Main page http://i4weather.net CLIMATOLOGCAL DATA: HAGERSTOWN MD LAT:39.38.31 LONG:77.42.06 ELEV:519 FT. Station: Hagerstown 1E Md (Print Landscape) Observer: Gregory L Keefer Observation time: Midnight MONTH: DECEMBER YEAR: 2009 * Record Set or Tied EVENTS F=Fog T=Thunder TEMPERATURE F. DEGREE DAYS PRECIPITATION WIND(MPH) SKY H=Hail S=Sleet 12am (Base 65) Amt. Snow On Average G=Glaze(Frz Rain) Day MAX MIN Read HDD CDD Liq. Ice Gnd. Dir Speed Gust Cover %Sun DW=Damaging Wind 1 55 30 33 22 0 0 0 0 S 6 26sw S 100 2 57 30 57 21 0 .59 0 0 SE 8 33se C 0 3 58 45 45 13 0 .09 0 0 W 10 36w C 10 4 47 39 41 22 0 0 0 0 W 5 22w C 10 5 41 29 29 30 0 .24 1.2 1 NNW 6 18nw C 0 6 34 26 27 35 0 0 0 .5 W 4 22w PC 60 7 37 26 37 33 0 0 0 T S 3 18s C 15 8 42 33 33 27 0 .23 2.0 2 SE 4 18se C 20 S 9 47 33 42 25 0 1.46 T T S 8 44w PC 30 F,S 10 42 24 24 32 0 0 0 0 W 18 47w PC 40 11 34 19 28 38 0 0 0 0 W 12 38w S 100 12 41 20 35 34 0 0 0 0 SSE 4 15s S 95 13 39 33 39 29 0 .54 T 0 SSE 6 22s C 0 G 14 51 37 40 21 0 0 0 0 SE 6 26se C 20 15 52 38 38 20 0 0 0 0 W 8 31w C 10 16 38 26 26 33 0 0 0 0 WNW 8 28w S 90 17 36 21 25 36 0 0 0 0 WNW 7 22nw PC 60 18 34 20 27 38 0 .02 0.5 .5 SSE 2 10n C 25 19 27 23 25 40 0 1.08 15.7 16 NNW 8 21n C 0 20 34 21 22 37 0 0 0 14 WNW 8 27w S 80 21 38 22 33 35 0 0 0 12 W 7 22w PC 40 22 37 26 29 33 0 0 0 10 W 7 23w C 20 23 34 18 20 39 0 0 0 8 WNW 4 18nw S 95 24 32 8 17 45 0 0 0 7 NNE 2 9ne S 95 25 46 16 44 34 0 .19 T 6 ENE 9 38e C 0 F,S 26 44 36 36 25 0 .61 0 2 NW 4 15n C 0 F 27 46 26 38 29 0 0 0 1 SSE 4 18s S 90 F 28 38 29 31 31 0 T T 1 W 14 35w PC 50 29 31 20 20 39 0 0 0 T NW 15 42nw S 95 30 30 18 28 41 0 0 0 T SSE 4 20s C 20 31 34 27 32 34 0 .31 3.0 2 S 3 13s C 0 F,S,G ------------------------------------------------------------------------------------ 1256 819 971 0 5.36 22.4 W 6.9 47w 41% ------------------------------------------------------------------------------------ MONTHLY STATS DECEMBER 2009 TEMPERATURE---------------------------------------------------------- AVG TEMP 33.5 Normal 34.3 Dep -0.8 AVG MAX 40.5 Normal 42.4 Dep -1.9 AVG MIN 26.4 Normal 26.2 Dep +0.2 MAXIMUM 58 on 3rd Lowest Max 27 on 19th MINIMUM 8 on 24th Highest Min 45 on 3rd NUMBER OF DAYS Max 90 or Higher 0 Max 32 or Lower 4 Min 32 or Lower 23 Min 0 or Lower 0 PRECIPITATION-------------------------------------------------------- MONTH TOTAL 5.36 Normal 2.84 Dep +2.84 YEAR TO DATE 44.08 Normal 37.96 Dep +6.12 NUMBER OF DAYS .01" or more 11 .10" or more 9 1.00" or more 2 LARGEST DAILY AMOUNT 1.46 on 9th Largest 24 Hr Amount 1.69 on 8-9th SNOWFALL------------------------------------------------------------- MONTH TOTAL 22.4 Normal 5.2 Dep +17.2 SEASON TOTAL 22.4 Normal 6.9 Dep +15.5 NUMBER OF DAYS 0.1" or more 5 1.0" or more 4 Snow Cover 1" or more 13 MAXIMUM DAILY SNOWFALL 15.7 on 19th MAX 24 Hr Snowfall 16.2 18-19 Storm Max 16.2 19th OTHER---------------------------------------------------------------- NUMBER OF DAYS Fog 5 Thunder 0 Hail 0 Sleet 4 Glaze 2 Damaging Wind 0 Cloudy 16 Partly Cloudy 6 Sunny 9 Sunshine% 41.0% AVERAGE WIND West @ 6.9 mph PEAK GUST 47w on 10th MAX BAROMETER 30.63 on 12th MIN BAROMETER 29.15 on 9th TOTAL DEGREE DAYS HEATING 971 Normal 967 / COOLING 0 Normal 0 DECEMBER 2009 WEATHER REMARKS HAGERSTOWN 1E MARYLAND DAY 1st: Sunny breezy high 55 F. 2nd: Cloudy today with periods of rain this afternoon and evening. SE winds gusting to 33 mph. Rainfall .57". 3rd: Some rain overnight .09" and gusy winds to 36 mph from the west. Cloudy and windy today W winds to 35 mph. 4th: Mostly cloudy & breezy high 47 F. FIRST SNOW OF SEASON 1.2" 5th: Wet snow began shortly after 7am. Wet snow fell all day ended by late afternoon 5pm. Total accumulation 1.2" Water content .24". Temperature stayed above 32 through the event mid 30's 6th: Partly cloudy high 34 F. 7th: Mostly cloudy high 37 F. SNOW 2.0" THEN RAIN 8th: Mostly cloudy today high 42 F. Snow began falling around 9pm. Snow became moderate to heavy at times till around midnight when it changed to some sleet then all rain. Total snow before change over 2.0" Once again temperature stayed above 32. WINDY 9th: Rain overnight moderate to heavy at times ended by 8am. 1.46" fell since midnight. 1.69" total both rain and melted snow. Fog during the morning. Partly cloudy today high 47 F. Windy this evening with west winds gusting to 44 mph. 10th: Strong west winds overnight gusting to 41 mph. Partly cloudy windy and colder today with NW winds gusting to 43 mph. Strong winds this evening with a peak gust of 47 mph at 6:35pm 11th: Wind gust overnight to 33 mph. Low of 19 F. this morning. Sunny windy and cold today high 34 F. West winds gusting to 38 mph today. 12th: Sunny high 41 F. COLD RAIN SOME FREEZING RAIN 13th: Rain began just after 6am some freezing rain on colder surfaces and in colder locations. Cold rain all day ended by 3pm. 14th: Cloudy breezy high 51 F. 15th: Cloudy windy high 52 F. West winds gusting to 31 mph during the evening. 16th: Sunny cold and windy high 38 F. WNW winds gusting to 28 mph. 17th: Partly cloudy breezy and cold high 36 F. RECORD DECEMBER SNOWFALL 16.2" 18th: Mostly cloudy high 34 F. Snow began around 10:15pm this evening 0.5" by midnight. 19th: Snow fell all night moderate to heavy at times 7.5" on ground 8am. Snow continues all morning heavy at times 11.3" by noon. Snow continues during afternoon and evening. 1pm 12.3". 4pm 14.0" 7pm 16.0" Storm ended by 9 pm 16.2" Total. Water content from snow is 1.10" NEW DECEMBER SNOWFALL RECORD FOR MOST SNOW FROM A STORM OR EVENT - The the old record of 12.5" set in 1960 on Dec 11-12 was surpassed. This is also a December record for the most snow in a 24 hour period. This is also a December record for the most snow on the ground at one time from one or several snows. This is the 7th largest snowfall for any month. The all time record was 34.9" set January 8th 1996. 20th: Sunny and windy high 34 F. WNW winds gusting to 27 mph. 21st: Partly cloudy warmer high 38 F. 22nd: Mostly cloudy high 37 F. 23rd: Sunny high 34 F. 24rd: Very cold this moring low of 8 F. Sunny and cold high 32 F. 25th: CHRISTMAS - Low of 16 F. overnight. It's a White Christmas Still 7 inches of snow on ground. A little sleet fell this morning. Temperatures rising all day. Rain began by mid afernoon continued into evening with strong ENE winds gusting to 38 mph temperature rose to 46 F. rainfall .19". 26th: Rain and fog overnight and snow disappearing fast. Light rain,drizzle,& fog during the morning. Rainfall .61" Fog this evening. 27th: Dense freezing fog overnight. Fog froze on trees, roads, etc. Mostly sunny today high 46 F. 28th: Windy overnight west winds gusting to 35 mph. Partly cloudy and windy today with gusts to 35 mph. Temps remained in low 30's all day. Also some snow flurries today. 29th: Windy overnight NW winds gusting to 42 mph. Sunny windy and cold today NW winds gusting to 39 mph. Temp in 20's all day. 30th: Mostly cloudy and cold high 30 F. SNOWFALL 3.0" 31st: Snow began around 5am and came down moderate to heavy at times tappered to flurries by 9am with 3.0" on the ground. Later today some light sleet freezing rain and rain between 4:30pm - 9pm, trace of ice. Fog this evening. This is the 2nd snowiest December on record with 22.4". The all time record was set in 1951 with 23.1" DECEMBER 2009