FNUS71 KAKQ 071113 FWSAKQ SPOT FORECAST FOR GRIFFITHS NECK...MARYLAND DEPARTMENT OF NATURAL RESOURCES (MDDNR) NATIONAL WEATHER SERVICE WAKEFIELD VA 713 AM EDT WED APR 7 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON APRIL 07. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... RELATIVE HUMIDITY VALUES EXPECTED IN THE 25 TO 30 PERCENT RANGE OVER MUCH OF THE AREA THIS AFTERNOON. HIGH PRESSURE WILL REMAIN OFF THE SOUTHEAST COAST TODAY THROUGH THURSDAY AFTERNOON...MAINTAINING DRY AND UNSEASONABLY WARM WEATHER. A COLD FRONT APPROACHES FROM THE WEST THURSDAY EVENING...THEN PUSHES ACROSS THE AREA BY FRIDAY MORNING...BRINGING A GOOD CHANCE FOR SHOWERS AND SCATTERED THUNDERSTORMS. HIGH PRESSURE BUILDS INTO THE REGION AGAIN LATE FRIDAY THROUGH THE UPCOMING WEEKEND...WITH DRY WEATHER AND MORE SEASONABLE TEMPERATURES RETURNING. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 88. MIN HUMIDITY........27 PERCENT. WIND (20FT/2MIN)....SOUTH WINDS 6 TO 10 MPH. MIXING HEIGHT.......300-2200 FT AGL...INCREASING TO 4800-5200 FT AGL. TRANSPORT WINDS.....SOUTHWEST 9 TO 18 MPH. VENTILATION RATE....VERY POOR TO FAIR (2100-47200 FT-MPH)...INCREASING TO GOOD (63100-80400 FT-MPH) IN THE AFTERNOON. TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM SKY (%).........12 13 14 14 15 15 15 16 16 16 16 17 WEATHER COV..... WEATHER TYPE.... TEMP............76 80 83 85 87 87 87 86 82 78 74 73 RH..............40 35 32 30 28 28 29 31 36 42 50 51 20 FT WIND DIR..SW SW SW SW SW SW S S S S S S 20 FT WIND SPD..8 9 9 10 11 11 11 10 9 8 8 8 20 FT WIND GUST.15 15 15 15 20 20 20 18 15 15 15 15 MIX HGT (KFT)...1.5 2.2 3.2 4.2 5.2 5.1 4.9 4.8 3.3 1.8 0.3 0.3 TRANSP WIND DIR.SW SW SW SW SW SW SW S S S S S TRANSP WIND SPD.15 16 17 17 17 18 18 18 16 14 10 10 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). MIN TEMPERATURE.....AROUND 63. MAX HUMIDITY........73 PERCENT. WIND (20FT/2MIN)....SOUTHWEST WINDS 8 TO 10 MPH. MIXING HEIGHT.......1800-3300 FT AGL...DECREASING TO 300 FT AGL EARLY IN THE EVENING. TRANSPORT WINDS.....SOUTH 10 TO 16 MPH. VENTILATION RATE....VERY POOR TO FAIR (2100-47000 FT-MPH). .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). MAX TEMPERATURE.....AROUND 80. MIN HUMIDITY........41 PERCENT. WIND (20FT/2MIN)....SOUTH WINDS 7 TO 16 MPH. GUSTS UP TO 30 MPH LATE IN THE MORNING. MIXING HEIGHT.......300-1900 FT AGL...INCREASING TO 2600-4400 FT AGL LATE IN THE MORNING...THEN DECREASING TO 1700 FT AGL LATE. TRANSPORT WINDS.....SOUTHWEST 15 TO 22 MPH...INCREASING TO 25 TO 31 MPH IN THE AFTERNOON. VENTILATION RATE....VERY POOR TO POOR (3300-34300 FT-MPH)...INCREASING TO FAIR TO GOOD (53800-95600 FT-MPH) LATE IN THE MORNING...THEN INCREASING TO GOOD TO EXCELLENT (68700-117300 FT-MPH) EARLY IN THE AFTERNOON...DECREASING TO POOR (41200 FT-MPH) LATE. FORECASTER...BROWN REQUESTED BY...CHRIS ROBERTSON TYPE OF REQUEST...PRESCRIBED .TAG 20100407.GRIFF.01/AKQ