FNUS71 KRNK 181435 FWSRNK SPOT FORECAST FOR LUMBER PLANT FIRE...NC DEPT OF FORESTRY NATIONAL WEATHER SERVICE BLACKSBURG VA 935 AM EST FRI FEB 18 2011 FORECAST IS BASED ON REQUEST TIME OF 0857 EST ON FEBRUARY 18. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SOUTHWEST WINDS WILL BECOMING INCREASINGLY GUSTY THROUGH LATE MORNING INTO THE AFTERNOON AS THE PRESSURE GRADIENT TIGHTENS AHEAD OF AN APPROACHING COLD FRONT. THESE SOUTHWEST WINDS WILL CONTINUE TO BRING LOW LEVEL MOISTURE INTO THE AREA...WHICH WILL KEEP MINIMUM RH VALUES RANGING FROM 35 TO 40 PERCENT ACROSS THE PIEDMONT...AND FROM 40 TO 60 PERCENT FROM THE BLUE RIDGE WEST. THE MAIN FOCUS HOWEVER WILL BE ON THE PASSAGE OF THE COLD FRONT DURING THIS AFTERNOON AND EVENING. ONLY SPOTTY SHOWER ACTIVITY IS EXPECTED TO THE WEST OF THE BLUE RIDGE THROUGH THE EARLY MORNING HOURS OF SATURDAY... AND ANY WETTING RAINFALL IS EXPECTED TO BE SPARSE. WINDS WILL BECOME NORTHWEST THIS EVENING...AND REMAIN GUSTY DURING THE OVERNIGHT HOURS AS HIGH PRESSURE BUILDS INTO THE AREA. WITH DRY AIR MOVING QUICKLY INTO THE AREA...RELATIVE HUMIDITY VALUES EXPECTED TO FALL TO NEAR 20 PERCENT DURING THE AFTERNOON ON SATURDAY. HIGH PRESSURE SLIDES EAST ON SUNDAY...ALLOWING WINDS TO RELAX AND BECOME LIGHT AND VARIABLE ON SUNDAY MORNING...THEN GRADUALLY BECOME SOUTHERLY SUNDAY AFTERNOON. WITH THAT...WE CAN EXPECT SUNDAY AFTERNOON RH VALUES TO REBOUND SLIGHTLY FROM SATURDAY AS MOIST AIR SLOWLY MAKES ITS WAY BACK INTO THE AREA. && .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). A SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........57 PERCENT. WIND (20 FT)........WEST WINDS 15 TO 17 MPH WITH GUSTS UP TO 30 MPH. CWR (0.01 IN).......20 PERCENT. MIXING HEIGHT.......2200 FT AGL...INCREASING TO 3500 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 23 TO 28 MPH. EYE LEVEL WINDS.....WEST WINDS 6 TO 10 MPH. TIME (EST) 8 AM 10 AM NOON 2 PM 4 PM SKY (%).............80 74 67 70 76 WEATHER COV......... S CHC S CHC S CHC WEATHER TYPE........NONE NONE RNSHWR RNSHWR RNSHWR TEMP................52 56 60 63 65 RH..................71 68 65 62 57 20 FT WIND..........W 14 W 14 W 13 W 12 NW 12 20 FT WIND GUST.....30 30 25 30 30 EYE LEVEL WIND......W 3 W 10 W 10 W 9 NW 9 EYE LVL WND GST.....10 20 25 30 30 MIX HGT (FT)........600 1300 2200 3100 3400 TRANSPORT WIND......W 26 W 26 W 28 W 26 W 25 CWR.................10 10 20 20 20 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT)...THEN BECOMING PARTLY CLOUDY (25-35 PERCENT). MIN TEMPERATURE.....AROUND 39. MAX HUMIDITY........80 PERCENT. WIND (20 FT)........NORTHWEST WINDS 15 TO 17 MPH WITH GUSTS UP TO 30 MPH. CWR (0.01 IN).......10 PERCENT. MIXING HEIGHT.......800 FT AGL. TRANSPORT WINDS.....NORTHWEST 22 TO 31 MPH...INCREASING TO 36 TO 38 MPH LATE. EYE LEVEL WINDS.....NORTHWEST WINDS 7 TO 12 MPH. TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).............77 71 56 40 28 19 WEATHER COV......... WEATHER TYPE........NONE NONE NONE NONE NONE NONE TEMP................59 55 51 49 47 46 RH..................68 75 80 80 75 67 20 FT WIND..........NW 12 NW 12 NW 13 NW 13 NW 13 NW 13 20 FT WIND GUST.....25 30 30 30 25 30 EYE LEVEL WIND......NW 9 NW 9 NW 10 NW 10 NW 10 NW 10 EYE LVL WND GST.....25 30 30 30 25 30 MIX HGT (FT)........2500 1700 1100 900 1000 1400 TRANSPORT WIND......NW 23 NW 22 NW 24 NW 23 NW 28 NW 36 CWR.................10 10 10 10 0 0 .SATURDAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 57. MIN HUMIDITY........21 PERCENT. WIND (20 FT)........NORTHWEST WINDS 17 TO 21 MPH. GUSTS UP TO 35 MPH...INCREASING TO 45 MPH EARLY IN THE MORNING...THEN DECREASING TO 35 MPH LATE. CWR (0.01 IN).......10 PERCENT. MIXING HEIGHT.......3300 FT AGL...INCREASING TO 4000 FT AGL EARLY IN THE AFTERNOON. TRANSPORT WINDS.....NORTHWEST 33 TO 40 MPH. EYE LEVEL WINDS.....NORTHWEST WINDS 8 TO 14 MPH. TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).............13 19 18 17 16 16 WEATHER COV......... WEATHER TYPE........NONE NONE NONE NONE NONE NONE TEMP................42 45 48 51 54 56 RH..................64 48 37 29 24 21 20 FT WIND..........NW 14 NW 15 NW 16 NW 17 NW 15 NW 14 20 FT WIND GUST.....30 40 45 45 40 35 EYE LEVEL WIND......NW 10 NW 11 NW 12 NW 13 NW 11 NW 10 EYE LVL WND GST.....30 40 45 45 40 35 MIX HGT (FT)........1400 1800 2500 3100 3600 4000 TRANSPORT WIND......NW 39 NW 40 NW 37 NW 36 NW 33 NW 33 CWR.................0 10 10 10 10 10 $$ FORECASTER...SILVERMAN REQUESTED BY...WAYNE GARST TYPE OF REQUEST...WILDFIRE .TAG 20110218.LUMBE.01/RNK