081  
WWUS75 KMSO 031642  
NPWMSO  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE MISSOULA MT  
1042 AM MDT WED SEP 3 2025  
 
MTZ002-003-041645-  
/O.NEW.KMSO.WI.Y.0008.250904T1200Z-250905T0600Z/  
WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS-  
1042 AM MDT WED SEP 3 2025  
 
...WIND ADVISORY IN EFFECT FROM 6 AM THURSDAY TO MIDNIGHT MDT  
THURSDAY NIGHT...  
 
* WHAT...NORTHEAST WINDS 10 TO 20 MPH WITH GUSTS UP TO 40 MPH  
EXPECTED. ISOLATED HIGHER GUSTS ALONG HIGHWAY 35 ON THE EAST SIDE  
OF FLATHEAD LAKE AND THE SWAN RANGE, AS WELL AS HIGHWAY 93 ON THE  
WESTERN SLOPES OF THE WHITEFISH RANGE.  
 
* WHERE...FLATHEAD/MISSION VALLEYS AND WEST GLACIER REGION.  
 
* WHEN...FROM 6 AM THURSDAY TO MIDNIGHT MDT THURSDAY NIGHT.  
 
* IMPACTS...GUSTY WINDS WILL BLOW AROUND UNSECURED OBJECTS. TREE  
LIMBS COULD BE BLOWN DOWN AND A FEW POWER OUTAGES MAY RESULT.  
 
* ADDITIONAL DETAILS...THOSE PLANNING TO RECREATE ON AREA LAKES,  
ESPECIALLY FLATHEAD LAKE SHOULD BE PREPARED FOR CHOPPY CONDITIONS  
AND STRONG GUSTY WINDS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT, ESPECIALLY FOR HIGH  
PROFILE VEHICLES. USE EXTRA CAUTION.  
 

 
 

 
 
IDZ007-008-040600-  
/O.CON.KMSO.HT.Y.0008.000000T0000Z-250904T0600Z/  
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-  
942 AM PDT WED SEP 3 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING
 
 
* WHAT...EXTREME RISK OF HEAT EFFECTS.  
 
* WHERE...LOWER HELLS CANYON/SALMON RIVER REGION AND  
OROFINO/GRANGEVILLE REGION.  
 
* WHEN...UNTIL 11 PM PDT THIS EVENING.  
 
* IMPACTS...THIS LEVEL OF RARE AND/OR LONG DURATION EXTREME HEAT  
WITH LITTLE TO NO OVERNIGHT RELIEF AFFECTS ANYONE WITHOUT  
EFFECTIVE COOLING AND/OR ADEQUATE HYDRATION. IMPACTS LIKELY IN  
MOST 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.  
 

 
 

 
 
MTZ001-004-040600-  
/O.CON.KMSO.HT.Y.0008.000000T0000Z-250904T0600Z/  
KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION-  
1042 AM MDT WED SEP 3 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
* WHAT...MODERATE RISK OF HEAT EFFECTS.  
 
* WHERE...KOOTENAI/CABINET REGION AND LOWER CLARK FORK REGION.  
 
* WHEN...UNTIL MIDNIGHT MDT TONIGHT.  
 
* IMPACTS...THIS LEVEL OF HEAT AFFECTS MOST INDIVIDUALS SENSITIVE TO  
HEAT, ESPECIALLY THOSE WITHOUT EFFECTIVE COOLING AND/OR ADEQUATE  
HYDRATION. IMPACTS POSSIBLE IN SOME HEALTH SYSTEMS AND IN  
HEAT-SENSITIVE INDUSTRIES.  
 
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.  
 

 
 

 
 
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