Alert archive / Utah / Red Flag Warnings in 2022
Red Flag Warning 13, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this red flag warning at Jul 7, 2022, 12:47 PM MDT for 17 counties in Utah. It took effect at Jul 8, 2022, 12:00 PM MDT. It was in force for 33 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 7, 2022, 12:47 PM MDT (18:47 UTC)
- In effect from
- Jul 8, 2022, 12:00 PM MDT
- Expired
- Jul 9, 2022, 9:00 PM MDT
- In force
- 33 hr
- Issued by
- NWS Salt Lake City, UT
Counties Beaver County, UT, Box Elder County, UT, Cache County, UT, Davis County, UT, Iron County, UT, Juab County, UT, Millard County, UT, Morgan County, UT, Rich County, UT, Salt Lake County, UT, Sanpete County, UT, Summit County, UT, Tooele County, UT, Utah County, UT, Wasatch County, UT, Washington County, UT, Weber County, UT
The radar
The Salt Lake City radar (KMTX), 127 km from the middle of the area, began a volume at 18:48 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, 6.8 hours before the alert went out and 77 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
- 12 J/kg
- Mixed-layer CIN
- -280 J/kg
- Mixed-layer LCL
- 3489 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
064 WWUS85 KSLC 071847 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 1247 PM MDT Thu Jul 7 2022 UTZ478-492-495-081200- /O.NEW.KSLC.FW.W.0013.220708T1800Z-220710T0300Z/ Salt Lake Desert-Central Utah West Desert- Color Country West Desert- 1247 PM MDT Thu Jul 7 2022 ...RED FLAG WARNING IN EFFECT FROM NOON FRIDAY TO 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478, 492, AND 495... 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 Friday to 9 PM MDT Saturday. * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, Fire Weather Zone 492 Central Utah West Desert and Fire Weather Zone 495 Color Country West Desert. * WINDS...South to southwest winds of 10 to 20 mph with gusts around 35 mph. * RELATIVE HUMIDITY...As low as 5 percent along with poor overnight recovery, with maximum humidity over western valleys Saturday morning of 15 to 25 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. && $$ For more information from NOAA/National Weather Service visit... http://weather.gov/saltlakecity
5 follow-up statements
614 WWUS85 KSLC 080824 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 224 AM MDT Fri Jul 8 2022 UTZ478-492-495-082100- /O.CON.KSLC.FW.W.0013.220708T1800Z-220710T0300Z/ Salt Lake Desert-Central Utah West Desert- Color Country West Desert- 224 AM MDT Fri Jul 8 2022 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478, 492, AND 495... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, Fire Weather Zone 492 Central Utah West Desert and Fire Weather Zone 495 Color Country West Desert. * WINDS...South 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 7 percent today and Saturday with poor overnight recovery. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from NOAA/National Weather Service visit... http://weather.gov/saltlakecity
025 WWUS85 KSLC 081904 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 104 PM MDT Fri Jul 8 2022 UTZ478-492-495-091200- /O.CON.KSLC.FW.W.0013.000000T0000Z-220710T0300Z/ Salt Lake Desert-Central Utah West Desert- Color Country West Desert- 104 PM MDT Fri Jul 8 2022 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478, 492, AND 495... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, Fire Weather Zone 492 Central Utah West Desert and Fire Weather Zone 495 Color Country West Desert. * WINDS...South southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 percent today and Saturday with poor overnight recovery. * 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. && $$ For more information from NOAA/National Weather Service visit... http://weather.gov/saltlakecity
978 WWUS85 KSLC 090901 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 301 AM MDT Sat Jul 9 2022 UTZ478-492-495-092330- /O.CON.KSLC.FW.W.0013.000000T0000Z-220710T0300Z/ Salt Lake Desert-Central Utah West Desert- Color Country West Desert- 301 AM MDT Sat Jul 9 2022 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478, 492, AND 495... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, Fire Weather Zone 492 Central Utah West Desert and Fire Weather Zone 495 Color Country West Desert. * WINDS...South to southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from NOAA/National Weather Service visit... http://weather.gov/saltlakecity
614 WWUS85 KSLC 091728 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 1128 AM MDT Sat Jul 9 2022 UTZ479-100130- /O.EXA.KSLC.FW.W.0013.000000T0000Z-220710T0300Z/ Wasatch Mountains- 1128 AM MDT Sat Jul 9 2022 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 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 until 9 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 479 Wasatch Mountains. * WINDS...Southwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 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. && $$ UTZ478-492-495-100130- /O.CON.KSLC.FW.W.0013.000000T0000Z-220710T0300Z/ Salt Lake Desert-Central Utah West Desert- Color Country West Desert- 1128 AM MDT Sat Jul 9 2022 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478, 492, AND 495... * AFFECTED AREA...Fire Weather Zone 478 Salt Lake Desert, Fire Weather Zone 492 Central Utah West Desert and Fire Weather Zone 495 Color Country West Desert. * WINDS...South to southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Critical fire weather conditions are likely to occur. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ For more information from NOAA/National Weather Service visit... http://weather.gov/saltlakecity
841 WWUS85 KSLC 100259 RFWSLC URGENT - FIRE WEATHER MESSAGE National Weather Service Salt Lake City UT 859 PM MDT Sat Jul 9 2022 UTZ478-492-495-100400- /O.EXP.KSLC.FW.W.0013.000000T0000Z-220710T0300Z/ Salt Lake Desert-Central Utah West Desert- Color Country West Desert- 859 PM MDT Sat Jul 9 2022 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 478, 492, AND 495... Winds will continue to drop off with the loss of daytime heating, therefore the Red Flag Warning will be allowed to expire. Although humidity will rise above 15 percent, Overnight recovery will remain poor, with values remaining in the 20 percent range across most locations. $$ UTZ479-100400- /O.EXP.KSLC.FW.W.0013.000000T0000Z-220710T0300Z/ Wasatch Mountains- 859 PM MDT Sat Jul 9 2022 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 479 BELOW 7000 FEET... Winds will continue to drop off with the loss of daytime heating, therefore the Red Flag Warning will be allowed to expire. Westerly winds will once again develop Sunday afternoon once again elevating fire weather conditions. $$ For more information from NOAA/National Weather Service visit... http://weather.gov/saltlakecity
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 6:07 PM MDT | Special Weather Statement | SLC | Emery | 38 min |
Nearby
Red Flag Warnings in Utah, 2022Every red flag warning in 2022
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.