FNUS75 KBYZ 232134
FWSBYZ

SPOT FORECAST FOR EMIGRANT...USDA FOREST SERVICE GALLATIN NATIONAL FOREST
NATIONAL WEATHER SERVICE BILLINGS MT
334 PM MDT TUE JUL 23 2013

FORECAST IS BASED ON REQUEST TIME OF 1511 MDT ON JULY 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...POOR HUMIDITY RECOVERY TONIGHT...

...MINIMUM HUMIDITY IN THE LOWER TEENS ON WEDNESDAY...

.DISCUSSION...
HUMIDITY RECOVERIES WILL BE POOR AGAIN TONIGHT. WEDNESDAY WILL BE
WARM WITH HUMIDITIES FALLING INTO THE LOWER TEENS. WINDS WILL BE
GENERALLY LIGHT AND DRIVEN BY TERRAIN INFLUENCES. EXPECT SOME
GUSTS IN THE AFTERNOON AT RIDGE TOP LEVEL AS THE SLOPES HEAT UP.
SOME MONSOON MOISTURE WILL APPROACH THE FIRE WEDNESDAY SO EXPECT
TO SEE A BIT MORE CUMULUS IN THE AFTERNOON. IT LOOKS
LIKE THE BEST CHANCE OF THUNDERSTORMS WILL STAY TO THE SOUTH OF
THE SITE. THUNDERSTORM CHANCES MOVE INTO THE SITE ON THURSDAY.
TWH

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....49-54.
MAX HUMIDITY........32-37 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE/DOWNVALLEY 2-6 MPH.
 RIDGETOP...........NORTH 5 TO 10 MPH IN THE EVENING BECOMING
                    SOUTHWEST OVERNIGHT.
MIXING HEIGHT.......FALLING TO 500 FT AGL.
MIXING WINDS........LIGHT WINDS.
HAINES INDEX........4.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....78-83.
MIN HUMIDITY........13-18 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE/DOWNVALLEY 4 TO 10 MPH. WINDS
                    BECOMING UPSLOPE/UPVALLEY BY MID MORNING.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS.
 RIDGETOP...........WEST 5 TO 15 MPH.
MIXING HEIGHT.......6900 FT AGL.
MIXING WINDS........SOUTHWEST 5 TO 10 MPH.
HAINES INDEX........5.

$$
FORECASTER...HUMPHREY
REQUESTED BY...CRISTI HEANEY
TYPE OF REQUEST...WILDFIRE
.TAG 20130723.EMIGR.02/BYZ