Alert archive / Wyoming / Red Flag Warnings in 2021

Red Flag Warning 37, NWS Cheyenne, WY

September 24, 2021

NWS Cheyenne, WY issued this red flag warning at Sep 24, 2021, 1:18 PM MDT. It took effect at Sep 25, 2021, 11:00 AM MDT. It was in force for 9 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: Sep 24, 2021, 1:18 PM MDT (19:18 UTC)
In effect from: Sep 25, 2021, 11:00 AM MDT
Expired: Sep 25, 2021, 8:00 PM MDT
In force: 9 hr
Issued by: NWS Cheyenne, WY

The text

As transmitted.

869 
WWUS85 KCYS 241918
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
118 PM MDT Fri Sep 24 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303, 304, 
306, AND 308...

WYZ303-304-306-308-260200-
/O.UPG.KCYS.FW.A.0035.210925T1700Z-210926T0200Z/
/O.NEW.KCYS.FW.W.0037.210925T1700Z-210926T0200Z/
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Upper North Platte River Basin-
Laramie Valley/Shirley Basin-
118 PM MDT Fri Sep 24 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303, 304, 
306, AND 308...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM MDT Saturday.

* WIND...West to southwest 15 to 20 MPH with gusts to 35 MPH 
  possible. 

* HUMIDITY...12 to 15 percent.

* HAINES...4 to 5.

* IMPACTS...Any fires that develop will likely 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 will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

3 follow-up statements

302 
WWUS85 KCYS 250806
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
206 AM MDT Sat Sep 25 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301...302...303
...304...305...306...307 AND 308...

...FIRE WEATHER WATCH FOR SUNDAY FOR FWZ 301 THROUGH 308...310 AND
SOUTHERN 313...

WYZ301-302-305-307-260000-
/O.NEW.KCYS.FW.A.0036.210926T1700Z-210927T0200Z/
/O.EXA.KCYS.FW.W.0037.210925T1700Z-210926T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF-
206 AM MDT Sat Sep 25 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER 
ZONES 301...302...305 AND 307... 

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH 
SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER 
ZONES 301...302...305 AND 307...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM this morning to 8 PM MDT
this evening. a Fire Weather Watch has also been issued. This
Fire Weather Watch is in effect from Sunday morning through
Sunday evening. 

* WIND...West to southwest 15 to 20 MPH with gusts to 35 MPH 
  possible. Similar wind gusts are expected Sunday

* HUMIDITY...12 to 15 percent. Similar afternoon humidity expected
  Sunday.

* HAINES...4 to 5.

* IMPACTS...Any fires that develop will likely 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 will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

WYZ303-304-306-308-260000-
/O.NEW.KCYS.FW.A.0036.210926T1700Z-210927T0200Z/
/O.CON.KCYS.FW.W.0037.210925T1700Z-210926T0200Z/
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Upper North Platte River Basin-
Laramie Valley/Shirley Basin-
206 AM MDT Sat Sep 25 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 303...304...306 AND 308... 

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH 
SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER 
ZONES 303...304...306 AND 308...

The National Weather Service in Cheyenne has issued a Fire
Weather Watch, which is in effect from Sunday morning through
Sunday evening. 

* WIND...West to southwest 15 to 20 MPH with gusts to 35 MPH 
  possible. Similar wind gusts are expected Sunday.

* HUMIDITY...12 to 15 percent. Similar afternoon humidity expected
  Sunday.

* HAINES...4 to 5.

* IMPACTS...Any fires that develop will likely 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 will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

NEZ313-WYZ310-260000-
/O.NEW.KCYS.FW.A.0036.210926T1700Z-210927T0200Z/
Scotts Bluff National Monument/Wildcat Hills-
Platte/Goshen/Central and Eastern Laramie-
206 AM MDT Sat Sep 25 2021

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER 
ZONES 310 AND 313...

The National Weather Service in Cheyenne has issued a Fire
Weather Watch, which is in effect from Sunday morning through
Sunday evening. 

* AFFECTED AREA...Fire weather zone 313.Fire weather zone 310.

* WIND...West to southwest 15 to 20 MPH with gusts to 35 MPH
  possible. 

* HUMIDITY...12 to 15 percent. 

* HAINES...4 to 5.

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

* IMPACTS...any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

992 
WWUS85 KCYS 251921
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
121 PM MDT Sat Sep 25 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301...302...
303 ...304...305...306...307 AND 308...

...FIRE WEATHER WATCH FOR SUNDAY FOR FWZ 301 THROUGH 308...
310 AND SOUTHERN 313...

WYZ301>308-261200-
/O.CON.KCYS.FW.W.0037.000000T0000Z-210926T0200Z/
/O.CON.KCYS.FW.A.0036.210926T1700Z-210927T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
121 PM MDT Sat Sep 25 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302,
303, 304, 305, 306, 307, AND 308... 
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING 
THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 301, 302, 303, 304, 305, 306, 307, AND 308...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM this morning to 8 PM MDT
this evening. a Fire Weather Watch has also been issued. This
Fire Weather Watch is in effect from Sunday morning through
Sunday evening.

* WIND...West to southwest 15 to 20 MPH with gusts to 35 MPH
  possible Saturday. Wind gusts 25 to 30 MPH possible Sunday.

* HUMIDITY...12 to 15 percent.

* HAINES...4 to 5.

* IMPACTS...Any fires that develop will likely 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 will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

NEZ313-WYZ310-261200-
/O.CON.KCYS.FW.A.0036.210926T1700Z-210927T0200Z/
Scotts Bluff National Monument/Wildcat Hills-
Platte/Goshen/Central and Eastern Laramie-
121 PM MDT Sat Sep 25 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 310 AND 313...

* AFFECTED AREA...Fire weather zone 313.Fire weather zone 310.

* WIND...West to southwest 15 to 20 MPH with gusts to 25 to 30 
  MPH possible.

* HUMIDITY...12 to 15 percent.

* HAINES...4 to 5.

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

* IMPACTS...any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

247 
WWUS85 KCYS 260148
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
748 PM MDT Sat Sep 25 2021

...FIRE WEATHER WATCH FOR SUNDAY FOR FWZ 301 THROUGH 308...
310 AND SOUTHERN 313...

WYZ301>308-261200-
/O.EXP.KCYS.FW.W.0037.000000T0000Z-210926T0200Z/
/O.CON.KCYS.FW.A.0036.210926T1700Z-210927T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
748 PM MDT Sat Sep 25 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 301, 302, 303, 304, 305, 306, 307, AND 308... ...RED
FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FIRE WEATHER 
ZONES 301, 302, 303, 304, 305, 306, 307, AND 308...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

NEZ313-WYZ310-261200-
/O.CON.KCYS.FW.A.0036.210926T1700Z-210927T0200Z/
Scotts Bluff National Monument/Wildcat Hills-
Platte/Goshen/Central and Eastern Laramie-
748 PM MDT Sat Sep 25 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 310 AND 313...

* AFFECTED AREA...Fire weather zone 313.Fire weather zone 310.

* WIND...West to southwest 15 to 20 MPH with gusts to 25 to 30 
  MPH possible.

* HUMIDITY...12 to 15 percent.

* HAINES...4 to 5.

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

* IMPACTS...any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

JTL

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 24, 2:19 AM MDT	Fire Weather Watch	CYS		11 hr

Nearby

Red Flag Warnings in Wyoming, 2021 Every 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.