Alert archive / Utah / Red Flag Warnings in 2024
Red Flag Warning 3, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Jun 29, 2024, 2:44 PM MDT for 15 counties in Utah. It took effect at Jun 30, 2024, 12:00 PM MDT. It was in force for 33 hr. 6 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 29, 2024, 2:44 PM MDT (20:44 UTC)
- In effect from
- Jun 30, 2024, 12:00 PM MDT
- Expired
- Jul 1, 2024, 9:00 PM MDT
- In force
- 33 hr
- Issued by
- NWS Salt Lake City, UT
Counties Beaver County, UT, Box Elder County, UT, Davis County, UT, Garfield County, UT, Iron County, UT, Juab County, UT, Kane County, UT, Millard County, UT, Salt Lake County, UT, San Juan County, UT, Sanpete County, UT, Tooele County, UT, Utah County, UT, Washington County, UT, Wayne County, UT
The radar
The Cedar City radar (KICX), 177 km from the middle of the area, began a volume at 20:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 30, 12:00 PM MDT | NON-TSTM WND GST 62 | 4 Nne Lake Pt, UT | Mesonet station UT201 SR-201 at I-80. |
| Jun 30, 12:15 PM MDT | NON-TSTM WND GST 58 | 6 Ne Lake Pt, UT | Mesonet station KCC02 Marina. |
| Jun 30, 12:30 PM MDT | NON-TSTM WND GST 60 | 3 S Faust, UT | Mesonet station VRH Vernon Hill. |
| Jun 30, 1:40 PM MDT | NON-TSTM WND GST 64 | 5 N Cove Fort, UT | UDOT I-15 at MP 139 Dog Valley Creek Mesonet Station. |
| Jun 30, 1:40 PM MDT | NON-TSTM WND GST 66 | 1 Wnw Alta, UT | Mesonet station IFF Cardiff Peak. |
| Jun 30, 2:10 PM MDT | NON-TSTM WND GST 66 | Dog Valley, UT | UDOT Dog Valley Mesonet Station. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 8.7 hours before the alert went out and 189 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
- 2953 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
877 WWUS85 KSLC 292044 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 244 PM MDT Sat Jun 29 2024 UTZ492-301215- /O.UPG.KSLC.FW.A.0003.240630T1800Z-240701T0300Z/ /O.NEW.KSLC.FW.W.0003.240630T1800Z-240702T0300Z/ Central Utah West Desert- 244 PM MDT Sat Jun 29 2024 ...RED FLAG WARNING IN EFFECT FROM NOON SUNDAY TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 492... 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 Sunday to 9 PM MDT Monday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 to 10 percent both Sunday and Monday afternoons. RH Recovery near 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ495-497-301215- /O.UPG.KSLC.FW.A.0003.240630T1800Z-240702T0300Z/ /O.NEW.KSLC.FW.W.0003.240630T1800Z-240702T0300Z/ Color Country West Desert-Mojave Desert- 244 PM MDT Sat Jun 29 2024 ...RED FLAG WARNING IN EFFECT FROM NOON SUNDAY TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 495 AND 497... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon Sunday to 9 PM MDT Monday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph each afternoon and early evening. * RELATIVE HUMIDITY...As low as 9 to 15 percent both Sunday and Monday afternoons. RH Recovery of 30 to 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ496-301215- /O.NEW.KSLC.FW.W.0003.240630T1800Z-240702T0300Z/ Color Country Mountains- 244 PM MDT Sat Jun 29 2024 ...RED FLAG WARNING IN EFFECT FROM NOON SUNDAY TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 496 BELOW 7000 FEET... The National Weather Service in Salt Lake City has issued a Red Flag Warning below 7000 feet for wind and low relative humidity, which is in effect from noon Sunday to 9 PM MDT Monday. * AFFECTED AREA...Fire Weather Zone 496 Color Country Mountains below 7000 feet. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph each afternoon and early evening. * RELATIVE HUMIDITY...As low as 9 to 15 percent both Sunday and Monday afternoons. RH Recovery of 30 to 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ498-301215- /O.EXT.KSLC.FW.A.0003.240701T1800Z-240702T0300Z/ Grand Staircase- 244 PM MDT Sat Jun 29 2024 ...FIRE WEATHER WATCH NOW IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph each Monday afternoon and evening. * RELATIVE HUMIDITY...As low as 12 to 15 percent Monday afternoon. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
7 follow-up statements
683 WWUS85 KSLC 300807 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 207 AM MDT Sun Jun 30 2024 UTZ492-495-497-302200- /O.CON.KSLC.FW.W.0003.240630T1800Z-240702T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 207 AM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT MONDAY 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 35 mph. * RELATIVE HUMIDITY...As low as 6 to 10 percent both Sunday and Monday afternoons. RH recovery near 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ496-302200- /O.CON.KSLC.FW.W.0003.240630T1800Z-240702T0300Z/ Color Country Mountains- 207 AM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 496 BELOW 7000 FEET... * AFFECTED AREA...Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph each afternoon and early evening. * RELATIVE HUMIDITY...As low as 9 to 15 percent both Sunday and Monday afternoons. RH recovery of 30 to 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ498-302200- /O.CON.KSLC.FW.A.0003.240701T1800Z-240702T0300Z/ Grand Staircase- 207 AM MDT Sun Jun 30 2024 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph Monday afternoon and evening. * RELATIVE HUMIDITY...As low as 12 to 15 percent Monday afternoon. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
901 WWUS85 KSLC 301859 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 1259 PM MDT Sun Jun 30 2024 UTZ478-010300- /O.EXB.KSLC.FW.W.0003.000000T0000Z-240701T0300Z/ Salt Lake Desert- 1259 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 478... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 9 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert. * WINDS...South 15 to 25 mph with gusts up to 40 mph this afternoon and early evening. * RELATIVE HUMIDITY...As low as 5 to 10 percent. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS.. A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ492-495-497-010300- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 1259 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY 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 35 mph. * RELATIVE HUMIDITY...As low as 6 to 10 percent both Sunday and Monday afternoons. RH recovery near 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ496-010300- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Color Country Mountains- 1259 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 496 BELOW 7000 FEET... * AFFECTED AREA...Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph each afternoon and early evening. * RELATIVE HUMIDITY...As low as 9 to 15 percent both Sunday and Monday afternoons. RH recovery of 30 to 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ498-010300- /O.CON.KSLC.FW.A.0003.240701T1800Z-240702T0300Z/ Grand Staircase- 1259 PM MDT Sun Jun 30 2024 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph Monday afternoon and evening. * RELATIVE HUMIDITY...As low as 12 to 15 percent Monday afternoon. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
746 WWUS85 KSLC 302012 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 212 PM MDT Sun Jun 30 2024 UTZ498-010415- /O.UPG.KSLC.FW.A.0003.240701T1800Z-240702T0300Z/ /O.EXB.KSLC.FW.W.0003.240701T1800Z-240702T0300Z/ Grand Staircase- 212 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 9 PM MDT Monday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph Monday afternoon and evening. * RELATIVE HUMIDITY...As low as 12 to 15 percent Monday afternoon. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ478-010300- /O.CON.KSLC.FW.W.0003.000000T0000Z-240701T0300Z/ Salt Lake Desert- 212 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 478... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert. * WINDS...South 15 to 25 mph with gusts up to 40 mph this afternoon and early evening. * RELATIVE HUMIDITY...As low as 5 to 10 percent. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ492-495-497-010415- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 212 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 to 10 percent both Sunday and Monday afternoons. RH recovery near 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ496-010415- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Color Country Mountains- 212 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 496 BELOW 7000 FEET... * AFFECTED AREA...Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph each afternoon and early evening. * RELATIVE HUMIDITY...As low as 9 to 15 percent both Sunday and Monday afternoons. RH recovery of 30 to 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
637 WWUS85 KSLC 010312 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 912 PM MDT Sun Jun 30 2024 UTZ478-010415- /O.EXP.KSLC.FW.W.0003.000000T0000Z-240701T0300Z/ Salt Lake Desert- 912 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 478... $$ UTZ492-495-497-011300- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 912 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY 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 35 mph. * RELATIVE HUMIDITY...As low as 6 to 10 percent both Sunday and Monday afternoons. RH recovery near 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ498-011300- /O.CON.KSLC.FW.W.0003.240701T1800Z-240702T0300Z/ Grand Staircase- 912 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph Monday afternoon and evening. * RELATIVE HUMIDITY...As low as 12 to 15 percent Monday afternoon. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ496-011300- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Color Country Mountains- 912 PM MDT Sun Jun 30 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 496 BELOW 7000 FEET... * AFFECTED AREA...Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 25 mph with gusts up to 35 mph each afternoon and early evening. * RELATIVE HUMIDITY...As low as 9 to 15 percent both Sunday and Monday afternoons. RH recovery of 30 to 40 percent is expected Sunday night into Monday morning. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
987 WWUS85 KSLC 010822 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 222 AM MDT Mon Jul 1 2024 UTZ492-495-497-012330- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 222 AM MDT Mon Jul 1 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...West-southwest 10 to 15 mph with gusts to around 30 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ498-012330- /O.CON.KSLC.FW.W.0003.240701T1800Z-240702T0300Z/ Grand Staircase- 222 AM MDT Mon Jul 1 2024 ...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 498... * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ496-012330- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Color Country Mountains- 222 AM MDT Mon Jul 1 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 496 BELOW 7000 FEET... * AFFECTED AREA...Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
867 WWUS85 KSLC 012028 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 228 PM MDT Mon Jul 1 2024 UTZ498-020430- /O.NEW.KSLC.FW.A.0004.240703T1800Z-240704T0300Z/ /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Grand Staircase- 228 PM MDT Mon Jul 1 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... The National Weather Service in Salt Lake City has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Wednesday afternoon through Wednesday evening. A Red Flag Warning remains in effect until 9PM this evening for high winds and low relative humidities. * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph through this evening. For Wednesday, west-northwest winds 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 14 percent through this evening. For Wednesday minimum humidities less than 10% are expected. * IMPACTS...Critical fire weather conditions are likely to occur. 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. A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings. && $$ UTZ492-495-497-020300- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Central Utah West Desert-Color Country West Desert-Mojave Desert- 228 PM MDT Mon Jul 1 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... * AFFECTED AREA...Fire Weather Zone 492 Central Utah West Desert, Fire Weather Zone 495 Color Country West Desert and Fire Weather Zone 497 Mojave Desert. * WINDS...West-southwest 10 to 15 mph with gusts to around 30 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ UTZ496-020300- /O.CON.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Color Country Mountains- 228 PM MDT Mon Jul 1 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 496 BELOW 7000 FEET... * AFFECTED AREA...Fire Weather Zone 496 Color Country Mountains. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Critical fire weather conditions are likely to occur. 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. && $$ UTZ489-020430- /O.NEW.KSLC.FW.A.0004.240703T1800Z-240704T0300Z/ San Rafael Swell- 228 PM MDT Mon Jul 1 2024 ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 489 BELOW 6500 FEET... The National Weather Service in Salt Lake City has issued a Fire Weather Watch below 6500 feet for wind and low relative humidity, which is in effect from Wednesday afternoon through Wednesday evening. * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell. * WINDS...Northwest winds 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Around 7-10% * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings. && $$ For more information from the National Weather Service visit http://weather.gov/saltlakecity
756 WWUS85 KSLC 020317 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 917 PM MDT Mon Jul 1 2024 UTZ498-030000- /O.EXP.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ /O.CON.KSLC.FW.A.0004.240703T1800Z-240704T0300Z/ Grand Staircase- 917 PM MDT Mon Jul 1 2024 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498... * AFFECTED AREA...Fire Weather Zone 498 Grand Staircase. * WINDS...On Wednesday, west-northwest winds 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Wednesday minimum humidities less than 10% are expected. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings. && $$ UTZ492-495>497-020430- /O.EXP.KSLC.FW.W.0003.000000T0000Z-240702T0300Z/ Central Utah West Desert-Color Country West Desert- Color Country Mountains-Mojave Desert- 917 PM MDT Mon Jul 1 2024 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 492, 495, AND 497... $$ UTZ489-030000- /O.CON.KSLC.FW.A.0004.240703T1800Z-240704T0300Z/ San Rafael Swell- 917 PM MDT Mon Jul 1 2024 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 489 BELOW 6500 FEET... * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell. * WINDS...Northwest winds 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...7 to 10%. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings. && $$ 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 Jun 29, 3:14 AM MDT, 11 hours 30 minutes earlier.
Area forecast discussion, Jun 29, 3:14 AM MDT, 11 hours 30 minutes before
Area Forecast Discussion
National Weather Service Salt Lake City UT
314 AM MDT Sat Jun 29 2024
.SYNOPSIS...High pressure will bring the return of hot and dry
conditions over the weekend. Increasing winds will bring the
potential for critical fire weather conditions into Monday.
Moisture and instability may return to the area early next week.
&&
.SHORT TERM (Through 12Z/6AM Monday)...High pressure has moved
over Utah and southwest Wyoming this morning, resulting in mostly
clear skies. Some smoke from California wildfires was moving over
northern Utah this morning, but seems to be elevated enough not to
cause visibility restrictions. The ridge axis is expected to track
east to near the Utah/Colorado border by the afternoon, switching
the flow aloft to a more southerly direction that will move any
smoke away from the area. The change in the flow aloft will also
allow isolated canyon winds along the Wasatch Front to weaken.
Thus far, wind gusts near canyon mouths are in the 20-30 kt range
with the exception of Weber Canyon, where gusts are much higher,
over 70 mph at times. Given the very isolated nature of these
winds and the expectation they will weaken around sunrise, have
not issued a headline at this time.
Under the influence of the ridge, temperatures will warm
noticeably today, particularly over northern Utah and southwest
Wyoming. Those locations will see maxes up to 10F hotter than what
was observed yesterday and around 10F above seasonal normals.
Despite temperatures approaching the century mark for several
locations along the Wasatch Front, HeatRisk values remain in the
orange range given much better overnight recoveries compared to
the last period of hot temperatures and thus have not issued any
headlines. Over southern Utah, warming will be much more subtle.
As the ridge shifts east today, southerly winds over western Utah
will increase, becoming breezy at times. Combined with the dry
conditions, winds will be enough to result in isolated critical
fire weather conditions. However, have opted against headlines for
today given that in looking at NBM and SREF guidance, probabilities
of a prolonged period of wind gusts in excess of 30 mph look low,
and thus not widespread enough to warrant a Red Flag Warning. With
a trough entering the Great Basin tomorrow, winds will increase
further as the airmass continues to dry, resulting in the
potential for more widespread critical fire weather conditions. A
Fire Weather Watch remains in effect for much of southern and
western Utah where fuels are critically dry.
.LONG TERM (After 12Z/6AM Monday)...A bit of a cooldown is our
weather headline for the first of July, which is not the headline
you would anticipate. This cooldown won't impact all of our area,
but the northern 2/3rds of Utah will feel the impacts. The set up
here is a fairly broad and far reaching trough of low pressure
across the western US, tracking very slowly eastward through mid-
week. There isn't a forecast model that doesn't support this
solution so there is quite good confidence in these cooler
conditions.
The trough moves so slow in fact that conditions Monday compared to
Tuesday are quite similar, or even cooler. Conditions are mainly
expected to be dry across the region, in all areas except far
southeastern Utah where some moisture may reside. A slight risk for
showers and thunderstorms will exist in areas like Lake Powell/Glen
Canyon where lift is supportive ahead of the trough.
If forecast confidence wavers any, it will be in the mid-week time
frame when the low exits and strong high pressure begins to build in
from the west. The transition period timing does differ between
forecast models with the GFS bringing in the high by Wednesday while
the ECMWF waits until later in the week.
Friday and into the weekend, temperatures become a tough forecast.
Consensus is for high pressure to be parked somewhere over the
western US. However, it will make a difference which areas feels the
heat the most based on where it does situate itself. Essentially,
there's a 50/50 split amongst ensemble models favoring hotter
temperatures or favoring cooler temperatures in our area. The
hotter temperatures would arrive under high pressure centered
directly over our area, favored mostly by the GFS, whereas favored
cooler temperatures are noted by northwest flow associated with
an area of low pressure to our north. The range for possible
temperatures outcomes widens Friday and Saturday, which is no
surprise looking at this uncertainty.
&&
.AVIATION...KSLC...Smoke or haze from wildfires from the west
will have the potential to reduce visibilities at the terminal today
with otherwise VFR conditions expected. A light southerly wind is
forecast through much of the morning hours with potential for
briefly breezy southerly winds late morning. A northwest wind shift
is expected early to mid afternoon. Overnight, look for gusty
southerly winds with gusts at or exceeding 20 knots.
.REST OF UTAH AND SOUTHWEST WYOMING...Across much of Utah
today, smoke or haze from wildfires from the west may reduce
visibilities at area terminals. Early this morning, easterly winds
are forecast for LGU and OGD bringing some gusty conditions.
Conditions are expected to shift more southwesterly by early this
afternoon. Elsewhere, diurnal wind shifts are forecast today. VFR
conditions are forecast except where isolated showers and
thunderstorms are possible across eastern Utah this afternoon.
Visibility may drop as a result in heavy rain.
&&
.FIRE WEATHER...High pressure has moved over Utah this morning and
conditions have dried substantially. Western portions of the area
will be under an occasionally breezy southwest flow this
afternoon, which will combine with the low relative humidities to
produce isolated critical fire weather conditions. The airmass
will continue to dry Sunday as winds increase areawide with a
trough moving into the Great Basin. Thus, critical fire weather
conditions are expected to be more widespread and a Fire Weather
Watch is in effect for large portions of western and southern
Utah. With the passage of the trough moisture is expected to
increase over eastern Utah with winds decreasing overall. Still,
some threat remains for critical fire weather conditions over
parts of southern Utah.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Fire Weather Watch from Sunday afternoon through Sunday evening
for UTZ492.
Fire Weather Watch from Sunday afternoon through Monday evening
for UTZ495-497-498.
WY...None.
&&
SHORT TERM/FIRE WEATHER...Traphagan
LONG TERM/AVIATION...NDeSmet
For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecityThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 6:25 AM MDT | High Wind Warning | SLC | Davis, Weber | 13 min |
Nearby
Red Flag Warnings in Utah, 2024Every red flag warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.