WWUS75 KPIH 191819
NPWPIH

URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
1219 PM MDT Tue May 19 2026

IDZ052-201200-
/O.NEW.KPIH.FZ.W.0017.260520T0900Z-260520T1500Z/
Arco/Mud Lake Desert-
Including the cities of INL, Mud Lake, and Craters of the Moon NM
1219 PM MDT Tue May 19 2026

...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM MDT WEDNESDAY...

* WHAT...Sub-freezing temperatures as low as 29 degrees expected.

* WHERE...Arco/Mud Lake Desert.

* WHEN...From 3 AM to 9 AM MDT Wednesday.

* 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>055-201200-
/O.NEW.KPIH.FR.Y.0007.260520T0900Z-260520T1500Z/
Shoshone/Lava Beds-Upper Snake River Plain-Lower Snake River
Plain-Eastern Magic Valley-
Including the cities of Shelley, Burley, Rupert, Oakley, Fort
Hall, Pocatello, Rexburg, Idaho Falls, Carey, American Falls,
Heyburn, Blackfoot, Shoshone, Richfield, and St. Anthony
1219 PM MDT Tue May 19 2026

...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM MDT WEDNESDAY...

* WHAT...Temperatures as low as 33 degrees will result in frost 
  formation.

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

* WHEN...From 3 AM to 9 AM MDT Wednesday.

* 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.

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