Fort Wayne, Indiana – Residents across northern Indiana should brace for multiple rounds of thunderstorms beginning Wednesday afternoon, with some severe weather possible. Dangerous heat index values, potentially reaching 105 degrees, will also arrive by Saturday.
According to the National Weather Service (NWS) Northern Indiana hazardous weather outlook issued at 2:12 PM EDT Tuesday, thunderstorms are expected this afternoon and tonight. More rounds of storms are likely Wednesday through Monday. The NWS indicates that severe storms are mainly possible Wednesday afternoon and evening. Spotter activation may be needed Wednesday afternoon to monitor these conditions.
The affected region includes northern Indiana, southwest Michigan, northwest Ohio, and the nearshore waters of southeastern Lake Michigan. Cities such as Fort Wayne, Elkhart, and South Bend in Indiana, along with St. Joseph, Michigan, and Defiance, Ohio, are all within the advisory area. Drivers should prepare for potential reduced visibility and slick roads during and after heavy downpours. Residents should secure outdoor items and stay updated on local alerts.
Beyond the immediate storm threat, high temperatures will grip the region. Afternoon heat index values are expected to climb to between 100 and 105 degrees from Saturday through Tuesday. This extreme heat poses a significant health risk, especially for vulnerable populations. Charge all electronic devices and ensure emergency kits are ready.
Here is the five-day forecast:
- Wednesday (June 18): High 87°F, Thunderstorms likely.
- Thursday (June 19 – Juneteenth): High 78°F, Mostly sunny.
- Friday (June 20): High 85°F, Mostly sunny.
- Saturday (June 21): High 90°F, Hot with a heat index up to 105°F.
- Sunday (June 22): High 93°F, Hot with a heat index up to 105°F.
Warnings remain in effect through Monday, with the focus shifting from severe weather to extreme heat by the weekend. Stay tuned for further advisories.




