561
WWUS85 KCYS 040721
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
121 AM MDT Mon Aug 4 2025

...MULTI-DAY CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS
WEEK WITH LITTLE OVERNIGHT RELIEF...

.A multi-day critical fire weather event is expected this week
due to low RH values into the teens and single digits, alongside
poor overnight recoveries and gusty winds. Overnight recoveries
may rise a little higher or winds a bit less breezy on some days,
but overall conditions will be poor for a majority of the week.

WYZ420-421-427>429-050000-
/O.EXB.KCYS.FW.W.0017.250805T1800Z-250806T0000Z/
/O.EXT.KCYS.FW.A.0010.250806T0000Z-250809T0000Z/
North Laramie Valley/Shirley Basin-
Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills-
Southern Laramie Valley-Southern Laramie Range-
121 AM MDT Mon Aug 4 2025

...RED FLAG WARNING IN EFFECT FROM NOON TO 6 PM MDT TUESDAY FOR
LOW RH, POOR OVERNIGHT RECOVERY, AND GUSTY WINDS FOR FIRE WEATHER
ZONES 422, 423, 424, 425, AND 426...
...FIRE WEATHER WATCH NOW IN EFFECT FROM TUESDAY EVENING THROUGH
FRIDAY AFTERNOON FOR LOW RH, POOR OVERNIGHT RECOVERY, AND GUSTY
WINDS FOR FIRE WEATHER ZONES 420, 421, 427, 428, AND 429...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from noon to 6 PM MDT Tuesday.

* AFFECTED AREA...Fire weather zones 420, 421, 427, 428, and
  429.

* WIND...Gusting 20-30 mph, isolated gusts 35-40 mph.

* HUMIDITY...5 to 15 percent; overnight recoveries 25 to 40
  percent.

* 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
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

WYZ422>426-050000-
/O.CON.KCYS.FW.W.0017.250804T1800Z-250809T0000Z/
Central and West Carbon-Southwest Carbon County-
Sierra Madre Range/Medicine Bow NF-Upper North Platte River Basin-
Snowy Range/Medicine Bow NF-
121 AM MDT Mon Aug 4 2025

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 6 PM MDT
FRIDAY FOR LOW RH, POOR OVERNIGHT RECOVERY, AND GUSTY WINDS FOR
FIRE WEATHER ZONES 422, 423, 424, 425, AND 426...

* AFFECTED AREA...Fire weather zones 422, 423, 424, 425, and
  426.

* WIND...Gusting 20-30 mph, isolated gusts 35-40 mph.

* HUMIDITY...5 to 15 percent; overnight recoveries 25 to 40
  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.

&&

$$