Severe · Red Flag WarningActive alert

Red Flag Warning issued September 17 at 1:42PM MDT until September 17

Affecting Northern Boise National Forest; Southern Boise/Western Sawtooth NF, including the Camas Prairie

In effect until: Sep 18, 2026, 1:00 PM

Northern Boise National Forest; Southern Boise/Western Sawtooth NF, including the Camas Prairie

Likely impact in Southern Boise/Western Sawtooth NF, including the Camas Prairie; effects through 1:00 PM.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will occur shortly. A Fire Weather Watch means that critical fire weather conditions are possible. Listen for later forecasts and possible Red Flag Warnings.

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Read the original bulletin (official text)

...SCATTERED THUNDERSTORMS WITH GUSTY WINDS AND LITTLE RAINFALL...

A strong low pressure system in northeastern California will
bring scattered thunderstorms this afternoon and evening with
outflow wind gusts up to 50 mph and little rainfall. As the low
moves into southeastern Oregon late tonight and southwestern
Idaho on Friday, scattered thunderstorms will develop again,
especially on the Idaho side.

The National Weather Service in Boise has issued a Fire Weather
Watch for winds and low relative humidities, which is in effect
from late tonight through Friday evening.

* AFFECTED AREA...In Idaho, Fire Weather Zones 403 Northern
Boise National Forest, 421 Southern Boise/Western Sawtooth NF
and including the Camas Prairie.

* TIMING...For the Red Flag Warning, until 9 PM MDT this
evening. For the Fire Weather Watch, from late tonight through
Friday evening.

* WINDS...For the Fire Weather Watch, Northwest 5 to 10 mph with
gusts up to 25 mph.

* RELATIVE HUMIDITY...For the Fire Weather Watch, 39 to 53
percent.

* TEMPERATURES...For the Fire Weather Watch, 56 to 68 degrees.

* THUNDERSTORMS...Scattered coverage with abundant lightning.

* OUTFLOW WINDS...Gusty erratic winds up to 50 mph.

* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.

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

Red Flag Warning issued September 17 at 1:42PM MDT until September 17

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