Alert archive / Wyoming / Red Flag Warnings in 2021
Red Flag Warning 19, NWS Cheyenne, WY
NWS Cheyenne, WY issued this red flag warning at Aug 21, 2021, 8:58 PM MDT. It took effect at Aug 22, 2021, 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
- Aug 21, 2021, 8:58 PM MDT (02:58 UTC)
- In effect from
- Aug 22, 2021, 10:00 AM MDT
- Expired
- Aug 22, 2021, 8:00 PM MDT
- In force
- 10 hr
- Issued by
- NWS Cheyenne, WY
The text
As transmitted.
795 WWUS85 KCYS 220258 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 858 PM MDT Sat Aug 21 2021 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ALONG AND EAST OF INTERSTATE 25 IN SOUTHEAST WYOMING AND WESTERN NEBRASKA. RED FLAG WARNINGS IN EFFECT FOR SUNDAY... NEZ311>313-WYZ301-310-221200- /O.UPG.KCYS.FW.A.0018.210822T1600Z-210823T0200Z/ /O.NEW.KCYS.FW.W.0019.210822T1600Z-210823T0200Z/ Pine Ridge/Nebraska National Forest/Oglala National Grasslands- Box Butte/South Sioux- Scotts Bluff National Monument/Wildcat Hills- Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-Platte/Goshen/Central and Eastern Laramie- 858 PM MDT Sat Aug 21 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM MDT SUNDAY FOR GUSTY WINDS AND LOW HUMIDITY... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 10 AM to 8 PM MDT Sunday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 301, 310, 311, 312, and 313. * WIND...West 20 to 25 MPH with gusts up to 40 MPH. * HUMIDITY...10 to 15 percent. * 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. && $$
3 follow-up statements
858 WWUS85 KCYS 220835 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 235 AM MDT Sun Aug 22 2021 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ALONG AND EAST OF INTERSTATE 25 IN SOUTHEAST WYOMING AND WESTERN NEBRASKA. RED FLAG WARNINGS IN EFFECT FOR SUNDAY... WYZ301-230200- /O.NEW.KCYS.FW.A.0019.210823T1800Z-210824T0200Z/ /O.CON.KCYS.FW.W.0019.210822T1600Z-210823T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland- 235 AM MDT Sun Aug 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 301... ...FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 301... The National Weather Service in Cheyenne has issued a Fire Weather Watch, which is in effect from Monday afternoon through Monday evening. * AFFECTED AREA...Fire Weather Zones 301, 310, 311, 312, and 313. * WIND...West 20 to 25 MPH with gusts up to 40 MPH. * HUMIDITY...10 to 15 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions may develop. Listen for later forecasts and possible Red Flag Warnings. && $$ NEZ311>313-WYZ310-230200- /O.CON.KCYS.FW.W.0019.210822T1600Z-210823T0200Z/ Pine Ridge/Nebraska National Forest/Oglala National Grasslands- Box Butte/South Sioux- Scotts Bluff National Monument/Wildcat Hills- Platte/Goshen/Central and Eastern Laramie- 235 AM MDT Sun Aug 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 310, 311, 312, AND 313... * AFFECTED AREA...Fire Weather Zones 301, 310, 311, 312, and 313. * WIND...West 20 to 25 MPH with gusts up to 40 MPH. * HUMIDITY...10 to 15 percent. * 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. && $$ WM
052 WWUS85 KCYS 222034 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 234 PM MDT Sun Aug 22 2021 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED ALONG AND EAST OF INTERSTATE 25 IN SOUTHEAST WYOMING AND WESTERN NEBRASKA WILL REMAIN IN EFFECT TODAY... ...RED FLAG WARNINGS ARE ALSO IN EFFECT FOR FIRE WEATHER ZONE 301 FROM NOON TO 8 PM MONDAY... WYZ301-231100- /O.UPG.KCYS.FW.A.0019.210823T1800Z-210824T0200Z/ /O.NEW.KCYS.FW.W.0020.210823T1800Z-210824T0200Z/ /O.CON.KCYS.FW.W.0019.000000T0000Z-210823T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland- 234 PM MDT Sun Aug 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 301... ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 301... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Monday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 301, 310, 311, 312, and 313. * WIND...West 20 to 25 MPH with gusts up to 40 MPH. * HUMIDITY...10 to 15 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ NEZ311>313-WYZ310-230200- /O.CON.KCYS.FW.W.0019.000000T0000Z-210823T0200Z/ Pine Ridge/Nebraska National Forest/Oglala National Grasslands- Box Butte/South Sioux- Scotts Bluff National Monument/Wildcat Hills- Platte/Goshen/Central and Eastern Laramie- 234 PM MDT Sun Aug 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 310, 311, 312, AND 313... * AFFECTED AREA...Fire Weather Zones 301, 310, 311, 312, and 313. * WIND...West 20 to 25 MPH with gusts up to 40 MPH. * HUMIDITY...10 to 15 percent. * 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. && $$
983 WWUS85 KCYS 230158 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 758 PM MDT Sun Aug 22 2021 ...RED FLAG WARNINGS IN EFFECT FOR FIRE WEATHER ZONE 301 FROM NOON TO 8 PM MONDAY... WYZ301-231000- /O.EXP.KCYS.FW.W.0019.000000T0000Z-210823T0200Z/ /O.CON.KCYS.FW.W.0020.210823T1800Z-210824T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland- 758 PM MDT Sun Aug 22 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 301... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Monday. * AFFECTED AREA...Fire Weather Zones 301. * WIND...West 20 to 25 MPH with gusts up to 40 MPH. * HUMIDITY...10 to 15 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ NEZ311>313-WYZ310-230300- /O.EXP.KCYS.FW.W.0019.000000T0000Z-210823T0200Z/ Pine Ridge/Nebraska National Forest/Oglala National Grasslands- Box Butte/South Sioux- Scotts Bluff National Monument/Wildcat Hills- Platte/Goshen/Central and Eastern Laramie- 758 PM MDT Sun Aug 22 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR FIRE WEATHER ZONES 301, 310, 311, 312, AND 313... Light winds will continue for another hour or two, but have dropped below Red Flag criteria for the evening. $$
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 2:35 AM MDT | Fire Weather Watch | CYS | 12 hr | |
| Aug 22, 2:34 PM MDT | Red Flag Warning | CYS | 29 hr |
Nearby
Red Flag Warnings in Wyoming, 2021Red Flag Warnings in Nebraska, 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.