FNUS71 KLWX 141320 FWSLWX SPOT FORECAST FOR SHEN HQ...USDI - NPS NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 820 AM EST THU FEB 14 2013 FORECAST IS BASED ON IGNITION TIME OF 0810 EST ON FEBRUARY 14. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... DRY AND SUNNY TODAY AS LOW PRESSURE PULLS AWAY FROM THE EAST COAST WHILE HIGH PRESSURE BUILDS IN FROM THE WEST. A COLD FRONT WILL MOVE THROUGH FRIDAY NIGHT. A SECONDARY REINFORCING COLD FRONT IS EXPECTED FRIDAY NIGHT. A WAVE OF LOW PRESSURE MAY DEVELOP ALONG THIS FRONT AND IMPACT THE MID-ATLANTIC REGION. ARCTIC HIGH PRESSURE BUILDS IN FROM THE WEST THIS WEEKEND. THE NEXT COLD FRONT CROSSES THE MID-ATLANTIC ON TUESDAY. .TODAY... SKY/WEATHER.........SUNNY (15-25 PERCENT). MAX TEMPERATURE.....AROUND 49. MIN HUMIDITY........39 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING WEST AROUND 5 MPH EARLY IN THE MORNING...THEN BECOMING LIGHT AND VARIABLE IN THE AFTERNOON...BECOMING SOUTHWEST AROUND 5 MPH LATE. CWR.................10 PERCENT. MIXING HEIGHT.......600-2300 FT AGL...INCREASING TO 4600-6400 FT AGL. TRANSPORT WINDS.....SOUTHWEST 7 TO 13 MPH. TIME (EST) 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........16 11 22 26 23 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............35 41 45 47 48 RH..............66 55 43 38 37 20 FT WIND......W 4 W 4 W 3 W 3 SW 3 20 FT WIND GUST.10 10 5 5 5 CWR.............0 0 0 0 0 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT)...THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT). MIN TEMPERATURE.....AROUND 34. MAX HUMIDITY........67 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 6 TO 7 MPH. CWR.................0 PERCENT. MIXING HEIGHT.......1000-2600 FT AGL...DECREASING TO 0-400 FT AGL EARLY IN THE EVENING. TRANSPORT WINDS.....SOUTHWEST 5 TO 13 MPH...DECREASING TO AROUND 3 MPH LATE. TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........22 31 51 57 60 59 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............44 42 40 39 38 37 RH..............47 55 59 62 64 70 20 FT WIND......S 5 S 5 SW 5 SW 6 SW 6 SW 5 20 FT WIND GUST.10 10 10 15 15 10 CWR.............0 0 0 0 0 0 .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). A CHANCE OF SHOWERS LATE. MAX TEMPERATURE.....AROUND 49. MIN HUMIDITY........46 PERCENT. WIND (20 FT)........WEST WINDS 5 TO 6 MPH UNTIL LATE AFTERNOON...BECOMING LIGHT AND VARIABLE. CWR.................10 PERCENT...INCREASING TO 50 PERCENT. MIXING HEIGHT.......0-1300 FT AGL...INCREASING TO 2700-4200 FT AGL LATE IN THE MORNING...THEN INCREASING TO 5600-7500 FT AGL LATE IN THE MORNING...INCREASING TO 6700-7800 FT AGL EARLY IN THE AFTERNOON...DECREASING TO 5400 FT AGL. TRANSPORT WINDS.....WEST 2 TO 7 MPH...INCREASING TO 12 TO 21 MPH IN THE LATE MORNING AND EARLY AFTERNOON...THEN DECREASING TO 7 TO 9 MPH LATE. TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........66 71 75 86 90 95 WEATHER COV..... CHANCE WEATHER TYPE....NONE NONE NONE NONE NONE RNSHWR TEMP............36 38 42 46 48 47 RH..............72 67 57 49 46 47 20 FT WIND......SW 4 SW 4 W 5 W 5 W 5 W 3 20 FT WIND GUST.10 10 10 10 10 5 CWR.............0 0 0 0 10 50 $$ FORECASTER...JACKSON REQUESTED BY...STEPHEN PAULL TYPE OF REQUEST...PRESCRIBED .TAG 20130214.SHENH.02/LWX