WWUS75 KPIH 181435
NPWPIH

URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
835 AM MDT Mon May 18 2026

IDZ051-052-181545-
/O.EXP.KPIH.FZ.W.0015.000000T0000Z-260518T1500Z/
Shoshone/Lava Beds-Arco/Mud Lake Desert-
Including the cities of Shoshone, Richfield, INL, Craters of the
Moon NM, Mud Lake, and Carey
835 AM MDT Mon May 18 2026

...FREEZE WARNING WILL EXPIRE AT 9 AM MDT THIS MORNING...

The threat has ended.

$$

IDZ054-190300-
/O.EXP.KPIH.FR.Y.0005.000000T0000Z-260518T1500Z/
/O.CON.KPIH.LW.Y.0006.000000T0000Z-260519T0300Z/
Lower Snake River Plain-
Including the cities of Shelley, Blackfoot, American Falls, Fort
Hall, and Pocatello
835 AM MDT Mon May 18 2026

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING 
FOR AMERICAN FALLS RESERVOIR...
...FROST ADVISORY WILL EXPIRE AT 9 AM MDT THIS MORNING...

* WHAT...North winds 20 to 30 mph with gusts up to 45 mph for 
  American Falls Reservoir.

* WHERE...Lower Snake River Plain.

* WHEN...Until 9 PM MDT this evening.

* IMPACTS...Strong winds and rough waves on area lakes will create 
  hazardous conditions for small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters on area lakes should use extra caution since strong winds 
and rough waves can overturn small craft.

&&

$$

IDZ053-055-181545-
/O.EXP.KPIH.FR.Y.0005.000000T0000Z-260518T1500Z/
Upper Snake River Plain-Eastern Magic Valley-
Including the cities of Rupert, Heyburn, St. Anthony, Burley,
Oakley, Rexburg, and Idaho Falls
835 AM MDT Mon May 18 2026

...FROST ADVISORY WILL EXPIRE AT 9 AM MDT THIS MORNING...

The threat has ended.

$$

Visit weather.gov/pocatello for more information.

Messick