Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 112056
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
156 PM MST WED DEC 11 2013

.SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT. SATELLITE IMAGERY
DEPICTING UPPER RIDGING OFF THE WA/OR COAST THIS AFTERNOON WITH
NORTHWESTERLY FLOW OVER IDAHO SHIFTING EASTWARD. MODELS BRING A
DRYING TREND TO THE AREA...BUT THERE IS SOME CONCERN ABOUT FREEZING
FOG DEVELOPING OVER THE SNAKE PLAIN TONIGHT/TOMORROW MORNING. UPPER
RIDGING WILL BUILD INTO THE AREA AND LEAD TO MOSTLY CLEAR SKIES
OVERNIGHT...INCREASING THE LIKELIHOOD OF FOG. OUR NEXT WEATHER
SYSTEM WILL BE MOVING INTO THE AREA ON FRIDAY AND HAS SOME WEAK
FORCING WITH IT AND MODELS SHOW ABOUT 1 TO 3 INCHES OF SNOWFALL IN
THE HIGH COUNTRY AND VERY LITTLE IN THE SNAKE PLAIN. SNOW SHOULD
TAPER OFF AS THE TROUGH PASSES...BUT UPSLOPE FLOW MAY KEEP LIGHT
SNOW OVER THE EASTERN HIGHLANDS.  HINSBERGER

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY NIGHT. EXPECT
NORTHWEST FLOW TO CONTINUE THROUGH TUESDAY UNDER HIGH PRESSURE
RIDGING. THE GFS MODEL SHOWS MOISTURE MOVING INTO THE AREA IN
NORTHWEST FLOW LATE TUESDAY INTO WEDNESDAY. THE ECMWF MODEL BREAKS
DOWN THE RIDGE BRINGING A MOIST TROUGH THROUGH THE AREA WEDNESDAY
INTO THURSDAY. EXPECT GRADUAL WARMING TEMPERATURES THROUGH THE
PERIOD BECOMING NEAR NORMAL TO SLIGHTLY ABOVE NORMAL. WYATT
&&

.AVIATION...EXPECT VFR CONDITIONS THE REST OF THE AFTERNOON FOR ALL
TAF SITES UNDER HIGH PRESSURE RIDGING. THERE IS A CHANCE FOR MVFR/IFR
CIGS TO RETURN ACROSS THE SNAKE RIVER PLAIN AND EASTERN MAGIC VALLEY
THIS EVENING THROUGH EARLY TOMORROW MORNING PARTICULARLY FOR KPIH
AND KIDA. WYATT
&&


.PIH WATCHES/WARNINGS/ADVISORIES...NONE.
&&

$$
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