817
WWUS75 KPIH 201947
NPWPIH

URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
147 PM MDT Thu Aug 20 2026

IDZ051-054>057-075-210400-
/O.CON.KPIH.HT.Y.0006.000000T0000Z-260821T0400Z/
/O.CON.KPIH.HT.Y.0007.260821T1800Z-260822T0400Z/
Shoshone/Lava Beds-Lower Snake River Plain-Eastern Magic Valley-
Southern Hills/Albion Mountains-Raft River Region-Wood River
Foothills-
Including the cities of Albion, Picabo, Bellevue, Heyburn, Holbrook,
Shelley, Rockland, Fort Hall, Shoshone, American Falls, Hailey,
Rupert, Richfield, Oakley, Pocatello, Almo, Blackfoot, Malta, Burley,
and Carey
147 PM MDT Thu Aug 20 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM MDT THIS EVENING...
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 10 PM MDT FRIDAY...

* WHAT...Widespread temperatures ranging 94 to 100 degrees.

* WHERE...Wood River Foothills, Eastern Magic Valley, Shoshone/Lava
  Beds, Lower Snake River Plain, Raft River Region, and Southern
  Hills/Albion Mountains.

* WHEN...For the first Heat Advisory, until 10 PM MDT this evening.
  For the second Heat Advisory, from noon to 10 PM MDT Friday.

* IMPACTS...Hot temperatures may cause heat illnesses.

$$

IDZ052-053-058-059-210400-
/O.CON.KPIH.HT.Y.0007.260821T1800Z-260822T0400Z/
Arco/Mud Lake Desert-Upper Snake River Plain-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-
Including the cities of McCammon, Idaho Falls, Preston, Mud Lake,
Rexburg, Downey, St. Anthony, Inkom, Thatcher, Craters of the
Moon NM, INL, Lava Hot Springs, and Malad
147 PM MDT Thu Aug 20 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 10 PM MDT FRIDAY...

* WHAT...Widespread temperatures ranging 93 to 100 degrees.

* WHERE...Arco/Mud Lake Desert, Franklin/Eastern Oneida Region, Marsh
  and Arbon Highlands, and Upper Snake River Plain.

* WHEN...From noon to 10 PM MDT Friday.

* IMPACTS...Hot temperatures may cause heat illnesses.

$$

Visit weather.gov/pocatello for more information.

McKaughan