FNUS75 KTFX 270036
FWSTFX

SPOT FORECAST FOR DAVIS...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
636 PM MDT THU AUG 26 2010

FORECAST IS BASED ON REQUEST TIME OF 1756 MDT ON AUGUST 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT THROUGH MIDNIGHT TONIGHT FOR GUSTY
SOUTHWEST WINDS AND VERY LOW HUMIDITY...

...ISOLATED DRY THUNDERSTORMS POSSIBLE THROUGH MIDNIGHT...

.DISCUSSION...
CRITICAL FIRE WEATHER CONDITIONS INCLUDING GUSTY SOUTHWEST WINDS
AND LOW HUMIDITY WILL CONTINUE THROUGH THIS EVENING BEFORE A COLD
FRONT ARRIVES NEAR THE FIRE AREA AROUND MIDNIGHT. STRONGEST WIND
GUSTS TO AROUND 45 MPH WILL BE POSSIBLE IN EXPOSED LOCATIONS
AROUND THE TIME OF FRONTAL PASSAGE. IN ADDITION...ALTHOUGH
MOISTURE IS VERY LIMITED...CUMULUS CLOUD BUILDUPS WITH A FEW
ISOLATED THUNDERSTORMS ARE DEVELOPING AHEAD OF THE COLD FRONT.
DOWNDRAFTS PRODUCED BY THESE CLOUD BUILDUPS COULD PRODUCE ERRATIC
WINDS AT TIMES NEAR THE FIRE AND AN ISOLATED THUNDERSTORM LATER
THIS EVENING CAN NOT BE RULED OUT. WINDS WILL SHIFT TO THE WEST
AND REMAIN WINDY BEHIND THE COLD FRONT...HOWEVER TEMPERATURES WILL
FALL AND HUMIDITY WILL INCREASE ABOVE CRITICAL LEVELS AFTER
MIDNIGHT.

GUSTY WEST WINDS WILL CONTINUE ON FRIDAY HOWEVER TEMPERATURES WILL
BE SIGNIFICANTLY COOLER WITH HIGHER HUMIDITY. WINDS WILL DECREASE
QUICKLY FRIDAY EVENING WITH LIGHTER WINDS EXPECTED THROUGH THE
REMAINDER OF THE WEEKEND. INCREASING CLOUDS ARE EXPECTED SATURDAY
WITH A CHANCE FOR SHOWERS IN THE LATE AFTERNOON AND EVENING. BY
SUNDAY...A MUCH COOLER AND WETTER WEATHER PATTERN WILL DEVELOP WITH
A GOOD CHANCE FOR WIDESPREAD WETTING RAINS LATE SUNDAY INTO
MONDAY.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED DRY THUNDERSTORMS IN
                    THE EVENING.
CWR.................LESS THAN 10 PERCENT.
MIN TEMPERATURE.....43-48.
MAX HUMIDITY........50-60 PERCENT.
WIND (20 FT)........WINDY. SOUTHWEST WINDS 15 TO 25 MPH SHIFTING
                    TO WEST AROUND MIDNIGHT. GUSTS UP TO 35 MPH
RIDGE TOP WIND......WINDY. WEST WINDS 20 TO 30 MPH SHIFTING TO
                    WEST AROUND MIDNIGHT. GUSTS UP TO 45 MPH
MIXING HEIGHT.......LOWERING TO AROUND 1000 FT AGL AFTER MIDNIGHT.
MIXING WINDS........SOUTHWEST 20 TO 30 MPH.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................ZERO PERCENT.
MAX TEMPERATURE.....53-58.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........WINDY. WEST WINDS 15 TO 25 MPH. GUSTS UP TO 35
                    MPH IN THE MORNING.
RIDGE TOP WIND......WINDY. WEST WINDS 20 TO 30 MPH. GUSTS UP TO 40
                    MPH.
MIXING HEIGHT.......4000 FT AGL.
MIXING WINDS........WEST AROUND 20 MPH.

.FRIDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY WITH DECREASING WINDS.
MIN TEMPERATURE.....32-38
MAX HUMIDITY........70-80 PERCENT LOWER ELEVATIONS...60-70 PERCENT
                    RIDGETOPS.
WINDS...............BECOMING DOWNSLOPE/DOWNVALLEY 3-6 MPH MID SLOPES
                    AND VALLEYS...WEST 10-15 MPH RIDGETOPS.

.SATURDAY...
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING...BECOMING MOSTLY
                    CLOUDY WITH A SLIGHT CHANCE OF SHOWERS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....55-60
MIN HUMIDITY........35-40 PERCENT.
WINDS...............SOUTHWEST WINDS 5 TO 10 MPH LOWER ELEVATIONS
                    SOUTHWEST 10-15 MPH RIDGETOPS.

$$
FORECASTER...HOENISCH
REQUESTED BY...HIDC
TYPE OF REQUEST...WILDFIRE
.TAG 20100826.DAVIS.02/TFX