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Fort Wayne Warnings, Watches and Advisories

SAFETY and DATA MESSAGE

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Fort Wayne.

Use the Radar Maps link provided to understand the trajectory of a storm.

NWS Active Alerts for IN - Map View

State: IN Total alerts: 8 Updated: Sep 4, 2026 9:50am EDT

Heat Advisory

Area
Carroll; Warren; Tippecanoe; Clinton; Howard; Fountain; Montgomery; Boone; Tipton; Hamilton; Madison; Delaware; Randolph; Vermillion; Parke; Putnam; Hendricks; Marion; Hancock; Henry; Vigo; Clay; Owen; Morgan; Johnson; Shelby; Rush; Sullivan; Greene; Monroe; Brown; Bartholomew; Decatur; Knox; Daviess; Martin; Lawrence; Jackson; Jennings
Heat Advisory issued September 4 at 8:29AM EDT until September 4 at 8:00PM EDT by NWS Indianapolis IN

* WHAT...Heat index values up to 108. * WHERE...All central Indiana counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory

Area
Winnebago; Boone; McHenry; Lake; Ogle; Lee; De Kalb; Kane; DuPage; Kendall; Northern Cook; Central Cook; Southern Cook; Northern Will; Southern Will; Eastern Will; Lake; Porter
Heat Advisory issued September 4 at 2:54AM CDT until September 4 at 10:00PM CDT by NWS Chicago IL

* WHAT...Peak heat index values this afternoon of 100 to locally 110 degrees. * WHERE...Portions of north central and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory

Area
La Salle; Grundy; Kankakee; Livingston; Iroquois; Ford; Newton; Jasper; Benton
Heat Advisory issued September 4 at 2:54AM CDT until September 4 at 10:00PM CDT by NWS Chicago IL

* WHAT...Peak heat index values this afternoon of 100 to locally 110 degrees. * WHERE...In Illinois, Livingston, Ford, Iroquois, La Salle, Grundy, and Kankakee Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory

Area
Wayne; Fayette; Union; Franklin; Ripley; Dearborn; Ohio; Switzerland; Carroll; Gallatin; Boone; Kenton; Campbell; Owen; Grant; Pendleton; Bracken; Robertson; Mason; Lewis; Darke; Miami; Clark; Madison; Franklin; Preble; Montgomery; Greene; Fayette; Pickaway; Fairfield; Butler; Warren; Clinton; Ross; Hocking; Hamilton; Clermont; Brown; Highland; Adams; Pike; Scioto
Heat Advisory issued September 4 at 1:49AM EDT until September 4 at 8:00PM EDT by NWS Wilmington OH

* WHAT...Afternoon heat index values of 100 to 105 expected. * WHERE...Portions of east central and southeast Indiana, northeast and northern Kentucky, and central, south central, southwest, and west central Ohio. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory

Area
Elkhart; Lagrange; Steuben; Noble; De Kalb; Starke; Marshall; Whitley; Allen; Wabash; Huntington; Wells; Adams; Grant; Blackford; Jay; Northern La Porte; Eastern St. Joseph; Northern Kosciusko; Southern La Porte; Western St. Joseph; Southern Kosciusko; Defiance; Henry; Paulding; Putnam; Van Wert; Allen
Heat Advisory issued September 4 at 1:46AM EDT until September 4 at 8:00PM EDT by NWS Northern Indiana

* WHAT...Heat index values up to around 100 degrees. * WHERE...Portions of northern Indiana and northwest Ohio. * WHEN...Until 8 PM EDT /7 PM CDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory

Area
Pulaski; Fulton; White; Cass; Miami
Heat Advisory issued September 4 at 1:46AM EDT until September 4 at 8:00PM EDT by NWS Northern Indiana

* WHAT...Heat index values up to around 100 degrees. * WHERE...Cass IN, Fulton IN, Miami, Pulaski, and White Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Extreme Heat Warning

Area
Jefferson; Wayne; Edwards; Wabash; Perry; Franklin; Hamilton; White; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Gibson; Pike; Posey; Vanderburgh; Warrick; Spencer; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Henderson; Daviess; McLean; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid
Extreme Heat Warning issued September 4 at 12:42AM CDT until September 5 at 8:00PM CDT by NWS Paducah KY

* WHAT...Dangerously hot conditions with heat index values 105 to 110. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...Until 8 PM CDT /9 PM EDT/ Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Overnight low temperatures in the mid 70s will provide little relief from the heat.

Heat Advisory

Area
Orange; Washington; Scott; Jefferson; Dubois; Crawford; Perry; Harrison; Floyd; Clark; Hancock; Breckinridge; Meade; Ohio; Grayson; Hardin; Bullitt; Jefferson; Oldham; Trimble; Henry; Shelby; Franklin; Scott; Harrison; Spencer; Anderson; Woodford; Fayette; Bourbon; Nicholas; Nelson; Washington; Mercer; Jessamine; Clark; Larue; Marion; Boyle; Garrard; Madison; Butler; Edmonson; Hart; Green; Taylor; Casey; Lincoln; Logan; Warren; Simpson; Allen; Barren; Monroe; Metcalfe; Adair; Russell; Cumberland; Clinton
Heat Advisory issued September 4 at 12:27AM EDT until September 5 at 8:00PM EDT by NWS Louisville KY

* WHAT...Heat index values between 100 and 107. Limited nighttime relief as low temperatures are only expected to fall into the low-to-mid 70s. * WHERE...Portions of south central Indiana and north central, northwest, and south central Kentucky. * WHEN...Until 8 PM EDT /7 PM CDT/ Saturday. * IMPACTS...Prolonged hot temperatures and high humidity may cause heat illnesses.

For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.

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