452
WWUS75 KMSO 201625
NPWMSO

URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
1025 AM MDT Thu Aug 20 2026

IDZ007-008-211630-
/O.NEW.KMSO.HT.Y.0002.260821T1800Z-260822T0300Z/
Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region-
925 AM PDT Thu Aug 20 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM PDT FRIDAY...

* WHAT...Moderate to Major risk of heat effects expected.

* WHERE...Lower Hells Canyon/Salmon River Region and Orofino/Lower
  Clearwater Region.

* WHEN...From 11 AM to 8 PM PDT Friday.

* IMPACTS...This level of heat affects anyone without effective
  cooling and/or adequate hydration. Impacts likely in some health
  systems, heat-sensitive industries and infrastructure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$