Expected

* WHAT...Dangerously hot conditions with multiple days of Major to Extreme Heat Risk. * WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert Slopes. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially those with little overnight relief from the heat. * ADDITIONAL DETAILS...Dangerously hot conditions with high temperatures up to 112 degrees. Overnight lows will range from 75-80 degrees.

* WHAT...Dangerously hot conditions with temperatures up to 110 expected, with some locations in the St George area nearing 112. Little overnight relief will occur through Saturday. * WHERE...Glen Canyon Recreation Area/Lake Powell, Lower Washington County, and Zion National Park. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with temperatures up to 103 expected with little overnight relief through Sunday. * WHERE...Castle Country, San Rafael Swell, Western Millard and Juab Counties, Great Salt Lake Desert and Mountains, Northern Wasatch Front, Salt Lake Valley, and Tooele and Rush Valleys. * WHEN...From noon Friday to midnight MDT Sunday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of

* WHAT...Dangerously hot conditions with temperatures up to 105 expected with little overnight relief through Saturday. * WHERE...Capitol Reef National Park and Vicinity, South Central Utah, and Western Canyonlands. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car

The National Weather Service in Great Falls has issued a Red Flag Warning for hot temperatures, gusty winds, and low relative humidity, which is in effect from noon Friday to 9 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Lincoln Ranger District of the Helena National Forest, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...West 10 to 15 mph with gusts up to 30 mph.

A dry cold front will push toward and through the area Friday and Saturday, bringing breezy west to southwesterly winds. Winds will be strongest near the Cascades and Western Columbia Basin. Wind speeds on Friday and Saturday will be similar, though winds on Saturday becoming more widespread in the eastern Columbia Basin. Combined with low afternoon relative humidity values, poor to fair humidity recoveries at night, hot temperatures and dry

* WHAT...Dangerously hot conditions with temperatures of 100 to 109 expected. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with high temperatures of 108 to 114 expected. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...High temperatures 100 to 103 degrees in the valleys each afternoon. Low temperatures 60 to 65 degrees in the valleys each night. This will result in a major risk for heat-related illnesses for much of the population, especially those without effective cooling. * WHERE...Humboldt County. * WHEN...For the Heat Advisory, until 6 AM PDT Friday. For the Extreme Heat Warning, from 6 AM to 11 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat.

* WHAT...High temperatures 100 to 105 degrees in the valleys each afternoon. Low temperatures 62 to 70 degrees in the valleys each night. This will result in a major risk for heat-related illnesses for much of the population, especially those without effective cooling. * WHERE...Northern Lander and Northern Eureka, Southern Lander and Southern Eureka, Southwest Elko, Northeastern Nye, and Northwestern Nye Counties. * WHEN...For the Heat Advisory, until 6 AM PDT Friday. For the