icn Winter Storm Warning  -  Jefferson Co, WV  -  Frederick Co, VA  -  Frederick Co, MD  -  Washington Co, MD  -  Berkeley Co, WV  -  Loudoun Co, VA  -  Clarke Co, VA  -  Morgan Co, WV 

harpersferry Regional Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.

Snow Forecast for Feb 9 7am through Feb 10 6PM Updated 2/8/10 @ 8:10 PM

Feb 5-6 Snowfall Totals: Updated 2/7/10 @ 4:53 PM

PRELIMINARY SUMMARY OF TWO-DAY STORM TOTAL SNOWFALLS EXCEEDED IN THE BALTIMORE-WASHINGTON AREA

METRIC | IMPERIAL
Updated: 9/2/2010 @ 02:20am - next update at 02:25am  
Summary / Temperature Wind Rain/Melted Snow Cloud Level


Night time, Dry, Clear skies
Night time, Dry, Clear skies

5.0°F Colder 0.1°F than last hour.
Very Cold
Currently 5.0, Max: 6.1, Min: 4.7 Feels like:
5°F

24-hr
difference
-4.9°FColder 4.9°F than yesterday at this time.
LOCALLY: Today Yesterday
High: 6.1°F
12:29am
34.0°F
4:15pm
Low: 4.7°F
1:04am
-5.3°F
6:38am
Normal Temp
Normal High:   44.6°F
Normal Low:   24.8°F
Record Temp
Record High:   66.2°F in 1965
Record Low:   -9.4°F in 1967
 Calm SSE
0.0
Gust:
0.0
Calm
60-Min Avg: Calm
120-Min Avg: Calm
Max Gust: 2.0 mph 1:08am
Month: 17.0 mph Feb 5
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
2/7/2010
9:56 AM
February: 1.05 in
Last 7 Days: 1.05 in
Rain Season:1 3.54 in
Rain Days: 5 in 2010
4 rain days in February.
Barometer Humidity/Dew Point Moon
Current: 30.206 inHg Falling 0.006 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Steady
Today: Todays High 30.216
Todays Low 30.206
Humidity: 82 % Increased 1% since last hour.
Humidex: -3.4°F
Today: Todays High
Todays Low
Dew Point: 0.7°F Increased 0.3°F since last hour.
Wetbulb: 4.3°F
Morning Crescent, 25 days, 0 hours, 9 minutes in cycle
20%
Illuminated
UV Forecast Solar Information
9 Feb 2010   Low   2.4   
10 Feb 2010   Low   2.2   
11 Feb 2010   Low   2.2   
Sunrise is at: 7:10 AM
Sunlight 24Hrs: 00:00 Hrs
Sunlight Month: 19:43 Hrs
Wind Chill Heating Degree Days Sun
Current: 5.0°F
Today: 4.7°F  at 1:04am
Yesterday: -5.2°F
Last Week: -5.9°F
Record: -7.8°F   16-Jan-2009
Today: 5.5
February: 325.9
2010 to Date: 1397.7
Cooling Degree Days
2010 to Date: 0.0
Daylight: Possible hours of Daylight
10:31
0:02 Min
Snow3 Irrigation Index5 Station All Time Records Fire Risk
Today: 0.00 in
Yesterday: 0.00 in
February: 29.60 in
Season Total:2 60.80 in
Snow Depth: 25.00 in
4 snow days in February
10 snow days this season.2
Updated at Midnight
Current: 0.00 in   
7-Days Rain: 1.05 in   
7-Days ET: 0.12 in   
7-Day: 0.933 in 0.933 in water in excess of what evaporated in last 7 days.
February: 0.9 in 0.9 in water in excess of what evaporated this month.
Outside Now
Air Density: 1.380 kg/m3
HIGHS: LOWS:
95.2°F
07-Jun-2008
-6.2°F
07-Feb-2010
Daytime Records
    86.7 F on: Jun 07 2008   10.9F on: Jan 16 2009
Nitetime Records
  79.9F on: Sep 15 2008 3.0F on: Feb 07 2010
ICN:1 ISS:Ok CON:2.4 RCP:94%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
-2.3
at 02:20 AM
1 Rain season: Jan 1st to Dec 31st.    2 Snow season July 1st to June 30th.    3 Snow manually measured usually around 7AM and 7PM.    5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present.)
 NWS Weather Forecast  -   Outlook Overnight & Tuesday
Overnight

Mostly Cloudy
Mostly
Cloudy
Lo 10 °F
NWS forecast: Mostly cloudy, with a low around 10. Calm wind.
Tuesday

Snow. Chance for Measurable Precipitation 90%
Snow

Hi 29 °F
NWS forecast: Snow, mainly after 2pm. High near 29. Calm wind becoming east around 6 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
 NWS Short Term Weather Forecast
Tuesday

Snow. Chance for Measurable Precipitation 90%
Snow

Hi 29 °F
Tuesday
Night

Heavy Snow. Chance for Measurable Precipitation 100%
Heavy
Snow
Lo 25 °F
Wednesday

Snow. Chance for Measurable Precipitation 90%
Snow

Hi 31 °F
Wednesday
Night

Slight Chance Snow. Chance for Measurable Precipitation 20%
Slight Chc
Snow
Lo 20 °F
Thursday

Breezy
Breezy

Hi 35 °F
Thursday
Night

Partly Cloudy
Partly
Cloudy
Lo 19 °F
Friday

Sunny
Sunny

Hi 38 °F
Friday
Night

Partly Cloudy
Partly
Cloudy
Lo 18 °F
Version 5.00 BETA2 21-Jan-2010 - Script Modification/Additions by: WebsterWeatherLIVE.com
   Jefferson Co, WV - Winter Storm Warning    Frederick Co, VA - Winter Storm Warning    Frederick Co, MD - Winter Storm Warning    Washington Co, MD - Winter Storm Warning    Berkeley Co, WV - Winter Storm Warning    Loudoun Co, VA - Winter Storm Warning    Clarke Co, VA - Winter Storm Warning    Morgan Co, WV - Winter Storm Warning