Alert archive / Wyoming / Red Flag Warnings in 2021
Red Flag Warning 11, NWS Cheyenne, WY
NWS Cheyenne, WY issued this red flag warning at Jun 23, 2021, 9:36 AM MDT. It took effect at Jun 23, 2021, 11:00 AM 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 23, 2021, 9:36 AM MDT (15:36 UTC)
- In effect from
- Jun 23, 2021, 11:00 AM MDT
- Expired
- Jun 23, 2021, 7:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Cheyenne, WY
The text
As transmitted.
976 WWUS85 KCYS 231536 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 936 AM MDT Wed Jun 23 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 309... WYZ301-302-305-307-231645- /O.CAN.KCYS.FW.A.0008.210623T1700Z-210624T0200Z/ 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- 936 AM MDT Wed Jun 23 2021 ...FIRE WEATHER WATCH IS CANCELLED FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 301, 302, 305, AND 307... The National Weather Service in Cheyenne has cancelled the Fire Weather Watch. Minimum relative humidities this afternoon will lower to 12 to 15 percent, however wind speeds will be less than 25 mph. $$ WYZ309-240100- /O.UPG.KCYS.FW.A.0008.210623T1700Z-210624T0200Z/ /O.NEW.KCYS.FW.W.0011.210623T1700Z-210624T0100Z/ South Laramie Range/Medicine Bow NF- 936 AM MDT Wed Jun 23 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 309... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 11 AM to 7 PM MDT this evening. The Fire Weather Watch is no longer in effect. * WIND...West 15 to 20 MPH sustained with gusts up to 30 MPH. Gusts of 40 to 60 MPH will be possible in the vicinity of high- based showers this afternoon. * HUMIDITY...12 to 15 percent in the afternoon. * HAINES...5 to 6. * IMPACTS...Any fires that develop could spread rapidly. Outdoor burning is strongly discouraged. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
1 follow-up statement
223 WWUS85 KCYS 240054 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 654 PM MDT Wed Jun 23 2021 WYZ309-240200- /O.EXP.KCYS.FW.W.0011.000000T0000Z-210624T0100Z/ South Laramie Range/Medicine Bow NF- 654 PM MDT Wed Jun 23 2021 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 309... Winds have diminished below threshold to warrant Red Flag Warning to expire. $$ WM
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 2:10 PM MDT | Special Weather Statement | CYS | 50 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.