FNUS75 KBYZ 261720
FWSBYZ

SPOT FORECAST FOR EMIGRANT...USDA FOREST SERVICE GALLATIN NATIONAL FOREST
NATIONAL WEATHER SERVICE BILLINGS MT
1120 AM MDT FRI JUL 26 2013

FORECAST IS BASED ON REQUEST TIME OF 1100 MDT ON JULY 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

...CRITICAL FIRE WEATHER DAY POSSIBLE SATURDAY WITH DRY
THUNDERSTORMS AND GUSTY WINDS...

AN UNSTABLE NORTHWEST FLOW WILL REMAIN OVER THE FIRE SITE TODAY
THROUGH SATURDAY. THIS WILL RESULT IN ISOLATED THUNDERSTORMS THIS
AFTERNOON AND TONIGHT. THESE STORMS WILL HAVE THE POTENTIAL TO
PRODUCE GUSTY WINDS. ALONG WITH SOME RAIN. THUNDERSTORMS ON
SATURDAY WILL BE DRY AND COULD PRODUCE STRONG GUSTY WINDS.
TEMPERATURES BOTH TODAY AND SATURDAY WILL BE AROUND 80 DEGREES
WITH RH'S EXPECTED IN THE UPPER TEENS. HAINES INDEX TOMORROW WILL
BE 6. RH RECOVERIES TONIGHT WILL BE POOR. WINDS WILL CONTINUE TO
BE DOMINATED BY UPSLOPE/UPVALLEY DURING THE DAY AND
DOWNSLOPE/DOWNVALLEY OVERNIGHT. WINDS WILL BE IN THE 5 TO 10 MPH
RANGE.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY. ISOLATED THUNDERSTORMS IN THE
                    AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE GUSTY
                    WINDS IN THE AFTERNOON.
CWR.................8 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....77-82.
MIN HUMIDITY........14-19 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT WINDS IN THE MORNING BECOMING NORTHEAST 5
                    TO 10 MPH IN THE AFTERNOON. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........WEST 5 TO 15 MPH.
MIXING HEIGHT.......11100 FT AGL.
MIXING WINDS........WEST 5 TO 10 MPH.
HAINES INDEX........4.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED THUNDERSTORMS IN THE
                    EVENING. SOME THUNDERSTORMS MAY PRODUCE GUSTY
                    WINDS IN THE EVENING.
CWR.................9 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....48-53.
MAX HUMIDITY........72-77 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
                    BECOMING LIGHT OVERNIGHT. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
 RIDGETOP...........NORTHWEST 5 TO 15 MPH.
MIXING HEIGHT.......200 FT AGL.
MIXING WINDS........LIGHT WINDS.
HAINES INDEX........4.

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE MORNING...THEN SCATTERED
                    THUNDERSTORMS IN THE AFTERNOON. SOME
                    THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE
                    AFTERNOON.
CWR.................13 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....79-84.
MIN HUMIDITY........19-24 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
                    SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS.
 RIDGETOP...........WEST 5 TO 15 MPH.
MIXING HEIGHT.......11200 FT AGL.
MIXING WINDS........SOUTHWEST 5 TO 10 MPH.
HAINES INDEX........6.

$$
FORECASTER...RICHMOND
REQUESTED BY...CRISTI HEANEY
TYPE OF REQUEST...WILDFIRE
.TAG 20130726.EMIGR.01/BYZ