FNUS72 KGSP 151003 FWSGSP SPOT FORECAST FOR GRAPEVINE UNIT 3...USFS NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 603 AM EDT THU MAR 15 2012 FORECAST IS BASED ON IGNITION TIME OF 1030 EDT ON MARCH 15. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...WARM TODAY... .DISCUSSION... HIGH PRESSURE WILL PERSIST OVER THE SOUTHEAST TODAY THROUGH FRIDAY...BUT WITH A WEAK DISTURBANCE PASSING OVERHEAD ON FRIDAY. A BACKDOOR COLD FRONT WILL MOVE SOUTHWARD THROUGH THE MID ATLANTIC REGION ON SATURDAY AND MOVE SOUTH OF THE FORECAST AREA EARLY SUNDAY. STRONG HIGH PRESSURE WILL THEN RETURN TO THE REGION THROUGH THE MIDDLE OF NEXT WEEK. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON. SCATTERED SHOWERS LATE. TEMPERATURE.........71 AT IGNITION...MAX 82. RH..................57 PERCENT AT IGNITION...MIN 32 PERCENT. WIND (20 FT)........WINDS NORTHWEST AT 4 MPH AT IGNITION...BECOMING SOUTH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE AFTERNOON. MIXING HEIGHT.......2100 FT AGL AT IGNITION...INCREASING TO 9300-10100 FT AGL. TRANSPORT WINDS.....NORTHWEST 7 TO 15 MPH...BECOMING WEST 3 TO 6 MPH IN THE AFTERNOON. TIME (EDT) 10 AM NOON 2 PM 4 PM SKY (%).............16 25 43 53 WEATHER COV......... ISOLTD ISOLTD SCTTRD WEATHER TYPE........NONE RNSHWR RNSHWR RNSHWR TEMP................67 75 80 81 RH..................57 44 35 32 20 FT WIND..........NW 3 NW 3 S 3 S 3 20 FT WIND GUST.....10 10 10 5 MIX HGT (FT)........1500 4600 9000 10100 TRANSPORT WIND......NW 10 NW 7 NW 3 W 5 LVORI...............2 2 2 2 ADI.................20 26 18 25 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). A CHANCE OF SHOWERS. TEMPERATURE.........MIN 55. RH..................MAX 89 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS BECOMING DOWNSLOPE. MIXING HEIGHT.......7500 FT AGL...DECREASING TO 300-1900 FT AGL. TRANSPORT WINDS.....WEST 1 TO 5 MPH...BECOMING NORTH 3 TO 5 MPH AFTER MIDNIGHT. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).............61 67 68 71 74 76 WEATHER COV.........CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE WEATHER TYPE........RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP................79 72 67 63 60 58 RH..................35 46 57 67 75 83 20 FT WIND..........S 2 N 1 N 1 N 2 N 2 N 2 20 FT WIND GUST.....5 5 5 5 MIX HGT (FT)........7500 1900 800 300 300 300 TRANSPORT WIND......W 5 N 2 N 1 N 2 N 5 N 5 LVORI...............1 2 3 4 4 5 ADI.................38 1 0 1 2 2 .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). A CHANCE OF SHOWERS AND THUNDERSTORMS. TEMPERATURE.........MAX 80. RH..................MIN 38 PERCENT. WIND (20 FT)........LIGHT NORTH WINDS...BECOMING SOUTH 5 TO 6 MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING HEIGHT.......300-2200 FT AGL...INCREASING TO 7900-9300 FT AGL. TRANSPORT WINDS.....NORTH 3 TO 5 MPH...BECOMING WEST 7 TO 15 MPH IN THE LATE MORNING AND AFTERNOON. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).............79 80 77 75 77 76 WEATHER COV.........CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE WEATHER TYPE........RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP................56 57 66 73 78 79 RH..................89 81 61 48 40 38 20 FT WIND..........N 2 N 2 S 2 S 3 S 5 S 5 20 FT WIND GUST.....5 5 5 5 10 10 MIX HGT (FT)........300 300 1500 4500 7600 9300 TRANSPORT WIND......N 3 N 3 W 7 SW 12 SW 15 W 15 LVORI...............7 5 2 1 1 1 ADI.................2 3 14 32 52 55 $$ FORECASTER...TOMKO REQUESTED BY...ANDY PASCARELLA TYPE OF REQUEST...PRESCRIBED .TAG 20120315.GRAPE.01/GSP