297
FLUS43 KDVN 300924
HWODVN
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
424 AM CDT TUE JUN 30 2026
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-011100-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
424 AM CDT TUE JUN 30 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.
DAY ONE
TODAY AND TONIGHT
DANGEROUS LEVELS OF HEAT WILL OCCUR AGAIN TODAY WITH HEAT INDEX
VALUES OF 105 DEGREES OR EVEN HIGHER THIS AFTERNOON. IN ADDITION,
OVERNIGHT TEMPERATURES WILL REMAIN WARM, LIMITING RELIEF FROM THE
HEAT TONIGHT AND IN THE NIGHTS AHEAD. AN EXTREME HEAT WARNING
REMAINS IN EFFECT FOR THE ENTIRE AREA.
THERE IS A LOW CHANCE FOR A FEW THUNDERSTORMS TO EFFECT THE
HIGHWAY 20 CORRIDOR LATE TONIGHT INTO EARLY WEDNESDAY MORNING.
DAYS TWO THROUGH SEVEN
WEDNESDAY THROUGH MONDAY
THE DANGEROUS COMBINATION OF HOT AND VERY HUMID CONDITIONS WILL
CONTINUE THROUGH AT LEAST WEDNESDAY AND POTENTIALLY LONGER. PEAK
HEAT INDEX VALUES BETWEEN 100 AND 110 DEGREES ARE LIKELY WEDNESDAY,
ALONG WITH VERY WARM NIGHTTIME LOWS. DEPENDING ON STORMS AND
ASSOCIATED CLOUD COVER, THE IMPACTFUL HEAT MAY CONTINUE THROUGH
THE END OF THE WEEK. AN EXTREME HEAT WARNING REMAINS IN EFFECT
THROUGH WEDNESDAY EVENING.
THERE IS A CHANCE FOR THUNDERSTORMS THROUGHOUT THE LATTER HALF OF
THE WEEK AND INTO THE 4TH OF JULY WEEKEND. STRONG STORMS MAY BE
POSSIBLE ACROSS PORTIONS OF NORTHEAST IOWA INTO EXTREME NORTHWEST
ILLINOIS WEDNESDAY NIGHT INTO THURSDAY MORNING. AREAS GENERALLY
NORTHWEST OF A LINE FROM IOWA CITY, TO FREEPORT ILLINOIS ARE IN A
MARGINAL, OR LEVEL 1 OUT OF 5 RISK FOR SEVERE WEATHER WEDNESDAY
NIGHT. THE ENTIRE AREA IS IN A MARGINAL RISK FOR SEVERE WEATHER ON
THURSDAY. THE PRIMARY THREATS WILL BE DAMAGING WINDS AND LARGE
HAIL.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY AND TONIGHT.
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