Extreme Heat Warning

* WHAT...For the Extreme Heat Warning, dangerously hot overnight conditions with temperatures in the low 70s. For the Lake Wind Advisory, northwest winds 10 to 20 mph with gusts up to 35 mph.

* WHERE...McCone County including Fort Peck Lake.

* WHEN...Until 6 PM MDT this evening.

* IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Wave heights up to 3 feet expected.