585  
WWUS85 KSLC 300909  
RFWSLC  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
309 AM MDT WED JUL 30 2025  
 
UTZ493-495-496-302315-  
/O.CON.KSLC.FW.W.0008.000000T0000Z-250801T0400Z/  
CENTRAL UTAH MOUNTAINS-COLOR COUNTRY WEST DESERT-  
COLOR COUNTRY MOUNTAINS-  
309 AM MDT WED JUL 30 2025  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THURSDAY  
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493,  
495, AND 496...  
 
* AFFECTED AREA...FIRE WEATHER ZONE 493 CENTRAL UTAH MOUNTAINS,  
FIRE WEATHER ZONE 495 COLOR COUNTRY WEST DESERT AND FIRE  
WEATHER ZONE 496 COLOR COUNTRY MOUNTAINS.  
 
* WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 30 TO 35 MPH  
DURING THE AFTERNOON AND EVENING EACH DAY.  
 
* RELATIVE HUMIDITY...AS LOW AS 5 TO 8 PERCENT. VERY POOR  
OVERNIGHT HUMIDITY RECOVERIES THROUGH THURSDAY MORNING.  
 
* IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED. ANY  
NEW FIRE STARTS OR EXISTING FIRES MAY SPREAD RAPIDLY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EITHER OCCURRING NOW...OR ARE IMMINENT. A COMBINATION OF  
STRONG WINDS...LOW RELATIVE HUMIDITY...AND HOT TEMPERATURES CAN  
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.  
 

 
 

 
 
UTZ489-492-497-498-302315-  
/O.CON.KSLC.FW.W.0008.250730T1800Z-250801T0400Z/  
SAN RAFAEL SWELL-CENTRAL UTAH WEST DESERT-MOJAVE DESERT-  
GRAND STAIRCASE-  
309 AM MDT WED JUL 30 2025  
 
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 10 PM  
MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER  
ZONES 489, 492, 497, AND 498...  
 
* AFFECTED AREA...FIRE WEATHER ZONE 489 SAN RAFAEL SWELL, FIRE  
WEATHER ZONE 492 CENTRAL UTAH WEST DESERT, FIRE WEATHER ZONE  
497 MOJAVE DESERT AND FIRE WEATHER ZONE 498 GRAND STAIRCASE.  
 
* WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 30 TO 35 MPH  
DURING THE AFTERNOON AND EVENING EACH DAY.  
 
* RELATIVE HUMIDITY...AS LOW AS 5 TO 8 PERCENT. VERY POOR  
OVERNIGHT HUMIDITY RECOVERIES THROUGH THURSDAY MORNING.  
 
* IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED. ANY  
NEW FIRE STARTS OR EXISTING FIRES MAY SPREAD RAPIDLY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE  
EITHER OCCURRING NOW...OR ARE IMMINENT. A COMBINATION OF STRONG  
WINDS...LOW RELATIVE HUMIDITY...AND HOT TEMPERATURES CAN  
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.  
 

 
 

 
 
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT  
HTTP://WEATHER.GOV/SALTLAKECITY  
 
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