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WHAT: Dangerously hot conditions with high temperatures of 104 to 112 today. Some all time record highs could be broken. Temperatures will cool slightly to 95 to 104 Monday.
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WHERE: Portions of central, south central, and southeast Montana and north central Wyoming.
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WHEN: Until midnight MDT Monday Night.
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IMPACTS: Heat related illnesses increase significantly during extreme heat events.
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ADDITIONAL DETAILS: Extremely hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration.
* WHAT...Dangerously hot conditions with high temperatures of 104 to 112 today. Some all time record highs could be broken. Temperatures will cool slightly to 95 to 104 Monday. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...Until midnight MDT Monday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Extremely hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, plan outdoor activities during the early morning and late evening hours, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
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IMPACTS: Low humidities, very hot temperatures, and strong gusty winds will create erratic fire behavior.
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AFFECTED AREA: In North Central WY Fire Zone,274. In South Central MT Fire Zones,123,124,125,126,127 128,129. In Southeast MT Fire Zones,130,131,132. In Southeast MT and Northwest SD Fire Zone,133.
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COUNTIES AFFECTED: In Central MT,Golden Valley,Musselshell,Wheatland. In North Central WY,Sheridan. In Northwest SD,Harding. In South Central MT,Big Horn,Carbon,Park,Stillwater Sweet Grass,Yellowstone. In Southeast MT,Carter,Custer,Fallon,Powder River Rosebud,Treasure. In Southwest MT,Gallatin.
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WIND: South 10 to 20 mph with gusts to 35 mph.
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HUMIDITY: Minimums of 5 to 10 percent.
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TEMPERATURES: Highs of 105 to 112.
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COLD FRONT: Arrives over western zones this evening, bringing a shift to breezy northwest winds. The front will reach far southeast Montana Monday morning. Before the frontal passage, a southeasterly low level jet will produce gusty ridgetop winds (to 40 mph) and a slow humidity recovery over SE Montana tonight.
* IMPACTS: Low humidities, very hot temperatures, and strong gusty winds will create erratic fire behavior. * AFFECTED AREA: In North Central WY Fire Zone...274. In South Central MT Fire Zones...123...124...125...126...127 128...129. In Southeast MT Fire Zones...130...131...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In North Central WY...Sheridan. In Northwest SD...Harding. In South Central MT...Big Horn...Carbon...Park...Stillwater Sweet Grass...Yellowstone. In Southeast MT...Carter...Custer...Fallon...Powder River Rosebud...Treasure. In Southwest MT...Gallatin. * WIND: South 10 to 20 mph with gusts to 35 mph. * HUMIDITY: Minimums of 5 to 10 percent. * TEMPERATURES: Highs of 105 to 112. * COLD FRONT: Arrives over western zones this evening, bringing a shift to breezy northwest winds. The front will reach far southeast Montana Monday morning. Before the frontal passage, a southeasterly low level jet will produce gusty ridgetop winds (to 40 mph) and a slow humidity recovery over SE Montana tonight.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
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