Strong tornadoes, giant hail possible for 6 million Michiganders, timeline is clear cut

Key Points:

• The Storm Prediction Center has issued a level 3 severe weather risk for the most populated areas of southern Michigan, including Muskegon, Grand Rapids, Lansing, Ann Arbor, Detroit, and Flint, due to the potential for damaging hail, strong tornadoes, and severe wind gusts this evening.
• There is a 5-9% chance of tornadoes within 25 miles of any point in southwest, south-central, and southeast Lower Michigan, with the possibility of strong EF-2 tornadoes; initial storms in Iowa, Wisconsin, and northern Illinois could produce tornadoes up to EF-3 strength.
• Severe thunderstorms are expected to develop near Madison, Wisconsin, in the late afternoon, bringing two-inch diameter hail and potentially damaging hail as they move into southwest Lower Michigan by around 8 p.m., with other storms capable of producing one-inch hail.
• A squall line of severe thunderstorms is forecast to form, producing severe straight-line winds exceeding 70 mph as it moves across south-central and southeast Lower Michigan, posing significant risks to the region.
• Residents are advised to seek sturdy shelter in a real building during the evening as the storms progress and to take precautions such as parking vehicles in garages to protect against hail damage.