FNUS75 KPIH 231530
FWSPIH

SPOT FORECAST FOR BREAKS 1...FS-SCF
NATIONAL WEATHER SERVICE POCATELLO ID
930 AM MDT MON APR 23 2012

FORECAST IS BASED ON IGNITION TIME OF 1600 MDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...SOME UNSTABLE AIR WITH MOISTURE HAS MOVED INTO CENTRAL
IDAHO OVERNIGHT.  COMBINED WITH STRONG HEATING, BY AFTERNOON THIS
SHOULD GENERATE SOME SHOWER ACTIVITY, ALONG WITH A CHANCE FOR
THUNDERSTORMS.  THE THUNDERSTORM THREAT WILL DEVELOP AROUND NOON AND
CONTINUE INTO THE EVENING.  TUESDAY AFTERNOON WILL SEE DIMINISHED
CHANCES OF BOTH SHOWERS AND THUNDERSTORMS.  THE NEXT SIGNIFICANT
PRECIPITATION SHOULD COME THURSDAY NIGHT AND FRIDAY WHEN A COLD
FRONT MOVES THROUGH CENTRAL IDAHO.  THIS SHOULD BRING RAIN...SOME
HIGH ELEVATION SNOW...AND MODERATE TO STRONG WIND.  TEMPERATURES
WILL COOL BY 15 TO 25 DEGREES COMPARED TO TODAY.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY CLOUDY, BY 0900 BECOMING PARTLY CLOUDY.
                     AFTER 1100, SHOWERS LIKELY WITH A CHANCE OF
                     THUNDERSTORMS.  GUSTS TO 40 MPH NEAR
                     THUNDERSTORMS.
TEMPERATURE.........7000 FT ELEVATION...MAX 66.
RH..................7000 FT ELEVATION...MIN 34 PERCENT.
WIND (20 FT)........MID-SLOPE...NORTHWEST 1 TO 2 MPH, BY 1000
                     BECOMING SOUTHEAST 2 TO 8 MPH GUSTS TO 14 MPH.
                    RIDGE...SOUTHEAST 1 TO 6 MPH GUSTS TO 10 MPH,
                     BY 1400 BECOMING SOUTHWEST 2 TO 10 MPH GUSTS
                     TO 18 MPH. BY 1800, RIDGE WIND BECOMING SOUTH
                     1 TO 6 MPH GUSTS TO 10 MPH.
CWR.................20 PERCENT.
MIXING HEIGHT.......6000 TO 10000 FT AGL.
MIXING WINDS........SOUTHWEST 14 MPH.
HAINES INDEX........MAX 4.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY, BY 0600 BECOMING MOSTLY CLOUDY.
                     UNTIL 0300, SHOWERS LIKELY WITH A CHANCE OF
                     THUNDERSTORMS.  GUSTS TO 35 MPH NEAR
                     THUNDERSTORMS.
TEMPERATURE.........7000 FT ELEVATION...MIN 54.
RH..................7000 FT ELEVATION...MAX 45 PERCENT.
WIND (20 FT)........MID-SLOPE...SOUTHEAST 2 TO 8 MPH GUSTS TO 14
                     MPH, BY 1900 BECOMING NORTHWEST 1 TO 2 MPH.
                    RIDGE...SOUTHEAST 1 TO 6 MPH GUSTS TO 10 MPH,
                     BY MIDNIGHT BECOMING SOUTH 2 TO 10 MPH
                     GUSTS TO 18 MPH.  BY 0400, WIND BECOMING
                     NORTHWEST 2 TO 10 MPH GUSTS TO 18 MPH.
CWR.................32 PERCENT.
MIXING HEIGHT.......INVERSION AT 7300 FT ELEVATION.
MIXING WINDS........BELOW INVERSION...NORTHWEST 3 MPH.
                    ABOVE INVERSION...NORTHWEST 18 MPH.
HAINES INDEX........4.

.TUESDAY...

SKY/WEATHER.........MOSTLY CLOUDY, BY 1500 BECOMING PARTLY
                     CLOUDY. A CHANCE OF RAIN SHOWERS AND A
                     SLIGHT CHANCE OF THUNDERSTORMS.
TEMPERATURE.........7000 FT ELEVATION...MAX 60.
RH..................7000 FT ELEVATION...MIN 34 PERCENT.
WIND (20 FT)........MID-SLOPE...NORTHWEST 1 TO 5 MPH, BY 0900
                     BECOMING VARIABLE UP TO 3 MPH.  BY 1500
                     MID-SLOPE WIND BECOMING SOUTHEAST 2 TO
                     6 MPH GUSTS TO 10 MPH.
                    RIDGE...NORTHWEST 2 TO 10 MPH GUSTS
                     TO 18 MPH, BY 1400 BECOMING SOUTHWEST 2 TO
                     7 MPH GUSTS TO 12 MPH.  BY 1800, RIDGE
                     WIND BECOMING WEST 6 TO 12 MPH GUSTS TO
                     22 MPH.
CWR.................20 PERCENT.
MIXING HEIGHT.......1000 TO 4000 FT AGL.
MIXING WINDS........SOUTHWEST 10 MPH.
HAINES INDEX........3 VERY LOW.

$$
FORECASTER...MESSICK
REQUESTED BY...TOM GONNOUD
TYPE OF REQUEST...PRESCRIBED
.TAG 20120423.BREAK.01/PIH