Expected

* WHAT...Dangerously hot conditions with heat index values up to 107. * WHERE...Portions of south central and southeast South Dakota. * WHEN...Until 8 PM CDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity 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 interiors will reach lethal temperatures in a matter of minutes.

* WHAT...Dangerously hot conditions with heat index values up to 108. * WHERE...Portions of northwest and west central Iowa, northeast Nebraska, and south central and southeast South Dakota. * WHEN...Until 8 PM CDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity 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

* WHAT...Dangerously hot temperatures with highs in the mid 90s to low 100s. * WHERE...Northern Phillips and Northern Valley Counties. * WHEN...Until 10 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Overnight lows in the mid 60s to upper 60s will offer little relief while sleeping. 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 temperatures with highs in the mid 90s to around 100. * WHERE...Daniels and Sheridan Counties. * WHEN...Until 10 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Overnight lows in the mid 60s to upper 60s will offer little relief while sleeping. 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 temperatures with highs in the mid 90s to mid 100s. * WHERE...Most of Northeast Montana. * WHEN...Until 10 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Overnight lows in the mid 60s to mid 70s will offer little relief while sleeping. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

...RED FLAG WARNING FOR STRONG WINDS AND LOW HUMIDITY SATURDAY FOR MUCH OF THE INLAND NORTHWEST... * Affected Area: Colville Reservation (Zone 702), Okanogan Valley (Zone 703), Foothills of Central Washington Cascades (Zone 705), Waterville Plateau (Zone 706) and Western Columbia Basin (Zone 707). * Winds: West/Southwest winds 15 to 30 mph with gusts around 30 to 45 mph. * Relative Humidities: 14 to 23 percent. * Impacts: Gusty winds and low humidity Saturday may lead to

...RED FLAG WARNING FOR STRONG WINDS AND LOW HUMIDITY SATURDAY FOR MUCH OF THE INLAND NORTHWEST... * Affected Area: Northern and Central Idaho Panhandle (Zone 101), Foothills of Northeast Washington (Zone 701), Eastern Columbia Basin -Palouse -Spokane Area (Zone 708) and Lower Palouse -Snake River (Zone 709). * Winds: West/Southwest winds 10 to 25 mph with gusts up to 35 mph. Highest wind speeds on the West Plains, Eastern Columbia Basin, and foothills of the Blue Mountains. * Relative Humidities: 14 to 26 percent.

...RED FLAG WARNING FOR STRONG WINDS AND LOW HUMIDITY SATURDAY FOR MUCH OF THE INLAND NORTHWEST... * Affected Area: Okanogan Highlands and Kettle Mountains (Zone 699), Selkirk Mountains of Northeast Washington (Zone 700) and Methow Valley (Zone 704). * Winds: Southwest winds 10 to 20 mph with gusts around 20 to 30 mph. Winds shifting northwesterly Saturday evening for the Methow Valley. * Relative Humidities: 15 to 24 percent. * Impacts: Gusty winds and low humidity Saturday may lead to

* WHAT...For the Heat Advisory, heat index values up to 102. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 115 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 106 possible. * WHERE...Floyd and Mitchell Counties. * WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the Extreme Heat Warning, from noon to 9 PM CDT Sunday. For the Extreme Heat Watch, from Sunday evening through Monday evening.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values of 105 are possible. * WHERE...In Iowa, Allamakee, Chickasaw, Clayton, Fayette, Howard, and Winneshiek Counties. In Wisconsin, Crawford, Grant, Richland, and Vernon Counties. * WHEN...For the Extreme Heat Warning, from noon to 9 PM CDT Sunday. For the Extreme Heat Watch, from Sunday evening through Monday evening.