208
FXUS65 KPIH 251802
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
1202 PM MDT MON MAY 25 2026
KEY MESSAGES
- PEAK WARMTH TODAY: MEMORIAL DAY WILL BRING THE WARMEST
TEMPERATURES OF THE STRETCH, WITH LOWER ELEVATIONS CLIMBING
INTO THE MID-TO-UPPER 80S ALONGSIDE ANOTHER ROUND OF GUSTY
THUNDERSTORM WINDS.
- EXTENDED MID-WEEK UNSETTLED PATTERN: THE WARM HOLIDAY REGIME
BREAKS DOWN TUESDAY AS A CLOSED LOW PARKS ITSELF NEAR LAKE
TAHOE, KICKING OFF A PROLONGED STRETCH OF DAILY STORM CHANCES,
BREEZY CONDITIONS, AND COOLER TEMPERATURES THROUGH THE END OF
MAY.
DISCUSSION
ISSUED AT 153 AM MDT MON MAY 25 2026
A LOW PRESSURE SYSTEM IS EXPECTED TO MOVE ONTO THE PACIFIC
NORTHWEST COAST TONIGHT. THE LOW WILL MOVE THROUGH OREGON AND
STALL OVER THE WESTERN GREAT BASIN BY WEDNESDAY. THEN THE LOW
WILL WEAKEN AND LIFT OUT TOWARDS THE END OF THE WEEK.
SIGNIFICANT WIDESPREAD PRECIPITATION WITH THIS SYSTEM IS
UNLIKELY BUT ISOLATED TO SCATTERED THUNDERSTORMS WILL BE
POSSIBLE JUST ABOUT EACH DAY, ESPECIALLY DURING THE AFTERNOON.
TODAY WILL BE THE WARMEST DAY WITH HIGHS IN THE 70S ACROSS THE
MOUNTAINS AND HIGHLANDS WITH MID TO UPPER 80S FOR THE SNAKE
PLAIN AND MAGIC VALLEY. HIGHS WILL COOL SOME WITH UPPER 70S TO
LOWER 80S LIKELY FOR THE MAGIC VALLEY AND SNAKE PLAIN FOR
MIDWEEK. AS THE LOW LIFTS THROUGH OUR AREA LATE WEEK, HIGHS WILL
COOL A LITTLE MORE WITH TEMPS GENERALLY SITTING AROUND 70 FOR
THE MAGIC VALLEY AND SNAKE PLAIN. FROST/FREEZE STILL LOOKS
UNLIKELY THIS WEEK WITH TEMPS IN MOST LOWER ELEVATIONS HOLDING
IN THE 40S FOR MORNING LOWS.
AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
ISSUED AT 1154 AM MDT MON MAY 25 2026
MAINTAINED THE PROB30 GROUPS (WITH ADJUSTED TIMES) FOR THE 5
AIRDROMES. HRRR DATA INDICATES GOOD COVERAGE OF TSRA AT THE
AIRPORTS, WHILE NBM INDICATES 10 TO 25 PERCENT AT BEST, WITH
KDIJ AND KSUN THE MOST LIKELY TARGETS. THE TS THREAT ONLY
CONTINUES UNTIL LATE AFTERNOON/EARLY EVENING, THEN LOWERS TO
ISOLATED TO SCATTERED SHRA.
SEE ZERO IMPACT TO VSBY AND WHAT FEW CIGS THAT DEVELOP WILL BE
DUE TO A FEATURE MOVING IN TONIGHT AND SPREADING MID- AND HIGH
LEVEL MOISTURE INTO THE NORTH IN THE LATE EVENING, THEN IN THE
SOUTH DURING THE MORNING HOURS. LOWEST CIG THOUGH IS A NON-
IMPACT 8000FT AGL.
WIND OUTSIDE OF TS WILL TURN SOUTH AND STAY ELEVATED OVERNIGHT
WITH THIS WEAK TROUGH EXPECTED TUE. DOWNSLOPING AT KPIH MAY KEEP
THE WIND SURPRISINGLY STRONG FOR OVERNIGHT AND MORNING.
UNCERTAIN IF AN INVERSION WILL CAP THAT PHENOMENON. KSUN WIND IS
LIKELY NOT TO GO NORTHERLY OVERNIGHT DUE TO THIS SAME FEATURE.
FIRE WEATHER
ISSUED AT 153 AM MDT MON MAY 25 2026
ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED MUCH OF THE
WEEK AS A LOW PRESSURE SYSTEM MOVES INTO THE REGION. RAINFALL
AMOUNTS ARE GENERALLY EXPECTED TO BE LIGHT WITH THE BEST CHANCES
FOR WETTING RAINS ON TUESDAY ACROSS THE CENTRAL MOUNTAINS AND
EASTERN HIGHLANDS WITH ANOTHER SHOT FOR WETTING RAINS LATER IN
THE WEEK.
PIH WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION...13
AVIATION...MESSICK
FIRE WEATHER...13
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