Excessive Heat Watch for Stephenson County

The NWS office out of the Quad Cities has issued an excessive heat watch for Stephenson, Jo Daviess, Caroll, and Whiteside counties for Sunday afternoon through Tuesday evening. It's likely that some sort of heat headline will be issued for other Stateline counties out of the NWS in Chicago, so stand by for that. Here's the advisory from the NWS Quad Cities:

...A PROLONGED PERIOD OF EXCESSIVE HEAT AND HUMIDITY...

HOT AND HUMID CONDITIONS ARE EXPECTED TO SPREAD OVER THE AREA
EARLY THIS WEEKEND AND REMAIN IN PLACE AT LEAST THROUGH THE MIDDLE OF NEXT WEEK. TEMPERATURES IN THE 90S WILL BE ACCOMPANIED BY HIGH HUMIDITY/S RESULTING IN A HEAT INDEX OF 100 TO 110. LITTLE RELIEF FROM THE HEAT WILL OCCUR AT NIGHT SINCE LOW TEMPERATURES WILL BE IN THE 70S. THE OPPRESSIVE CONDITIONS WILL DEVELOP SOUTH OF INTERSTATE 80 SATURDAY AND THEN WILL SPREAD OVER THE REST OF THE AREA SUNDAY.


...EXCESSIVE HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH TUESDAY EVENING...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED AN
EXCESSIVE HEAT WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH TUESDAY EVENING.



* TIMING...OPPRESSIVE CONDITIONS WILL DEVELOP SUNDAY AND CONTINUE AT LEAST THROUGH TUESDAY. IT IS POSSIBLE THAT THE HIGH HEAT AND HUMIDITY COULD LAST INTO THE END OF THE WEEK
* HEAT INDEX/TEMPERATURE...AFTERNOON TEMPERATURES IN THE LOWER TO MIDDLE 90S COMBINED WITH HIGH HUMIDITY/S WILL CREATE A HEAT INDEX OF 105 TO 110. NIGHT TIME LOWS WILL BE IN THE 70S...OFFERING LITTLE RELIEF FROM THE HEAT.

* IMPACTS...THE PROLONGED PERIOD OF EXCESSIVE HEAT AND HUMIDITY
WILL INCREASE THE RISK OF HEAT RELATED ILLNESSES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN EXCESSIVE HEAT WATCH MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES AND HIGH HUMIDITY IS POSSIBLE. THIS COMBINATION COULD CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. MONITOR LATER FORECASTS FOR UPDATED INFORMATION.