* WHAT...Heat index values between 95 and 105 expected.

* WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming.

* WHEN...Until 8 PM MDT /9 PM CDT/ Tuesday.

* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. close

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 9 PM MDT SUNDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA, NORTHERN FOOT HILLS, EASTERN FOOT HILLS, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BUTTE COUNTY AREA, WEST CENTRAL PLAINS, BADLANDS AREA, NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY PLAINS, AND WESTON COUNTY PLAINS...

* AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, 322, 323, 324, 325, 326, 327, 329, and 332.

* TIMING...From 10 AM to 9 PM MDT Sunday.

* WINDS...Southeast winds 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...Relative Humidity between 8 to 18 percent.

* IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. close