Heat Advisories issued by 16 National Weather Service (NWS) forecast offices cover portions of 12 U.S. states from September 14 through September 16, 2026, with heat index values forecast to reach 46°C (114°F) in southern Texas. The advisories extend from Texas and Oklahoma through the Lower Mississippi Valley and Mid-South into Indiana and Kentucky.
Heat Advisories covered a broad corridor from the southern Plains and lower Mississippi Valley through the Midwest, Ohio Valley and parts of the Mid-Atlantic on September 1, 2026. National Weather Service (NWS) offices forecast heat indices from around 37.2°C (99°F) to 43°C (110°F), with several multi-day products citing limited overnight relief as a factor in maintaining the advisories.
At least six people have died after severe storms and flooding spread across Indiana beginning August 11, 2026, while major White River flooding forced evacuations and rescues across several counties. The National Weather Service said widespread flooding was affecting the White River late August 15, with major flooding at Noblesville and Nora and extensive flooding around Ravenswood near and north of Indianapolis. NWS described the flooding in parts of central Indiana as catastrophic.
At least six tornadoes were confirmed after a preliminary derecho swept from eastern Iowa through northern Illinois and into northern Indiana on August 11, 2026. Three EF1 tornadoes were confirmed in Delaware County, Iowa, while three additional tornadoes produced preliminary EF1-level damage in the Chicago area, with two continuing into Lake County, Indiana. The derecho produced a maximum measured gust of 160 km/h (99 mph) at Gary, Indiana.
At least two people died and more than 800 000 utility customers across Illinois, Indiana, Ohio and Kentucky were without power at 00:00 EDT on August 12 (04:00 UTC on August 12) after severe storms swept the Midwest and Ohio Valley on August 11, 2026. Sixteen incarcerated people were transported to hospitals for treatment after a reported lightning strike at an Ohio correctional facility. At least six tornadoes were confirmed in association with a system that the Storm Prediction Center preliminarily classified as a derecho, while additional rounds of storms brought destructive winds and flooding to Ohio.
The Storm Prediction Center (SPC) issued an Enhanced Risk of severe thunderstorms from northern Illinois into the Ohio Valley for August 11, 2026, with damaging winds the primary threat. A potentially organized mesoscale convective system moving southeast from Iowa could produce a swath of damaging gusts, including some above 120 km/h (75 mph), if it remains well organized.
Search for a missing 13-year-old boy in Lake Michigan ended on June 23, 2026 when responders recovered his body from 3.5 m (11 feet) of water, following an operation that left four divers injured amid dangerous water conditions prompting an overnight suspension of the search.
A tornado damaged the Park Place Apartments retirement community in Newburgh, Indiana, on June 21, 2026, as severe weather moved across portions of Illinois and Indiana.Among the hardest-hit locations was Newburgh, Indiana, where a tornado damaged part of a retirement community. The Storm Prediction Center received 37 tornado reports during the outbreak, while emergency crews responded to structural damage, downed trees, and transportation disruptions.
A Moderate Risk (Level 4 of 5) for severe thunderstorms has been issued for parts of Indiana and Illinois through June 17, 2026. Wind gusts of over 120 km/h (75 mph), damaging hail and multiple tornadoes are forecast across the region as the storm system moves through the Midwest.
Seven tornadoes, including two rated EF3, struck parts of Illinois and Indiana on June 11, 2026. The storms injured at least seven people, severely damaged 44 homes in Streator, caused minor damage to 35 others, and damaged at least 200 buildings in Merrillville.
