Alert archive / Wyoming / Red Flag Warnings in 2020

Red Flag Warning 13, NWS Cheyenne, WY

July 16, 2020

NWS Cheyenne, WY issued this red flag warning at Jul 16, 2020, 8:16 PM MDT. It took effect at Jul 17, 2020, 10:00 AM 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: Jul 16, 2020, 8:16 PM MDT (02:16 UTC)
In effect from: Jul 17, 2020, 10:00 AM MDT
Expired: Jul 17, 2020, 8:00 PM MDT
In force: 10 hr
Issued by: NWS Cheyenne, WY

The text

As transmitted.

672 
WWUS85 KCYS 170216
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
816 PM MDT Thu Jul 16 2020

...RED FLAG WARNING FRIDAY FOR ZONES 301, 302, AND 311 FOR GUSTY 
WINDS AND LOW RELATIVE HUMIDITY... 
...FIRE WEATHER WATCH FRIDAY FOR ZONES 309 FOR GUSTY WINDS AND 
LOW RELATIVE HUMIDITY...

NEZ311-WYZ301-302-171215-
/O.UPG.KCYS.FW.A.0009.200717T1600Z-200718T0200Z/
/O.NEW.KCYS.FW.W.0013.200717T1600Z-200718T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
816 PM MDT Thu Jul 16 2020

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM MDT FRIDAY FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 301,
302, AND 311...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 10 AM to 8 PM MDT Friday. This
replaces the Fire Weather Watch for these zones.

* AFFECTED AREA...Fire weather zones 301, 302, and 311.

* WIND...West 15 to 25 MPH with gusts up to 35 MPH.

* HUMIDITY...As low as 9 percent.

* HAINES...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.

&&

$$

WYZ309-171215-
/O.CON.KCYS.FW.A.0009.200717T1600Z-200718T0200Z/
South Laramie Range/Medicine Bow NF-
816 PM MDT Thu Jul 16 2020

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONE 309...

* AFFECTED AREA...Fire weather zone 309.

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

* HUMIDITY...As low as 9 percent.

* HAINES...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.

&&

$$

Brothers

3 follow-up statements

728 
WWUS85 KCYS 170719
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
119 AM MDT Fri Jul 17 2020

...RED FLAG WARNING FRIDAY FOR ZONES 301...302...311 AND NORTHERN
FWZ 309 AND NORTHERN FWZ 310 FOR GUSTY WINDS AND LOW RELATIVE 
HUMIDITY...


WYZ309-180000-
/O.UPG.KCYS.FW.A.0009.200717T1600Z-200718T0200Z/
/O.EXA.KCYS.FW.W.0013.200717T1600Z-200718T0200Z/
South Laramie Range/Medicine Bow NF-
119 AM MDT Fri Jul 17 2020

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTHERN
PORTIONS OF FIRE WEATHER ZONE 309...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 10 AM this morning to 8 PM MDT
this evening. The Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Northern portions of FWZ 309.

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

* HUMIDITY...As low as 9 percent.

* HAINES...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.

&&

$$

WYZ310-180000-
/O.EXA.KCYS.FW.W.0013.200717T1600Z-200718T0200Z/
Platte/Goshen/Central and Eastern Laramie-
119 AM MDT Fri Jul 17 2020

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTHERN 
PORTIONS OF FIRE WEATHER ZONE 310...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 10 AM this morning to 8 PM MDT
this evening. 

* AFFECTED AREA...Northern portions of Fire weather zones 310.
 
* WIND...West 15 to 25 MPH with gusts up to 35 MPH.

* HUMIDITY...As low as 9 percent.

* HAINES...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-WYZ301-302-180000-
/O.CON.KCYS.FW.W.0013.200717T1600Z-200718T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
119 AM MDT Fri Jul 17 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
8 PM MDT THIS EVENING FOR GUSTY WEST WINDS AND LOW HUMIDITY FOR 
FIRE WEATHER ZONES 301, 302, AND 311...

* AFFECTED AREA...Fire weather zones 301, 302, and 311.

* WIND...West 15 to 25 MPH with gusts up to 35 MPH.

* HUMIDITY...As low as 9 percent.

* HAINES...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.

&&

$$

692 
WWUS85 KCYS 172008
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
208 PM MDT Fri Jul 17 2020

...RED FLAG WARNING TODAY FOR ZONES 301...302...311 AND NORTHERN 
FWZ 309 AND NORTHERN FWZ 310 FOR GUSTY WINDS AND LOW RELATIVE 
HUMIDITY...

...FIRE WEATHER WATCH FOR ZONES 309 AND 310 FROM 10 AM THROUGH 
6 PM SATURDAY...

WYZ309-310-180415-
/O.NEW.KCYS.FW.A.0010.200718T1600Z-200719T0000Z/
/O.CON.KCYS.FW.W.0013.000000T0000Z-200718T0200Z/
South Laramie Range/Medicine Bow NF-
Platte/Goshen/Central and Eastern Laramie-
208 PM MDT Fri Jul 17 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTHERN PORTIONS OF FIRE
WEATHER ZONE 310...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON FOR GUSTY WINDS AND LOW HUMIDITY...

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

* AFFECTED AREA...Southern portions of Fire Weather Zones 309 and
  310.

* WIND...West 20 to 25 mph with gusts to 30 mph.

* HUMIDITY...10 to 15 percent.

* HAINES...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.

&&

$$

NEZ311-WYZ301-302-180200-
/O.CON.KCYS.FW.W.0013.000000T0000Z-200718T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
208 PM MDT Fri Jul 17 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301,
302, AND 311...

* AFFECTED AREA...Fire weather zones 301, 302, and 311.

* WIND...West 15 to 25 MPH with gusts up to 35 MPH.

* HUMIDITY...As low as 9 percent.

* HAINES...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.

&&

$$

281 
WWUS85 KCYS 180155
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
755 PM MDT Fri Jul 17 2020

...RED FLAG WARNING WILL EXPIRE AT 8PM THIS EVENING FOR ZONES 
301, 302, 311, 309 AND 310 FOR GUSTY WINDS AND LOW RELATIVE 
HUMIDITY...

...FIRE WEATHER WATCH FOR ZONES 309 AND 310 FROM 10 AM THROUGH
6 PM SATURDAY...

WYZ309-310-181200-
/O.EXP.KCYS.FW.W.0013.000000T0000Z-200718T0200Z/
/O.CON.KCYS.FW.A.0010.200718T1600Z-200719T0000Z/
South Laramie Range/Medicine Bow NF-
Platte/Goshen/Central and Eastern Laramie-
755 PM MDT Fri Jul 17 2020

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR GUSTY
WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 309 AND 310...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING 
THROUGH SATURDAY AFTERNOON FOR GUSTY WINDS AND LOW HUMIDITY FOR 
FIRE WEATHER ZONES 309 AND 310... 

* AFFECTED AREA...Fire weather zones 309 and 310.

* WIND...West 15 to 20 mph with gusts to 25 mph.

* HUMIDITY...10 to 15 percent.

* HAINES...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.

&&

$$

NEZ311-WYZ301-302-180300-
/O.EXP.KCYS.FW.W.0013.000000T0000Z-200718T0200Z/
Pine Ridge/Nebraska National Forest/Oglala National Grasslands-
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
755 PM MDT Fri Jul 17 2020

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR GUSTY
WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, AND 
311...

Current observations show wind gust have decreased below 25mph
early this evening and relative humidity is expected to recover
over the next few hours; therefore, the Red Flag Warning will be 
allowed to expire. 

$$


AW/MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:23 PM MDT	Special Weather Statement	CYS	Laramie	37 min
Jul 16, 7:57 PM MDT	Special Weather Statement	CYS	Laramie	33 min
Jul 17, 2:08 PM MDT	Fire Weather Watch	CYS		12 hr

Nearby

Red Flag Warnings in Wyoming, 2020 Red Flag Warnings in Nebraska, 2020 Every red flag warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.