FNUS76 KPQR 022244 FWSPQR SPOT FORECAST FOR SCOTT MTN...USFS WNF NATIONAL WEATHER SERVICE PORTLAND OR 340 PM PDT THU SEP 2 2010 FORECAST IS BASED ON REQUEST TIME OF 1450 PDT ON SEPTEMBER 02. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...THERMAL TROUGH PASSAGE FRIDAY MORNING... ...MUCH COOLER THIS WEEKEND... .DISCUSSION...A SURFACE THERMAL TROUGH NEAR THE COAST AT 1500 WILL BE OVER THE WILLAMETTE VALLEY THIS EVENING...BUT WEAKEN AS IT MOVES INLAND. EXPECT POOR TO MODERATE HUMIDITY RECOVERY TONIGHT ON THE UPPER PARTS OF THE FIRE...ESPECIALLY NEAR THE LAVA FIELDS. THE THERMAL TROUGH DRIFTS OVER THE FIRE AROUND 1200 FRIDAY. IT WILL BE JUST AS WARM FRIDAY...MAYBE A LITTLE WARMER...WITH SLIGHTLY LOWER DAYTIME HUMIDITY. THERE IS ALSO THE POTENTIAL FOR AREAS OF MID-LEVEL HAINES 6 DURING THROUGH EARLY AFTERNOON. THERE COULD BE JUST ENOUGH INSTABILITY FOR A SLIM THREAT OF AFTERNOON THUNDERSTORMS NEAR THE CREST. ONSHORE FLOW WILL BEGIN DURING THE AFTERNOON...AND INCREASE LATE IN THE DAY. BREEZY CONDITIONS WILL DEVELOP OVER THE HIGHER RIDGES. ONSHORE FLOW INTENSIFIES FRIDAY NIGHT AND SATURDAY. IT WILL BE MUCH COOLER THIS WEEKEND. DAYTIME TEMPERATURES REMAIN BELOW NORMAL EARLY NEXT WEEK...BUT WILL WARM A LITTLE AROUND THE MIDDLE OF THE WEEK. CHANCE OF WETTING RAIN (CWR) 0.25 INCHES OR GREATER. FORECAST WINDS ARE 10 MINUTE AVERAGES 20 FT ABOVE VEGETATION. THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS. .FRIDAY... SKY/WEATHER.........SUNNY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS NEAR THE CREST LATE IN THE AFTERNOON. CWR (%).............0 PERCENT. MAX TEMPERATURE.....73 TO 80. MIN HUMIDITY........23 TO 33 PERCENT. WIND (20 FT)........RIDGETOP - SOUTHEAST 3 TO 8 MPH THROUGH THE MORNING. WIND TURNING TO WEST TO NORTHWEST 6 TO 10 MPH BY 1600. LATE-DAY GUSTS TO 20 MPH EXPOSED RIDGES. SLOPE/VALLEY - UP-SLOPE 2-7 MPH...BUT BECOMING MORE SOUTHWEST TO WEST AFTER 1400. WIND INCREASING TO 5-10 MPH LATE IN THE DAY WITH GUSTS TO 18 MPH OPEN VALLEYS. TIME (PDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM TEMP............48-53 57-62 68-72 75-80 75-80 75-80 RH..............50-60 45-55 32-40 24-32 24-32 24-32 20 FT WIND......NE-E 3-8 NE-E 2-6 NW-N 2-6 NW-N 2-6 W-NW 4-8 W-NW 6-12 MAX GUST.....15 5 12 10 10 15 20 CWR.............0 0 0 0 0 0 ***THE 20 FT WIND AND MAX GUST FORECAST IS PRIMARILY FOR RIDGES. THE PRE-DOMINANT WIND ELSEWHERE AFTER 0800 WILL BE SLOPE-DRIVEN. .FRIDAY NIGHT... SKY/WEATHER.........PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS NEAR THE CREST THROUGH 2100. CWR (%).............0 PERCENT. MIN TEMPERATURE.....36 TO 42. MAX HUMIDITY........AT OR ABOVE 80 PERCENT. WIND (20 FT)........RIDGETOP - WEST TO NORTHWEST 7 TO 12 MPH THROUGH 2100 WITH GUSTS TO 24 MPH. WIND EASING TO 5 TO 10 MPH OVERNIGHT. SLOPE/VALLEY - SOUTHWEST TO WEST 5 TO 10 MPH THROUGH THE EVENING. GUSTS TO 18 MPH OPEN AREAS. WIND BECOMING DOWN-SLOPE OR LOCAL DRAINAGE AFTER DARK. .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY IN THE MORNING THEN PARTLY CLOUDY. CWR (%).............0 PERCENT. MAX TEMPERATURE.....MUCH COOLER. HIGHS 58 TO 64. MIN HUMIDITY........42 TO 52 PERCENT. WIND (20 FT)........RIDGETOP - WEST TO NORTHWEST 5 TO 10 MPH IN THE MORNING THEN 8 TO 15 MPH. GUSTS UP TO 28 MPH...STRONGEST EXPOSED RIDGES. SLOPE/VALLEY - UP-SLOPE 2 TO 7 MPH...BUT MORE WEST TO NORTHWEST 6 TO 11 MPH IN THE AFTERNOON. GUSTS TO 22 MPH OPEN AREAS. .EXTENDED FORECAST SUNDAY THROUGH TUESDAY... .SUNDAY...MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS 36 TO 42. HIGHS 55 TO 62. MINIMUM RH 55 TO 65 PERCENT. NORTHWEST DAYTIME RIDGETOP WIND 10 TO 15 MPH. GUSTS UP TO 25 MPH. .LABOR DAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 37 TO 43. HIGHS 57 TO 63. MINIMUM RH 50 TO 60 PERCENT. WEST TO NORTHWEST RIDGETOP WIND 7 TO 12 MPH. GUSTS TO 20 MPH. .TUESDAY...MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 38 TO 44. HIGHS 56 TO 63. MINIMUM RH 55 TO 70 PERCENT. WEST TO NORTHWEST RIDGETOP WIND 7 TO 12 MPH. GUSTS TO 20 MPH. $$ FORECASTER...WEISHAAR REQUESTED BY...HEIDI GILLESPIE REASON FOR REQUEST...WILDFIRE .TAG 20100902.SCOTT.01/PQR