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Wildfire Aware Situation Report: SATURDAY | SEPTEMBER 16, 2023

Updated: Sep 22, 2023

Wildfire Aware Situation Report for SATURDAY | SEPTEMBER 16, 2023, for the United States.

The United States is at National Preparedness Level 3.

There is 1 new large fire in Montana.

  • Lupine (MT): Lolo NF, USFS. Twenty-six miles west of Missoula, MT. Heavy slash and timber. Moderate fire behavior with flanking, backing and torching.

1 large fire was contained in Arizona.

  • Swisshelm (AZ)

There are a total of 46 UNCONTAINED LARGE FIRES currently.

Nationally, 33 fires are being managed under a strategy other than full suppression.

Wildfire Aware Situation Report: Weather Discussion

Provided by the National Interagency Fire Center

An upper-level trough moving into western Canada and an upper low approaching northern California will shift and breakdown the ridge over the Northwest and northern California. Gusty Cascade Gap winds are likely, and temperatures will remain above normal across the northwestern US, with minimum relative humidity of 5-25% from the Desert Southwest through much of the western and northern Great Basin, Inland Northwest, Idaho, and Montana. Gusty downslope winds are also likely in north-central Montana in the lee of the northern Rockies. Isolated mixed wet and dry thunderstorms are likely in portions of the central and northern Sierra, northwest California, and southwest Oregon, especially over the mountains. Hurricane Lee will weaken to a Tropical/Post Tropical Storm and make landfall on the Maine, Nova Scotia, or New Brunswick coast. Storm surge of 1-3 feet is forecast from Long Island northward through the New England coast, and wind gusts of 30-70 mph are expected for eastern New England, with gusts of 20-45 mph for the rest of New England. Heavy rain will fall over much of Maine, especially eastern Maine, as well. Scattered to widespread showers and thunderstorms will continue in the southern Rockies and Plains through the Gulf Coast and Florida into the central Appalachians. Showers and thunderstorms are also likely from the Great Lakes extending southwest into the central Plains along a cold front.

There are multiple Fire Weather Watches and Red Flag Warnings from Western Washington to Northeastern Montana. The Storm Prediction Center has identified areas of concern for Isolated Thunderstorms over northwestern California.

If you would like to become Wildfire Aware, download the Wildfire Aware app in your App Store today and receive notifications about new fires, ongoing fires, and National Weather Service alerts as they happen near the areas you care about.

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