FNUS71 KAKQ 111228 FWSAKQ SPOT FORECAST FOR WWI EARTHWORKS RX...NATIONAL PARK SERVICE NATIONAL WEATHER SERVICE WAKEFIELD VA 828 AM EDT MON MAY 11 2009 FORECAST IS BASED ON IGNITION TIME OF 0930 EDT ON MAY 11. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A SURFACE LOW TRACKS ALONG A STALLED FRONTAL BOUNDARY TOWARDS THE CAROLINA COAST TODAY AND A WEAK UPPER LEVEL DISTURBANCE MOVES OVER THE MID ATLANTIC REGION AT THE SAME TIME. A STRONGER AREA OF HIGH PRESSURE SHIFTS INTO THE REGION TUESDAY MORNING THROUGH WEDNESDAY. .TODAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT). SCATTERED SPRINKLES EARLY IN THE MORNING. SHOWERS LIKELY IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 60. MIN HUMIDITY........61 PERCENT. WIND (20FT/2MIN)....NORTHEAST WINDS AROUND 5 MPH EARLY IN THE MORNING...BECOMING LIGHT...THEN BECOMING NORTHEAST 5 TO 6 MPH IN THE LATE MORNING AND EARLY AFTERNOON...BECOMING LIGHT. MIXING HEIGHT.......300-2200 FT AGL...INCREASING TO 3100-4100 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....NORTHEAST 6 TO 14 MPH...DECREASING TO AROUND 5 MPH LATE. VENTILATION RATE....VERY POOR TO FAIR (1300-49400 FT-MPH). TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM SKY (%).........94 95 100 100 100 100 100 100 100 100 100 100 WEATHER COV.....SCT SCT LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW TEMP............59 59 59 59 59 59 59 59 58 58 56 54 RH..............75 69 69 67 67 67 64 67 67 69 74 74 20 FT WIND DIR..N N N N N N NE NE N N N NW 20 FT WIND SPD..5 6 6 6 6 5 4 3 3 3 2 2 20 FT WIND GUST.10 15 15 15 15 15 10 5 5 5 5 5 MIX HGT (KFT)...2.2 3.1 3.5 3.8 4.1 4.1 3.9 3.7 3.5 3.2 2.8 2.4 MIXNG WIND DIR..NE NE NE NE N NE NE NE E SE S S MIXNG WIND SPD..14 16 16 16 15 12 9 7 5 2 1 2 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT)...THEN BECOMING PARTLY CLOUDY (40-50 PERCENT). SHOWERS LIKELY EARLY IN THE EVENING. MIN TEMPERATURE.....AROUND 44. MAX HUMIDITY........100 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS. MIXING HEIGHT.......1700-3200 FT AGL...DECREASING TO 300-1000 FT AGL IN THE LATE EVENING AND OVERNIGHT. TRANSPORT WINDS.....EAST AROUND 2 MPH...BECOMING SOUTHWEST 1 TO 5 MPH. VENTILATION RATE....VERY POOR (800-7600 FT-MPH). .TUESDAY... SKY/WEATHER.........SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 72. MIN HUMIDITY........35 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING NORTHWEST 5 TO 6 MPH IN THE LATE MORNING AND EARLY AFTERNOON...THEN BECOMING LIGHT LATE. MIXING HEIGHT.......300-1900 FT AGL...INCREASING TO 8300-8500 FT AGL. TRANSPORT WINDS.....NORTHWEST 6 TO 15 MPH. VENTILATION RATE....VERY POOR TO POOR (1200-39500 FT-MPH)...INCREASING TO GOOD (65600-99600 FT-MPH) LATE IN THE MORNING. FORECASTER...WAMSLEY REQUESTED BY...TIM BLUMENSCHINE TYPE OF REQUEST...PRESCRIBED .TAG 20090511.WWIEA.01/AKQ