FNUS76 KSEW 100026
FWSSEW

SPOT FORECAST FOR RAINBOW BRIDGE FIRE...NPS NORTH CASCADES
NATIONAL WEATHER SERVICE SEATTLE WA
526 PM PDT MON AUG 9 2010

FORECAST IS BASED ON REQUEST TIME OF 1710 PDT ON AUGUST 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...AN UPPER LOW OVER WASHINGTON WILL GRADUALLY MOVE
INTO NORTHERN IDAHO LATE WEDNESDAY. THIS LOW WILL MAINTAIN A
THREAT OF SHOWERS OVER THE FIRE AREA THROUGH WEDNESDAY. THERE IS
ALSO THE CHANCE FOR THUNDERSTORMS INTO WEDNESDAY. TEMPERATURES
WILL REMAIN ON THE COOL SIDE THROUGH TUESDAY AND WEDNESDAY WITH
HIGHER THAN NORMAL RELATIVE HUMIDITY VALUES.

AN UPPER LEVEL RIDGE WILL BEGIN TO NUDGE INTO THE REGION LATE
THURSDAY AND REMAIN IN CONTROL OF OUR WEATHER INTO EARLY NEXT WEEK.
THIS WILL BRING ABOUT A SIGNIFICANT DRAMATIC WARMING AND DRYING
TREND.

 FORECAST FOR 20 FOOT WIND SPEED (VALLEYS AND RIDGE TOPS) ARE 10
 MINUTE AVERAGES REFLECTING RAWS WINDS.

.TUESDAY...

SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY WITH A CHANCE
                    THUNDERSTORMS...MAINLY IN THE AFTERNOON.
CWR.................22 PERCENT.
MAX TEMPERATURE.....77 AT 1200 FT...67 AT 3500 FT.
MIN HUMIDITY........33-37 PERCENT AT 1200 FT...40-45 PERCENT
                    AT 3500 FT.
WIND (20 FT)........NORTHWEST WINDS 4 TO 7 MPH LOW ELEVATIONS
                    GUSTING TO 20 MPH LATE AND WEST 2 TO 4 MPH
                    NEAR RIDGES.
HAINES INDEX........2 OR VERY LOW.
LAL.................3.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE EVENING...THEN SLIGHT
                    CHANCE OF SHOWERS AFTER MIDNIGHT.
CWR.................10 PERCENT.
MIN TEMPERATURE.....50-57.
MAX HUMIDITY........77-83 PERCENT.
WIND (20 FT)........WEST WINDS 4 TO 7 MPH LOW ELEVATIONS AND
                    2 TO 4 MPH UPPER SLOPES.
HAINES INDEX........2 OR VERY LOW.
LAL.................3.

.WEDNESDAY...

SKY/WEATHER.........PARTLY SUNNY. SCATTERED SHOWERS IN THE
                    AFTERNOON.
CWR.................LESS THAN 10%.
MAX TEMPERATURE.....83 AT 1200 FT...75 AT 3500 FT.
MIN HUMIDITY........AROUND 27 PERCENT AT 1200 FT AND 35 PERCENT
                    AT 3500 FT.
WIND (20 FT)........NORTHWEST WINDS 4 TO 7 MPH...STRONGEST AT LOWER
                    ELEVATIONS.
HAINES INDEX........2 OR VERY LOW.
LAL.................2.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE UPPER 80S.
NORTHWEST WINDS 3 TO 6 MPH.
.FRIDAY AND SATURDAY...
MOSTLY CLEAR. LOWS IN THE MID TO UPPER 50S. HIGHS IN THE UPPER
80S TO LOWER 90S. UPSLOPE/UPVALLEY 5 TO 8 MPH.

$$
FORECASTER...CERNIGLIA
REQUESTED BY...LESHA HASTINGS-SKAER
TYPE OF REQUEST...WILDFIRE
.TAG 20100809.RAINB.01/SEW