Alert archive / Wyoming / Red Flag Warnings in 2020
Red Flag Warning 39, NWS Cheyenne, WY
NWS Cheyenne, WY issued this red flag warning at Sep 17, 2020, 1:46 PM MDT. It took effect at Sep 18, 2020, 10:00 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 17, 2020, 1:46 PM MDT (19:46 UTC)
- In effect from
- Sep 18, 2020, 10:00 AM MDT
- Expired
- Sep 18, 2020, 7:00 PM MDT
- In force
- 9 hr
- Issued by
- NWS Cheyenne, WY
The text
As transmitted.
645 WWUS85 KCYS 171946 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 146 PM MDT Thu Sep 17 2020 ...Fire Weather Watch for Saturday for much of Southeast Wyoming... .Critical conditions look likely for Saturday afternoon and evening across much of southeast Wyoming due to low humidities and gusty winds. WYZ303-304-181200- /O.NEW.KCYS.FW.W.0039.200918T1800Z-200919T0100Z/ /O.CON.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County- 146 PM MDT Thu Sep 17 2020 ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MDT FRIDAY FOR GUSTY SOUTHWEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303 AND 304... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR VERY STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303 AND 304... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon to 7 PM MDT Friday. * AFFECTED AREA...Fire weather zone 303 and 304. * WIND...Southwest 15 to 20 mph with gusts to 30 mph. Much stronger winds with gusts to 45 mph are expected across Carbon County Saturday afternoon. * 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. 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. && $$ WYZ310-181200- /O.EXA.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Platte/Goshen/Central and Eastern Laramie- 146 PM MDT Thu Sep 17 2020 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 310... The National Weather Service in Cheyenne has issued a Fire Weather Watch, which is in effect from Saturday afternoon through Saturday evening. * AFFECTED AREA...Fire weather zone 310. * WIND...Southwest 15 to 25 mph with gusts to 35 mph. * HUMIDITY...10 to 15 percent. * HAINES...5. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions may develop. Listen for later forecasts and possible Red Flag Warnings. && $$ WYZ301-302-305>309-181200- /O.CON.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin- Snowy Range/Medicine Bow NF-Laramie Valley/Shirley Basin- South Laramie Range/Medicine Bow NF- 146 PM MDT Thu Sep 17 2020 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG SOUTHWEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, 305, 306, 307, 308, AND 309... * AFFECTED AREA...Fire weather zones 301...302...305 through 309. * WIND...Southwest 20 to 30 mph with gusts to 40 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. && $$
4 follow-up statements
613 WWUS85 KCYS 180724 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 124 AM MDT Fri Sep 18 2020 ...Red Flag Warning for western zones this afternoon with a Fire Weather Watch for Saturday afternoon for much of southeast Wyoming... .Critical conditions look likely for Saturday afternoon and evening across much of southeast Wyoming due to low humidities and gusty winds. WYZ303-304-190100- /O.CON.KCYS.FW.W.0039.200918T1800Z-200919T0100Z/ /O.CON.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County- 124 AM MDT Fri Sep 18 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR GUSTY SOUTHWEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303 AND 304... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR GUSTY SOUTHWEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303 AND 304... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon to 7 PM MDT Friday. * AFFECTED AREA...Fire weather zone 303 and 304. * WIND...Southwest 15 to 20 mph with gusts to 30 mph. Much stronger winds with gusts to 45 mph are expected across Carbon County Saturday afternoon. * HUMIDITY...10 to 15 percent. * HAINES...5 to 6. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions may develop. Listen for later forecasts and possible Red Flag Warnings. A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ301-302-305>310-190100- /O.CON.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin- Snowy Range/Medicine Bow NF-Laramie Valley/Shirley Basin- South Laramie Range/Medicine Bow NF- Platte/Goshen/Central and Eastern Laramie- 124 AM MDT Fri Sep 18 2020 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG SOUTHWEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, 305, 306, 307, 308, AND 309... * AFFECTED AREA...Fire weather zones 301...302...305 through 309. * WIND...Southwest 20 to 30 mph with gusts to 40 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. && $$ Rubin
654 WWUS85 KCYS 181516 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 916 AM MDT Fri Sep 18 2020 ...Red Flag Warning for western zones this afternoon with a Fire Weather Watch for Saturday afternoon for much of southeast Wyoming... .Critical conditions look likely for Saturday afternoon and evening across much of southeast Wyoming due to low humidities and gusty winds. WYZ305>307-190000- /O.EXB.KCYS.FW.W.0039.200918T1600Z-200919T0100Z/ /O.CON.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin- Snowy Range/Medicine Bow NF- 916 AM MDT Fri Sep 18 2020 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 305, 306, AND 307... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 305, 306, AND 307... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect until 7 PM MDT this evening. * AFFECTED AREA...Fire weather zones 301...302...305 through 309. * WIND...Southwest 15 to 20 mph with gusts to 30 mph today. Southwest 20 to 30 mph with gusts to 40 mph Saturday. * HUMIDITY...10 to 15 percent. * HAINES...5. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions may develop. Listen for later forecasts and possible Red Flag Warnings. && $$ WYZ303-304-190000- /O.EXT.KCYS.FW.W.0039.200918T1600Z-200919T0100Z/ /O.CON.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County- 916 AM MDT Fri Sep 18 2020 ...RED FLAG WARNING NOW IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR GUSTY SOUTHWEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303 AND 304... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303 AND 304... * AFFECTED AREA...Fire weather zone 303 and 304. * WIND...Southwest 15 to 20 mph with gusts to 30 mph. Much stronger winds with gusts to 45 mph are expected across Carbon County Saturday afternoon. * 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. 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. && $$ WYZ301-302-308>310-190000- /O.CON.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Laramie Valley/Shirley Basin-South Laramie Range/Medicine Bow NF- Platte/Goshen/Central and Eastern Laramie- 916 AM MDT Fri Sep 18 2020 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, 308, 309, AND 310... * AFFECTED AREA...Fire weather zones 301...302...305 through 309. * WIND...Southwest 20 to 30 mph with gusts to 40 mph. * HUMIDITY...10 to 15 percent. * HAINES...5. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions may develop. Listen for later forecasts and possible Red Flag Warnings. && $$
497 WWUS85 KCYS 181949 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 149 PM MDT Fri Sep 18 2020 ...RED FLAG WARNING THROUGH 8 PM THIS EVENING FOR FWZ 303 THROUGH 307 FOR GUSTY WINDS AND LOW HUMIDITY... .VERY STRONG WINDS AND LOW HUMIDITY SATURDAY FOR ENTIRE SOUTHEAST WYOMING. RED FLAG WARNINGS IN EFFECT FWZ 301 THROUGH 310... WYZ303>307-191200- /O.UPG.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ /O.NEW.KCYS.FW.W.0040.200919T1600Z-200920T0200Z/ /O.CON.KCYS.FW.W.0039.000000T0000Z-200919T0100Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County-Sierra Madre Range/Medicine Bow NF- Upper North Platte River Basin-Snowy Range/Medicine Bow NF- 149 PM MDT Fri Sep 18 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303 THROUGH 307... ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM MDT SATURDAY FOR STRONG WINDS...LOW HUMIDITY AND WIDELY SCATTERED DRY THUNDERSTORMS FOR FIRE WEATHER ZONES 303 THROUGH 307... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 10 AM to 8 PM MDT Saturday. The Fire Weather Watch is no longer in effect. The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect until 7 PM MDT this evening. * AFFECTED AREA...Fire weather zones 301...302...305 through 309. * WIND...Southwest 15 to 20 mph with gusts to 30 mph today. Southwest 20 to 30 mph with gusts to 40 mph Saturday. * HUMIDITY...10 to 15 percent. * HAINES...5. * THUNDERSTORMS...Widely scattered dry thunderstorms possible late Saturday afternoon that could lead to additional fire starts as well as strong and erratic downburst winds. * 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. && $$ WYZ301-302-308>310-191200- /O.UPG.KCYS.FW.A.0029.200919T1800Z-200920T0200Z/ /O.NEW.KCYS.FW.W.0040.200919T1600Z-200920T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Laramie Valley/Shirley Basin-South Laramie Range/Medicine Bow NF- Platte/Goshen/Central and Eastern Laramie- 149 PM MDT Fri Sep 18 2020 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM MDT SATURDAY FOR STRONG SOUTHWEST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, 308, 309, AND 310... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 10 AM to 8 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * WIND...Southwest 20 to 30 mph with gusts to 40 mph. * HUMIDITY...10 to 15 percent. * HAINES...5. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
910 WWUS85 KCYS 190056 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 656 PM MDT Fri Sep 18 2020 .VERY STRONG WINDS AND LOW HUMIDITY SATURDAY FOR ENTIRE SOUTHEAST WYOMING. RED FLAG WARNINGS REMAIN IN EFFECT FWZ 301 THROUGH 310... WYZ303>307-190900- /O.EXP.KCYS.FW.W.0039.000000T0000Z-200919T0100Z/ /O.CON.KCYS.FW.W.0040.200919T1600Z-200920T0200Z/ Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- Southwest Carbon County-Sierra Madre Range/Medicine Bow NF- Upper North Platte River Basin-Snowy Range/Medicine Bow NF- 656 PM MDT Fri Sep 18 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM MDT SATURDAY FOR FIRE WEATHER ZONES 303 THROUGH 307... ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING ... Red Flag Warning for this evening has been allowed to expire. Please note that the Red Flag Warning remains in effect from 10 AM to 8 PM MDT Saturday. The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 10 AM MDT to 7 PM MDT Saturday. * AFFECTED AREA...All of southeast Wyoming. * WIND...Southwest 20 to 30 mph with gusts to 40 mph Saturday. * HUMIDITY...10 to 15 percent. * HAINES...5. * THUNDERSTORMS...Widely scattered dry thunderstorms possible late Saturday afternoon that could lead to additional fire starts as well as strong and erratic downburst winds. * 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. && $$ WYZ301-302-308>310-190900- /O.CON.KCYS.FW.W.0040.200919T1600Z-200920T0200Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland-North Laramie Range/Medicine Bow NF- Laramie Valley/Shirley Basin-South Laramie Range/Medicine Bow NF- Platte/Goshen/Central and Eastern Laramie- 656 PM MDT Fri Sep 18 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM MDT SATURDAY FOR FIRE WEATHER ZONES 301, 302, 308, 309, AND 310... * WIND...Southwest 20 to 30 mph with gusts to 40 mph. * HUMIDITY...10 to 15 percent. * HAINES...5. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 1:37 AM MDT | Fire Weather Watch | CYS | 36 hr |
Nearby
Red Flag Warnings in Wyoming, 2020Every 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.