FNUS75 KPIH 282324
FWSPIH

SPOT FORECAST FOR MIDDLE BUTTE...EIIFC
NATIONAL WEATHER SERVICE POCATELLO ID
524 PM MDT SAT AUG 28 2010

FORECAST IS BASED ON REQUEST TIME OF 1554 MDT ON AUGUST 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT...

.DISCUSSION...TROUGH/COLD FRONT HAS MOVED THROUGH EARLIER TODAY
WITH DRY AIR WELL IN PLACE BEHIND IT. THE DEW POINT HAS BEEN
DROPPING THE LAST SEVERAL HOURS. LOOK FOR RELATIVE HUMIDITY TO
GET AS LOW AS 8 PERCENT EARLY THIS EVENING. WINDS CURRENTLY ARE
FROM THE WEST AROUND 20 MPH WITH GUSTS OF 30 MPH. LOOK FOR THESE
TO CONTINUE BUT TO SLOWLY DECREASE BY MIDNIGHT. MODELS ARE
SHOWING WEST SOUTHWEST TO SOUTHWEST WINDS BY MIDNIGHT. LOOK FOR
WINDS TO BE RELATIVELY LIGHT LATE EVENING INTO EARLY MORNING FROM
THE NORTHWEST. MODELS ARE STILL INDICATING SOME MOISTURE AND AN
ASSOCIATED WAVE TRYING TO WORK ITS WAY NORTH INTO THE AREA THIS
EVENING WHICH WILL DRIVE THE RELATIVE HUMIDITY BACK UP. THUS...
HAVE LEFT THE POSSIBILITY OF THUNDERSTORMS AND SHOWERS IN THE
FORECAST. TOMORROW WINDS WILL BE ELEVATED AGAIN AHEAD OF ANOTHER
TROUGH...WHICH WILL MOVE THROUGH THE AREA LATE SUNDAY NIGHT INTO
MONDAY MORNING. THERE WILL BE A CHANCE OF SHOWERS AND
THUNDERSTORMS LATE AFTERNOON INTO EVENING. HOWEVER THE BEST
CHANCE OF CONVECTION WILL BE LATE SUNDAY NIGHT INTO MONDAY
MORNING WHEN THE TROUGH PASSES THROUGH. LOOK FOR WINDS TO REMAIN
ELEVATED OVERNIGHT WITH GUST REMAINING FROM THE WEST TO SOUTHWEST
NEAR 20 TO 25 MPH SUNDAY NIGHT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
                    ISOLATED TO WIDELY SCATTERED SHOWERS AND
                    THUNDERSTORMS BEFORE MIDNIGHT...THEN SLIGHT
                    CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
TEMPERATURE.........MIN 44 TO 48.
RH..................MAX 58 PERCENT.
WIND (20 FT)........WEST WINDS 20 MPH WITH GUSTS OF 30 MPH
                    SHIFTING TO THE NORTHWEST 6 TO 10 MPH
                    AFTER MIDNIGHT. OUTFLOW WINDS OF UP TO 40
                    MPH ARE POSSIBLE IN AND AROUND THUNDERSTORMS.
CWR.................19 PERCENT.
MIXING HEIGHT.......1500 FT AGL.
MIXING WINDS........WEST AROUND 18 THEN NORTHWEST AROUND 14 MPH
                    AFTER MIDNIGHT.
HAINES INDEX........4.
LAL.................3...THEN 1 AFTER MIDNIGHT.

.SUNDAY...

SKY/WEATHER.........PARTLY CLOUDY BECOMING MOSTLY CLOUDY. SLIGHT
                    CHANCE OF RAIN SHOWERS EARLY IN THE MORNING...
                    THEN CHANCE OF RAIN SHOWERS AND ISOLATED
                    THUNDERSTORMS LATE IN THE AFTERNOON.
TEMPERATURE.........MAX 63 TO 67.
RH..................MIN 25 PERCENT.
WIND (20 FT)........SOUTHWEST TO WEST WINDS 15 TO 20 MPH. GUSTS UP TO 25
                    TO 30 MPH IN THE AFTERNOON.
CWR.................12 PERCENT.
MIXING HEIGHT.......6200 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 16 MPH.
HAINES INDEX........3.
LAL.................1...THEN 2 IN THE AFTERNOON.

.SUNDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS
                    EARLY EVENING BECOMING LIKELY SHOWERS LATE EVENING.
TEMPERATURE.........MIN 39 TO 43.
RH..................MAX 78 PERCENT.
WIND (20 FT)........WEST TO SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS OF
                    20 TO 25 MPH.
CWR.................19 PERCENT EARLY BECOMING 35 PERCENT LATE EVENING.
MIXING HEIGHT.......1500 FT AGL.
MIXING WINDS........WEST AROUND 20 MPH.
HAINES INDEX........3.
LAL.................1.

$$
FORECASTER...WYATT
REQUESTED BY...IC ZIMMERMAN
TYPE OF REQUEST...WILDFIRE
.TAG 20100828.MIDDL.01/PIH