Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 020826
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
226 AM MDT THU OCT 2 2014

.DISCUSSION...REGION ENTERING A PERIOD OF QUIET WEATHER THANKS TO A
BUILDING UPPER RIDGE IN THE EAST PACIFIC AND STABLE NORTHWESTERLY
FLOW OVER THE NORTHWEST. COOL NIGHTTIME TEMPS EXPECTED TONIGHT AND
TOMORROW NIGHT WITH CLEAR SKIES AND LIGHT WINDS. A FROST ADVISORY
IS IN EFFECT FOR THIS MORNING AND MAY BE RE-ISSUED AGAIN FOR
FRIDAY MORNING. A COLD FRONT WILL SLIDE TO OUR NORTH AND EAST THIS
AFTERNOON AND TONIGHT. ALTHOUGH IT IS NOT EXPECTED TO BRING
PRECIPITATION TO SOUTHEAST IDAHO...IT MAY RESULT IN SOME INCREASED
WINDS THIS AFTERNOON. SUSTAINED WIND SPEEDS SHOULD REMAIN UNDER 25
KTS SO NO HEADLINES ARE EXPECTED. MODELS GENERALLY SHOWING A
WARMING TREND THROUGH THE WEEKEND UNDER UPPER RIDGING. THE RIDGE
SHOWS SIGNS OF FLATTENING SOMEWHAT SATURDAY NIGHT AND RE-
AMPLIFYING OVER THE EAST PACIFIC. GFS/ECMWF BOTH MAINTAIN WARM AND
DRY CONDITIONS THROUGH THE MIDDLE OF NEXT WEEK. HINSBERGER
&&

.AVIATION...COOL NORTHWEST FLOW REMAINS TODAY WITH UPPER RIDGE
AMPLIFYING ALONG PACIFIC COAST. FAST MOVING SHORTWAVE DROPS THROUGH
MONTANA TODAY BUT EFFECTS SHOULD REMAIN NORTH OF DIVIDE. STRONG SFC
GRADIENT STILL IN PLACE TODAY ALONG WITH FAST NORTHWEST FLOW ALOFT.
THEREFORE WINDS REMAIN ELEVATED AROUND 20KTS ESPECIALLY DURING MAX
HEATING. DMH
&&

.FIRE WEATHER...FAST NORTHWEST FLOW IN PLACE OVER EAST IDAHO. A FEW
CLOUDS POSSIBLE AS SHORTWAVE SLIDES THROUGH MONTANA NORTH OF DIVIDE
OTHERWISE DRY AND SUNNY CONDITIONS. GUSTY WINDS AGAIN TODAY WITH
TIGHT SFC GRADIENT AND 30KT 700MB FLOW ASSOCIATED WITH PASSAGE OF
SHORTWAVE. OTHERWISE UPPER RIDGE CONTINUES TO AMPLIFY ALONG PACIFIC
COAST AND INTO INTERMOUNTAIN WEST. TREND WILL BE FOR CONTINUED SLOW
WARMING AND DRY CONDITIONS INTO EARLY NEXT WEEK. DMH
&&

.PIH WATCHES/WARNINGS/ADVISORIES...
FROST ADVISORY UNTIL 9 AM MDT THIS MORNING IDZ017-020-021.
&&

$$



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