Alert archive / Wyoming / Red Flag Warnings in 2021
Red Flag Warning 27, NWS Cheyenne, WY
NWS Cheyenne, WY issued this red flag warning at Aug 30, 2021, 2:06 PM MDT. It took effect at Aug 31, 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
- Aug 30, 2021, 2:06 PM MDT (20:06 UTC)
- In effect from
- Aug 31, 2021, 12:00 PM MDT
- Expired
- Aug 31, 2021, 8:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Cheyenne, WY
The text
As transmitted.
121 WWUS85 KCYS 302006 AAA RFWCYS URGENT - FIRE WEATHER MESSAGE...UPDATED National Weather Service Cheyenne WY 206 PM MDT Mon Aug 30 2021 ...RED FLAG WARNING IN EFFECT TODAY AND TUESDAY FOR PORTIONS OF SOUTHEAST WYOMING... ...FIRE WEATHER WATCH IN EFFECT TUESDAY FOR PORTIONS OF SOUTHEAST WYOMING DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY IN THE AFTERNOON... WYZ303-304-311030- /O.UPG.KCYS.FW.A.0025.210831T1800Z-210901T0200Z/ /O.NEW.KCYS.FW.W.0027.210831T1800Z-210901T0200Z/ /O.CON.KCYS.FW.W.0026.000000T0000Z-210831T0200Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County- 206 PM MDT Mon Aug 30 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Tuesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire weather zones 303...304. * WIND...West winds of 15 to 25 mph sustained with gusts to 30 to 35 mph. Similar winds are expected Tuesday afternoon. * HUMIDITY...10 to 15 percent during the afternoon. * HAINES...5 to 6 or High Potential for Large Fire Growth. * 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. && $$ WYZ301-302-305-307-308-311030- /O.CON.KCYS.FW.W.0026.000000T0000Z-210831T0200Z/ /O.CON.KCYS.FW.A.0025.210831T1800Z-210901T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF- Laramie Valley/Shirley Basin- 206 PM MDT Mon Aug 30 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR GUSTY WEST WINDS AND LOW HUMIDITY... The National Weather Service in Cheyenne continues the Fire Weather Watch, which is in effect from Tuesday afternoon through Tuesday evening. * AFFECTED AREA...Fire weather zones 302...305...307 and 308. * WIND...West winds of 15 to 25 mph sustained with gusts to 30 to 35 mph. * HUMIDITY...10 to 15 percent during the afternoon. * HAINES...5 to 6 or High Potential for Large Fire Growth. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions may develop. Listen for later forecasts and possible Red Flag Warnings. && $$ WYZ310-310200- /O.CON.KCYS.FW.W.0026.000000T0000Z-210831T0200Z/ Platte/Goshen/Central and Eastern Laramie- 206 PM MDT Mon Aug 30 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 310... * AFFECTED AREA...Fire weather zone 310. * WIND...West winds of 10 to 20 mph sustained with gusts around 25 mph. * HUMIDITY...8 to 14 percent during the afternoon. * HAINES...5 to 6 or High Potential for Large Fire Growth. * 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. && $$
3 follow-up statements
988 WWUS85 KCYS 310203 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 803 PM MDT Mon Aug 30 2021 ...RED FLAG WARNING IN EFFECT TUESDAY FOR PORTIONS OF SOUTHEAST WYOMING... ...FIRE WEATHER WATCH IN EFFECT TUESDAY FOR PORTIONS OF SOUTHEAST WYOMING DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY IN THE AFTERNOON... WYZ303-304-311200- /O.EXP.KCYS.FW.W.0026.000000T0000Z-210831T0200Z/ /O.CON.KCYS.FW.W.0027.210831T1800Z-210901T0200Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County- 803 PM MDT Mon Aug 30 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Tuesday. * AFFECTED AREA...Fire weather zones 303...304. * WIND...West winds of 15 to 25 mph sustained with gusts to 30 to35 mph. Similar winds are expected Tuesday afternoon. * HUMIDITY...10 to 15 percent during the afternoon. * HAINES...5 to 6 or High Potential for Large Fire Growth. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ301-302-305-307-308-311200- /O.EXP.KCYS.FW.W.0026.000000T0000Z-210831T0200Z/ /O.CON.KCYS.FW.A.0025.210831T1800Z-210901T0200Z/ 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- 803 PM MDT Mon Aug 30 2021 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR GUSTY WEST WINDS AND LOW HUMIDITY... The National Weather Service in Cheyenne continues the Fire Weather Watch, which is in effect from Tuesday afternoon through Tuesday evening. * AFFECTED AREA...Fire weather zones 302...305...307 and 308. * WIND...West winds of 15 to 25 mph sustained with gusts to 30 to35 mph. * HUMIDITY...10 to 15 percent during the afternoon. * HAINES...5 to 6 or High Potential for Large Fire Growth. * 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. && $$ WYZ310-310315- /O.EXP.KCYS.FW.W.0026.000000T0000Z-210831T0200Z/ Platte/Goshen/Central and Eastern Laramie- 803 PM MDT Mon Aug 30 2021 ...RED FLAG WARNING HAS EXPIRED FOR GUSTY WEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 310... Winds have diminished and humidity values have improved to warrant expiring the Red Flag Warning. $$
276 WWUS85 KCYS 310804 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 204 AM MDT Tue Aug 31 2021 ...RED FLAG WARNING IN EFFECT TODAY FOR GUSTY WINDS AND LOW HUMIDITY FWZ WESTERN 301...302...303...304 AND NORTHERN 308... WYZ305-307-310915- /O.CAN.KCYS.FW.A.0025.210831T1800Z-210901T0200Z/ Sierra Madre Range/Medicine Bow NF-Snowy Range/Medicine Bow NF- 204 AM MDT Tue Aug 31 2021 ...FIRE WEATHER WATCH IS CANCELLED FOR GUSTY WEST WINDS AND LOW HUMIDITY... The National Weather Service in Cheyenne has cancelled the Fire Weather Watch. Winds are expected to remain below critical levels this afternoon. A few gusts in the 20 mph range are possible...but overall...critical wind gusts are no longer expected. Thus the Fire Weather Watch has been cancelled. $$ WYZ301-302-308-010000- /O.UPG.KCYS.FW.A.0025.210831T1800Z-210901T0200Z/ /O.EXA.KCYS.FW.W.0027.210831T1800Z-210901T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Laramie Valley/Shirley Basin- 204 AM MDT Tue Aug 31 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon today to 8 PM MDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire weather zones Western 301...302 and Northern Fire weather zone 308. * WIND...West winds of 15 to 25 mph sustained with gusts to 30 to 35 mph. * HUMIDITY...7 to 12 percent during the afternoon. * HAINES...5 to 6 or High Potential for Large Fire Growth. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ303-304-010000- /O.CON.KCYS.FW.W.0027.210831T1800Z-210901T0200Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County- 204 AM MDT Tue Aug 31 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY... * AFFECTED AREA...Fire weather zones 303...304. * WIND...West winds of 15 to 25 mph sustained with gusts to 30 to 35 mph. * HUMIDITY...10 to 15 percent during the afternoon. * HAINES...5 to 6 or High Potential for Large Fire Growth. * 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. && $$
191 WWUS85 KCYS 010145 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 745 PM MDT Tue Aug 31 2021 WYZ301>304-308-010245- /O.EXP.KCYS.FW.W.0027.000000T0000Z-210901T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County-Laramie Valley/Shirley Basin- 745 PM MDT Tue Aug 31 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, 303, 304, AND 308... Winds have diminished and humidity values have improved to warrant allowing the Red Flag Warning to expire this evening. $$
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 7:15 PM MDT | Red Flag Warning | CYS | 25 hr | |
| Aug 30, 1:57 AM MDT | Fire Weather Watch | CYS | 24 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.