FNUS71 KLWX 071530 FWSLWX SPOT FORECAST FOR HQ PILES...NPS NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1030 AM EST THU FEB 7 2013 FORECAST IS BASED ON IGNITION TIME OF 1100 EST ON FEBRUARY 07. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL MOVE OFF THE COAST TODAY. LOW PRESSURE WILL TRACK UP THE MID-ATLANTIC COAST TONIGHT BEFORE PASSING BY TO OUR EAST FRIDAY. A LIGHT WINTRY MIX IS POSSIBLE ACROSS SKYLINE DRIVE LATE TONIGHT INTO FRIDAY MORNING. LOW PRESSURE WILL RAPIDLY INTENSIFY AS IT MOVES AWAY FROM THE AREA FRIDAY NIGHT AND SATURDAY. GUSTY NORTHWEST WINDS ALONG WITH CHILLY CONDITIONS ARE EXPECTED DURING THIS TIME. HIGH PRESSURE WILL BUILD OVERHEAD SUNDAY BEFORE A COLD FRONT PASSES THROUGH EARLY NEXT WEEK. .REST OF TODAY... SKY/WEATHER.........CLOUDY (90-100 PERCENT). MAX TEMPERATURE.....AROUND 39. MIN HUMIDITY........65 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING SOUTHEAST AROUND 5 MPH EARLY IN THE AFTERNOON. CWR.................10 PERCENT...INCREASING TO 20 PERCENT. MIXING HEIGHT.......1700-1800 FT AGL. TRANSPORT WINDS.....SOUTHEAST 9 TO 13 MPH. SURFACE WINDS.......LIGHT AND VARIABLE WINDS...BECOMING SOUTHEAST AROUND 5 MPH EARLY IN THE AFTERNOON. TIME (EST) 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........90 91 92 93 94 95 97 WEATHER COV..... SCH SCH SCH SCH SCH SCH WEATHER TYPE.... RN RN RN RN RN RN TEMP............34 36 37 38 38 38 38 RH..............72 67 67 65 66 66 67 20 FT WIND DIR..SE SE SE SE SE SE SE 20 FT WIND SPD..2 3 3 4 4 4 4 20 FT WIND GUST.10 10 10 10 10 10 10 CWR.............10 20 20 20 20 20 20 .TONIGHT... SKY/WEATHER.........CLOUDY (95-100 PERCENT). A CHANCE OF RAIN...SNOW AND SLEET IN THE EVENING...THEN RAIN...FREEZING RAIN AND SNOW LIKELY AFTER MIDNIGHT. PATCHY FOG LATE IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 33. MAX HUMIDITY........90 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS. CWR.................20 PERCENT...INCREASING TO 60 PERCENT. MIXING HEIGHT.......500-1600 FT AGL. TRANSPORT WINDS.....EAST 5 TO 14 MPH. TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........98 99 99 100 100 100 WEATHER COV.....S CHC CHANCE CHANCE LIKELY LIKELY LIKELY WEATHER TYPE....RAIN RAIN RAIN RNSN RNSN RAIN TEMP............37 36 35 35 35 34 RH..............69 75 80 85 87 88 20 FT WIND......SE 3 SE 3 E 2 E 2 E 1 E 1 20 FT WIND GUST.10 10 5 5 5 5 CWR.............20 30 30 60 60 60 .FRIDAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT)...THEN BECOMING PARTLY SUNNY (50-60 PERCENT). PATCHY FOG IN THE MORNING. FREEZING RAIN LIKELY EARLY IN THE MORNING. RAIN LIKELY EARLY IN THE MORNING. A CHANCE OF RAIN IN THE LATE MORNING AND EARLY AFTERNOON. MAX TEMPERATURE.....AROUND 46. MIN HUMIDITY........64 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING NORTHWEST 6 TO 11 MPH WITH GUSTS UP TO 20 MPH EARLY IN THE AFTERNOON. CWR.................60 PERCENT...DECREASING TO 20 PERCENT. MIXING HEIGHT.......400-2200 FT AGL...INCREASING TO 2600-3600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....NORTHWEST 5 TO 13 MPH...INCREASING TO 18 TO 24 MPH LATE. TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........100 99 97 85 75 53 WEATHER COV.....LIKELY LIKELY CHANCE CHANCE CHANCE S CHC WEATHER TYPE....RAIN RAIN RAIN RAIN RAIN RAIN TEMP............34 36 40 43 45 44 RH..............90 89 83 79 74 71 20 FT WIND......NE 2 NE 1 NE 1 NW 2 NW 4 NW 7 20 FT WIND GUST.5 5 5 15 CWR.............60 60 50 50 40 20 $$ FORECASTER...KLEIN REQUESTED BY...JOE JARRELLS TYPE OF REQUEST...PRESCRIBED .TAG 20130207.HQPIL.02/LWX