FNUS71 KAKQ 201233 FWSAKQ SPOT FORECAST FOR PINEY GROVE PRESERVE - UNIT 36...TNC NATIONAL WEATHER SERVICE WAKEFIELD VA 833 AM EDT FRI MAY 20 2011 FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON MAY 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... LOW PRESSURE SLOWLY MOVES ACROSS THE NEW ENGLAND STATES TODAY... THEN PUSHES OFF THE COAST TONIGHT. HIGH PRESSURE BUILDS IN FROM THE WEST SATURDAY...THEN BECOMES ANCHORED OFF THE SOUTHEAST COAST THROUGH THE MIDDLE OF NEXT WEEK. .TODAY... SKY/WEATHER.........MOSTLY SUNNY EARLY THEN BECOMING PARTLY CLOUDY (40-50 PERCENT). A CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF A THUNDERSTORM AROUND 30 PERCENT WITH EARLIEST CHANCE AFTER 2:00 PM. MAX TEMPERATURE.....AROUND 79. MIN HUMIDITY........40 PERCENT. WIND (20FT/2MIN)....WEST 7 TO 9 MPH. OCCASIONAL GUST TO 15 MPH. WINDS MAY VARY BETWEEN SW AND NW THROUGH THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE AFTERNOON. MIXING HEIGHT.......1600 FT AGL...INCREASING TO 7200-7500 FT AGL. TRANSPORT WINDS.....WEST 10 TO 15 MPH. VENTILATION RATE....FAIR TO GOOD (53500-97300 FT-MPH) LATE IN THE MORNING AND AFTERNOON. TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P SKY (%).........40 45 51 56 58 60 63 65 67 69 62 56 WEATHER COV..... CHC CHC CHC CHC CHC SCH WEATHER TYPE.... TSM TSM TSM TSM TSM TSM TEMP............72 75 77 78 78 79 78 77 74 71 68 64 RH..............51 46 43 43 43 42 43 47 53 61 65 75 20 FT WIND DIR..W W W W W W W W W W W W 20 FT WIND SPD..8 9 9 9 8 8 7 5 3 2 2 2 20 FT WIND GUST.11 12 15 15 14 13 10 10 5 5 5 MIX HGT (KFT)...4.2 5.3 6.4 7.5 7.4 7.3 7.2 5.1 3.1 1.0 0.8 0.5 TRANSP WIND DIR.W W W W W W W W W W W W TRANSP WIND SPD.15 15 15 15 15 14 14 14 14 13 9 6 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT)...THEN BECOMING PARTLY CLOUDY (30-40 PERCENT). A CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING...THEN A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING. MIN TEMPERATURE.....AROUND 57. MAX HUMIDITY........90 PERCENT. WIND (20FT/2MIN)....WEST WINDS AROUND 5 MPH EARLY IN THE EVENING...BECOMING LIGHT. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE EVENING. MIXING HEIGHT.......5100 FT AGL...DECREASING TO 300-1000 FT AGL. TRANSPORT WINDS.....WEST 6 TO 14 MPH...DECREASING TO 1 TO 3 MPH LATE IN THE EVENING. VENTILATION RATE....POOR TO GOOD (36600-62000 FT-MPH)...DECREASING TO VERY POOR (400-11200 FT-MPH) EARLY IN THE EVENING. .SATURDAY... SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 83. MIN HUMIDITY........39 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING NORTHWEST AROUND 5 MPH LATE IN THE MORNING...THEN BECOMING LIGHT LATE. MIXING HEIGHT.......300-1900 FT AGL...INCREASING TO 5900-7100 FT AGL. TRANSPORT WINDS.....NORTHWEST 5 TO 14 MPH. VENTILATION RATE....VERY POOR TO POOR (1100-39000 FT-MPH)...INCREASING TO GOOD (60400-84200 FT-MPH) LATE IN THE MORNING. FORECASTER...FOSTER REQUESTED BY...BOBBY CLONTZ TYPE OF REQUEST...PRESCRIBED .TAG 20110520.PINEY.01/AKQ