049
WWUS75 KMSO 121647
NPWMSO

URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
1047 AM MDT Tue Aug 12 2025

MTZ003-131700-
/O.NEW.KMSO.LW.Y.0004.250813T1800Z-250814T0300Z/
Flathead/Mission Valleys-
1047 AM MDT Tue Aug 12 2025

...LAKE WIND ADVISORY IN EFFECT FROM NOON TO 9 PM MDT WEDNESDAY...

* WHAT...Southwest winds 10 to 20 mph with gusts up to 30 mph
  expected.

* WHERE...Flathead Lake.

* WHEN...From noon to 9 PM MDT Wednesday.

* 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.

&&

$$

IDZ007-008-130500-
/O.CON.KMSO.HT.Y.0006.250812T1900Z-250813T0500Z/
Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region-
947 AM PDT Tue Aug 12 2025

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

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

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

* WHEN...Until 10 PM PDT this evening.

* 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.

&&

$$