The National Weather Service has issued an Excessive Heat Warning effective from Sunday afternoon through Monday evening for the following counties, Buena Vista, Cherokee, Clay, Ida, OBrien, Plymouth, Sioux, Woodbury, Adair, Adams, Audubon, Carroll, Cass, Crawford, Guthrie, Ringgold, Sac, Taylor, Union, Fremont, Harrison, Mills, Monona, Montgomery, Page, Pottawattamie and Shelby. There is also an Excessive Heat Watch effective from Sunday Afternoon to Monday evening for the following counties, Appanoose, Boone, Calhoun, Cerro Gordo, Clarke, Dallas, Decatur, Emmet, Franklin, Greene, Hamilton, Hancock, Hardin, Humboldt, Jasper, Kossuth, Lucas, Madison, Marion, Marshall, Monroe, Palo Alto, Pocahontas, Polk, Story, Warren, Wayne, Webster, Winnebago, Worth and Wright. There is also a Heat Advisory in effect for Dickinson, Lyon and Osceola Counties.

* TEMPERATURE: TEMPERATURES IN THE MID 90S WITH DEWPOINTS AROUND 80 SUNDAY AND MONDAY WILL CREATE HEAT INDEX VALUES OF 110 TO 115 DEGREES EACH DAY…WITH NIGHTTIME HEAT INDEX VALUES AROUND 75.

* IMPACTS: THE CUMULATIVE EFFECT OF THE HEAT…WITH LITTLE NIGHTTIME RELIEF COULD LEAD TO HEAT EXHAUSTION OR HEAT STROKE WITH PROLONGED EXPOSURE.

* THE ONLY RELIEF FROM THE EXTREME HEAT MIGHT BE FROM THUNDERSTORMS WHICH ARE POSSIBLE…ESPECIALLY AT NIGHT. ANY RELIEF WILL BE TEMPORARY. THE EXTREME HEAT AND HUMIDITY MAY CONTINUE INTO TUESDAY AND POSSIBLY WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF
DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF FLUIDS…STAY IN AN AIR-CONDITIONED ROOM…STAY OUT OF THE SUN…AND CHECK UP ON RELATIVES AND NEIGHBORS.