Severe · Red Flag WarningActive alert

Red Flag Warning issued September 8 at 11:49AM MDT until September 10

Affecting Natrona County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain

In effect until: Sep 9, 2026, 1:00 PM

Natrona County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain

Likely impact; effects through 1:00 PM.

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.

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* IMPACTS: Low Humidities...Strong Gusty Winds...and Wind Shift
with a Cold Front could cause erratic fire behavior.

* AFFECTED AREA:
In Central WY...Fire Weather Zones 280...289 and 300.

* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.

* COLD FRONT: Winds turn northerly after sunset Tuesday, as a dry cold
front comes down from the north.

* WIND: Tuesday, west to southwest 15 to 25 mph with gusts up to 35
mph. Wednesday, west to southwest 10 to 20 mph with gusts to
around 25 mph. Thursday, west to southwest 15 to 25 mph with
gusts up to 45 mph.

* HUMIDITY: Tuesday, 10 to 18 percent. Wednesday and Thursday, as
low as 6 percent.

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Red Flag Warning issued September 8 at 11:49AM MDT until September 10

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