322
FXUS65 KPIH 191018
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
418 AM MDT TUE MAY 19 2026
KEY MESSAGES
- WIDESPREAD FROST/FREEZE CONDITIONS PERSIST THROUGH WEDNESDAY
- TEMPERATURES CONTINUE TO WARM TOWARD ABOVE AVERAGE THROUGHOUT
THE WEEK
- BEST CHANCE OF SHOWERS AND THUNDERSTORMS WILL BE LATER
WEDNESDAY AND THURSDAY
DISCUSSION
ISSUED AT 1145 PM MDT MON MAY 18 2026
A FEW EARLY MORNING SHOWERS OR SPRINKLES REMAIN ACROSS THE MAGIC
VALLEY AND ALBION MOUNTAINS. THOSE SHOULD BE GONE BY SUNRISE.
ANOTHER ROUND OF ISOLATED SHOWERS/SPRINKLES DEVELOPS THIS
AFTERNOON AND EVENING ACROSS MOST OF THE CENTRAL MOUNTAINS AND
ALONG THE MONTANA BORDER. IT ALSO APPEARS A FEW SHOWERS ARE
POSSIBLE ACROSS HIGHER ELEVATIONS SOUTH OF THE SNAKE PLAIN. THE
CHANCE OF THUNDERSTORMS IS ALMOST NON-EXISTENT, BUT WE ALSO
CANNOT COMPLETELY RULE IT OUT ACROSS THE CENTRAL MOUNTAINS. THIS
SHOULD SHIFT EAST DIMINISH BEFORE MIDNIGHT. WE WILL SEE ANOTHER
BREAK UNTIL WEDNESDAY AFTERNOON, WHEN THE NEXT LOW BEGINS TO
DROP CLOSER TO EASTERN IDAHO AND WE SEE AN INITIAL ROUND OF
SHOWERS AND STORMS DEVELOP. THIS STORM SLOWLY SWINGS THROUGH ON
THURSDAY. PRECIPITATION AMOUNTS DON'T APPEAR IMPRESSIVE,
ALTHOUGH THERE ARE SOME TRENDS THAT WE COULD SEE SOME POCKETS OF
HEAVIER PRECIPITATION INVOLVING ANY THUNDERSTORMS OR BANDS
DEVELOPING. SNOW IS POSSIBLE ACROSS THE HIGHER PEAKS AND
RIDGELINES ON THURSDAY. TEMPERATURES REMAIN A BIT BELOW AVERAGE
TODAY BEFORE WARMING TO NEAR AVERAGE TOMORROW AND THURSDAY.
OVERNIGHT LOWS WILL REMAIN COLD ESPECIALLY WITH NOT MUCH CLOUD
COVER AND LIGHTER WINDS. OUR FREEZE WARNING AND FROST ADVISORY
REMAIN IN PLACE FOR THIS MORNING, AND WE WILL NEED ANOTHER SET
OF HEADLINES FOR WEDNESDAY MORNING. CLOUD COVER AND
PRECIPITATION WILL KEEP OVERNIGHT LOWS MORE MILD THURSDAY
MORNING. ANOTHER THING OF NOTE FOR THURSDAY, WE MAY NEED A LAKE
WIND ADVISORY AS NORTHERLY WINDS KICK IN AND MAY BE ENOUGH FOR
CHOPPY CONDITIONS ON AMERICAN FALLS RESERVOIR.
THE REST OF THE WEEK AND WEEKEND LOOK FAIRLY DRY, ALTHOUGH WE DO
SEE A COUPLE OF VERY WEAK LOWS SWEEPING ACROSS THE STATE WHICH
COULD KICK OFF A FEW SHOWERS OR STORMS HERE AND THERE.
TEMPERATURES JUMP QUITE A BIT, WITH 70S AND 80S RETURNING
SATURDAY-MONDAY. IT DOES LOOK A BIT MORE BREEZY DURING THAT
STRETCH AS WELL. WE SHOULD SEE ANOTHER LOW DROP SOUTH ACROSS
THE STATE BY TUESDAY, WITH COOLER TEMPERATURES AND AN UPTICK IN
SHOWERS AND STORMS.
AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/
ISSUED AT 416 AM MDT TUE MAY 19 2026
WE ARE EXPECTING VFR WEATHER, EVEN WITH SOME AFTERNOON CLOUDS
AND POTENTIAL FOR ISOLATED SHOWERS/SPRINKLES ACROSS HIGHER
ELEVATIONS. EVEN SOME POTENTIAL AROUND DIJ AND SUN, THE CHANCE
IS TOO LOW TO MENTION IN THE CURRENT ROUND OF TAFS.
PIH WATCHES/WARNINGS/ADVISORIES
FROST ADVISORY UNTIL 9 AM MDT THIS MORNING FOR IDZ051-055.
FREEZE WARNING UNTIL 9 AM MDT THIS MORNING FOR IDZ052>054.
DISCUSSION...KEYES
AVIATION...KEYES
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