Lemhi County, ID

Alerts

Warning Area
County Line

Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.

In effect from Monday 07/27 12:00 PM MDT – Monday 07/27 9:00 PM MDT

Issued by NWS Pocatello ID

Increasing wind over the Salmon-Challis Monday

.High pressure over central Idaho will continue, but wind aloft will increase over this area and bring stronger wind to locations that already have low afternoon and early evening humidity. The wind is not expected to last into Tuesday.

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 9 PM MDT Monday.

Affected Area

Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. For Fire Weather Zone 475, the risk is mainly a line from Skull Gulch RAWS to Ezra Creek RAWS to the south. For Fire Weather Zone 476, the risk is mainly on mid- slopes and ridges that are exposed to the stronger wind.

Winds

Southwest 10 to 20 mph with gusts up to 30 mph.

Relative Humidity

As low as 13 percent.

Impacts

Moderate wind and very low humidity can lead to rapid spread of fire and more intense fire in receptive fuels.

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.

Areas Impacted

  • East Salmon River Mountains/Salmon NF
  • Lemhi and Lost River Range/Challis NF

Briefings

No recent briefing available

From the Forecaster

Wildfire Smoke and Hot

Created by the NWS Missoula WFO

Dry conditions are expected to persist across the Northern Rockies for the foreseeable future. With deep southwesterly flow transporting smoke from active fires in Washington and Oregon, air quality will likely remain poor, and it may get worse before it gets better. We remain locked into a synoptic setup featuring elevated fire weather conditions. Specifically hot, dry, and breezy weather. This pattern continues to stream smoke into the region, degrading air quality and reducing visibility. - Stay cool and limit outdoor exposure when smoke is thickest. - Check in on vulnerable neighbors, friends, and family, especially those without air conditioning or with respiratory ailments. - Always check the back seat for pets or children.

A split-screen graphic. The left side has a tan background with rust-colored boxes containing white text that reads "Hot & Smoky Northern Rockies - for the foreseeable future". It lists impacts: "Degraded Air Quality - Most susceptible: young, elderly, those with respiratory ailments," "Decreased Visibility - Aviation, Periodic impacts to road travel," and "Hot Weather Reminders: Always check the back seat, and never leave pets or children in cars. Drink plenty of fluids, avoid strenuous activity during the hottest part of the day." The right side shows a satellite image of the Western US with white arrows pointing to thick smoke plumes moving into the region, labeled "Increasingly active wildfires in Oregon and Washington". The NWS Missoula logo and text are at the bottom.
Missoula Area Forecast Discussion

Seven-day Weather Risk Overview

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Weather Forecasting Office

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