FNUS71 KRNK 291343 FWSRNK SPOT FORECAST FOR BIG WILSON...USFS NATIONAL WEATHER SERVICE BLACKSBURG VA 943 AM EDT THU MAR 29 2012 FORECAST GENERATED FOR INGALLS FIELD AIRPORT PER REQUEST FROM USFS... WITH FOCUS ON POTENTIAL BURN FOR FRIDAY. .DISCUSSION... A WARM FRONTAL BOUNDARY WILL MOVE THROUGH FROM THE SOUTHWEST FRIDAY MORNING AND WILL SHIFT RIDGE TOP WINDS FROM THE NORTHWEST TO THE SOUTHWEST FOR MOST OF THE DAY. EARLY MORNING WINDS WILL BE DOMINATED BY LOCAL DRAINAGE... WITH UPSLOPE SOUTH TO SOUTHEAST WINDS FROM THE VALLEY...TURNING MORE SOUTHWESTERLY BY AFTERNOON. A CHANCE FOR SHOWERS AND THUNDERSTORMS WILL MOVE IN LATE IN THE AFTERNOON AND EVENING. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). MIN TEMPERATURE.....AROUND 41. MAX HUMIDITY........72 PERCENT. WIND (20 FT)........NORTHWEST WINDS 6 TO 11 MPH WITH GUSTS UP TO 20 MPH UNTIL EARLY MORNING...BECOMING LIGHT AND VARIABLE. CWR (0.01 IN).......0 PERCENT. MIXING HEIGHT.......300 FT AGL. TRANSPORT WINDS.....WEST AROUND 12 MPH...BECOMING SOUTH 0 TO 6 MPH. HAINES INDEX........3 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).............0 0 2 5 9 13 WEATHER COV......... WEATHER TYPE........NONE NONE NONE NONE NONE NONE TSTM COV............ TEMP................55 52 49 47 46 45 RH..................39 45 50 54 56 58 20 FT WIND..........NW 9 NW 7 NW 6 NW 5 NW 4 SW 3 20 FT WIND GUST.....20 15 15 15 10 5 MIX HGT (FT)........1400 300 300 300 300 300 TRANSPORT WIND......W 12 S 0 S 0 S 0 S 0 S 0 CWR.................0 0 0 0 0 0 HAINES INDEX........3 3 4 4 5 5 .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT)...THEN BECOMING MOSTLY CLOUDY (65-75 PERCENT). A CHANCE OF SHOWERS BY MID AFTERNOON. MAX TEMPERATURE.....AROUND 64. MIN HUMIDITY........43 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 5 TO 10 MPH WITH GUSTS UP TO 20 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS BY MID AFTERNOON AFTERNOON. CWR (0.01 IN).......30 PERCENT. MIXING HEIGHT.......2200 FT AGL...INCREASING TO 2900 FT AGL LATE. TRANSPORT WINDS.....SOUTH 0 TO 6 MPH...INCREASING TO SOUTHWEST AROUND 24 MPH. HAINES INDEX........3 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).............18 23 26 40 68 69 WEATHER COV......... S CHC CHANCE CHANCE WEATHER TYPE........NONE NONE NONE RNSHWR RNSHWR RNSHWR TSTM COV............ S CHC S CHC TEMP................43 44 50 56 59 62 RH..................62 72 58 51 47 44 20 FT WIND..........S 3 SW 5 S 6 S 6 SW 6 SW 8 20 FT WIND GUST.....10 10 15 15 15 20 MIX HGT (FT)........300 300 700 1000 900 2200 TRANSPORT WIND......S 0 S 0 S 14 SW 17 SW 13 SW 22 CWR.................0 0 10 20 30 30 HAINES INDEX........4 3 4 5 3 3 $$ FORECASTER...KEIGHTON REQUESTED BY...STEVE SMESTAD TYPE OF REQUEST...PRESCRIBED .TAG 20120329.BIGWI.01/RNK