Alert archive / Wyoming / Red Flag Warnings in 2021

Red Flag Warning 34, NWS Cheyenne, WY

September 16, 2021

NWS Cheyenne, WY issued this red flag warning at Sep 16, 2021, 1:45 PM MDT. It took effect at Sep 17, 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 16, 2021, 1:45 PM MDT (19:45 UTC)
In effect from
Sep 17, 2021, 11:00 AM MDT
Expired
Sep 17, 2021, 8:00 PM MDT
In force
9 hr
Issued by
NWS Cheyenne, WY

The text

As transmitted.

737 
WWUS85 KCYS 161945
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
145 PM MDT Thu Sep 16 2021

...CRITICAL FIRE WEATHER CONDITIONS THROUGH SATURDAY AFTERNOON.
RED FLAG WARNINGS AND FIRE WEATHER WATCHES IN EFFECT....

WYZ301-303-308-171200-
/O.UPG.KCYS.FW.A.0032.210917T1700Z-210918T0200Z/
/O.NEW.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
/O.NEW.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
/O.CON.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-Central and Northern Carbon/Ferris-Seminoe-
Shirley Mountains-Laramie Valley/Shirley Basin-
145 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301... 
303 AND 308... 

...RED FLAG WARNING IN EFFECT THROUGH 8 PM MDT TODAY FOR GUSTY 
WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301...303 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 301...303 AND
308...

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH 
SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 301...303 AND 308...

The National Weather Service in Cheyenne continues the Red Flag
Warning for today through 8 PM. A Red Flag Warning has been issued
for Friday, which is in effect from 11 AM to 8 PM MDT. A Fire 
Weather Watch has also been issued. This Fire Weather Watch is in 
effect from Saturday morning through Saturday evening. 


* WIND...West winds from 15 to 25 gusting to 35 mph. Similar winds
  can be expected both Friday and Saturday late morning through
  the afternoon.

* HUMIDITY...10 to 15 percent. Similar humidity can be expected 
  both Friday and Saturday late morning through the afternoon.

* 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.

&&

$$

WYZ302-304>307-171200-
/O.UPG.KCYS.FW.A.0032.210917T1700Z-210918T0200Z/
/O.NEW.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
/O.CON.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
North Laramie Range/Medicine Bow NF-Southwest Carbon County-
Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin-
Snowy Range/Medicine Bow NF-
145 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 302...304
...305...306 AND 307... 

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

The National Weather Service in Cheyenne continues the Red Flag
Warning through 8 PM today. A Red Flag Warning has also been
issued for Friday, which is in effect from 11 AM to 8 PM MDT.


* WIND...West winds from 15 to 25 gusting to 35 mph. Similar winds
  can be expected Friday.

* HUMIDITY...10 to 15 percent. Similar humidity can be expected 
  Friday.

* 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.

&&

$$

NEZ311-WYZ310-171200-
/O.NEW.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
/O.CON.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Platte/Goshen/Central and Eastern Laramie-
145 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 310 AND 
311...

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 310 AND 311...

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

* AFFECTED AREA...Fire weather zone 310 and 311.

* WIND...West winds from 15 to 25 gusting to 35 mph. Similar winds
  can be expected Saturday.

* HUMIDITY...10 to 15 percent. Similar humidity can be expected 
  Saturday.

* 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.

&&

$$
5 follow-up statements
894 
WWUS85 KCYS 161949
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
149 PM MDT Thu Sep 16 2021

...CRITICAL FIRE WEATHER CONDITIONS THROUGH SATURDAY AFTERNOON.
RED FLAG WARNINGS AND FIRE WEATHER WATCHES IN EFFECT....

WYZ301-303-308-171200-
/O.CON.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
/O.CON.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
/O.CON.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-Central and Northern Carbon/Ferris-Seminoe-
Shirley Mountains-Laramie Valley/Shirley Basin-
149 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301...
303 AND 308...

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
301... 303 AND 308...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 301... 303 AND 308...

The National Weather Service in Cheyenne continues the Red Flag 
Warning for today through 8 PM. A Red Flag Warning has been issued
for Friday, which is in effect from 11 AM to 8 PM MDT. A Fire 
Weather Watch has also been issued. This Fire Weather Watch is in 
effect from Saturday morning through Saturday evening.

* WIND...West winds from 15 to 25 gusting to 35 mph. Similar 
  winds can be expected both Friday and Saturday late morning 
  through the afternoon. 

* HUMIDITY...10 to 15 percent. Similar humidity can be expected 
  both Friday and Saturday late morning through the afternoon.

* 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.

&&

$$

WYZ302-304>307-171200-
/O.CON.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
/O.CON.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
North Laramie Range/Medicine Bow NF-Southwest Carbon County-
Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin-
Snowy Range/Medicine Bow NF-
149 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 302...
304...305...306 AND 307...
...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
302...304...305...306 AND 307...

The National Weather Service in Cheyenne continues the Red Flag
Warning through 8 PM today. A Red Flag Warning has also been
issued for Friday, which is in effect from 11 AM to 8 PM MDT.

* WIND...West winds from 15 to 25 gusting to 35 mph. Similar 
  winds can be expected Friday. 

* HUMIDITY...10 to 15 percent. Similar humidity can be expected 
  Friday.

* 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.

&&

$$

NEZ311-WYZ310-171200-
/O.CON.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
/O.CON.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Platte/Goshen/Central and Eastern Laramie-
149 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 310 AND
311...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 310 AND 311...

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

* AFFECTED AREA...Fire weather zone 310 and 311.

* WIND...West winds from 15 to 25 gusting to 35 mph. Similar
  winds can be expected Saturday. 

* HUMIDITY...10 to 15 percent. Similar humidity can be expected 
  Saturday.

* 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.

&&

$$
543 
WWUS85 KCYS 170150
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
750 PM MDT Thu Sep 16 2021

...CRITICAL FIRE WEATHER CONDITIONS THROUGH SATURDAY AFTERNOON.
RED FLAG WARNINGS AND FIRE WEATHER WATCHES IN EFFECT....

WYZ301-303-308-171200-
/O.EXP.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
/O.CON.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
/O.CON.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-Central and Northern Carbon/Ferris-Seminoe-
Shirley Mountains-Laramie Valley/Shirley Basin-
750 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
301...303 AND 308... 
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING 
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE
WEATHER ZONES 301... 303 AND 308...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR 
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301...303 AND
308...

A Red Flag Warning has been issued for Friday, which is in effect
from 11 AM to 8 PM MDT. A Fire Weather Watch has also been 
issued. This Fire Weather Watch is in effect from Saturday morning
through Saturday evening.

* WIND...West winds from 15 to 25 gusting to 35 mph for late
  morning through the afternoon both Friday and Saturday. 

* 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.

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

&&

$$

WYZ302-304>307-171200-
/O.EXP.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
/O.CON.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
North Laramie Range/Medicine Bow NF-Southwest Carbon County-
Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin-
Snowy Range/Medicine Bow NF-
750 PM MDT Thu Sep 16 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
302...304...305...306 AND 307...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR 
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 302...304... 
305...306 AND 307... 

* WIND...West winds from 15 to 25 gusting 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.

&&

$$

NEZ311-WYZ310-171200-
/O.EXP.KCYS.FW.W.0033.000000T0000Z-210917T0200Z/
/O.CON.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Platte/Goshen/Central and Eastern Laramie-
750 PM MDT Thu Sep 16 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 310 AND 311...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR 
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 310 AND 311...

* AFFECTED AREA...Fire weather zones 310 and 311.

* WIND...West winds from 15 to 25 gusting to 35 mph. Similar winds
  can be expected on Saturday.

* HUMIDITY...10 to 15 percent. Similar humidity can be expected on
  Saturday. 

* HAINES...5 to 6

* 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.

&&

$$

Rubin
037 
WWUS85 KCYS 171120
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
520 AM MDT Fri Sep 17 2021

...CRITICAL FIRE WEATHER CONDITIONS THROUGH SATURDAY AFTERNOON.
RED FLAG WARNINGS AND FIRE WEATHER WATCHES IN EFFECT....

WYZ301-303-308-180000-
/O.CON.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
/O.CON.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-Central and Northern Carbon/Ferris-Seminoe-
Shirley Mountains-Laramie Valley/Shirley Basin-
520 AM MDT Fri Sep 17 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 301, 303, AND 308... 

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING 
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY
FOR FIRE WEATHER ZONES 301, 303, AND 308...

* WIND...West winds from 15 to 25 gusting to 35 mph for late 
  morning through the afternoon both Friday and Saturday. 

* 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.

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

&&

$$

WYZ302-304>307-180000-
/O.CON.KCYS.FW.W.0034.210917T1700Z-210918T0200Z/
North Laramie Range/Medicine Bow NF-Southwest Carbon County-
Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin-
Snowy Range/Medicine Bow NF-
520 AM MDT Fri Sep 17 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 302, 304, 305, 306, AND 307...

* WIND...West winds from 15 to 25 gusting 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.

&&

$$

NEZ311-WYZ310-180000-
/O.CON.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Platte/Goshen/Central and Eastern Laramie-
520 AM MDT Fri Sep 17 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY 
FOR FIRE WEATHER ZONES 310 AND 311...

* AFFECTED AREA...Fire weather zones 310 and 311.

* WIND...West winds from 15 to 25 gusting 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 Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$
380 
WWUS85 KCYS 171952
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
152 PM MDT Fri Sep 17 2021

...CRITICAL FIRE WEATHER CONDITIONS THROUGH SATURDAY AFTERNOON.
RED FLAG WARNINGS AND FIRE WEATHER WATCHES IN EFFECT....

WYZ301-303-308-181200-
/O.UPG.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
/O.NEW.KCYS.FW.W.0035.210918T1700Z-210919T0200Z/
/O.CON.KCYS.FW.W.0034.000000T0000Z-210918T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-Central and Northern Carbon/Ferris-Seminoe-
Shirley Mountains-Laramie Valley/Shirley Basin-
152 PM MDT Fri Sep 17 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301...303
AND 308... 

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

The National Weather Service in Cheyenne continues a Red Flag
Warning for today through 8 PM. A Red Flag Warning, is also in 
effect from 11 AM to 8 PM MDT Saturday. 

* WIND...West winds from 15 to 25 gusting to 35 mph for late
  morning through the afternoon both today and Saturday. 

* 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.

&&

$$

WYZ304-306-181200-
/O.NEW.KCYS.FW.W.0035.210918T1700Z-210919T0200Z/
/O.CON.KCYS.FW.W.0034.000000T0000Z-210918T0200Z/
Southwest Carbon County-Upper North Platte River Basin-
152 PM MDT Fri Sep 17 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 304 AND 
306...

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

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 winds from 15 to 25 gusting to 35 mph both today and
  Saturday.

* 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.

&&

$$

NEZ311-WYZ310-181200-
/O.UPG.KCYS.FW.A.0033.210918T1700Z-210919T0200Z/
/O.NEW.KCYS.FW.W.0035.210918T1700Z-210919T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Platte/Goshen/Central and Eastern Laramie-
152 PM MDT Fri Sep 17 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 310 AND 
311...

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 winds from 15 to 25 gusting 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.

&&

$$

WYZ302-305-307-180200-
/O.CON.KCYS.FW.W.0034.000000T0000Z-210918T0200Z/
North Laramie Range/Medicine Bow NF-
Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF-
152 PM MDT Fri Sep 17 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 302...305
AND 307...

* WIND...West winds from 15 to 25 gusting 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.

&&

$$
859 
WWUS85 KCYS 180145
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
745 PM MDT Fri Sep 17 2021

...RED FLAG WARNING FOR MUCH OF SOUTHEAST WYOMING AND THE FAR
NORTHERN NEBRASKA PANHANDLE LATE SATURDAY MORNING THROUGH EARLY
SATURDAY EVENING...

WYZ301-303-304-306-308-181200-
/O.EXP.KCYS.FW.W.0034.000000T0000Z-210918T0200Z/
/O.CON.KCYS.FW.W.0035.210918T1700Z-210919T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-Central and Northern Carbon/Ferris-Seminoe-
Shirley Mountains-Southwest Carbon County-
Upper North Platte River Basin-Laramie Valley/Shirley Basin-
745 PM MDT Fri Sep 17 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
301...303...304...306 AND 308...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR 
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301...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 winds from 15 to 25 gusting 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.

&&

$$

WYZ302-305-307-180245-
/O.EXP.KCYS.FW.W.0034.000000T0000Z-210918T0200Z/
North Laramie Range/Medicine Bow NF-
Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF-
745 PM MDT Fri Sep 17 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 302...305 AND
307...

The Red Flag Warning will expire at 8 PM this evening.

$$

NEZ311-WYZ310-181200-
/O.CON.KCYS.FW.W.0035.210918T1700Z-210919T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Platte/Goshen/Central and Eastern Laramie-
745 PM MDT Fri Sep 17 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
310 AND 311...

* WIND...West winds from 15 to 25 gusting 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.

&&

$$

Rubin

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 1:45 PM MDTFire Weather WatchCYS24 hr

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.