FNUS75 KPIH 290948
FWSPIH

SPOT FORECAST FOR GIBBONSVILLE 2...FS-SCF
NATIONAL WEATHER SERVICE POCATELLO ID
348 AM MDT MON APR 29 2013

FORECAST IS BASED ON IGNITION TIME OF 1825 MDT ON APRIL 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A VIGOROUS LOW PRESSURE TROUGH WAS DIGGING EAST
THROUGH WASHINGTON STATE EARLY THIS MORNING AS AN ASSOCIATED
SURFACE FRONT CONTINUED TO DEVELOP AND STRENGTHEN ALONG THE EAST
SLOPES OF THE CASCADES. MODEL FORECASTS HAVE THE FRONT PUSHING
THROUGH THE BURN AREA AROUND NOON TODAY WHILE THE UPPER TROUGH AXIS
PASSES OVER THE REGION TUESDAY. VERY STRONG WINDS WITH SCATTERED TO
NUMEROUS VALLEY RAIN AND MOUNTAIN SNOW SHOWERS WILL ACCOMPANY THE
FRONT TODAY. SNOW LEVELS WILL RANGE FROM 6000-6500 FEET MSL EARLY
THIS AFTERNOON BEFORE FALLING TO 4500 FEET MSL BEHIND THE FRONT
EARLY THIS EVENING. COLDER TEMPERATURES WILL CONTINUE TO FILTER
INTO THE REGION BEHIND THE FRONT TUESDAY WHILE THE PASSING UPPER
TROUGH PROMOTES SCATTERED SNOW SHOWER DEVELOPMENT IN THE AFTERNOON.

.TODAY...

SKY/WEATHER.........INCREASING CLOUDS. NUMEROUS SHOWERS DEVELOPING
                    BY MID-MORNING...THEN DECREASING IN THE
                    AFTERNOON.
MAX TEMPERATURE.....44-49.
MIN HUMIDITY........35-40 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 18 MPH EARLY THIS MORNING...
                    INCREASING TO 15 TO 30 MPH BY NOON WITH GUSTS
                    OF 45 TO 50 MPH POSSIBLE THROUGHOUT THE
                    AFTERNOON.
CWR.................25-35 PERCENT.
MIXING HEIGHT.......4000 TO 6000 FT AGL.
MIXING WINDS........WEST AROUND 48 MPH.
HAINES INDEX........2.

.TONIGHT...

SKY/WEATHER.........DECREASING CLOUDS. A SLIGHT CHANCE OF SNOW
                    SHOWERS.
MIN TEMPERATURE.....25-35.
MAX HUMIDITY........70-80 PERCENT.
WIND (20 FT)........WEST TO NORTHWEST WINDS DECREASING TO 7 TO
                    17 MPH AFTER 2100 MDT. GUSTS UP TO 30
                    MPH IN THE EVENING AND OVER RIDGE TOPS
                    THROUGH THE NIGHT.
CWR.................2 PERCENT.
MIXING HEIGHT.......800 FT AGL.
MIXING WINDS........WEST AROUND 10 MPH.
HAINES INDEX........2.

.TUESDAY...

SKY/WEATHER.........INCREASING CLOUDS. A SLIGHT CHANCE OF SNOW
                    SHOWERS.
MAX TEMPERATURE.....39-44.
MIN HUMIDITY........28-38 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 7 TO 17 MPH. GUSTS UP TO 25 MPH
                    IN THE AFTERNOON...ESPECIALLY OVER EXPOSED
                    TERRAIN.
CWR.................8 PERCENT.
MIXING HEIGHT.......4800 TO 6800 FT AGL.
MIXING WINDS........NORTHWEST AROUND 20 MPH.
HAINES INDEX........3.

$$
FORECASTER...HUSTON
REQUESTED BY...MIKE SMITH
TYPE OF REQUEST...PRESCRIBED
.TAG 20130428.GIBBO.01/PIH