WWUS75 KPIH 200912
NPWPIH

URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
312 AM MDT Wed May 20 2026

IDZ052-201500-
/O.CON.KPIH.FZ.W.0017.000000T0000Z-260520T1500Z/
Arco/Mud Lake Desert-
Including the cities of Craters of the Moon NM, INL, and Mud Lake
312 AM MDT Wed May 20 2026

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 30 degrees expected.

* WHERE...Arco/Mud Lake Desert.

* WHEN...Until 9 AM MDT this morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

IDZ051-053>055-201500-
/O.CON.KPIH.FR.Y.0007.000000T0000Z-260520T1500Z/
Shoshone/Lava Beds-Upper Snake River Plain-Lower Snake River
Plain-Eastern Magic Valley-
Including the cities of American Falls, Rexburg, Carey, Heyburn,
Richfield, Rupert, Burley, Shelley, Oakley, St. Anthony, Idaho
Falls, Pocatello, Fort Hall, Blackfoot, and Shoshone
312 AM MDT Wed May 20 2026

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING...

* WHAT...Temperatures as low as 32 to 36 will result in frost 
  formation.

* WHERE...Eastern Magic Valley, Shoshone/Lava Beds, Lower Snake 
  River Plain, and Upper Snake River Plain.

* WHEN...Until 9 AM MDT this morning.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Visit weather.gov/pocatello for more information.

JKeyes