Red Flag Warning
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
620 WWUS85 KSLC 032348 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 548 PM MDT Sun Aug 3 2025 UTZ478-041100- /O.EXA.KSLC.FW.W.0009.250804T1800Z-250805T0300Z/ Salt Lake Desert- 548 PM MDT Sun Aug 3 2025 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 478... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 9 PM MDT Monday. * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, mainly south of Interstate 80. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph across areas south of I-80 and southwest 5 to 10 mph with gusts to around 20 mph north of I-80. * RELATIVE HUMIDITY...5 to 9 percent south of I-80, and 10-15 percent north. * 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 warm temperatures can contribute to extreme fire behavior. && $$ UTZ483-484-488-489-492-494-495-497-498-041100- /O.CON.KSLC.FW.W.0009.250804T1800Z-250807T0300Z/ Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah West Desert- Henry Mountains-Color Country West Desert-Mojave Desert- Grand Staircase- 548 PM MDT Sun Aug 3 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON MONDAY TO 9 PM MDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 483, 484, 488, 489, 492, 494, 495, 497, AND 498... * AFFECTED AREA...Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather Zone 488 Manti National Forest, Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 495 Color Country West Desert, Fire Weather Zone 497 Mojave Desert and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Gusts around 40 mph possible Monday afternoon across zones 492 and 495. * RELATIVE HUMIDITY...5 to 10 percent Monday, increasing to 8 to 12 percent by Wednesday. Poor overnight recoveries near 15 to 20 percent except increasing to 25 to 35 percent 498 and southern 495 Tuesday night. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ479-481-041100- /O.CON.KSLC.FW.W.0009.250804T1800Z-250805T0300Z/ Wasatch Mountains-Western Ashley National Forest- 548 PM MDT Sun Aug 3 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 479 AND 481... * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains and Fire Weather Zone 481 Western Ashley National Forest. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...7 to 14 percent, lowest south of I-80. * 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 warm temperatures can contribute to extreme fire behavior. && $$ UTZ493-496-041100- /O.CON.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Central Utah Mountains-Color Country Mountains- 548 PM MDT Sun Aug 3 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON MONDAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493 AND 496... * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains and Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...6 to 12 percent with poor overnight recoveries near 15 to 25 percent most locations, higher in sheltered/irrigated valleys. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ482-041100- /O.CON.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Western Uintah Basin- 548 PM MDT Sun Aug 3 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON MONDAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 482... * AFFECTED AREA...Fire Weather Zone 482 Western Uintah Basin. * WINDS...Southwest to west 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...5 to 9 percent with very poor overnight recoveries near 15 to 20 percent. * 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 warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity