FNUS71 KAKQ 151044 FWSAKQ SPOT FORECAST FOR ANTICOH PINES UNIT 3...DCR-DNH NATIONAL WEATHER SERVICE WAKEFIELD VA 644 AM EDT FRI APR 15 2011 FORECAST IS BASED ON IGNITION TIME OF 1030 EDT ON APRIL 15. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE BUILDS ACROSS NEW ENGLAND AND ATLANTIC CANADA TODAY AND TONIGHT. MEANWHILE...LOW PRESSURE OVER THE CENTRAL PLAINS TODAY TRAVERSES THE MID MISSISSIPPI VALLEY TONIGHT...AND THEN TRACKS ACROSS THE GREAT LAKES SATURDAY. A COLD FRONT ASSOCIATED WITH THIS LOW PRESSURE SYSTEM WILL APPROACH THE MID ATLANTIC SATURDAY...AND PUSH THROUGH THE REGION DURING THE EVENING. HIGH PRESSURE BUILDS ACROSS THE SOUTHEAST AND MID ATLANTIC SUNDAY INTO NEXT WEEK. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 69. MIN HUMIDITY........43 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING EAST 5 TO 12 MPH WITH GUSTS UP TO 20 MPH IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......300-2200 FT AGL...INCREASING TO 3100-3900 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....EAST 1 TO 7 MPH...INCREASING TO 12 TO 17 MPH IN THE LATE MORNING AND AFTERNOON. VENTILATION RATE....VERY POOR TO POOR (300-44400 FT-MPH)...INCREASING TO FAIR (48500-54700 FT-MPH) IN THE AFTERNOON. TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM SKY (%).........13 14 15 16 27 39 50 61 73 84 87 89 WEATHER COV..... WEATHER TYPE.... TEMP............64 66 67 67 67 67 66 65 62 59 56 55 RH..............62 50 47 45 47 48 52 58 64 74 77 80 20 FT WIND DIR..E E E E E E E E E E E E 20 FT WIND SPD..8 9 9 9 9 9 9 9 9 9 9 9 20 FT WIND GUST.15 15 15 15 20 20 20 20 15 15 15 15 MIX HGT (KFT)...3.1 3.4 3.6 3.9 3.9 3.7 3.5 3.2 2.8 2.4 1.9 1.8 TRANSP WIND DIR.E E E E E E E E E E E E TRANSP WIND SPD.16 17 17 17 16 16 17 18 20 21 21 20 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). A SLIGHT CHANCE OF SHOWERS LATE. MIN TEMPERATURE.....AROUND 54. MAX HUMIDITY........93 PERCENT. WIND (20FT/2MIN)....EAST WINDS 7 TO 10 MPH. MIXING HEIGHT.......900-2800 FT AGL...DECREASING TO 300-600 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....EAST 17 TO 21 MPH. VENTILATION RATE....VERY POOR TO FAIR (3700-45000 FT-MPH). .SATURDAY... SKY/WEATHER.........CLOUDY (95-100 PERCENT). A CHANCE OF SHOWERS IN THE MORNING...THEN SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 70. MIN HUMIDITY........62 PERCENT. WIND (20FT/2MIN)....SOUTH WINDS 10 TO 17 MPH. GUSTS UP TO 30 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE. MIXING HEIGHT.......300-1900 FT AGL...INCREASING TO 2400-3300 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....SOUTHEAST 18 TO 26 MPH...INCREASING TO 29 TO 36 MPH LATE IN THE MORNING...THEN INCREASING TO 37 TO 44 MPH IN THE AFTERNOON...DECREASING TO AROUND 32 MPH LATE. VENTILATION RATE....VERY POOR TO FAIR (4100-46600 FT-MPH)...INCREASING TO GOOD (72300-109000 FT-MPH) LATE IN THE MORNING...THEN INCREASING TO GOOD TO EXCELLENT (85100-123400 FT-MPH) EARLY IN THE AFTERNOON...DECREASING TO GOOD (67200 FT-MPH) LATE. FORECASTER...MONTEFUSCO REQUESTED BY...REBECCA WILSON TYPE OF REQUEST...PRESCRIBED .TAG 20110415.ANTIC.01/AKQ