Alert archive / Wyoming / Red Flag Warnings in 2021

Red Flag Warning 12, NWS Cheyenne, WY

July 7, 2021

NWS Cheyenne, WY issued this red flag warning at Jul 7, 2021, 3:07 AM MDT. It took effect at Jul 8, 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
Jul 7, 2021, 3:07 AM MDT (09:07 UTC)
In effect from
Jul 8, 2021, 11:00 AM MDT
Expired
Jul 8, 2021, 8:00 PM MDT
In force
9 hr
Issued by
NWS Cheyenne, WY

The text

As transmitted.

790 
WWUS85 KCYS 070907
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
307 AM MDT Wed Jul 7 2021

...RED FLAG WARNING FOR THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY
FWZ 301...302...305...307...308 AND 309...

WYZ301-302-305-307>309-071715-
/O.UPG.KCYS.FW.A.0009.210708T1600Z-210709T0200Z/
/O.NEW.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
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-
Laramie Valley/Shirley Basin-South Laramie Range/Medicine Bow NF-
307 AM MDT Wed Jul 7 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT THURSDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, 
305, 307, 308, AND 309...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM MDT Thursday. The
Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Fire weather zones 301...302...305...307... 
  308 and 309. 

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 35 mph.

* HUMIDITY...10 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$
5 follow-up statements
290 
WWUS85 KCYS 071938
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
138 PM MDT Wed Jul 7 2021

...RED FLAG WARNING FOR THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY
FWZ 301...302...305...307...308 AND 309...

...FIRE WEATHER WATCH FOR FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY
FWZ 305...307... AND 308...

WYZ305-307-308-081200-
/O.NEW.KCYS.FW.A.0010.210709T1700Z-210710T0200Z/
/O.CON.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
138 PM MDT Wed Jul 7 2021
 
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH 
FRIDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER 
ZONES 305, 307, AND 308...

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

* AFFECTED AREA...Fire weather zones 305...307...and 308.
 
* WIND...West to southwest winds of 20 to 25 mph sustained with
  gusts to 36 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$

WYZ301-302-309-081200-
/O.CON.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
South Laramie Range/Medicine Bow NF-
138 PM MDT Wed Jul 7 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 
301, 302, 305, 307, 308, AND 309...

* AFFECTED AREA...Fire weather zones 301...302...305...307... 
  308 and 309. 

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 35 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$
022 
WWUS85 KCYS 080008
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
608 PM MDT Wed Jul 7 2021

...RED FLAG WARNING FOR THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY
FWZ 301...302...304...305...307...308 AND 309...

...FIRE WEATHER WATCH FOR FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY
FWZ 304...305...307... AND 308...

WYZ304-081215-
/O.EXA.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
Southwest Carbon County-
608 PM MDT Wed Jul 7 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT THURSDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 305, 307, AND
308...

...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH 
FRIDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER 
ZONES 304...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM MDT Thursday. Fire
Weather Watch is in effect for gusty winds and low humidity
Friday.

* AFFECTED AREA...Fire weather zones 304.

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 36 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$

WYZ305-307-308-081215-
/O.CON.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
/O.CON.KCYS.FW.A.0010.210709T1700Z-210710T0200Z/
Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
608 PM MDT Wed Jul 7 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
305, 307, AND 308...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE
WEATHER ZONES 305, 307, AND 308...

* AFFECTED AREA...Fire weather zones 305...307...and 308.

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 36 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$

WYZ301-302-309-081215-
/O.CON.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
South Laramie Range/Medicine Bow NF-
608 PM MDT Wed Jul 7 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
301, 302, 305, 307, 308, AND 309...

* AFFECTED AREA...Fire weather zones 301...302 and 309. 

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 35 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$
498 
WWUS85 KCYS 080840
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
240 AM MDT Thu Jul 8 2021

...RED FLAG WARNING FOR THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY
FWZ 301...302...304...305...307...308 AND 309...

...RED FLAG WARNING FOR FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY 
FWZ 304...305...307... AND 308...

WYZ305-307-308-090000-
/O.UPG.KCYS.FW.A.0010.210709T1700Z-210710T0200Z/
/O.NEW.KCYS.FW.W.0013.210709T1700Z-210710T0200Z/
/O.CON.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
240 AM MDT Thu Jul 8 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 301, 302, 305, 307, AND 308... 
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT FRIDAY FOR 
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 305, 307, 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 Friday. The
Fire Weather Watch is no longer in effect. 


* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 36 mph. 

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$

WYZ304-090000-
/O.NEW.KCYS.FW.W.0013.210709T1700Z-210710T0200Z/
/O.CON.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
Southwest Carbon County-
240 AM MDT Thu Jul 8 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 ZONE 304... 
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT FRIDAY FOR 
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 304...

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

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM MDT Thursday. Fire
Weather Watch is in effect for gusty winds and low humidity
Friday.

* AFFECTED AREA...Fire weather zones 304.

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 36 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$

WYZ301-302-309-090000-
/O.CON.KCYS.FW.W.0012.210708T1700Z-210709T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
South Laramie Range/Medicine Bow NF-
240 AM MDT Thu Jul 8 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 301, 302, AND 309...

* AFFECTED AREA...Fire weather zones 301...302 and 309.

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 35 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$
148 
WWUS85 KCYS 082132
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
332 PM MDT Thu Jul 8 2021

...RED FLAG WARNING THIS AFTERNOON FOR PORTIONS OF SOUTHEAST 
WYOMING...

...RED FLAG WARNING REMAINS IN EFFECT FRIDAY FOR SOUTH CENTRAL
WYOMING...

WYZ304-305-307-308-090545-
/O.CON.KCYS.FW.W.0012.000000T0000Z-210709T0200Z/
/O.CON.KCYS.FW.W.0013.210709T1700Z-210710T0200Z/
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Snowy Range/Medicine Bow NF-Laramie Valley/Shirley Basin-
332 PM MDT Thu Jul 8 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY...

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT FRIDAY FOR 
GUSTY WINDS AND LOW HUMIDITY...

* AFFECTED AREA...Fire weather zones 304...305...307...and 308.

* WIND...West to southwest winds of 20 to 25 mph sustained with
  gusts to 35 mph. 

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$

WYZ301-302-309-090200-
/O.CON.KCYS.FW.W.0012.000000T0000Z-210709T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
South Laramie Range/Medicine Bow NF-
332 PM MDT Thu Jul 8 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,
AND 309...

* WIND...West to southwest winds of 20 to 25 mph sustained with 
  gusts to 35 mph.

* HUMIDITY...12 to 15 percent.

* HAINES...5 to 6.

* 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.

&&

$$
824 
WWUS85 KCYS 090139
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
739 PM MDT Thu Jul 8 2021

...RED FLAG WARNING REMAINS IN EFFECT FRIDAY FOR SOUTH CENTRAL
WYOMING...

WYZ304-305-307-308-090945-
/O.EXP.KCYS.FW.W.0012.000000T0000Z-210709T0200Z/
/O.CON.KCYS.FW.W.0013.210709T1700Z-210710T0200Z/
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Snowy Range/Medicine Bow NF-Laramie Valley/Shirley Basin-
739 PM MDT Thu Jul 8 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW HUMIDITY...

Gusty winds have decreased over the last hour over southeast
Wyoming. Therefore, will allow the Red Flag Warning for this
afternoon to expire on time. The Red Flag Warning for Friday
remains in effect beginning at 1100 AM MDT.  

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.

&&

$$

WYZ301-302-309-090245-
/O.EXP.KCYS.FW.W.0012.000000T0000Z-210709T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
South Laramie Range/Medicine Bow NF-
739 PM MDT Thu Jul 8 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

Gusty winds have decreased over the last hour over southeast
Wyoming. Therefore, will allow the Red Flag Warning to expire on 
time.

$$

TT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 1:38 PM MDTFire Weather WatchCYS13 hr
Jul 7, 2:59 PM MDTSpecial Weather StatementCYSNiobrara31 min
Jul 7, 3:58 PM MDTSevere Thunderstorm WarningCYSGoshen, Niobrara47 min
Jul 7, 4:39 PM MDTSevere Thunderstorm WarningCYSGoshen51 min

Nearby

Red Flag Warnings in Wyoming, 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.