Alert archive / Utah / Red Flag Warnings in 2021

Red Flag Warning 11, NWS Salt Lake City, UT

May 23, 20215 counties in Utah

NWS Salt Lake City, UT issued this red flag warning at May 23, 2021, 2:29 PM MDT for 5 counties in Utah. It took effect at May 26, 2021, 12:00 PM MDT. It was in force for 10 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
May 23, 2021, 2:29 PM MDT (20:29 UTC)
In effect from
May 26, 2021, 12:00 PM MDT
Expired
May 26, 2021, 9:53 PM MDT
In force
10 hr
Issued by
NWS Salt Lake City, UT

Counties Garfield County, UT, Kane County, UT, San Juan County, UT, Washington County, UT, Wayne County, UT

The radar

The Cedar City radar (KICX), 120 km from the middle of the area, began a volume at 20:31 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

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 8.5 hours before the alert went out and 273 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.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2021-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2021-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -67 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2174 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
-67 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

214 
WWUS85 KSLC 232029
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
229 PM MDT Sun May 23 2021

UTZ498-241200-
/O.NEW.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
/O.CON.KSLC.FW.W.0009.000000T0000Z-210524T0300Z/
Grand Staircase-
229 PM MDT Sun May 23 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498...
...RED FLAG WARNING IN EFFECT FROM NOON TO 10 PM MDT WEDNESDAY
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 10 PM MDT Wednesday.

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...Through 9 PM MDT this evening.

* WINDS...Southwest 15 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ497-241200-
/O.NEW.KSLC.FW.W.0010.210525T2000Z-210526T0400Z/
Mojave Desert-
229 PM MDT Sun May 23 2021

...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT TUESDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 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 2 PM to 10 PM MDT Tuesday.

* AFFECTED AREA...Fire Weather Zone 497 Mojave Desert.

* TIMING...From 2 PM MDT to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts over 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor
  burning is not recommended.

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.

&&

$$

UTZ489-496-240300-
/O.CON.KSLC.FW.W.0009.000000T0000Z-210524T0300Z/
San Rafael Swell-Color Country Mountains-
229 PM MDT Sun May 23 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489 AND
496...

* AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell and 
  Fire Weather Zone 496 Color Country Mountains.

* TIMING...Through 9 PM MDT this evening.

* WINDS...Southwest 15 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
9 follow-up statements
826 
WWUS85 KSLC 232038 AAA
RFWSLC

URGENT - FIRE WEATHER MESSAGE...UPDATED
National Weather Service Salt Lake City UT
238 PM MDT Sun May 23 2021

UTZ498-241200-
/O.CON.KSLC.FW.W.0009.000000T0000Z-210524T0300Z/
/O.CON.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
Grand Staircase-
238 PM MDT Sun May 23 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 498...
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 10 PM MDT
WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONE 498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...Through 9 PM MDT this evening and also from noon to 10
  PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ489-496-240300-
/O.CON.KSLC.FW.W.0009.000000T0000Z-210524T0300Z/
San Rafael Swell-Color Country Mountains-
238 PM MDT Sun May 23 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489 AND
496...

* AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell and 
  Fire Weather Zone 496 Color Country Mountains.

* TIMING...Through 9 PM MDT this evening.

* WINDS...Southwest 15 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ497-241200-
/O.CON.KSLC.FW.W.0010.210525T2000Z-210526T0400Z/
Mojave Desert-
238 PM MDT Sun May 23 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 10 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
497...

* AFFECTED AREA...Fire Weather Zone 497 Mojave Desert.

* TIMING...From 2 PM MDT to 10 PM MDT Tuesday.

* WINDS...Southwest 15 to 20 mph with gusts over 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
671 
WWUS85 KSLC 240240
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
840 PM MDT Sun May 23 2021

UTZ498-241045-
/O.EXP.KSLC.FW.W.0009.000000T0000Z-210524T0300Z/
/O.CON.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
Grand Staircase-
840 PM MDT Sun May 23 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 10 PM MDT
WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONE 498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...From noon to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ489-496-240345-
/O.EXP.KSLC.FW.W.0009.000000T0000Z-210524T0300Z/
San Rafael Swell-Color Country Mountains-
840 PM MDT Sun May 23 2021

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 489 AND 496...

Winds and humidity will continue to improve this evening and
critical fire weather conditions are no longer expected.

$$

UTZ497-241045-
/O.CON.KSLC.FW.W.0010.210525T2000Z-210526T0400Z/
Mojave Desert-
840 PM MDT Sun May 23 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 10 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
497...

* AFFECTED AREA...Fire Weather Zone 497 Mojave Desert.

* TIMING...From 2 PM MDT to 10 PM MDT Tuesday.

* WINDS...Southwest 15 to 20 mph with gusts over 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
484 
WWUS85 KSLC 240917
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
317 AM MDT Mon May 24 2021

UTZ497-242300-
/O.CON.KSLC.FW.W.0010.210525T2000Z-210526T0400Z/
Mojave Desert-
317 AM MDT Mon May 24 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 10 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
497...

* AFFECTED AREA...Fire Weather Zone 497 Mojave Desert.

* TIMING...From 2 PM MDT to 10 PM MDT Tuesday.

* WINDS...Southwest 15 to 20 mph with gusts over 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ498-242300-
/O.CON.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
Grand Staircase-
317 AM MDT Mon May 24 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 10 PM MDT
WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONE 498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...From noon to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
215 
WWUS85 KSLC 242028
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
228 PM MDT Mon May 24 2021

UTZ497-251200-
/O.CON.KSLC.FW.W.0010.210525T2000Z-210526T0400Z/
Mojave Desert-
228 PM MDT Mon May 24 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 10 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
497...

* AFFECTED AREA...Fire Weather Zone 497 Mojave Desert.

* TIMING...From 2 PM MDT to 10 PM MDT Tuesday.

* WINDS...Southwest 15 to 20 mph with gusts over 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ498-251200-
/O.CON.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
Grand Staircase-
228 PM MDT Mon May 24 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 10 PM MDT
WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONE 498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...From noon to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
890 
WWUS85 KSLC 250939
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
339 AM MDT Tue May 25 2021

UTZ497-252300-
/O.CON.KSLC.FW.W.0010.210525T2000Z-210526T0400Z/
Mojave Desert-
339 AM MDT Tue May 25 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
10 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONE 497...

* AFFECTED AREA...Fire Weather Zone 497 Mojave Desert.

* TIMING...From 2 PM MDT to 10 PM MDT Tuesday.

* WINDS...Southwest 15 to 20 mph with gusts over 30 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ498-252300-
/O.CON.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
Grand Staircase-
339 AM MDT Tue May 25 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 10 PM MDT
WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONE 498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...From noon to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
077 
WWUS85 KSLC 252107
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
307 PM MDT Tue May 25 2021

UTZ497-260400-
/O.CON.KSLC.FW.W.0010.000000T0000Z-210526T0400Z/
Mojave Desert-
307 PM MDT Tue May 25 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
497...

* AFFECTED AREA...Fire Weather Zone 497 Mojave Desert.

* TIMING...From 2 PM MDT to 10 PM MDT Tuesday.

* WINDS...Southwest 15 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 6 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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.

&&

$$

UTZ498-261100-
/O.CON.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
Grand Staircase-
307 PM MDT Tue May 25 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 10 PM MDT
WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONE 498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...From noon to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 7 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
360 
WWUS85 KSLC 260940
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
340 AM MDT Wed May 26 2021

UTZ498-262200-
/O.CON.KSLC.FW.W.0011.210526T1800Z-210527T0400Z/
Grand Staircase-
340 AM MDT Wed May 26 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 10 PM
MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONE 498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...From noon to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts to around 30 mph.

* RELATIVE HUMIDITY...As low as 7 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
240 
WWUS85 KSLC 262016
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
216 PM MDT Wed May 26 2021

UTZ498-270400-
/O.CON.KSLC.FW.W.0011.000000T0000Z-210527T0400Z/
Grand Staircase-
216 PM MDT Wed May 26 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
498...

* AFFECTED AREA...Fire Weather Zone 498 Grand Staircase.

* TIMING...From noon to 10 PM MDT Wednesday.

* WINDS...Southwest 15 to 20 mph with gusts to around 30 mph.

* RELATIVE HUMIDITY...As low as 7 percent.

* IMPACTS...Any fires that develop could spread rapidly. Outdoor 
  burning is not recommended.

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
077 
WWUS85 KSLC 270353
RFWSLC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
953 PM MDT Wed May 26 2021

UTZ498-270500-
/O.CAN.KSLC.FW.W.0011.000000T0000Z-210527T0400Z/
Grand Staircase-
953 PM MDT Wed May 26 2021

...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONE 498...

The National Weather Service in Salt Lake City has cancelled the
Red Flag Warning.

Critical fire weather conditions have ended across the area as
winds have diminished, thus the Red Flag Warning is cancelled.

$$

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.

IssuedProductOfficeCountiesLasted
May 23, 2:29 PM MDTRed Flag WarningSLCWashington56 hr
May 23, 4:52 PM MDTSpecial Weather StatementSLCWeber38 min
May 23, 5:04 PM MDTSpecial Weather StatementSLCUtah56 min

Nearby

Red Flag Warnings in Utah, 2021Every red flag warning in 2021

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.