FNUS71 KRNK 192100 FWSRNK SPOT FORECAST FOR RAINBOW ROCKS...USFS NATIONAL WEATHER SERVICE BLACKSBURG VA 500 PM EDT FRI AUG 19 2011 FORECAST IS BASED ON REQUEST TIME OF 1642 EDT ON AUGUST 19. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... WEAK HIGH PRESSURE WILL REMAIN OVER THE AREA TONIGHT WITH OVERALL DRY CONDITIONS EXPECTED THIS EVENING. COLD FRONT TO THE NORTH MAY PUSH A FEW SHOWERS SOUTH TOWARD THE HIGHLANDS BY MIDNIGHT BUT WILL LIKELY FADE OFF TO THE NORTH UPON APPROACH. OTHERWISE LIGHT WINDS WILL PREVAIL WITH A TRAPPING INVERSION PRODUCING PLENTY OF FOG AS HUMIDITY LEVELS RISE OVERNIGHT. INVERSION SHOULD BREAK BY MID MORNING SATURDAY WITH INCREASING SUNSHINE...BUT ONLY LIGHT MIXING AS WINDS TURN FROM LIGHT NORTHERLY EARLY BACK TO THE SOUTH OR SOUTHEAST IN THE AFTERNOON. HOWEVER SPEEDS SHOULD REMAIN PRETTY LIGHT. OTHERWISE SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED TO BE ISOLATED TO WIDELY SCATTERED ON SATURDAY...WITH THE BEST CHANCES FOR WETTING RAINS FOUND ALONG THE BLUE RIDGE AND POINTS SOUTH. A STRONG COLD FRONT WILL ENTER OUR REGION ON SUNDAY...WHICH WILL BRING BETTER CHANCES FOR RAINFALL. HIGH PRESSURE WILL BUILD IN BEHIND THE COLD FRONT AS IT PASSES THROUGH OUR REGION SUNDAY EVENING...WHICH WILL RESULT IN A NORTHWEST SHIFT IN WIND DIRECTION. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. AREAS OF FOG LATE. MIN TEMPERATURE.....AROUND 60. MAX HUMIDITY........100 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE EVENING. CWR (0.01 IN).......20 PERCENT. MIXING HEIGHT.......4500 FT AGL...DECREASING TO 300 FT AGL. TRANSPORT WINDS.....NORTH 1 TO 5 MPH. EYE LEVEL WINDS.....LIGHT AND VARIABLE WINDS. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).............46 42 37 34 31 26 WEATHER COV.........ISOLTD ISOLTD ISOLTD S CHC PATCHY PATCHY WEATHER TYPE........RNSHWR RNSHWR RNSHWR RNSHWR FOG FOG TSTM COV............ISOLTD ISOLTD ISOLTD S CHC TEMP................77 74 70 67 65 64 RH..................62 67 77 83 84 90 20 FT WIND..........SW 2 S 1 NE 2 N 2 NW 2 NW 1 20 FT WIND GUST.....5 5 5 EYE LEVEL WIND......SW 2 S 1 NE 1 N 1 NW 1 NW 1 EYE LVL WND GST.....5 5 5 CWR.................20 20 20 20 10 10 .SATURDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). AREAS OF FOG EARLY IN THE MORNING. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 87. MIN HUMIDITY........41 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO 6 MPH LATE. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. CWR (0.01 IN).......20 PERCENT. MIXING HEIGHT.......1400 FT AGL...INCREASING TO 7000 FT AGL. TRANSPORT WINDS.....NORTHWEST AROUND 1 MPH...BECOMING SOUTH AROUND 0 MPH EARLY IN THE MORNING...THEN BECOMING EAST 1 TO 2 MPH LATE IN THE MORNING...BECOMING SOUTHWEST 2 TO 5 MPH IN THE AFTERNOON. EYE LEVEL WINDS.....LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO 6 MPH LATE. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).............62 44 26 30 43 56 WEATHER COV.........AREAS AREAS S CHC S CHC WEATHER TYPE........FOG FOG NONE NONE RNSHWR RNSHWR TSTM COV............ S CHC S CHC TEMP................62 65 73 79 83 85 RH..................97 89 70 55 45 41 20 FT WIND..........NW 1 N 1 NW 1 W 2 SE 4 S 6 20 FT WIND GUST..... 5 10 EYE LEVEL WIND......NW 1 N 1 NW 1 W 1 SE 2 S 4 EYE LVL WND GST..... 4 8 CWR.................10 10 10 10 20 20 .SATURDAY NIGHT... SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT)...THEN BECOMING PARTLY CLOUDY (45-55 PERCENT). MIN TEMPERATURE.....AROUND 62. MAX HUMIDITY........100 PERCENT. WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH EARLY IN THE EVENING...BECOMING LIGHT AND VARIABLE. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. CWR (0.01 IN).......20 PERCENT. MIXING HEIGHT.......4800 FT AGL...DECREASING TO 300 FT AGL. TRANSPORT WINDS.....SOUTH 0 TO 6 MPH. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 6 MPH EARLY IN THE EVENING...BECOMING LIGHT AND VARIABLE. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).............60 58 53 50 48 49 WEATHER COV.........S CHC S CHC S CHC S CHC WEATHER TYPE........RNSHWR RNSHWR RNSHWR RNSHWR NONE NONE TSTM COV............S CHC S CHC S CHC S CHC TEMP................83 77 73 69 67 66 RH..................47 64 72 80 86 90 20 FT WIND..........S 5 S 2 S 3 S 3 SE 4 S 5 20 FT WIND GUST.....10 5 5 5 6 8 EYE LEVEL WIND......S 4 S 2 S 2 S 2 SE 2 S 2 EYE LVL WND GST.....10 3 3 3 4 3 CWR.................20 20 20 20 10 10 .SUNDAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). A CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 88. MIN HUMIDITY........48 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING WEST 6 TO 9 MPH IN THE LATE MORNING AND AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE MORNING. CWR (0.01 IN).......40 PERCENT. MIXING HEIGHT.......1800 FT AGL...INCREASING TO 6200 FT AGL. TRANSPORT WINDS.....SOUTH 0 TO 5 MPH...INCREASING TO SOUTHWEST 12 TO 18 MPH LATE IN THE MORNING...THEN INCREASING TO 25 TO 31 MPH EARLY IN THE AFTERNOON...BECOMING WEST 33 TO 37 MPH EARLY IN THE AFTERNOON. EYE LEVEL WINDS.....LIGHT AND VARIABLE WINDS...BECOMING WEST 6 TO 9 MPH IN THE LATE MORNING AND AFTERNOON. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).............52 56 65 73 78 74 WEATHER COV......... CHANCE CHANCE CHANCE CHANCE CHANCE WEATHER TYPE........NONE RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TSTM COV............ CHANCE CHANCE CHANCE CHANCE CHANCE TEMP................64 66 74 80 84 86 RH..................97 91 72 59 51 48 20 FT WIND..........S 2 S 2 SW 5 SW 6 W 8 W 8 20 FT WIND GUST.....5 5 10 15 15 15 EYE LEVEL WIND......S 2 S 1 SW 4 SW 5 W 5 W 5 EYE LVL WND GST.....5 5 8 10 10 12 CWR.................10 30 30 30 40 40 $$ FORECASTER...HUDGINS REQUESTED BY...MONCURE TYPE OF REQUEST...WILDFIRE .TAG 20110819.RAINB.01/RNK