* WHAT...HEAT INDEX VALUES OF 100 TO 105 EXPECTED MONDAY AFTERNOONAND 95 TO 100 TUESDAY AFTERNOON. MONDAY NIGHT HEAT INDICES WILL REMAIN AROUND OR ABOVE 70 DEGREES, WHICH WILL STILL BE HAZARDOUS FOR ANYONE WITHOUT SHELTER AFTER THE HEAT MONDAY AFTERNOON.

* WHERE...PRICE, ASHLAND, BAYFIELD, IRON, AND SAWYER COUNTIES. THIS INCLUDES THE TRIBAL LANDS OF THE BAD RIVER RESERVATION, THE NORTHWESTERN AREA OF THE LAC DU FLAMBEAU BAND, THE LAC COURTE OREILLES RESERVATION AND THE RED CLIFF BAND. OTHER LOCATIONS INCLUDING MADELINE ISLAND AND THE APOSTLE ISLANDS NATIONAL LAKESHORE.

* WHEN...FROM 9 AM MONDAY TO 7 PM CDT TUESDAY.

* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT ILLNESSES.