FNUS71 KAKQ 251104 FWSAKQ SPOT FORECAST FOR GRIFFITHS NECK...MD DNR FOREST SERVICE NATIONAL WEATHER SERVICE WAKEFIELD VA 704 AM EDT THU MAR 25 2010 FORECAST IS BASED ON IGNITION TIME OF 0710 EDT ON MARCH 25. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... ...BELOW NORMAL RH AND GOOD MIXING FOREAST FOR THURSDAY... HIGH PRESSURE OFF THE SOUTHEASTERN COAST PROVIDES WARM SOUTHERLY FLOW TO THE AREA TODAY. LOW PRESSURE OVER THE MID MISSISSIPPI VALLEY THIS MORNING...WILL SLIDE ACROSS THE MID ATLANTIC STATES TONIGHT AND OFF THE COAST FRIDAY MORNING. A STRONG COLD FRONT MOVES SOUTHWARD DOWN THE EASTERN SEABOARD FRIDAY. HIGH PRESSURE FROM EASTERN CANADA RETURNS ON SATURDAY. ANOTHER LOW PRESSURE SYSTEM MOVES THROUGH THE AREA SUNDAY NIGHT INTO MONDAY. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 70. MIN HUMIDITY........34 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTH 7 TO 15 MPH WITH GUSTS UP TO 25 MPH IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......300-1200 FT AGL. TRANSPORT WINDS.....SOUTH 6 TO 15 MPH...INCREASING TO 17 TO 22 MPH IN THE AFTERNOON. VENTILATION RATE....VERY POOR (1300-22000 FT-MPH). TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........21 24 27 31 34 37 40 40 40 39 44 49 WEATHER COV..... WEATHER TYPE.... TEMP............44 48 52 58 61 64 66 68 69 69 68 67 RH..............82 76 71 66 57 51 46 43 39 36 40 48 20 FT WIND DIR..SE SE S S S S S S S S S S 20 FT WIND SPD..3 5 8 9 10 11 12 12 12 13 13 12 20 FT WIND GUST.5 10 15 20 20 25 25 25 25 25 25 25 MIX HGT (KFT)...0.3 0.3 0.3 0.3 0.6 0.9 1.2 1.2 0.9 0.6 0.3 0.3 TRANSP WIND DIR.SE S S S S S S S S S S S TRANSP WIND SPD.7 9 13 15 17 20 21 22 22 22 21 20 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT)...THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT). A CHANCE OF SHOWERS IN THE EVENING...THEN RAIN AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 49. MAX HUMIDITY........100 PERCENT. WIND (20FT/2MIN)....WEST WINDS 6 TO 14 MPH WITH GUSTS UP TO 25 MPH. MIXING HEIGHT.......300 FT AGL. TRANSPORT WINDS.....SOUTH 16 TO 20 MPH. VENTILATION RATE....VERY POOR (3600-5500 FT-MPH). .FRIDAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT)...THEN BECOMING PARTLY SUNNY (55-65 PERCENT). RAIN IN THE MORNING...THEN SHOWERS LIKELY EARLY IN THE AFTERNOON. A CHANCE OF SHOWERS EARLY IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 53. MIN HUMIDITY........46 PERCENT. WIND (20FT/2MIN)....NORTH WINDS 7 TO 16 MPH WITH GUSTS UP TO 30 MPH...INCREASING TO 16 TO 18 MPH WITH GUSTS UP TO 35 MPH LATE IN THE MORNING. MIXING HEIGHT.......300-2200 FT AGL...INCREASING TO 3100-4200 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....SOUTHWEST AROUND 16 MPH...BECOMING NORTH 17 TO 23 MPH EARLY IN THE MORNING...THEN INCREASING TO 24 TO 32 MPH IN THE LATE MORNING AND AFTERNOON. VENTILATION RATE....VERY POOR (4000-25400 FT-MPH)...INCREASING TO FAIR TO GOOD (54200-96700 FT-MPH) IN THE LATE MORNING AND AFTERNOON. FORECASTER...SEYMOUR REQUESTED BY...CHRIS ROBERTSON TYPE OF REQUEST...PRESCRIBED .TAG 20100325.GRIFF.01/AKQ