FNUS76 KPDT 191453
FWSPDT

SPOT FORECAST FOR TOPPENISH HQ...FWS
NATIONAL WEATHER SERVICE PENDLETON OR
731 AM PDT TUE APR 19 2011

FORECAST IS BASED ON IGNITION TIME OF 1000 PDT ON APRIL 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...CUMULUS CLOUDS WILL DEVELOP THIS AFTERNOON AS A
DISTURBANCE PASSES ACROSS NORTHEASTERN WASHINGTON. INVERSION WILL
LIKELY DISSIPATE BY IGNITION TIME WITH EXCELLENT MIXING HEIGHTS
EXPECTED BY EARLY AFTERNOON. UNFORTUNATELY, SURFACE WINDS AND WINDS
ALOFT WILL BE ON THE LIGHTER SIDE RESULTING IN LITTLE HORIZONTAL
SMOKE TRANSPORT. INVERSION BEGINS SETTING UP AGAIN AROUND SUNSET
WITH A TOP AROUND 2500 FEET MSL.

***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***
***WINDS ARE 20 FOOT 10 MINUTE AVERAGES***
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***
***FORECAST IS VALID FOR 12 HOURS AFTER ISSUANCE***

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY. SOME
                    MODERATE CUMULUS POSSIBLE AND MAINLY EAST OF THE
                    BURN SITE.
CWR.................0.
MAX TEMPERATURE.....55.
MIN HUMIDITY........23 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 2 TO 5 MPH EARLY IN THE MORNING
                    BECOMING LIGHT LESS THAN 5 MPH.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 7500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST 6 MPH BECOMING LIGHT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0.
MIN TEMPERATURE.....32.
MAX HUMIDITY........67 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 4 TO 9 MPH.
MIXING HEIGHT.......7500 FT AGL DECREASING TO NEAR SURFACE AFTER
                    SUNSET.
TRANSPORT WINDS.....NORTHWEST 3 MPH BECOMING LIGHT AFTER SUNSET.

.WEDNESDAY...

SKY/WEATHER.........INCREASING CLOUDS.
CWR.................0.
MAX TEMPERATURE.....57.
MIN HUMIDITY........28 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 3 TO 8 MPH.
MIXING HEIGHT.......NEAR SURFACE INCREASING TO 3500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH IN THE MORNING BECOMING
                    LIGHT.

$$
FORECASTER...JON BONK
REQUESTED BY...JACOB GEAR
TYPE OF REQUEST...PRESCRIBED
.TAG 20110419.TOPPE.01/PDT