FNUS76 KPQR 141413
FWSPQR

SPOT FORECAST FOR BT-3  32...USFS WNF
NATIONAL WEATHER SERVICE PORTLAND OR
713 AM PDT MON MAY 14 2012

FORECAST IS BASED ON IGNITION TIME OF 1000 PDT ON MAY 14.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...SLIM THUNDERSTORM THREAT LATE THIS AFTERNOON...
...THERMAL TROUGH PASSAGE THIS MORNING...

.DISCUSSION...AN UPPER LEVEL RIDGE OVER THE PACIFIC NORTHWEST WILL
START TO WEAKEN TODAY AS AN UPPER LOW DRIFTS INTO NORTHERN CALIFORNIA.
SOUTH FLOW ALOFT OVER THE CENTRAL CASCADES DUE TO THE LOW WILL CONTINUE
TODAY...THEN TURN SOUTHEAST TO EAST TONIGHT. ALTHOUGH THE AIR MASS
OVER THE BURN AREA IS EXTREMELY DRY...THE SOUTH FLOW ALOFT WILL
RESULT IN ENOUGH INSTABILITY FOR A SMALL THREAT OF THUNDERSTORMS. IN
ADDITION...A SURFACE THERMAL TROUGH CENTERED OVER THE BURN SITE
THIS MORNING IS EXPECTED TO DRIFT EAST OF THE CASCADES BY EARLY
AFTERNOON. THERE SHOULD NOT BE ENOUGH ONSHORE LOW-LEVEL FLOW IN
THE AFTERNOON TO OVERCOME THE LOCAL SLOPE WIND. THE ONSHORE FLOW
INCREASES TONIGHT AND TUESDAY RESULTING IN COOLER CONDITIONS.


.TODAY...

SKY/WEATHER.........MOSTLY SUNNY. PARTLY CLOUDY IN THE AFTERNOON
                    WITH A SLIGHT CHANCE OF THUNDERSTORMS.
MAX TEMPERATURE.....MID 80S.
MIN HUMIDITY........20 TO 25 PERCENT.
WIND (20 FT)........SOUTH TO 5 MPH THROUGH 1000 THEN 5 TO 10 MPH.
                    GUSTY AND ERRATIC WIND NEAR ANY THUNDERSTORM.

TIME (PDT)      10 AM  NOON   2 PM   4 PM

TEMP............74     80     84      83
RH..............35     25     22      25
20 FT WIND......S 0-5  S 4-8  S 5-10  S 5-10
   MAX GUST.....5      10     13      15

.TONIGHT...

SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY. A SLIGHT CHANCE OF
                    THUNDERSTORMS UNTIL 2100.
MIN TEMPERATURE.....53 TO 57.
MAX HUMIDITY........50 TO 60 PERCENT.
WIND (20 FT)........SOUTH 5 TO 10 MPH EARLY WITH GUSTS UP TO 15 MPH.
                    WIND BECOMING DOWN SLOPE TO 5 MPH BY 2100.

.TUESDAY...

SKY/WEATHER.........PARTLY SUNNY IN THE MORNING THEN BECOMING SUNNY.
MAX TEMPERATURE.....77 TO 80.
MIN HUMIDITY........26 TO 32.
WIND (20 FT)........DOWN SLOPE TO 5 MPH AROUND SUNRISE THEN SOUTH 5 TO
                    10 MPH. WIND SHIFTING TO SOUTHWEST 6 TO 12 MPH IN
                    THE AFTERNOON WITH GUSTS UP TO 15 MPH.

$$
FORECASTER...WEISHAAR
REQUESTED BY...BRENDA HALLMARK
REASON FOR REQUEST...PRESCRIBED
.TAG 20120514.BT332.01/PQR