Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 292013
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
213 PM MDT SAT AUG 29 2015

.DISCUSSION...KEPT A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
FORECAST THIS EVENING ALONG THE FRONTAL BAND EXTENDING FROM MONTANA
SOUTH TOWARDS BURLEY AREA. EXPECTING THIS BAND TO MOVE EAST THROUGH
THE SOUTH CENTRAL AND CARIBOU HIGHLANDS THIS EVENING. COULD SEE SOME
GUSTS TO AROUND 50 MPH FROM ISOLATED THUNDERSTORMS BEFORE THE
EVENING IS OVER. A FEW SHOWERS MAY LINGER THROUGH SUNDAY MORNING IN
THE UPPER SNAKE HIGHLANDS AND ARCO DESERT WITH THE LOW PRESSURE
TROUGH MOVING INLAND. SUNDAY IS LOOKING DRIER AND EXPECT ANY SHOWERS
TO BE MOVING EAST QUICKLY...BY AFTERNOON MAY BE JUST AN ISOLATED
STRAGGLER NEAR THE WYOMING BORDER. TEMPERATURES COOL A GOOD 10
DEGREES SUNDAY AND REMAIN COOL ON MONDAY. SOUTH-SOUTHWEST FLOW
BRINGS TEMPERATURES BACK INTO THE LOWER TO MIDDLE 80S TUESDAY AND
WEDNESDAY AHEAD OF THE NEXT TROUGH MOVING INTO IDAHO WITH A CHANCE
OF SHOWERS THURSDAY AND FRIDAY. BY THEN TEMPERATURES FALL BACK INTO
THE MIDDLE 70S TO NEAR 80. RS
&&

.AVIATION...DEEP SOUTHWEST FLOW USHERING IN SOME MID AND UPPER LEVEL
MOISTURE ACROSS THE AREA. A COLD FRONT WILL PUSH THROUGH THE AREA
LATER THIS AFTERNOON SO EXPECTING SOME WIND GUSTS AROUND 25 TO 30
KTS ACROSS THE SNAKE PLAIN. WINDS THE FRONT WILL ALSO TRIGGER SOME
SHOWERS AND ISOLATED THUNDERSTORMS ACROSS THE AREA. WHILE CONDITIONS
ARE EXPECTED TO REMAIN VFR...SOME BRIEF LOWERED VIS IS POSSIBLE WITH
HEAVIER SHOWERS. MODELS SUGGESTING SHOWERS SHOULD TAPER OFF BY THE
EARLY MORNING HOURS.  HINSBERGER

&&

.FIRE WEATHER...SOUTHWESTERLY FLOW IS STRONG AHEAD OF A DEEP EAST
PACIFIC TROUGH. THE FLOW IS BRINGING PLENTY OF MID AND UPPER LEVEL
MOISTURE. A COLD FRONT WILL MAKE ITS WAY INTO EAST IDAHO THIS
AFTERNOON RESULTING IN GUSTY WINDS AND A FEW SHOWERS/ISOLATED
THUNDERSTORMS. SURFACE HUMIDITY WILL DROP AS LOW AS 15 TO 20 PERCENT
TODAY. WITH THE COMBINATION OF WINDS AND LOW HUMIDITY...A RED FLAG
WARNING REMAINS IN EFFECT UNTIL 10PM TONIGHT. BREEZY AND DRY AGAIN
TOMORROW WITH A POST-FRONTAL AIRMASS IN PLACE AND PRECIP SHIFTING TO
THE EAST. A STRONG GRADIENT REMAINS OVER THE CENTRAL MOUNTAINS WITH
WIND GUSTS AROUND 25 KTS TOMORROW AFTERNOON...BUT MIN HUMIDITY
REMAINING NEAR 20 PERCENT IMPACTING DECISION NOT TO ISSUE FIRE
HEADLINES FOR TOMORROW. NEXT SYSTEM DROPS INTO SOUTHEAST IDAHO
THURSDAY AND FRIDAY.  HINSBERGER

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 10 PM MDT THIS EVENING FOR IDZ410-413-422-
427-475-476.

&&

$$


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