FNUS71 KAKQ 131212 FWSAKQ SPOT FORECAST FOR PGP UNITS 17 18 19...TNC NATIONAL WEATHER SERVICE WAKEFIELD VA 712 AM EST MON FEB 13 2012 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... ARCTIC HIGH PRESSURE SETTLES OVER THE MID ATLANTIC REGION TONIGHT. THE HIGH MOVES OFF THE SOUTHEAST COAST MONDAY AFTERNOON...ALLOWING FOR MODERATING TEMPERATURES. WEAK LOW PRESSURE MOVES ACROSS THE CAROLINAS TUESDAY. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 47. MIN HUMIDITY........20 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTHWEST 5 TO 7 MPH IN THE LATE MORNING AND AFTERNOON. ADI.................8...INCREASING TO 28. LVORI...............3. CHANCE OF PCPN......0 PERCENT. MIXING HEIGHT.......300-2100 FT AGL...INCREASING TO 2300-2600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 6 TO 10 MPH. VENTILATION RATE....VERY POOR (2000-24300 FT-MPH). HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. TIME (EST) 12P 1PM 2PM 3PM 4PM 5PM SKY (%).............6 7 11 15 19 22 WEATHER COV......... WEATHER TYPE........ TSTM COV............ TEMP................43 47 47 46 46 44 RH..................29 25 26 28 29 32 CHC OF PCPN (%).....0 0 0 0 0 0 MIX HGT (KFT).......2.1 2.6 2.6 2.6 2.6 2.3 20 FT WIND DIR......SW SW SW SW SW SW 20 FT WIND SPD......6 6 6 6 7 6 20 FT WIND GUST.....10 10 10 10 10 10 TRANSP WIND DIR.....W W W SW SW SW TRANSP WIND SPD.....6 6 8 9 10 9 VRATE KT-FT/1000....10 13 17 22 24 18 LVORI...............2 2 2 2 1 2 ADI.................15 17 24 27 31 25 HAINES INDEX........4 4 4 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT)...THEN BECOMING MOSTLY CLOUDY (65-75 PERCENT). MIN TEMPERATURE.....AROUND 31. MAX HUMIDITY........72 PERCENT. WIND (20FT/2MIN)....SOUTHWEST WINDS AROUND 5 MPH EARLY IN THE EVENING...BECOMING LIGHT...THEN BECOMING SOUTHWEST AROUND 5 MPH IN THE LATE EVENING AND OVERNIGHT. ADI.................6. LVORI...............3. CHANCE OF PCPN......10 PERCENT. MIXING HEIGHT.......300-1000 FT AGL. TRANSPORT WINDS.....SOUTHWEST 5 TO 7 MPH. VENTILATION RATE....VERY POOR (1000-6000 FT-MPH). HAINES INDEX........5 ORMODERATEPOTENTIAL. TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM SKY (%).............26 30 39 47 56 64 73 81 82 83 84 85 WEATHER COV......... WEATHER TYPE........ TSTM COV............ TEMP................42 40 39 37 36 35 34 32 31 32 33 33 RH..................36 41 44 50 54 56 61 69 72 72 69 69 CHC OF PCPN (%).....0 10 10 10 10 10 10 10 10 10 10 10 MIX HGT (KFT).......1.0 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 20 FT WIND DIR......SW SW SW SW SW SW SW SW SW SW SW SW 20 FT WIND SPD......5 3 3 3 5 5 5 5 5 5 5 5 20 FT WIND GUST..... 5 5 5 TRANSP WIND DIR.....S S S S S S SW SW SW SW SW SW TRANSP WIND SPD.....7 5 5 6 6 6 6 6 6 6 6 6 VRATE KT-FT/1000....6 1 1 1 1 1 1 1 1 1 1 1 LVORI...............2 2 2 2 2 3 3 3 3 3 3 3 ADI.................9 5 5 6 4 4 4 4 3 3 3 3 HAINES INDEX........5 5 5 5 5 5 5 5 5 5 5 5 .TUESDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). MAX TEMPERATURE.....AROUND 55. MIN HUMIDITY........33 PERCENT. WIND (20FT/2MIN)....SOUTHWEST WINDS 5 TO 9 MPH. ADI.................7...INCREASING TO 23 LATE IN THE MORNING...THEN INCREASING TO 36 EARLY IN THE AFTERNOON...INCREASING TO 51 IN THE AFTERNOON...DECREASING TO 39. CHANCE OF PCPN......10 PERCENT. MIXING HEIGHT.......300-1700 FT AGL...INCREASING TO 2400-3400 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 6 TO 13 MPH...INCREASING TO 16 TO 22 MPH IN THE AFTERNOON. VENTILATION RATE....VERY POOR TO POOR (1200-35100 FT-MPH)...INCREASING TO POOR TO GOOD (37000-63400 FT-MPH) IN THE AFTERNOON. HAINES INDEX........5 ORMODERATEPOTENTIAL. TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).............85 86 86 85 84 84 83 83 80 77 74 71 WEATHER COV......... WEATHER TYPE........ TSTM COV............ TEMP................34 36 38 40 44 48 50 52 53 55 53 52 RH..................69 64 59 57 49 42 41 38 38 37 41 44 CHC OF PCPN (%).....10 10 10 10 10 10 10 10 10 10 10 10 MIX HGT (KFT).......0.3 0.3 0.5 0.7 0.9 1.7 2.6 3.4 3.4 3.3 3.4 2.4 20 FT WIND DIR......SW S SW SW SW SW SW SW SW SW SW SW 20 FT WIND SPD......5 5 5 6 7 7 8 9 8 8 7 6 20 FT WIND GUST..... 10 10 15 15 20 20 15 15 15 TRANSP WIND DIR.....S S S S SW SW SW SW SW SW SW SW TRANSP WIND SPD.....6 6 7 8 9 13 16 18 21 22 21 18 VRATE KT-FT/1000....1 1 3 5 7 19 35 55 61 63 63 37 ADI.................3 3 3 5 11 23 36 47 53 55 53 39 HAINES INDEX........5 5 5 5 5 5 5 5 5 5 5 5 FORECASTER...ORROCK REQUESTED BY...BOBBY CLONTZ TYPE OF REQUEST...PRESCRIBED .TAG 20120213.PGPUN.01/AKQ