Alert archive / Wyoming / Red Flag Warnings in 2021

Red Flag Warning 8, NWS Cheyenne, WY

June 18, 2021

NWS Cheyenne, WY issued this red flag warning at Jun 18, 2021, 7:18 PM MDT. It took effect at Jun 19, 2021, 12:00 PM MDT. It was in force for 8 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
Jun 18, 2021, 7:18 PM MDT (01:18 UTC)
In effect from
Jun 19, 2021, 12:00 PM MDT
Expired
Jun 19, 2021, 8:00 PM MDT
In force
8 hr
Issued by
NWS Cheyenne, WY

The text

As transmitted.

129 
WWUS85 KCYS 190118
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
718 PM MDT Fri Jun 18 2021

...RED FLAG WARNING IN EFFECT SATURDAY AFTERNOON AND EARLY EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301 AND 302...

WYZ301-302-191200-
/O.UPG.KCYS.FW.A.0005.210619T1800Z-210620T0200Z/
/O.NEW.KCYS.FW.W.0008.210619T1800Z-210620T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
718 PM MDT Fri Jun 18 2021

...RED FLAG WARNING IN EFFECT SATURDAY AFTERNOON AND EARLY EVENING 
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301 AND 302...

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Watch is no longer in effect. 

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

* WIND...West 15 to 20 mph with gusts to 30 mph.

* HUMIDITY...10 to 15 percent.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly.
  Outdoor burning is discouraged.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. The combination of 
gusty winds...low relative humidity...and warm temperatures can 
contribute to extreme fire behavior.

&&

$$
3 follow-up statements
562 
WWUS85 KCYS 190719
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
119 AM MDT Sat Jun 19 2021

...RED FLAG WARNING IN EFFECT THIS AFTERNOON AND EARLY EVENING 
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301 AND 
302...

WYZ301-302-200000-
/O.CON.KCYS.FW.W.0008.210619T1800Z-210620T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
119 AM MDT Sat Jun 19 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING FOR GUSTY WEST WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 301 AND 302...

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

* WIND...West 15 to 20 mph with gusts to 30 mph.

* HUMIDITY...10 to 15 percent.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is discouraged.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. The combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$
305 
WWUS85 KCYS 191854
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
1254 PM MDT Sat Jun 19 2021

...RED FLAG WARNING IN EFFECT THIS AFTERNOON AND EARLY EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301 AND
302...

...FIRE WEATHER WATCH IS IN EFFECT FOR SUNDAY AFTERNOON FROM 10AM
TO 6PM FOR FIRE WEATHER ZONES 305 AND 307...

WYZ301-302-200200-
/O.CON.KCYS.FW.W.0008.000000T0000Z-210620T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
1254 PM MDT Sat Jun 19 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR LOW HUMIDITIES AND GUSTY WINDS FOR FIRE WEATHER ZONES 301 AND
302...

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

* WIND...West 15 to 20 mph with gusts to 30 mph.

* HUMIDITY...10 to 15 percent.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is discouraged.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. The combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ305-307-201100-
/O.NEW.KCYS.FW.A.0006.210620T1600Z-210621T0000Z/
Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF-
1254 PM MDT Sat Jun 19 2021

...FIRE WEATHER WATCH IN EFFECT FROM 10AM SUNDAY MORNING THROUGH 
6 PM SUNDAY FOR LOW HUMIDITIES AND GUSTY WINDS FOR FIRE WEATHER 
ZONES 305 AND 307...

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

* AFFECTED AREA...Fire weather zone 305. Fire weather zone 307.

* WIND...West to northwest winds at 15 to 25 mph with gusts up to
  30 mph.

* HUMIDITY...13 to 20 percent. 
* HAINES...4 to 5


* 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.

&&

$$
313 
WWUS85 KCYS 200149
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
749 PM MDT Sat Jun 19 2021

...RED FLAG WARNING IS IN EFFECT SUNDAY FROM NOON UNTIL 7 PM MDT
FOR FIRE WEATHER ZONE 305...

WYZ301-302-200300-
/O.EXP.KCYS.FW.W.0008.000000T0000Z-210620T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
749 PM MDT Sat Jun 19 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR GUSTY
WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301 AND 302...

Winds will diminish and relative humidities rise above 15 percent
this evening.

$$

WYZ307-200300-
/O.CAN.KCYS.FW.A.0006.210620T1600Z-210621T0000Z/
Snowy Range/Medicine Bow NF-
749 PM MDT Sat Jun 19 2021

...FIRE WEATHER WATCH IS CANCELLED FOR GUSTY WINDS AND LOW
HUMIDITY FOR FIRE WEATHER ZONE 307...

The National Weather Service in Cheyenne has cancelled the Fire
Weather Watch. 

Minimum relative humidities Sunday afternoon will be near 15
percent with wind gusts near 25 mph.

$$

WYZ305-201200-
/O.UPG.KCYS.FW.A.0006.210620T1600Z-210621T0000Z/
/O.NEW.KCYS.FW.W.0009.210620T1800Z-210621T0100Z/
Sierra Madre Range/Medicine Bow NF-
749 PM MDT Sat Jun 19 2021

...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MDT SUNDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 305...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from Noon to 7 PM MDT Sunday. The 
Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Fire weather zone 305.

* WIND...West to northwest 15 to 20 mph with gusts up to 30 mph.

* HUMIDITY...12 to 17 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 
gusty winds...low relative humidity...and warm temperatures can 
contribute to extreme fire behavior.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:21 PM MDTSpecial Weather StatementCYSLaramie39 min
Jun 18, 7:35 PM MDTSevere Thunderstorm WarningCYSLaramie40 min
Jun 18, 7:54 PM MDTSevere Thunderstorm WarningCYSLaramie51 min
Jun 18, 8:13 PM MDTSevere Thunderstorm WarningCYSLaramie47 min
Jun 18, 8:29 PM MDTSevere Thunderstorm WarningCYSLaramie46 min
Jun 18, 8:30 PM MDTSpecial Weather StatementCYSLaramie45 min
Jun 19, 12:54 PM MDTFire Weather WatchCYS7 hr
Jun 19, 1:18 PM MDTSpecial Weather StatementCYSLaramie42 min
Jun 19, 1:51 PM MDTSpecial Weather StatementCYSLaramie24 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.