Data source: National Weather Service (NWS)

Fire Weather

Red Flag Warning (WARNING) - expires September 10, 2026 at 8:00 AM EDT

Areas affected: Upper Snake River Valley/Idaho Falls BLM

Red Flag Warning issued September 9 at 11:39AM MDT until September 10 at 8:00PM MDT by NWS Pocatello ID

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 410\...

The National Weather Service in Pocatello has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from noon to 8 PM MDT Thursday.

• AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM.

• WINDS...Southwest 10 to 20 mph with gusts up to 35 mph.

• RELATIVE HUMIDITY...As low as 12 percent.

• IMPACTS...Existing or new fires could grow rapidly.

What to do: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho:

• Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain.

• Thunderstorm coverage of 25 percent, without specific rainfall criteria.

• Other high impact events deemed critical by the National Weather Service and area fire management agencies.

Source: NWS Pocatello ID

Source

Alert data provided by the National Weather Service (NWS). This page shows active alerts only and is refreshed daily. For real-time updates, visit weather.gov.