Alert archive / Utah / Red Flag Warnings in 2025
Red Flag Warning 9, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Aug 2, 2025, 1:42 PM MDT for 26 counties in Utah. It took effect at Aug 4, 2025, 12:00 PM MDT. It was in force for 5 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 2, 2025, 1:42 PM MDT (19:42 UTC)
- In effect from
- Aug 4, 2025, 12:00 PM MDT
- Expired
- Aug 9, 2025, 9:00 PM MDT
- In force
- 5 days
- Issued by
- NWS Salt Lake City, UT
All 26 counties
Beaver County, UT, Box Elder County, UT, Cache County, UT, Carbon County, UT, Davis County, UT, Duchesne County, UT, Emery County, UT, Garfield County, UT, Iron County, UT, Juab County, UT, Kane County, UT, Millard County, UT, Morgan County, UT, Piute County, UT, Rich County, UT, Salt Lake County, UT, San Juan County, UT, Sanpete County, UT, Sevier County, UT, Summit County, UT, Tooele County, UT, Utah County, UT, Wasatch County, UT, Washington County, UT, Wayne County, UT, Weber County, UT
The radar
The Salt Lake City radar (KMTX), 193 km from the middle of the area, began a volume at 19:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 7.7 hours before the alert went out and 132 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3716 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
924 WWUS85 KSLC 021942 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 142 PM MDT Sat Aug 2 2025 UTZ483-484-488-489-494-498-030545- /O.UPG.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/ /O.NEW.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ /O.CON.KSLC.FW.W.0008.000000T0000Z-250803T0400Z/ Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Henry Mountains- Grand Staircase- 142 PM MDT Sat Aug 2 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 483, 484, 488, 489, 494, AND 498... ...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 483, 484, 488, 489, 494, AND 498... 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 Monday to 9 PM MDT Tuesday. The Fire Weather Watch is no longer in effect. * 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 494 Henry Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both Saturday, Monday, and Tuesday afternoons. Lighter winds are forecast for Sunday, remaining in the 5 to 10 mph range with gusts of 10 to 20 mph. * RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each afternoon with very poor overnight recoveries. * 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. && $$ UTZ493-496-030545- /O.UPG.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/ /O.NEW.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ /O.CON.KSLC.FW.W.0008.000000T0000Z-250803T0400Z/ Central Utah Mountains-Color Country Mountains- 142 PM MDT Sat Aug 2 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493 AND 496... ...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493 AND 496... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon Monday to 9 PM MDT Tuesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains and Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both Saturday, Monday, and Tuesday afternoons. Lighter winds are forecast for Sunday, remaining in the 5 to 10 mph range with gusts of 10 to 20 mph. * RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each afternoon with very poor overnight recoveries. Some elevations above 8500 feet may see minimum humidities closer to 10 to 15 percent Tuesday afternoon and evening. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ492-495-497-030545- /O.UPG.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/ /O.NEW.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 142 PM MDT Sat Aug 2 2025 ...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... 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 Monday to 9 PM MDT Tuesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest winds 15 to 25 mph with gusts 30 to 35 mph. * RELATIVE HUMIDITY...Falling into the 5 to 9 percent range with very poor overnight recoveries. * 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
22 follow-up statements
546 WWUS85 KSLC 030453 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 1053 PM MDT Sat Aug 2 2025 UTZ483-484-488-489-492>498-031300- /O.CON.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah West Desert- Central Utah Mountains-Henry Mountains-Color Country West Desert- Color Country Mountains-Mojave Desert-Grand Staircase- 1053 PM MDT Sat Aug 2 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON MONDAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 483, 484, 488, 489, 492, 493, 494, 495, 496, 497, AND 498... * AFFECTED AREA...Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather Zone 488 Manti National Forest, Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 495 Color Country West Desert, Fire Weather Zone 496 Color Country Mountains, Fire Weather Zone 497 Mojave Desert and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both Monday and Tuesday afternoons. * RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each afternoon with very poor overnight recoveries. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
439 WWUS85 KSLC 030837 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 237 AM MDT Sun Aug 3 2025 UTZ483-484-488-489-492>498-032315- /O.CON.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah West Desert- Central Utah Mountains-Henry Mountains-Color Country West Desert- Color Country Mountains-Mojave Desert-Grand Staircase- 237 AM 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 483, 484, 488, 489, 492, 493, 494, 495, 496, 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 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 495 Color Country West Desert, Fire Weather Zone 496 Color Country Mountains, Fire Weather Zone 497 Mojave Desert and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both Monday and Tuesday afternoons. * RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each afternoon with very poor overnight recoveries. * 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
500 WWUS85 KSLC 031706 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 1106 AM MDT Sun Aug 3 2025 UTZ479-481-040515- /O.EXB.KSLC.FW.W.0009.250804T1800Z-250805T0300Z/ Wasatch Mountains-Western Ashley National Forest- 1106 AM MDT Sun Aug 3 2025 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 479 AND 481... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 9 PM MDT Monday. * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains and Fire Weather Zone 481 Western Ashley National Forest. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...7 to 14 percent, lowest south of I-80. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ482-040515- /O.EXA.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Western Uintah Basin- 1106 AM MDT Sun Aug 3 2025 ...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 482... 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 Monday to 9 PM MDT Tuesday. * 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. && $$ UTZ483-484-488-489-492-494-495-497-498-040515- /O.EXT.KSLC.FW.W.0009.250804T1800Z-250807T0300Z/ Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah West Desert- Henry Mountains-Color Country West Desert-Mojave Desert- Grand Staircase- 1106 AM MDT Sun Aug 3 2025 ...RED FLAG WARNING NOW IN EFFECT FROM NOON MONDAY TO 9 PM MDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 483, 484, 488, 489, 492, 494, 495, 497, AND 498... * AFFECTED AREA...Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather Zone 488 Manti National Forest, Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 495 Color Country West Desert, Fire Weather Zone 497 Mojave Desert and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...5 to 10 percent Monday, increasing to 8 to 12 percent by Wednesday. Poor overnight recoveries near 15 to 20 percent except increasing to 25 to 35 percent 498 and southern 495 Tuesday night. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ493-496-040515- /O.CON.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Central Utah Mountains-Color Country Mountains- 1106 AM 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
620 WWUS85 KSLC 032348 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 548 PM MDT Sun Aug 3 2025 UTZ478-041100- /O.EXA.KSLC.FW.W.0009.250804T1800Z-250805T0300Z/ Salt Lake Desert- 548 PM MDT Sun Aug 3 2025 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 478... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 9 PM MDT Monday. * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, mainly south of Interstate 80. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph across areas south of I-80 and southwest 5 to 10 mph with gusts to around 20 mph north of I-80. * RELATIVE HUMIDITY...5 to 9 percent south of I-80, and 10-15 percent north. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ 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
366 WWUS85 KSLC 040915 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 315 AM MDT Mon Aug 4 2025 UTZ483-484-488-489-492-494-495-497-498-042315- /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- 315 AM MDT Mon Aug 4 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY 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. && $$ UTZ478-479-481-042315- /O.CON.KSLC.FW.W.0009.250804T1800Z-250805T0300Z/ Salt Lake Desert-Wasatch Mountains-Western Ashley National Forest- 315 AM MDT Mon Aug 4 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478, 479, AND 481... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, Fire Weather Zone 479 Wasatch Mountains and Fire Weather Zone 481 Western Ashley National Forest. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph across areas south of I-80 and southwest 5 to 10 mph with gusts to around 20 mph north of I-80. * RELATIVE HUMIDITY...5 to 9 percent south of I-80, and 10 to 15 percent north. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ493-496-042315- /O.CON.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Central Utah Mountains-Color Country Mountains- 315 AM MDT Mon Aug 4 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY 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. && $$ UTZ482-042315- /O.CON.KSLC.FW.W.0009.250804T1800Z-250806T0300Z/ Western Uintah Basin- 315 AM MDT Mon Aug 4 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 482... * AFFECTED AREA...Fire Weather Zone 482 Western Uintah Basin. * WINDS...Southwest to west 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...5 to 9 percent with very poor overnight recoveries near 15 to 20 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
108 WWUS85 KSLC 042019 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 219 PM MDT Mon Aug 4 2025 UTZ481>484-488-489-492-494-497-050600- /O.EXT.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah West Desert- Henry Mountains-Mojave Desert- 219 PM MDT Mon Aug 4 2025 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 492, 494, AND 497... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be highest this afternoon and Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...5 to 10 percent Monday, increasing to 8 to 12 percent by Wednesday and Thursday. Poor overnight recoveries near 15 to 25 percent increasing to around 30 to 35 percent across eastern Utah zones by 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 warm temperatures can contribute to extreme fire behavior. && $$ UTZ493-495-496-498-050600- /O.EXT.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah Mountains-Color Country West Desert- Color Country Mountains-Grand Staircase- 219 PM MDT Mon Aug 4 2025 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493, 495, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 495 Color Country West Desert, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. Winds are likely to be highest this afternoon and Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...6 to 12 percent with poor overnight recoveries near 25 to 35 percent for most locations, increasing to 35 to 45 percent by Wednesday and Thursday mornings. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ478-479-050300- /O.CON.KSLC.FW.W.0009.000000T0000Z-250805T0300Z/ Salt Lake Desert-Wasatch Mountains- 219 PM MDT Mon Aug 4 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478 AND 479... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert and Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph across areas south of I-80 and southwest 10 to 15 mph with gusts to around 25 mph north of I-80. * RELATIVE HUMIDITY...5 to 10 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
490 WWUS85 KSLC 050302 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 902 PM MDT Mon Aug 4 2025 UTZ478-479-050415- /O.EXP.KSLC.FW.W.0009.000000T0000Z-250805T0300Z/ Salt Lake Desert-Wasatch Mountains- 902 PM MDT Mon Aug 4 2025 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478 AND 479... Winds have decreased across the area this evening, thus the Red Flag Warning has been allowed to expire. $$ UTZ481>484-488-489-492-494-497-051115- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah West Desert- Henry Mountains-Mojave Desert- 902 PM MDT Mon Aug 4 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 492, 494, AND 497... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be strongest on Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...8 to 12 percent by Wednesday and Thursday. Poor overnight recoveries near 15 to 25 percent increasing to around 30 to 35 percent across eastern Utah zones by 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 warm temperatures can contribute to extreme fire behavior. && $$ UTZ493-495-496-498-051115- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah Mountains-Color Country West Desert- Color Country Mountains-Grand Staircase- 902 PM MDT Mon Aug 4 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493, 495, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 495 Color Country West Desert, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. Winds are likely to be strongest Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...6 to 12 percent with poor overnight recoveries near 25 to 35 percent for most locations, increasing to 35 to 45 percent by Wednesday and Thursday mornings. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
351 WWUS85 KSLC 050918 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 318 AM MDT Tue Aug 5 2025 UTZ481>484-488-489-492-494-497-052330- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah West Desert- Henry Mountains-Mojave Desert- 318 AM MDT Tue Aug 5 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 492, 494, AND 497... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be strongest on Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...8 to 12 percent by Wednesday and Thursday. Poor overnight recoveries near 15 to 25 percent increasing to around 30 to 35 percent across eastern Utah zones by 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 warm temperatures can contribute to extreme fire behavior. && $$ UTZ493-495-496-498-052330- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah Mountains-Color Country West Desert- Color Country Mountains-Grand Staircase- 318 AM MDT Tue Aug 5 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493, 495, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 495 Color Country West Desert, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. Winds are likely to be strongest Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...6 to 12 percent with poor overnight recoveries near 25 to 35 percent for most locations, increasing to 35 to 45 percent by Wednesday and Thursday mornings. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
030 WWUS85 KSLC 052001 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 201 PM MDT Tue Aug 5 2025 UTZ479-060615- /O.EXB.KSLC.FW.W.0009.250807T1800Z-250808T0300Z/ Wasatch Mountains- 201 PM MDT Tue Aug 5 2025 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479... 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 Thursday. * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...10 to 15 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. && $$ UTZ481>484-488-489-493-494-496-498-060615- /O.EXT.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah Mountains- Henry Mountains-Color Country Mountains-Grand Staircase- 201 PM MDT Tue Aug 5 2025 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather Zone 488 Manti National Forest, Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be the strongest on Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...8 to 12 percent across most areas, except 493 and 496 where minimum RH will reach 12 to 16 percent. Poor overnight recoveries of 20 to 30 percent outside of higher terrain and sheltered/irrigated valleys where RH may reach 35 to 55 percent overnight. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ492-495-497-060615- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 201 PM MDT Tue Aug 5 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be the strongest on Thursday afternoon, with gusts up to 45 mph in localized areas. * RELATIVE HUMIDITY...6 to 10 percent. Poor overnight recoveries of 15 to 25 percent outside of eastern 492 and southern 495 where RH may reach 35 to 50 percent overnight. * 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
595 WWUS85 KSLC 060418 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 1018 PM MDT Tue Aug 5 2025 UTZ481>484-488-489-493-494-496-498-061230- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah Mountains- Henry Mountains-Color Country Mountains-Grand Staircase- 1018 PM MDT Tue Aug 5 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be the strongest on Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...8 to 12 percent across most areas, except 493 and 496 where minimum RH will reach 12 to 16 percent. Poor overnight recoveries of 20 to 30 percent outside of higher terrain and sheltered/irrigated valleys where RH may reach 35 to 55 percent overnight. * 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. && $$ UTZ492-495-497-061230- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 1018 PM MDT Tue Aug 5 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be the strongest on Thursday afternoon, with gusts up to 45 mph in localized areas. * RELATIVE HUMIDITY...6 to 10 percent. Poor overnight recoveries of 15 to 25 percent outside of eastern 492 and southern 495 where RH may reach 35 to 50 percent overnight. * 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. && $$ UTZ479-061230- /O.CON.KSLC.FW.W.0009.250807T1800Z-250808T0300Z/ Wasatch Mountains- 1018 PM MDT Tue Aug 5 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479... * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...10 to 15 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
643 WWUS85 KSLC 060919 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 319 AM MDT Wed Aug 6 2025 UTZ481>484-488-489-493-494-496-498-062330- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah Mountains- Henry Mountains-Color Country Mountains-Grand Staircase- 319 AM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be the strongest on Thursday afternoon, with gusts up to 40 mph in localized areas. * RELATIVE HUMIDITY...8 to 12 percent across most areas, except the central and southern mountains where minimum RH will reach 12 to 16 percent. Poor overnight recoveries of 20 to 30 percent outside of higher terrain and sheltered/irrigated valleys where RH may reach 35 to 55 percent overnight. * 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. && $$ UTZ492-495-497-062330- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 319 AM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. Winds are likely to be the strongest on Thursday afternoon, with gusts up to 45 mph in localized areas. * RELATIVE HUMIDITY...6 to 10 percent. Poor overnight recoveries of 15 to 25 percent outside of eastern 492 and southern 495 where RH may reach 35 to 45 percent overnight. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ479-062330- /O.CON.KSLC.FW.W.0009.250807T1800Z-250808T0300Z/ Wasatch Mountains- 319 AM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479... * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...10 to 15 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
743 WWUS85 KSLC 061958 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 158 PM MDT Wed Aug 6 2025 UTZ481>484-488-489-493-494-496-498-071100- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah Mountains- Henry Mountains-Color Country Mountains-Grand Staircase- 158 PM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph for the remainder of Wednesday as well as Friday. Southwest winds 15 to 25 mph with gusts up to 40 mph on Thursday. * RELATIVE HUMIDITY...8 to 12 percent across most areas, except the central and southern mountains where minimum RH will reach 12 to 16 percent. Poor overnight recoveries of 20 to 30 percent outside of higher terrain and sheltered/irrigated valleys where RH may reach 35 to 55 percent overnight. * 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. && $$ UTZ492-495-497-071100- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 158 PM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph for the remainder of Wednesday. Southwest winds 15 to 25 mph with gusts to 40 mph on Thursday. Winds are likely to be the strongest on Thursday afternoon, with gusts up to 45 mph in localized areas. * RELATIVE HUMIDITY...6 to 10 percent. Poor overnight recoveries of 15 to 25 percent outside of eastern 492 and southern 495 where RH may reach 35 to 45 percent overnight. * 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. && $$ UTZ479-071100- /O.CON.KSLC.FW.W.0009.250807T1800Z-250808T0300Z/ Wasatch Mountains- 158 PM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479... * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...10 to 15 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
009 WWUS85 KSLC 070337 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 937 PM MDT Wed Aug 6 2025 UTZ481>484-488-489-493-494-496-498-071245- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah Mountains- Henry Mountains-Color Country Mountains-Grand Staircase- 937 PM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph Thursday, decreasing slightly to 10 to 20 mph with gusts to 35 mph Friday. * RELATIVE HUMIDITY...8 to 12 percent, except increasing to 10 to 15 percent western Ashley National Forest Friday. Poor overnight recoveries ranging from around 20 to 35 percent in most locations, decreasing across southeastern Utah Thursday night to 15 to 25 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. && $$ UTZ492-495-497-071245- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 937 PM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph. Some typically windier locations across the Central Utah West Desert and Color Country West Desert may see wind gusts up to 45 mph. * RELATIVE HUMIDITY...5 to 10 percent with poor overnight recoveries near 15 to 25 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ479-071245- /O.CON.KSLC.FW.W.0009.250807T1800Z-250808T0300Z/ Wasatch Mountains- 937 PM MDT Wed Aug 6 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479... * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...10 to 15 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
681 WWUS85 KSLC 070924 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 324 AM MDT Thu Aug 7 2025 UTZ478-072200- /O.EXA.KSLC.FW.W.0009.250807T1800Z-250808T0300Z/ Salt Lake Desert- 324 AM MDT Thu Aug 7 2025 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 478... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon today to 9 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...8 to 15 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ481>484-488-489-493-494-496-498-072200- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Central Utah Mountains- Henry Mountains-Color Country Mountains-Grand Staircase- 324 AM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph Thursday afternoon, and 10 to 20 mph with gusts to 35 mph Friday afternoon. * RELATIVE HUMIDITY...8 to 12 percent, except increasing to 10 to 15 percent western Ashley National Forest Friday. Poor overnight recoveries ranging from around 20 to 35 percent in most locations, decreasing across southeastern Utah Thursday night to 15 to 25 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. && $$ UTZ479-072200- /O.CON.KSLC.FW.W.0009.250807T1800Z-250808T0300Z/ Wasatch Mountains- 324 AM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479... * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...10 to 15 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ492-495-497-072200- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 324 AM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph. Some typically windier locations across the Central Utah West Desert and Color Country West Desert may see wind gusts up to 45 mph. * RELATIVE HUMIDITY...5 to 10 percent with poor overnight recoveries near 15 to 25 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
645 WWUS85 KSLC 072039 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 239 PM MDT Thu Aug 7 2025 UTZ493-496-498-080445- /O.EXT.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ Central Utah Mountains-Color Country Mountains-Grand Staircase- 239 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph Thursday afternoon, and 10 to 20 mph with gusts to 35 mph Friday and Saturday afternoons. * RELATIVE HUMIDITY...8 to 12 percent, except increasing to 10 to 15 percent western Ashley National Forest Friday and Saturday. Poor overnight recoveries ranging from around 20 to 35 percent in most locations, decreasing across southeastern Utah Thursday night to 15 to 25 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ481>484-488-489-494-080445- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Henry Mountains- 239 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, AND 494... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, 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 and Fire Weather Zone 494 Henry Mountains. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph Thursday through Thursday evening, and 10 to 20 mph with gusts to 35 mph Friday afternoon. * RELATIVE HUMIDITY...8 to 12 percent, except increasing to 10 to 15 percent western Ashley National Forest Friday. Poor overnight recoveries ranging from around 20 to 35 percent in most locations, decreasing across southeastern Utah Thursday night to 15 to 25 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. && $$ UTZ478-479-080300- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Salt Lake Desert-Wasatch Mountains- 239 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478 AND 479... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert and Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...8 to 15 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ492-495-497-080300- /O.CON.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 239 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph. Some typically windier locations across the Central Utah West Desert and Color Country West Desert may see wind gusts up to 45 mph. * RELATIVE HUMIDITY...5 to 10 percent with poor overnight recoveries near 15 to 25 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
563 WWUS85 KSLC 080244 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 844 PM MDT Thu Aug 7 2025 UTZ478-479-080345- /O.EXP.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Salt Lake Desert-Wasatch Mountains- 844 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478 AND 479... Wind gusts will continue to decrease through the evening, resulting in a corresponding decrease to critical fire weather conditions. $$ UTZ492-495-497-080345- /O.EXP.KSLC.FW.W.0009.000000T0000Z-250808T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 844 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... Wind gusts will continue to decrease through the evening, resulting in a corresponding decrease to critical fire weather conditions. $$ UTZ481>484-488-489-494-081100- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest-San Rafael Swell-Henry Mountains- 844 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, 488, 489, AND 494... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather Zone 488 Manti National Forest, Fire Weather Zone 489 San Rafael Swell and Fire Weather Zone 494 Henry Mountains. * WINDS...West 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...8 to 12 percent, except increasing to 10 to 15 percent western Ashley National Forest Friday. Poor overnight recoveries ranging from around 20 to 35 percent in the Western Ashley National Forest, decreasing across southeastern Utah Thursday night to 15 to 25 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ493-496-498-081100- /O.CON.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ Central Utah Mountains-Color Country Mountains-Grand Staircase- 844 PM MDT Thu Aug 7 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest to west 15 to 25 mph with gusts up to 40 mph Friday. * RELATIVE HUMIDITY...5 to 10 percent with poor overnight recoveries near 15 to 25 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
239 WWUS85 KSLC 080908 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 308 AM MDT Fri Aug 8 2025 UTZ489-494-082200- /O.EXT.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ San Rafael Swell-Henry Mountains- 308 AM MDT Fri Aug 8 2025 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489 AND 494... * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell and Fire Weather Zone 494 Henry Mountains. * WINDS...West 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...8 to 12 percent, except increasing to 10 to 15 percent western Ashley National Forest Friday. Poor overnight recoveries ranging from around 20 to 35 percent in the Western Ashley National Forest, decreasing across southeastern Utah Thursday night to 15 to 25 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ481>484-488-082200- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest- 308 AM MDT Fri Aug 8 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, AND 488... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau and Fire Weather Zone 488 Manti National Forest. * WINDS...West 15 to 25 mph with gusts up to 35 mph this afternoon. * RELATIVE HUMIDITY...Falling into the 10 to 15 percent range this afternoon. * 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. && $$ UTZ493-496-498-082200- /O.CON.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ Central Utah Mountains-Color Country Mountains-Grand Staircase- 308 AM MDT Fri Aug 8 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 493, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...West 15 to 25 mph with gusts up to 40 mph this afternoon. * RELATIVE HUMIDITY...Falling into the 5 to 10 percent range this afternoon. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
467 WWUS85 KSLC 081958 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 158 PM MDT Fri Aug 8 2025 UTZ481>484-488-090300- /O.CON.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest- 158 PM MDT Fri Aug 8 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, AND 488... * AFFECTED AREA...Fire Weather Zone 481 Western Ashley National Forest, Fire Weather Zone 482 Western Uintah Basin, Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau and Fire Weather Zone 488 Manti National Forest. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Around 10 to 15 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. && $$ UTZ489-493-494-496-498-090400- /O.CON.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ San Rafael Swell-Central Utah Mountains-Henry Mountains- Color Country Mountains-Grand Staircase- 158 PM MDT Fri Aug 8 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...West 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...8 to 12 percent, except 10 to 15 percent western Ashley National Forest. Poor overnight recoveries ranging from around 20 to 35 percent in the Western Ashley National Forest, decreasing across southeastern Utah to 15 to 25 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
112 WWUS85 KSLC 090248 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 848 PM MDT Fri Aug 8 2025 UTZ481>484-488-090400- /O.EXP.KSLC.FW.W.0009.000000T0000Z-250809T0300Z/ Western Ashley National Forest-Western Uintah Basin- Southern Ashley National Forest-Tavaputs Plateau- Manti National Forest- 848 PM MDT Fri Aug 8 2025 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 481, 482, 483, 484, AND 488... Wind gusts will continue to decrease through the evening, resulting in a corresponding decrease to critical fire weather conditions. $$ UTZ489-493-494-496-498-091100- /O.CON.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ San Rafael Swell-Central Utah Mountains-Henry Mountains- Color Country Mountains-Grand Staircase- 848 PM MDT Fri Aug 8 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Poor overnight recoveries, especially at lower elevations, with daytime minimum humidity values around 7-15% Saturday. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
273 WWUS85 KSLC 090845 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 245 AM MDT Sat Aug 9 2025 UTZ482>484-488-092200- /O.EXB.KSLC.FW.W.0009.250809T1800Z-250810T0300Z/ Western Uintah Basin-Southern Ashley National Forest- Tavaputs Plateau-Manti National Forest- 245 AM MDT Sat Aug 9 2025 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 482, 483, 484, AND 488... 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 today to 9 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 482 Western Uintah Basin, Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau and Fire Weather Zone 488 Manti National Forest. * WINDS...West-northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Falling into the 9-12 percent range this afternoon. * 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. && $$ UTZ489-493-494-496-498-092200- /O.CON.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ San Rafael Swell-Central Utah Mountains-Henry Mountains- Color Country Mountains-Grand Staircase- 245 AM MDT Sat Aug 9 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...West-northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Poor overnight recoveries, especially at lower elevations, with daytime minimum humidity values falling into the 7-15 percent range this afternoon. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
050 WWUS85 KSLC 091930 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 130 PM MDT Sat Aug 9 2025 UTZ482>484-488-100300- /O.CON.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ Western Uintah Basin-Southern Ashley National Forest- Tavaputs Plateau-Manti National Forest- 130 PM MDT Sat Aug 9 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 482, 483, 484, AND 488... * AFFECTED AREA...Fire Weather Zone 482 Western Uintah Basin, Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau and Fire Weather Zone 488 Manti National Forest. * WINDS...West to northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...9 to 12 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. && $$ UTZ489-493-494-496-498-100300- /O.CON.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ San Rafael Swell-Central Utah Mountains-Henry Mountains- Color Country Mountains-Grand Staircase- 130 PM MDT Sat Aug 9 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489, 493, 494, 496, AND 498... * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 493 Central Utah Mountains, Fire Weather Zone 494 Henry Mountains, Fire Weather Zone 496 Color Country Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...West to northwest 15 to 25 mph with gusts up to 35 mph except west to southwest 15 to 25 mph with gusts up to 35 mph Grand Staircase. * RELATIVE HUMIDITY...7 to 15 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
652 WWUS85 KSLC 100258 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 858 PM MDT Sat Aug 9 2025 UTZ482>484-488-100400- /O.EXP.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ Western Uintah Basin-Southern Ashley National Forest- Tavaputs Plateau-Manti National Forest- 858 PM MDT Sat Aug 9 2025 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 482, 483, 484, AND 488... Winds have decreased and critical fire weather conditions are no longer expected. $$ UTZ489-493-494-496-498-100400- /O.EXP.KSLC.FW.W.0009.000000T0000Z-250810T0300Z/ San Rafael Swell-Central Utah Mountains-Henry Mountains- Color Country Mountains-Grand Staircase- 858 PM MDT Sat Aug 9 2025 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489, 493, 494, 496, AND 498... Winds have decreased and critical fire weather conditions are no longer expected. $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Salt Lake City, UT wrote its last area forecast discussion before this red flag warning went out at Aug 2, 4:07 AM MDT, 9 hours 35 minutes earlier.
Area forecast discussion, Aug 2, 4:07 AM MDT, 9 hours 35 minutes before
Area Forecast Discussion
National Weather Service Salt Lake City UT
407 AM MDT Sat Aug 2 2025
.SYNOPSIS...A very dry and seasonably warm airmass will remain
over the area over the next several days.
&&
.SHORT TERM (THROUGH 12Z MONDAY)...A warm and dry southwesterly
flow aloft remains in place over Utah today with several weak
embedded disturbances ejecting across the area. These disturbances
will bring breezy conditions to the area this afternoon, which
will combine with the dry conditions to bring critical fire
weather conditions mainly to portions of southern and eastern
Utah. Otherwise, temperatures will remain warm, but near
climatological normals.
A few showers can be expected today, mainly across northeast Utah
and southwest Wyoming. Additionally, hi-res models are in good
agreement regarding a small cluster of thunderstorms moving from
northeast Nevada into northwest Utah during the second half of
this afternoon into this evening. Gusty outflow winds will be the
main threat, and all HREF members show at least some area of 50
mph or greater wind gusts in northwest Utah.
High pressure builds into the area tonight with the ridge axis
centered over Utah by midday tomorrow. This will result in weaker
winds and more stable conditions across the area.
.LONG TERM (After 12Z/6AM Monday)...A shortwave trough digs into the
Great Basin on Monday, resulting in strengthening southwesterly
flow aloft. H7 winds increase to around 25-30 knots on Monday,
allowing gusty southwesterly winds to develop across the region.
These gusty winds will couple with very dry conditions to create
heightened fire weather concerns on Monday, most notably across
the southern, central, and eastern portions of Utah. See the fire
weather section below for more details.
The aforementioned trough quickly lifts northeastward out of the
region on Tuesday, allowing a ridge to begin strengthening across
the southwestern US. A weak surge of mid-level moisture is expected
to ride up the western periphery of this ridge, bringing increased
chances for afternoon showers and thunderstorms across southern Utah
as early as Tuesday. Daily chances for showers and thunderstorms
continue across southern Utah through at least the end of the week
as this ridging pattern remains stagnant. Any storms that develop
during this period are expected to produce little in the way of the
precipitation as lower levels remain very dry, with the main concern
being gusty and erratic outflow winds.
&&
.AVIATION...KSLC...Generally light southeasterly winds continue this
morning before winds pick up out of the northwest between 17-18z.
Showers and thunderstorms are expected to develop across far
northwest Utah this afternoon. While storms are unlikely to move
over the KSLC terminal, outflow winds originating from these cells
are expected to produce a period of gusty northwesterly winds to 30
kts at the terminal between 00-03z.
.REST OF UTAH AND SOUTHWEST WYOMING...Winds remain generally light
and terrain driven this morning, with typical breezes developing
this afternoon. Some stronger gusts to 20-25 kts are possible this
afternoon for southern Utah terminals. Showers and thunderstorms are
expected to develop across far northwest Utah this afternoon, which
will be capable of producing gusty and erratic outflow winds at all
northern Utah and southwest Wyoming terminals through the evening
hours. Otherwise, dry conditions prevail across the remainder of the
airspace.
&&
.FIRE WEATHER...A warm and dry southwesterly flow will remain in
place today. Relative humidities are expected to rise a bit across
northern Utah today while remaining low across southern and
central Utah where afternoon minimum humidities will generally be
in the single digits. This dry airmass, combined with breezy
conditions, will result in critical fire weather conditions mainly
across south-central through east central Utah, with southwest
Utah seeing more isolated/marginal critical fire weather
conditions.
Isolated showers and thunderstorms will be possible over the
Uintas this afternoon and far northern Utah late this afternoon
into this evening. Strong, gusty outflow winds will be the main
threat, especially across far northern Utah.
High pressure will become more centered over Utah tomorrow,
resulting in weaker winds and a brief respite from the breezy
conditions. However, the high center shifts eastward on Monday,
and a return to breezy southwest winds and critical fire weather
conditions can be expected. This will likely continue through at
least Tuesday. By midweek, models try to bring some midlevel
moisture into southern and eastern Utah. Confidence remains low
for any substantial rainfall, with high-based showers and gusty
outflow winds being a more likely scenario.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Red Flag Warning from noon today to 10 PM MDT this evening for
UTZ483-484-488-489-494-498.
Red Flag Warning until 10 PM MDT this evening for UTZ493-496.
Fire Weather Watch from Monday afternoon through Monday evening
for UTZ483-484-488-489-492>498.
WY...None.
&&
Cheng/Whitlam
For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecityIn the hours before
Special weather statement, Aug 2, 1:18 PM MDT, 24 minutes before
Special Weather Statement
National Weather Service Salt Lake City UT
118 PM MDT Sat Aug 2 2025
UTZ101-021945-
Great Salt Lake Desert and Mountains UT-
118 PM MDT Sat Aug 2 2025
...A strong thunderstorm will impact portions of north central Box
Elder County through 145 PM MDT
...
At 118 PM MDT, Doppler radar was tracking a strong thunderstorm 13
miles east of Park Valley, or 23 miles southwest of Snowville, moving
east at 15 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Locomotive Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4169 11316 4182 11318 4189 11285 4166 11280
TIME...MOT...LOC 1918Z 252DEG 14KT 4177 11308
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
WebberThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 1:18 PM MDT | Special Weather Statement | SLC | Box Elder | 27 min |
| Aug 2, 4:13 PM MDT | Special Weather Statement | SLC | Tooele | 62 min |
Nearby
Red Flag Warnings in Utah, 2025Every red flag warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.