901
FXUS65 KPIH 251934
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
134 PM MDT MON MAY 25 2026
KEY MESSAGES
- 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. FRIDAY AND SATURDAY MUCH COOLER WITH NEAR OR SLIGHTLY
BELOW NORMAL TEMPERATURES.
DISCUSSION
ISSUED AT 103 PM MDT MON MAY 25 2026
SOUTHERLY FLOW ALOFT AS UPPER LOW MOVES SOUTH ALONG CALIFORNIA
COAST THROUGH MIDWEEK WILL KEEP MILD TEMPERATURES AND MOISTURE
FILTERING INTO SOUTHEAST IDAHO. WILL HAVE ISOLATED TO SCATTERED
SHOWERS AND THUNDERSTORMS THROUGH FRIDAY MAINLY IN THE MOUNTAINS
BUT AT LEAST A SLIGHT CHANCE EVERYWHERE. HIGHS TUESDAY THROUGH
THURSDAY MAINLY 70S TO LOWER 80S SO REMAINING WELL ABOVE NORMAL.
THE UPPER LEVEL TROF FINALLY SLIDES EAST FRIDAY INTO SATURDAY
WITH MUCH COOLER CONDITIONS WITH HIGHS DROPPING TO THE LOWER 60S
TO LOWER 70S OR ABOUT A 10 DEGREE OR SO DROP. WILL LIKELY BE A
SHORT LIVED COOL DOWN WITH WARMING EXPECTED AGAIN BY NEXT SUNDAY
INTO MONDAY. EXPECT LESS THUNDERSTORM COVERAGE SATURDAY INTO
MONDAY BUT NOT COMPLETELY OUT OF THE PICTURE. EXPECT SOME BREEZY
SOUTHERLY WINDS DAILY THROUGH FRIDAY BUT NOT EXPECTING
SIGNIFICANT WINDS OTHER THAN FROM THUNDERSTORM OUTFLOW THROUGH
THE PERIOD.
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...GK
AVIATION...MESSICK
FIRE WEATHER...13
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