FNUS75 KMSO 262232
FWSMSO

SPOT FORECAST FOR WEST RIVERSIDE FIRE
NATIONAL WEATHER SERVICE MISSOULA MT
432 PM MDT FRI AUG 26 2011

FORECAST IS BASED ON REQUEST TIME OF 1538 MDT ON AUGUST 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WITH A RIDGE OF HIGH PRESSURE EXPECTED TO REMAIN THE
DOMINANT WEATHER FEATURE...THERE WILL BE ENOUGH OF AN UPPER LEVEL
JET TO KICK UP WESTERLY WINDS ACROSS THE FIRE BY SATURDAY
AFTERNOON...LIKELY AFTER 1300...WITH ADDITIONAL INCREASES IN
WIND SPEED THROUGH THE EVENING HOURS. BECAUSE WINDS WILL BE OUT OF
THE WEST...THOSE PORTIONS OF THE FIRE THAT ARE WEST-FACING WILL
FEEL THE BRUNT OF THE STRONGER GUSTS. IN ADDITION: A WEAK
DISTURBANCE WILL CAUSE UNSTABLE CONDITIONS ONCE AGAIN...AND WHILE
CHANCES ARE LOW FOR THUNDERSTORMS TO AFFECT THE FIRE...THERE WILL
STILL BE A POSSIBILITY IN THE AFTERNOON.

.SATURDAY...

SKY/WEATHER.........BEGINNING MOSTLY SUNNY...INCREASING CLOUDS
THROUGH             THE AFTERNOON. SLIGHT CHANCE OF RAIN
SHOWERS             AND THUNDERSTORMS IN THE AFTERNOON.
CWR.................10 PERCENT.
MAX TEMPERATURE.....BASE...89-95. TOP...70-75.
MIN HUMIDITY........BASE...13-18 PERCENT. TOP...27-33 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 3-7 MPH IN THE MORNING...
                    BECOMING WEST 9-12 MPH WITH HIGHER GUSTS UP
                    TO 15-20 MPH IN THE AFTERNOON AND EVENING.
HAINES INDEX........3 VERY LOW.


.SATURDAY NIGHT...

SKY/WEATHER.........BECOMING MOSTLY CLEAR OVERNIGHT. SLIGHT CHANCE OF
                    RAIN SHOWERS AND THUNDERSTORMS IN THE EVENING.
CWR.................10 PERCENT.
MIN TEMPERATURE.....BASE...49-54. TOP...55-60.
MAX HUMIDITY........BASE...64-69 PERCENT. TOP...56-63 PERCENT.
WIND (20 FT)........WEST AROUND 10-13 MPH IN THE EVENING WITH
                    STRONGER GUSTS AT BOTH BASE AND TOP OF FIRE
                    NEAR 15-20 MPH. BECOMING VARIABLE 3-6 MPH OVERNIGHT.
MIXING HEIGHT.......200 FT AGL.
MIXING WINDS........NORTH 5 MPH.
HAINES INDEX........4 LOW.

.SUNDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....BASE...86-91. TOP...67-73.
MIN HUMIDITY........BASE...13-18 PERCENT. TOP...30-37 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 2-5 MPH BECOMING NORTH-NORTHWEST
                    AROUND 6-8 MPH IN THE AFTERNOON.
MIXING HEIGHT.......8900 FT AGL.
MIXING WINDS........WEST 10 MPH.
HAINES INDEX........3 VERY LOW.

$$
FORECASTER...ALLEGRETTO
REQUESTED BY...MATT BUTLER
TYPE OF REQUEST...WILDFIRE
.TAG 20110826.WESTR.01/MSO