FNUS71 KLWX 081248 FWSLWX SPOT FORECAST FOR BUZZARD HILL...NATL PARK SVC NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 848 AM EDT THU APR 8 2010 FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON APRIL 08. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A COLD FRONT WILL APPROACH THE APPALACHIANS TODAY AS A MOIST AND UNSTABLE AIRMASS DEVELOPS ACROSS THE REGION. SHOWERS AND THUNDERSTORMS ARE EXPECTED LATE THIS AFTERNOON AND TONIGHT AS THE COLD FRONT MOVES ACROSS THE AREA. BEHIND THE FRONT...GUSTY NORTHWESTERLY WINDS ARE EXPECTED ON FRIDAY AS COOL AND DRY AIR ARRIVES. TEMPERATURES NEAR OR JUST BELOW NORMAL ARE EXPECTED EARLY IN THE WEEKEND BEFORE A RETURN TO NEAR OR SLIGHTLY ABOVE-NORMAL TEMPERATURES EARLY NEXT WEEK. .TODAY... SKY/WEATHER.........SUNNY (15-25 PERCENT)...THEN BECOMING PARTLY SUNNY (60-70 PERCENT). MAX TEMPERATURE.....AROUND 82. MIN HUMIDITY........44 PERCENT. WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH. CWR.................10 PERCENT. MIXING HEIGHT.......200-1700 FT AGL...INCREASING TO 5400-7100 FT AGL. TRANSPORT WINDS.....SOUTHWEST 8 TO 16 MPH...INCREASING TO 18 TO 25 MPH LATE IN THE MORNING. TIME (EDT) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%)......... 9 26 34 60 79 WEATHER COV..... WEATHER TYPE.... NONE NONE NONE NONE CHC TSTMS TEMP............ 68 75 77 79 79 RH.............. 61 48 47 44 45 20 FT WIND...... S 6 S 8 S 11 S 12 S 12 20 FT WIND GUST. 15 15 25 25 25 CWR............. 0 0 0 10 10 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT)...THEN BECOMING PARTLY CLOUDY (40-50 PERCENT). SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 47. MAX HUMIDITY........69 PERCENT. WIND (20 FT)........NORTHWEST WINDS 9 TO 14 MPH WITH GUSTS UP TO 25 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. CWR.................90 PERCENT...DECREASING TO 10 PERCENT. MIXING HEIGHT.......4700 FT AGL...DECREASING TO 900-2700 FT AGL UNTIL EARLY MORNING...THEN INCREASING TO 3400-3900 FT AGL LATE. TRANSPORT WINDS.....SOUTHWEST 21 TO 25 MPH...BECOMING NORTHWEST 14 TO 22 MPH IN THE LATE EVENING AND OVERNIGHT. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%)......... 84 100 100 97 86 50 WEATHER COV..... DEFNTE DEFNTE DEFNTE CHANCE CHANCE WEATHER TYPE.... RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR NONE TEMP............ 78 75 70 64 57 52 RH.............. 45 46 51 58 67 69 20 FT WIND...... SW 11 W 10 NW 9 NW 8 W 7 W 8 20 FT WIND GUST. 25 20 20 20 15 15 CWR............. 90 90 80 40 40 10 .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 59. MIN HUMIDITY........36 PERCENT. WIND (20 FT)........WEST WINDS 10 TO 15 MPH. CWR.................10 PERCENT. MIXING HEIGHT.......3300-4300 FT AGL...INCREASING TO 7600-8300 FT AGL. TRANSPORT WINDS.....WEST 22 TO 29 MPH. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........34 20 25 31 35 32 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............51 50 53 56 58 58 RH..............63 61 52 45 39 37 20 FT WIND......NW 8 NW 8 NW 9 NW 10 W 10 W 11 20 FT WIND GUST.15 15 20 20 20 25 CWR.............10 0 0 0 0 0 $$ FORECASTER...WOODCOCK REQUESTED BY...BLAIR WILLIAMSON TYPE OF REQUEST...PRESCRIBED .TAG 20100408.BUZZA.01/LWX