600
FXUS65 KPIH 200914
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
314 AM MDT MON APR 20 2026
KEY MESSAGES
- SUNNY AND WARM TODAY AND TUESDAY WITH LOW ELEVATION HIGH
TEMPERATURES IN THE MIDDLE TO UPPER 70S, ALPINE BASIN HIGHS
MIDDLE 60S TO MIDDLE 70S.
- NEXT STORM ARRIVES TUESDAY NIGHT, SPREADING MODERATE TO HEAVY RAIN
AND HIGH ELEVATION SNOW WEDNESDAY MORNING THROUGH FRIDAY
AFTERNOON, POSSIBLY CONTINUING INTO THE WEEKEND FOR SOME.
- WIDESPREAD BELOW FREEZING OVERNIGHT LOWS FOR MUCH OF THE SNAKE
RIVER PLAIN THURSDAY NIGHT THROUGH SATURDAY NIGHT, WITH
WARMING RETURNING SUNDAY NIGHT.
- VERY WINDY WEDNESDAY WITH THIS NEXT STORM. BREEZY AFTERNOONS
OTHERWISE.
DISCUSSION
ISSUED AT 1256 AM MDT MON APR 20 2026
TODAY THROUGH WED NIGHT...MASSIVE, DEEP LOW CURRENTLY SITS OFF
THE CA COAST, ALLOWING SOUTHWESTERLY FLOW AHEAD OF IT AND
BRINGING IN VERY WARM AIR FROM NV UNDER SUNNY SKIES OF AN UPPER
LEVEL RIDGE AXIS JUST PASSING TO THE EAST OF THE FORECAST AREA.
EXPECT SOLID WARMING TODAY, AS MUCH AS 5 DEGREES. TEMPERATURES LEVEL
OFF FOR TUE. BUT THIS INTENSE LOW MOVES ONSHORE TUE NIGHT AND SWINGS
A TROUGH AND ASSOCIATED SURFACE COLD FRONT THROUGH EASTERN IDAHO ON
WED. AFTERNOON HIGHS WILL COOL 20 TO 25 DEG F FROM TUE TO WED. WITH
THE CLOUD COVER, MORNING LOWS WILL BE WARMER FOR TUE NIGHT AND WED
NIGHT. THIS WILL KEEP THE HEAVY SNOW FAIRLY HIGH IN ELEVATION WHEN
THE HEAVIEST PRECIPITATION FALLS. IF ANY WINTER WEATHER PRODUCTS ARE
NECESSARY, LIKELY ELEVATION THAT WOULD BE AFFECTED WOULD BE ABOVE
7000FT, PERHAPS EVEN 7500FT.
THIS COLD FRONT COMES WITH A VERY STRONG WIND AND MAY NEED A
WIND ADVISORY FOR THE SNAKE RIVER PLAIN ON WED.
THU THROUGH SUN...THE NEAR TERM LOW DISRUPTS THIS CURRENT FLOW
AND YET ANOTHER LOW ARRIVES AT THE END OF THU AFTERNOON TO
CONTINUE THE RAIN AND SNOW. BUT IT COMES IN FROM THE NORTH,
MAKING TEMPERATURES MUCH COLDER, BUT FORTUNATELY THE PRECIPITATION
TURNS LIGHTER, AT LEAST BY FRI IF NOT THU. SOLID CHANCES FOR
PRECIPITATION CONTINUES THROUGH FRI, THEN SLIPS TO SLIGHT CHANCES
FOR MOST LOCATIONS ON THE WEEKEND, MAINLY IN THE HIGHLANDS BORDERING
WY.
TEMPERATURES THU NIGHT THROUGH SAT NIGHT CONTINUE TO GET BELOW
FREEZING IN THE HEAVILY POPULATED LOWER ELEVATIONS, SO STILL NOT
A GOOD TIME TO PLANT GARDENS IF NO PROTECTION IS AVAILABLE.
TEMPERATURES WILL RECOVER ABOVE FREEZING ON SUN NIGHT, ALTHOUGH
MAY STILL PRODUCE FROST.
WIND WILL RETURN TO A PATTERN OF GUSTY AFTERNOON WIND AND
LIGHT MORNING WIND.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 312 AM MDT MON APR 20 2026
UPPER LEVEL HIGH PRESSURE WILL KEEP SKIES CLEAR BELOW 8000FT
AGL, WITH NO CIGS EXPECTED. VSBY SHOULD STAY UNLIMITED. WIND IS
MOSTLY THE EFFECT OF THE SLOPE-VALLEY INTERACTION, STAYING AT
BARELY MENTIONING FOR WIND SHIFTS.
PIH WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION...MESSICK
AVIATION...MESSICK
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page