FXUS65 KPIH 050833

AFDPIH



Area Forecast Discussion

National Weather Service Pocatello ID

233 AM MDT Tue May 5 2026



.KEY MESSAGES...



- Breezy Winds today with Lake Wind Advisory: Gusty northeast

  winds in place which has resulted in the issuance of a Lake 

  Wind Advisory for American Falls Reservoir.



- Northerly flow will usher in much cooler air, with Freeze

  Warnings and Frost Advisories in effect for parts of eastern 

  Idaho early Wednesday morning.



- Warming Trend Returns: High pressure will build late this 

  week and into the weekend, returning temperatures to above- 

  normal levels.



&&



.DISCUSSION...

Issued at 222 AM MDT Tue May 5 2026



A cold front has moved through southern Idaho overnight and

expect much cooler conditions today with high temperatures in

the 40s and 50s mountains and 60s in lower elevations. Breezy to

windy northerly and northeasterly winds with gusts 20 to 30 mph

will also be present and a Lake Wind Advisory is in effect for

the American Falls Reservoir. The other main impact will be the

potential for sub freezing overnight lows tonight and frost

advisories or freeze warnings are in effect for the Snake River

Plain and Eastern Magic Valley early Wednesday morning. It will

remain cool Wednesday but then another significant warming 

trend begins on Thursday with high temperatures back into the 

70s in lower elevations. Above normal temperatures are expected 

through early next week with a slight cool down Saturday but 

then lower elevation highs in the 80s by Monday into next 

Tuesday. 



Will have some showers this morning and afternoon especially

near the Utah border, but then mainly dry conditions with a

slightly better chance for showers again on Saturday with a weak

upper level system.  



&&



.AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/...

Issued at 936 PM MDT Mon May 4 2026



Cold front will continue to make its way through Eastern Idaho 

tonight into tomorrow morning. So have kept some VCSH in the TAFs 

for the next few hours as the HRRR shows showers continuing. Impacts 

at a specific terminal seem low confidence though. Some dry time 

Tuesday morning will be expected before another chance at afternoon 

showers and isolated storms. It will also be breezy on Tuesday with 

gusts ranging from 20 to 30 kts even outside of any storm activity. 

Most of the forecast period will bring VFR conditions with the 

exception being if a storm is able to track directly over at 

terminal when drops to MVFR CIGs or VIS would be likely.



&&



.PIH WATCHES/WARNINGS/ADVISORIES...

Frost Advisory from 3 AM to 9 AM MDT Wednesday for IDZ051-055.

Freeze Warning from 3 AM to 9 AM MDT Wednesday for IDZ052>054.



&&



$$



DISCUSSION...GK

AVIATION...AMM