Expected

* WHAT...For the Heat Advisory, high temperatures of 100 to 105 degrees with overnight lows of 64 to 72 degrees. Widespread Major (level 3 out of 4) HeatRisk across lower valleys. For the Extreme Heat Warning, high temperatures of 101 to 106 degrees with overnight lows of 67 to 74 degrees. Widespread Major (level 3 out of 4) HeatRisk and isolated Extreme HeatRisk (level 4 out of 4) in lower valleys. * WHERE...Western Nevada Basin and Range including Pyramid Lake.

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY...Fire Weather Zone 288. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs around 80.

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283...289...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater.

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph.

The dust storm which prompted the warning has weakened and exited the area. Therefore, the Dust Storm Warning will be allowed to expire.

At 1225 AM MST, a wall of dust was located along a line from 9 miles southwest of Topawa to 15 miles northeast of Santa Rosa, moving west at 15 mph. HAZARD...Less than a quarter mile visibility with damaging winds in excess of 60 mph. SOURCE...Detected by National Weather Service meteorologists. IMPACT...Dangerous life-threatening travel. Locations impacted include... Sells, Topawa, Gu Oidak, Vamori, Cowlic, No:ligk, Cababi, Comobabi, Sil Nakya, San Luis - Sells District, Artesia, Rincon and Itak.

* 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...Dangerously hot conditions with high temperatures of 100 to 110 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...High temperatures 100 to 105 degrees in the valleys each afternoon. Low temperatures 73 to 78 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...South Central Elko and Southeastern Elko Counties. * WHEN...From 11 AM PDT this morning until 11 PM PDT Sunday evening. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events.

* IMPACTS: Low humidities, hot temperatures, gusty winds, and a wind shift with a cold front will create erratic fire behavior. * AFFECTED AREA: In Southeast MT Fire Zone...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Northwest SD...Harding. In Southeast MT...Carter...Custer...Fallon. * COLD FRONT: A cold front will move through Thursday afternoon and evening shifting winds out of the northwest and increasing wind speeds. * WIND: West 10 to 20 mph with gusts up to 30 mph.