Extreme Heat Warning: Treasure; Northern Rosebud; Northern Big Horn; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northeastern Yellowstone; Southwestern Yellowstone

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Extreme Heat Warning — Treasure; Northern Rosebud; Northern Big Horn; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northeastern Yellowstone; Southwestern Yellowstone Severity: Severe. Certainty: Likely. * WHAT...Very hot daytime temperatures combined with warm overnight lows will produce cumulative heat stress. * WHERE...Portions of south central and southeast Montana. * WHEN...Until midnight MDT Tuesday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot conditions with high temperatures of 98 to 105 today and Tuesday. Overnight lows will remain well above normal providing only limited relief.