FNUS71 KAKQ 201348 FWSAKQ SPOT FORECAST FOR BLACKWATER UNIT 3...VIRGINIA DEPARTMENT OF FORESTRY (VADOF) NATIONAL WEATHER SERVICE WAKEFIELD VA 948 AM EDT TUE APR 20 2010 FORECAST IS BASED ON IGNITION TIME OF 1400 EDT ON APRIL 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL GRADUALLY WEAKEN OVER THE AREA TODAY...AS A LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHWEST...BRINGING CONTINUED DRY AND MILD WEATHER TO THE REGION. THE LOW WILL MOVE ACROSS NORTH CAROLINA ON WEDNESDAY...BEFORE PUSHING OFFSHORE BY WEDNESDAY EVENING. A WEAK FRONT DROPS SOUTHWARD THURSDAY...BEFORE SLOWLY RETREATING NORTHWARD FRIDAY INTO SATURDAY. .TODAY... SKY/WEATHER.........PARTLY SUNNY (30-50 PERCENT). MAX TEMPERATURE.....AROUND 72. MIN HUMIDITY........26 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTH...SOUTHEAST. MIXING HEIGHT.......INCREASING TO 7000-8000 FT AGL. TRANSPORT WINDS.....WEST 5 TO 8 MPH...BECOMING SW. VENTILATION RATE....INCREASING TO FAIR (53800-57100 FT-MPH). TIME (EDT) 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P MID 1AM SKY (%).........41 44 47 50 55 59 64 65 66 67 68 69 WEATHER COV..... SCH SCH WEATHER TYPE.... RW RW TEMP............71 71 71 70 69 67 63 59 57 56 56 54 RH..............27 28 28 29 34 43 49 53 60 64 66 74 20 FT WIND DIR..W SW SW S SE SE SE SE SE SE SE S 20 FT WIND SPD..3 4 5 5 5 4 4 3 3 3 3 3 20 FT WIND GUST.5 5 6 7 8 6 5 5 5 5 5 5 MIX HGT (KFT)...6.9 8.0 8.0 8.0 5.5 2.9 0.3 0.3 0.3 0.3 0.3 0.3 TRANSP WIND DIR.W W W W SW S S S S S S S TRANSP WIND SPD.7 7 8 8 8 7 7 9 10 13 13 13 .TONIGHT... MAX HUMIDITY........88 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS. MIXING HEIGHT.......5500 FT AGL...DECREASING TO 300 FT AGL. TRANSPORT WINDS.....SOUTHWEST 7 TO 13 MPH. VENTILATION RATE....VERY POOR TO POOR (1500-36200 FT-MPH). FORECASTER...BROWN REQUESTED BY...REBECCA WILSON TYPE OF REQUEST...PRESCRIBED .TAG 20100420.BLACK.01/AKQ