Extreme heat, critical fire weather

    Extreme heat, critical fire weather

    HEAT ADVISORY remains posted for the Missoula, Mission, Bitterroot and Flathead Valleys west to the Idaho border. Highs in the upper 90s to lower 100s.

    FIRE WEATHER WARNING for all forested areas of NBC Montana through Saturday. Daytime highs will be in the 90s to lower 100s, with humidity values below 20%. Westerly winds will increase in advance of a cold front. Wind gusts up to 25 and 35 mph will be possible this afternoon and Saturday. The Haines index is a 6 which is the highest it can go. A Haines index of 6 means a high potential for and existing fire to become large or exhibit erratic fire behavior. Fire danger is extreme across a large part of western Montana.

    High pressure is dominating the northern Rockies bringing a heat wave to NBC Montana. Highs in the mid 90s to lower 100s Friday and the 90s Saturday. Many areas will break or tie daily temperature records. As temperatures rise the threat of heat exhaustion will increase. Make sure to drink plenty of water and avoid any unnecessary strenuous activity during the hottest times of the day. Also, continue to monitor air quality. Air quality will fluctuate between moderate and unhealthy of sensitive groups.

    Tonight lows will drop into the 50s and 60s.

    A dry cold front will bring gutsy winds and cooler air to the region late this weekend. Highs will be the 80s Sunday through early next week.

    This weekend, the Perseid Meteor Shower will be visible. Visibility maybe be impacted by smoke.

    Fire danger is EXTREME in the Flathead National Forest and Missoula County. Fire danger remains at MODERATE in the Helena National Forest and the Lewis and Clark National Forest. Fire danger is HIGH in the Beaverhead-Deerlodge National Forest, Yellowstone Park, and the Gallatin National Forest. Fire Danger is VERY HIGH in the Kootenai National Forest, the Bitterroot National Forest and the Lolo National Forest.

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