Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes
Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >
| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 219 PM CDT Sat Jun 21 2025 |  |
Late This Afternoon: Southwest gales to 35 kt. Sunny. Waves 2 to 4 ft. Tonight: Southwest gales to 35 kt diminishing to 15 to 25 kt. clear. Waves 2 to 4 ft subsiding to 1 to 3 ft. Sunday: Southwest winds 15 to 25 kt increasing to 30 kt. sunny. Waves 1 to 3 ft. Sunday Night And Monday: Southwest winds 15 to 25 kt. Clear. waves 1 to 3 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
Visit your local NWS office at: https://www.weather.gov/lot |