Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 290822
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
222 AM MDT FRI MAY 29 2015

.SHORT TERM...TODAY THROUGH SUNDAY.
WEAK UPPER LEVEL RIDGING MOVING OVER IDAHO TODAY AND EXPECT LESS
THUNDERSTORM ACTIVITY TODAY AND HAVE RESTRICTED MAINLY OVER THE
CENTRAL MOUNTAINS AND EASTERN HIGHLANDS. WILL HAVE A WARMING TREND
THROUGH THE WEEKEND WITH TEMPERATURES INTO THE 70S IN THE
MOUNTAINS AND 80S IN THE VALLEYS BY SUNDAY. GENERALLY EXPECT
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS SUNDAY AS WELL AS
INSTABILITY REMAINS IN PLACE UNDER THE MUCH WARMER CONDITIONS.
NORTHEAST WINDS THIS MORNING SHOULD STAY UNDER LAKE WIND ADVISORY
CRITERIA FOR AMERICAN FALLS RESERVOIR.
GK

.LONG TERM...MONDAY THROUGH FRIDAY.
UPPER TROF APPROACHES MONDAY AND IS EXPECTED TO BE OVER IDAHO
THROUGHOUT NEXT WEEK. TEMPERATURES ARE EXPECTED TO COOL OFF
SIGNIFICANTLY BY TUESDAY WTIH A CHANCE FOR SHOWERS AND
THUNDERSTORMS EVERY DAY NEXT WEEK.
GK

&&

.AVIATION...A MODEST UPPER RIDGE WAS BUILDING OVER THE PAC COAST
EARLY THIS MORNING RESULTING IN A FAIRLY DRY NW FLOW OVER SE IDAHO.
MODELS SUPPORT INSTABILITY SHOWERS DEVELOPING OVER THE MOUNTAINS
LATER THIS AFTERNOON WITH LITTLE OR NO IMPACT ON TERMINALS ALTHOUGH
ROUTES RUNNING NORTH TO SALMON OR ACROSS THE MONTANA/WYOMING BORDER
MAY SEE TEMPORARY TSTM VIS AND CIG IMPACTS FROM 21-03Z TODAY. HUSTON

&&

.FIRE WEATHER...A RIDGE OF HIGH PRESSURE WAS BUILDING OVER THE COAST
EARLY THIS MORNING RESULTING IN A DRIER NW FLOW ACROSS SE IDAHO.
AFTERNOON HEATING WILL ENCOURAGE THUNDERSTORM BUILDUPS ACROSS THE
CNTRL MOUNTAINS AND ALONG THE MONTANA AND WYOMING BORDER REGIONS
WHICH WILL CONTINUE INTO THE EARLY EVENING HOURS. THE RIDGE IS
EXPECTED TO SHIFT INLAND TONIGHT AND SATURDAY WITH PASSING
DISTURBANCES AND AFTERNOON HEATING ENCOURAGING THUNDERSTORM
DEVELOPMENT ACROSS THE CNTRL MOUNTAINS AND MONTANA/WYOMING BORDER
REGIONS ONCE AGAIN. AN INCREASING THREAT OF THUNDERSTORM ACTIVITY IS
EXPECTED NEXT WEEK AS A LOW PRESSURE SYSTEM LIFTS INTO THE NW COAST
MONDAY...GRADUALLY SPREADING EAST ACROSS THE NRN ROCKIES THROUGH MID-
WEEK. HUSTON

&&

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

$$


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