FNUS75 KPIH 301001
FWSPIH

SPOT FORECAST FOR SALT FIRE...USFS
NATIONAL WEATHER SERVICE POCATELLO ID
401 AM MDT FRI SEP 30 2011

FORECAST IS BASED ON REQUEST TIME OF 1952 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...UPPER RIDGE IN PLACE OVER GREAT BASIN TODAY WITH A
WEAK DISTURBANCE ROTATING NORTHEAST AROUND THE HIGH INTO
SOUTHEAST OREGON EARLY THIS MORNING. THIS FEATURE IS EXPECTED TO
LIFT THROUGH THE CENTRAL MOUNTAINS AROUND NOON WITH ATTENDING UPPER
CLOUDS PASSING OVER THE FIRE. LOW LEVEL MOISTURE APPEARS TO BE TOO
LIMITED FOR THUNDERSTORMS EVEN THOUGH INSTABILITY PARAMETERS SUPPORT
CONVECTION. STRONG SURFACE BASED INVERSION EVIDENT IN NEARBY
OBSERVATIONS AND SUPPORTED BY MODELS EXTENDING UPWARD THROUGH
6000-7000 FEET MSL THIS MORNING SHOULD MIX OUT READILY AFTER 1100 MDT
WITH HELP FROM PASSING WAVE. SHALLOW STABLE LAYER ALOFT NEAR 17000
MSL. UPPER RIDGE SHIFTS EAST OF DIVIDE SATURDAY WITH INCREASING
SOUTHWEST FLOW ALOFT ACROSS REGION DUE TO APPROACHING PAC TROUGH.

.TODAY...

SKY/WEATHER.........INCREASING HIGH CLOUDS.
MAX TEMPERATURE.....75-79 AT 7000 MSL
                    70-74 AT 8000 MSL
                    64-68 AT 9000 MSL
MIN HUMIDITY........12-18 PERCENT BELOW 8000 MSL
                    22-26 PERCENT AT 9000 MSL
WIND (20 FT)........UPSLOPE WINDS 3 TO 8 MPH THROUGH 1100 MDT...THEN
                    SOUTHWEST 6 TO 13 MPH WITH OCCASIONAL GUSTS UP TO
                    23 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......10000-10200 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 21 MPH.
HAINES INDEX........5.
LAL.................1.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........38-48 PERCENT.
WIND (20 FT)........BECOMING DOWNSLOPE 3 TO 5 MPH AFTER 2000 MDT BELOW
                    7000  MSL. ABOVE 7000 MSL...SOUTHWEST WINDS 5 TO 15
                    MPH AND GRADUALLY INCREASING THROUGH THE NIGHT.
CWR.................0 PERCENT.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 15 MPH.
HAINES INDEX........4.
LAL.................1.

.SATURDAY...

SKY/WEATHER.........INCREASING CLOUDS WITH A SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....71-78 AT 7000 MSL
                    66-70 AT 8000 MSL
                    60-64 AT 9000 MSL
MIN HUMIDITY........13-19 PERCENT BELOW 8000 MSL
                    23-27 PERCENT AT 9000 MSL
WIND (20 FT)........UPSLOPE WINDS 3 TO 8 MPH IN THE MORNING...THEN
                    SOUTHWEST 12 TO 17 MPH WITH OCCASIONAL GUSTS UP
                    TO 30 MPH IN THE AFTERNOON.
CWR.................5 PERCENT.
MIXING HEIGHT.......8500-9500 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 29 MPH.
HAINES INDEX........4.
LAL.................1.

$$
FORECASTER...HUSTON
REQUESTED BY...STEVE COBB
TYPE OF REQUEST...WILDFIRE
.TAG 20110929.SALTF.02/PIH