356
FXUS65 KPIH 151141
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
541 AM MDT FRI MAY 15 2026
KEY MESSAGES
- DRASTIC TEMPERATURE SWINGS: SEASONABLE TEMPERATURES AGAIN
TODAY BEFORE ANOTHER SHARP DROP SUNDAY WHEN TEMPERATURES WILL
STRUGGLE TO REACH THE MID-40S TO LOWER 50S.
- BREEZY CONDITIONS AND LAKE WIND IMPACTS: LAKE WIND ADVISORY
FOR THE AMERICAN FALLS RESERVOIR DUE TO SUSTAINED WEST WINDS
UP TO 25 MPH AND GUSTS TO 35 MPH.
- FROST AND FREEZE RISK: WINTER-LIKE CONDITIONS RETURN LATE
THIS WEEKEND, WITH FROST OR FREEZE PRODUCTS LIKELY NEEDED FOR
GROWING ZONES SUNDAY THROUGH TUESDAY MORNING.
DISCUSSION
ISSUED AT 141 AM MDT FRI MAY 15 2026
DAYTIME TEMPERATURES TODAY WILL RUN WITHIN A FEW DEGREES OF
YESTERDAY'S TEMPERATURES AND VERY CLOSE TO SEASONABLE NORMS, WITH
WIDESPREAD UPPER-60S ACROSS OUR LOW ELEVATION AREAS AND 40S AND 50S
IN THE HIGHER TERRAIN. WESTERLY WINDS ARE EXPECTED TO RUN SLIGHTLY
STRONGER TODAY WITH THE BREEZIEST CONDITIONS BEING ACROSS THE ARCO
DESERT AND UPPER SNAKE RIVER PLAIN, WHERE A WIND ADVISORY IS IN
EFFECT FROM 10 AM THIS MORNING THROUGH 9 PM TONIGHT FOR SUSTAINED
WINDS AS HIGH AS 35 MPH AND GUSTS UP TO AROUND 50 MPH. A LAKE WIND
ADVISORY IS ALSO IN EFFECT FOR AMERICAN FALLS RESERVOIR DURING THE
SAME TIMEFRAME FOR WESTERLY WINDS UP TO 25 MPH AND GUSTS TO 35 MPH,
WHICH COULD MAKE FOR CHOPPY CONDITIONS, ESPECIALLY FOR SMALL CRAFT.
OTHERWISE, CONDITIONS WILL REMAIN DRY FOR THE NEXT FEW DAYS AS WE
GRADUALLY TRANSITION TO BELOW NORMAL TEMPERATURES WITH FREEZING
OVERNIGHT LOWS. A PACNW TROUGH WILL ARRIVE SATURDAY INTO SUNDAY,
BRINGING WITH IT MUCH COLDER TEMPERATURES AND CHANCES FOR SNOW
SHOWERS FOR OUR NORTHERN AND EASTERN MOUNTAINS AND HIGHLANDS.
FROST/FREEZE CONDITIONS WILL BECOME INCREASINGLY WIDESPREAD HEADING
INTO THE WEEKEND AND EARLY NEXT WEEK. WHILE LOCATIONS HERE AND THERE
ACROSS THE SNAKE RIVER PLAIN MAY BEGIN TO SEE TEMPERATURES DIP INTO
THE MID-30S AS EARLY AS THIS MORNING OR TOMORROW MORNING, IT'S NOT
UNTIL SUNDAY MORNING THAT OUR GROWING ZONES WILL OBSERVE WIDESPREAD
FREEZING OVERNIGHT LOWS WITH HARD FREEZE LIKELY ACROSS THE SNAKE
RIVER PLAIN MONDAY AND TUESDAY MORNINGS. BY WEDNESDAY NIGHT/THURSDAY
MORNING, TEMPERATURES BEGIN TO REMAIN ABOVE FREEZING AS WE WARM BACK
INTO ABOVE-NORMAL TERRITORY DURING THE SECOND HALF OF NEXT WEEK.
AVIATION /12Z TAFS THROUGH 12Z SATURDAY/
ISSUED AT 541 AM MDT FRI MAY 15 2026
VFR AND DRY CONDITIONS THROUGHOUT THE PERIOD. WESTERLY WINDS WILL
REMAIN BREEZY BOTH TODAY AND TOMORROW, WITH GUSTS UP TO 35 KTS AT
KPIH AND KIDA AND 20 TO 25 KTS ELSEWHERE. CLOUD COVER WILL INCREASE
LATE THIS EVENING AS A PACIFIC TROUGH APPROACHES.
PIH WATCHES/WARNINGS/ADVISORIES
WIND ADVISORY FROM 10 AM THIS MORNING TO 9 PM MDT THIS EVENING
FOR IDZ052-053.
DISCUSSION...CROPP
AVIATION...CROPP
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