CALENDAR DAY FROM NOVEMBER THROUGH MARCH. A TRACE OF SNOW WAS REPORTED AT DCA ON THE 7TH AND 17TH...BUT NO MEASURABLE SNOW WAS OBSERVED DURING THE MONTH. DECEMBERS WITH NO MEASURABLE SNOW HAVE OCCURRED 29 OTHER TIMES SINCE 1888...WHICH AVERAGES OUT TO ABOUT ONCE EVERY FOUR YEARS. " - [ + + ] - Notes from NWS Sterling, VA
Bridgewater - " The month was rather quiet with no storms of any kind. There was plenty of rain. At this writing, there is no snow in sight. However, there is plenty of time for snow in the next few months. My fearless forecast is that we will get more snow and we will get more cold weather. This past year was a wet one with the precipitation being 10 inches above normal. In 2010, the precipitation was 7 inches below normal. An unusual snowstorm hit the valley in October. The snowfall was below normal. The 22 thunderstorms were about normal. There were no severe storms of any kind during the year. Several of the thunderstorms were rather sharp but caused very little damage. The average temperature was above average. In my 50 years of keeping records on temperature, the temperature has been steadily going up. This has been a good year for vegetation to grow. My comments have been based on the weather observed here in Bridgewater. The average temperature for the year was 54.41° and total rainfall measured 48.65". Snowfall for the calendar year was 11.45" and thunder was observed on 22 days. Bridgewater, Virginia during 2011. Other places might have different readings. * The snowfall was below normal for the year. " - [ + + ] - Clayton sends these notes
Chantilly - Russ reports: " December temperatures averaged much above normal. The mean monthly temperature was 42.4° (+6.5°). The mean high temperature was 52.0° (+6.1°) and the mean low temperature was 32.7° (+6.8°). It ranked in the top five warmest Decembers on record. A record high low temp was set on the 6th (56.6°) and 20th (44.4°). Precipitation was 1.46" above normal, but with no snow and only a trace of sleet. Winter is AWOL, so far! *Please note, anemometer is currently partially obstructed from the North and East " - [ + + ]
Dulles - from NWS Sterling (KLWX): " OVERALL...TEMPERATURES THIS DECEMBER WERE WELL ABOVE NORMAL...AND MORE REPRESENTATIVE OF THE DULLES CLIMATE FOR LATE NOVEMBER OR EARLY MARCH. THE AVERAGE MONTHLY TEMPERATURE OF 41.4 F WAS THE 5TH WARMEST DECEMBER ON RECORD FOR DULLES. COLD AIR REMAINED WELL TO OUR NORTH THIS DECEMBER...SPARING THE DULLES AREA FROM EXPERIENCING WINTER-LIKE COLD. THE MAX TEMPERATURE AT IAD WAS NEVER LOWER THAN 40 F ON ANY DAY THIS MONTH. DECEMBER 2011 WAS THE FIRST DECEMBER ON RECORD THAT DAILY MAX TEMPERATURES NEVER DROPPED BELOW THE 40-DEGREE MARK. THREE DAILY TEMPERATURE RECORDS WERE BROKEN AT IAD THIS MONTH. A MIN TEMPERATURE OF 56 F ON THE 6TH AND 43 F ON THE 20TH BOTH SET DAILY HIGH MIN TEMPERATURE RECORDS. A MAX TEMPERATURE OF 61 F ON THE 21ST BROKE THE PREVIOUS RECORD OF 60 F PREVIOUSLY SET IN 1998. DECEMBER 2011 WAS WETTER THAN NORMAL...MAINLY DUE TO THE HEAVY RAINFALL ON THE 7TH AND 22ND. THE 2.14 INCHES OF PRECIPITATION MEASURED ON THE 7TH AND 1.12 INCHES ON THE 22ND BOTH SET NEW DAILY MAX RAINFALL RECORDS. THE RAINFALL ON THE 7TH WAS THE 3RD WETTEST CALENDAR DAY ON RECORD IN DECEMBER FOR DULLES. A TRACE OF SNOW WAS REPORTED AT IAD ON THE 29TH ...BUT NO MEASURABLE SNOW WAS OBSERVED DURING THE MONTH. A DECEMBER WITH NO MEASURABLE SNOW HAS OCCURRED 14 OTHER TIMES SINCE 1962...WHICH AVERAGES OUT TO ABOUT ONCE EVERY 3-4 YEARS. " - [ + + ]
Glen Allen - Lowell sends these additional notes: " December was a very warm month as the monthly mean temperature was 46.0°F, a +6.1°F departure from average, and was drier than average when compared to my Glen Allen records. The average temperature this December was 13.3°F warmer than last December which was very cold. December didn't set any daily records for warmth but was constantly warm. Glen Allen had 6 days of >= 65°F and 12 days of >=60°F. The lowest temperature was 25°F and that was 9°F above the record highest minimum temperature for December at this station. The lowest barometric pressure of the month was 29.44 inches recorded on the 7th and 27th; the highest was 30.69 inches on December 11th. The mean temperature for the Richmond International Airport was 46.3°F and that made December the 6th warmest in the past 114 years and the 8th warmest in the past 132 years. (The separation in records was done as the mean temperatures from 1880 to 1896 aren't very accurate.) The two years in the above period that were warmer were 1891 and 1889. The mean temperature used for 1891 for Richmond was 1.8°F warmer than the mean for Norfolk for the same period. The mean for Richmond in 1889 was only 0.3°F less than Norfolk when comparing the mean temperatures between 1897 and 2010. On average Norfolk runs 3.7°F warmer for December than Richmond. Richmond's December minimum temperature was 25°F that ties 1994 for the highest monthly minimum temperature in the past 114 years. Also Richmond's lowest daily mean temperature was 36.5°F and that was highest recorded in the past 114 years for December. December didn't even have a trace of snow and this has happened only 12 times in the past 113 years; the average snowfall for December is 2.1 inches. The 2.03 inches of precipitation for December was -1.23 inch departure and the 27th driest December of the past 114 years. The only stormy weather came on the 7th in a thunderstorm associated with a cold front that gave Glen Allen winds to 33 mph. Just 3.6 miles southwest of this station winds moved a heavy propane gas grill across a deck, estimated winds of 50 to 60 mph, and winds of 64 mph were reported at Richmond International Airport. [ + - ] "
Herndon - Randy reports: " December was above normal for temperature and precipitation. The temperatures ranged between a high of 62 and a low of 22; with periods of very warm temperatures scattered through out the month; we averaged almost 5 degrees above normal. On the precipitation side, the month was 1.47" above normal with 4.74" measured. We had a very heavy rainfall on the 7th when 2.58" fell causing some minor flooding in the area. We also had another wet period just before Christmas. We had only a trace of snow on the 29th. For the year, we ended up about 9" above normal for precipitation and with only 0.5" of snow that occurred in October. " - [ + + ]
Norfolk - from NWS Wakefield (AKQ) " DECEMBER 2011 FINISHES WITH AN AVERAGE MONTHLY TEMPERATURE OF 50.3 F...RANKING AS THE 8TH WARMEST DECEMBER ON RECORD. BASED ON THE PERIOD 1981-2010...THE NORMAL DECEMBER AVERAGE TEMPERATURE AT NORFOLK IS 44.1 F. AN INTERESTING NOTE IS THE LARGE DIFFERENCE BETWEEN DECEMBER 2011 (50.3 F/8TH WARMEST) AND DECEMBER 2010 (35.1 F/4TH COLDEST). IN ADDITION...THE AVERAGE ANNUAL TEMPERATURE FOR 2011 WAS 62.4 F...RANKING AS THE 2ND WARMEST ON RECORD. BASED ON THE PERIOD 1981-2010...THE NORMAL ANNUAL VALUE AT NORFOLK IS 60.1 F. THE TOP 5 WARMEST YEARS ARE LISTED BELOW: 1) 62.7 F (1990) 2) 62.4 F (2011) 3) 62.38 F (1991) 4) 61.92 F (1994) 5) 61.9 F (1998) TEMPERATURE RECORDS AT NORFOLK DATE BACK TO 1874 FOR DAILY TEMPERATURE DATA AND 1871 FOR AVERAGE MONTHLY AND ANNUAL TEMPERATURE. " - [ + - ]
Portsmouth - " December's average temperature (47.9°) was 3.7° ABOVE NORMAL. Rainfall was BELOW NORMAL by 1.36" and was 58% of normal relative to normal Decembers for the period from 1976 to 2010. Cold frontal passages occurred on the 7th, 9th, 16th, 23rd, 26th, 27th, 28th and 31st. On 7 December dates, frost was recorded. December 2011 was the 8th driest December in the database to 1976. December 2011 TIED with 1991 as the 7th warmest December in the database to 1976. STATION RECORDS: 7th - WIND GUST 54mph [previous 46mph 1983]; 22nd - TEMPERATURE Maximum Minimum 58° [previous 56° 1990]; 27th - WIND GUST 36mph [previous 30mph 2004]. " - [ + - ]
Richmond - from NWS Wakefield (AKQ) " DECEMBER 2011 FINISHES WITH AN AVERAGE MONTHLY TEMPERATURE OF 46.3 F...RANKING AS THE 8TH WARMEST DECEMBER ON RECORD. BASED ON THE PERIOD 1981-2010...THE NORMAL DECEMBER AVERAGE TEMPERATURE AT RICHMOND IS 41.1 F. AN INTERESTING NOTE IS THE LARGE DIFFERENCE BETWEEN DECEMBER 2011 (46.3 F/8TH WARMEST) AND DECEMBER 2010 (33.3 F/7TH COLDEST). IN ADDITION, THE AVERAGE ANNUAL TEMPERATURE FOR 2011 WAS 60.77 F...RANKING AS THE 4TH WARMEST ON RECORD. BASED ON THE PERIOD 1981-2010...THE NORMAL ANNUAL VALUE AT RICHMOND IS 58.8 F. THE TOP 5 WARMEST YEARS ARE LISTED BELOW: 1) 61.4 F (1891) 2) 61.0 F (1990) 3) 60.8 F (1890) 4) 60.77 F (2011) 5) 60.7 F (2006) TEMPERATURE RECORDS AT RICHMOND DATE BACK TO 1897 FOR DAILY TEMPERATURE DATA AND 1881 FOR AVERAGE MONTHLY AND ANNUAL TEMPERATURE. " - [ + - ]
Woodstock - Lauck adds these year-end stats: " The average of monthly average temps was 56.2° and that was a +0.9° departure from normal. The max temp was 96° on July 23rd while the minimum temperature of 10° occurred on the 22nd of January. 50 days with thunder were recorded and the total precipitation for the year was 50.84" Total snowfall for the calendar year was 12.8" " - [ + + ]
North Carolina:
Greensboro - NWS RAH reports: " 12/6 NEW RECORD HIGH MINIMUM TEMPERATURE...60 BREAKS THE OLD RECORD OF 53 SET IN 1998; 12/22 NEW RECORD HIGH MINIMUM TEMPERATURE...60 BREAKS THE OLD RECORD OF 54 SET IN 1956. " - [ + + ]
Raleigh - NWS RAH notes: " 12/6 NEW RECORD HIGH MINIMUM TEMPERATURE...60 BREAKS THE OLD RECORD OF 60 SET IN 1998; 12/21 TIED RECORD HIGH MINIMUM TEMPERATURE...55 TIES THE OLD RECORD OF 55 SET IN 1984; 12/22 NEW RECORD HIGH MINIMUM TEMPERATURE...61 BREAKS THE OLD RECORD OF 56 SET IN 1956. " - [ + - ]
Raleigh - Bob notes: " VERY NICE WEATHER DURING DECEMBER WITH THE AVERAGE DAILY TEMPERATURE OVER 4 DEGREES ABOVE NORMAL. PRECIPITATION WAS ALSO ON THE LIGHT SIDE WITH 2.33" OF RAIN WHICH IS -0.71' BELOW NORMAL. FOR THE YEAR, PRECIPITATION WAS 2.58" BELOW NORMAL. THERE WAS NO THREAT OF WINTRY PRECIPITATION OR SEVERE WEATHER DURING THE MONTH. " - [ + - ]
Nearby Locations:
Tri-Cities - from NWS MRX, Morristown, TN: " Tri-Cities received an annual total of 47.68 inches of precipitation in 2011, which was 6.67 inches above normal. It ranked as the 14th wettest year on record at Tri-Cities. The wettest year of the 73 years of observations at Tri-Cities was back in 2003, when 65.64 inches of precipitation was recorded. The annually averaged temperature at Tri-Cities in 2011 was 57.7 degrees, which was 2.2 degrees above normal. It tied with 1991 and 1953 as the 5th warmest year on record at Tri-Cities. The warmest year at Tri-Cities was back in 1990, when the annually averaged temperature was 58.2 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 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, | 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 |