FNUS71 KLWX 251121 FWSLWX SPOT FORECAST FOR SPOTSY CH RX FIELDS 2010...NATIONAL PARK SERVICE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 721 AM EDT THU MAR 25 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON MARCH 25. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... INCREASING WINDS FROM THE SOUTH-SOUTHWEST ARE EXPECTED TODAY AS HIGH PRESSURE MOVES OFF THE COAST. SUSTAINED WINDS OF 10-20 MPH WITH GUSTS OVER 25 MPH WILL BE LIKELY. THE STRONGEST WINDS WILL BE ACROSS NORTHERN AND CENTRAL VIRGINIA INTO LOWER SOUTHERN MARYLAND. DEWPOINTS ARE EXPECTED TO CLIMB SLOWLY TODAY GIVEN THE SOUTHERLY COMPONENT TO THE WIND. THEREFORE...RELATIVE HUMIDITIES WILL REMAIN ABOVE 30 PERCENT THIS AFTERNOON. A COLD FRONT WILL APPROACH THE AREA LATE THIS AFTERNOON INTO TONIGHT. RAIN AHEAD OF THE FRONT WILL MOVE INTO THE POTOMAC HIGHLANDS LATE THIS AFTERNOON AND WILL SPREAD ACROSS THE REST OF THE AREA TONIGHT. RAIN WILL CONTINUE INTO EARLY FRIDAY BEFORE ENDING FROM NORTHWEST TO SOUTHEAST LATE FRIDAY MORNING THROUGH FRIDAY AFTERNOON. RAIN MAY END AS A PERIOD OF SNOW IN THE MOUNTAINS. NORTHERLY WINDS BEHIND THE COLD FRONT FRIDAY WILL GUST TO AROUND 30 MPH. .TODAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). MAX TEMPERATURE.....AROUND 72. MIN HUMIDITY........41 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING SOUTH 9 TO 14 MPH WITH GUSTS UP TO 25 MPH BY LATE THIS MORNING. CWR.................10 PERCENT. MIXING HEIGHT.......100-1100 FT AGL...INCREASING TO 5100-6600 FT AGL. TRANSPORT WINDS.....SOUTH 1 TO 7 MPH...INCREASING TO SOUTHWEST 26 TO 35 MPH. TIME (EDT) 10 AM NOON 2 PM 4 PM SKY (%).........63 68 70 76 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............58 64 69 70 RH..............62 54 45 42 20 FT WIND......S 6 S 8 S 10 S 11 20 FT WIND GUST.15 15 20 25 CWR.............0 0 10 10 .TONIGHT... SKY/WEATHER.........CLOUDY (85-95 PERCENT). SHOWERS EARLY IN THE EVENING. MIN TEMPERATURE.....AROUND 50. MAX HUMIDITY........77 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 7 TO 12 MPH. CWR.................10 PERCENT...INCREASING TO 90 PERCENT. MIXING HEIGHT.......4900-6000 FT AGL...DECREASING TO 1000-1700 FT AGL. TRANSPORT WINDS.....SOUTHWEST 30 TO 36 MPH...DECREASING TO 9 TO 10 MPH. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........84 90 93 97 100 100 WEATHER COV..... LIKELY LIKELY DEFNTE DEFNTE DEFNTE WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............69 64 60 58 55 54 RH..............42 50 60 64 72 74 20 FT WIND......S 10 S 7 S 6 S 6 S 6 SW 5 20 FT WIND GUST.20 15 15 15 15 10 CWR.............10 60 60 90 90 90 $$ FORECASTER...KRAMAR REQUESTED BY...GREGG KNEIPP TYPE OF REQUEST...PRESCRIBED .TAG 20100325.SPOTS.03/LWX