FNUS75 KTFX 241553
FWSTFX

SPOT FORECAST FOR JIMTOWN NATURAL UNIT  3...HELENA DISPATCH CENTER
NATIONAL WEATHER SERVICE GREAT FALLS MT
953 AM MDT TUE APR 24 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL
WEATHER SERVICE.

.DISCUSSION...
WARM TEMPERATURES...LOW MINIMUM HUMIDITIES...AND TERRAIN DRIVEN
WINDS WILL AGAIN DOMINATE THE SPOT LOCATION FOR THE NEXT FEW DAYS.
CLOUD COVER WILL GENERALLY INCREASE THROUGH THE DAY AS MOISTURE
ALOFT MOVES INTO THE AREA. AFTERNOON HEATING WILL AGAIN CREATE
UPSLOPE AND UP VALLEY WINDS AND ALLOW FOR AFTERNOON SHOWER AND
THUNDERSTORM DEVELOPMENT. GUSTY AND ERRATIC WINDS CAN BE EXPECTED
IN THE VICINITY OF THESE SHOWERS AND THUNDERSTORMS. OVERNIGHT
DOWN SLOPE WINDS AND A NOCTURNAL INVERSION ARE EXPECTED...WITH
THE INVERSION BREAK FORECASTED BY MID MORNING WEDNESDAY.
CONDITIONS SHOULD BE SIMILAR WEDNESDAY WITH TERRAIN DRIVEN WINDS
DOMINATING GENERAL WINDS AND ANOTHER CHANCE OF AFTERNOON SHOWERS
AND THUNDERSTORMS CREATING GUSTY AND ERRATIC VICINITY WINDS.


.TODAY...

SKY/WEATHER.........PARTLY SUNNY. SCATTERED RAIN SHOWERS WITH
                    ISOLATED THUNDERSTORMS MAINLY IN THE
                    AFTERNOON AND EARLY EVENING.
CWR.................25 PERCENT.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........UPSLOPE AND UP VALLEY WINDS EXPECTED TO
                    DEVELOP DURING DAY CREATING WIND SPEEDS IN
                    EXCESS OF 10 MPH IN THE AFTERNOON. BELOW THE
                    DAM SOME COOLER DOWN VALLEY WINDS COULD
                    DEVELOP AND CREATE ERRATIC WIND CONDITIONS.
RIDGE TOP WIND......SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......5000 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 15 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
                    THUNDERSTORMS MAINLY BEFORE MIDNIGHT.
CWR.................15 PERCENT.
MIN TEMPERATURE.....46-51.
MAX HUMIDITY........68-73 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH SHIFTING TO THE
                    SOUTHWEST AFTER MIDNIGHT.
RIDGE TOP WIND......WEST AROUND 20 MPH.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........WEST AROUND 20 MPH.

.WEDNESDAY...

SKY/WEATHER.........PARTLY SUNNY. SCATTERED RAIN SHOWERS WITH
                    ISOLATED THUNDERSTORMS MAINLY IN THE
                    AFTERNOON AND EARLY EVENING.
CWR.................15 PERCENT.
MAX TEMPERATURE.....71-76.
MIN HUMIDITY........21-26 PERCENT.
WIND (20 FT)........UPSLOPE AND UP VALLEY WINDS EXPECTED TO
                    DEVELOP DURING DAY CREATING WIND SPEEDS IN
                    EXCESS OF 10 MPH IN THE AFTERNOON. BELOW THE
                    DAM SOME COOLER DOWN VALLEY WINDS COULD
                    DEVELOP AND CREATE ERRATIC WIND CONDITIONS.
RIDGE TOP WIND......WEST AROUND 10 MPH.
MIXING HEIGHT.......9000 FT AGL.
MIXING WINDS........WEST AROUND 10 MPH.

$$
FORECASTER...SUK
REQUESTED BY...DUNLAP
TYPE OF REQUEST...PRESCRIBED
.TAG 20120424.JIMTO.02/TFX