Alert archive / Indiana / Mesoscale Discussions in 2026

Mesoscale Discussion 149

March 6, 202610 counties in Illinois; 18 counties in Indiana; 7 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Mar 6, 2026, 2:10 PM CST for 10 counties in Illinois; 18 counties in Indiana; 7 counties in Michigan. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Mar 6, 2026, 2:10 PM CST (20:10 UTC)
Expired: Mar 6, 2026, 4:15 PM CST
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 40%

All 35 counties

Cook County, IL, DuPage County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, LaSalle County, IL, Livingston County, IL, Will County, IL, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, White County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Hillsdale County, MI, Kalamazoo County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 93 km from the middle of the area, began a volume at 20:11 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 17Mar 6, 5:00 PM CST

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 6, 5:02 PM CST	Severe Thunderstorm Watch	SPC	Ford, Grundy, Iroquois, Kankakee, Livingston, Will	4 hr

Nearby

Mesoscale Discussions in Indiana, 2026 Mesoscale Discussions in Illinois, 2026 Mesoscale Discussions in Michigan, 2026 Every mesoscale discussion in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.