FNUS71 KLWX 101839 FWSLWX SPOT FORECAST FOR JARMAN GAP 6...NPS NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 239 PM EDT WED APR 10 2013 FORECAST IS BASED ON IGNITION TIME OF 0930 EDT ON APRIL 10. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A STATIONARY BOUNDARY WILL REMAIN TO OUR NORTH THIS AFTERNOON. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO REMAIN TO OUR NORTH JUST AHEAD OF THE BOUNDARY. BREEZY CONDITIONS ARE OCCURRING DUE TO A STRENGTHENING PRESSURE GRADIENT. A DEEP MIXING LAYER HAS ALLOWED FOR DRIER AIR TO MIX DOWN TO THE SURFACE...CAUSING THE RELATIVE HUMIDITY TO DROP TO NEAR 30 PERCENT. THE RELATIVE HUMIDITY SHOULD NOT DROP TOO MUCH MORE FROM WHERE IT IS AT NOW...HOVERING AROUND 30 PERCENT THROUGH 4 PM. THE RH WILL BEGIN TO INCREASE LATE THIS AFTERNOON. WARM AND DRY CONDITIONS ARE EXPECTED THURSDAY. RH VALUES SHOULD BE A BIT HIGHER WITH MORE ATMOSPHERIC MOISTURE DUE TO A SOUTHERLY FLOW. AN AFTERNOON SHOWER OR T-STORM CANNOT BE TOTALLY RULED OUT...BUT MOST AREAS WILL BE DRY. MORE WIDESPREAD SHOWERS AND POSSIBLE THUNDERSTORMS WILL MOVE THROUGH THE AREA LATE THURSDAY NIGHT INTO EARLY FRIDAY. SOME T-STORMS MAY PRODUCE GUSTY WINDS. RAINFALL AMOUNTS IN EXCESS OF ONE INCH ARE POSSIBLE. DRIER CONDITIONS WILL RETURN LATER FRIDAY THROUGH THE WEEKEND. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). MAX TEMPERATURE.....AROUND 87. MIN HUMIDITY........28 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 6 TO 12 MPH. GUSTS AROUND 20 MPH. CWR.................0 PERCENT. MIXING HEIGHT.......7800-8500 FT AGL. TRANSPORT WINDS.....15 TO 20 MPH. TIME (EDT) 3 PM 5 PM SKY (%).........30 29 WEATHER COV..... WEATHER TYPE....NONE NONE TEMP............86 85 RH..............28 30 20 FT WIND......SW 8 SW 9 20 FT WIND GUST.20 20 CWR.............0 0 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). MIN TEMPERATURE.....AROUND 62. MAX HUMIDITY........75 PERCENT. WIND (20 FT)........WEST WINDS 6 TO 10 MPH. CWR.................10 PERCENT. MIXING HEIGHT.......5600 FT AGL...DECREASING TO 0-500 FT AGL. TRANSPORT WINDS.....WEST 9 TO 18 MPH...DECREASING TO 3 TO 7 MPH IN THE LATE EVENING AND OVERNIGHT. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........29 30 28 27 24 29 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............81 76 72 70 67 65 RH..............34 48 58 61 65 69 20 FT WIND......SW 8 SW 6 SW 6 SW 5 W 6 W 5 20 FT WIND GUST.20 15 10 10 10 10 CWR.............0 0 0 10 0 0 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT)...THEN BECOMING PARTLY SUNNY (55-65 PERCENT). MAX TEMPERATURE.....AROUND 79. MIN HUMIDITY........45 PERCENT. WIND (20 FT)........SOUTH WINDS 6 TO 11 MPH WITH GUSTS UP TO 20 MPH. CWR.................10 PERCENT. MIXING HEIGHT.......100-1300 FT AGL...INCREASING TO 4800-5400 FT AGL. TRANSPORT WINDS.....SOUTHWEST 2 TO 10 MPH...INCREASING TO SOUTH 13 TO 20 MPH IN THE AFTERNOON. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........32 34 61 66 54 70 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............65 66 71 75 77 78 RH..............71 71 59 51 46 47 20 FT WIND......W 5 SW 5 SW 5 SW 6 S 7 S 9 20 FT WIND GUST.10 10 10 10 15 20 CWR.............10 10 10 10 10 10 $$ FORECASTER...LASORSA REQUESTED BY...JOHN FRY PEG AINSLIE TYPE OF REQUEST...PRESCRIBED .TAG 20130410.JARMA.07/LWX