Alert archive / Michigan / Mesoscale Discussions in 2025
Mesoscale Discussion 280
The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2025, 8:58 PM EDT for 9 counties in Michigan. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2025, 8:58 PM EDT (00:58 UTC)
- Expired
- Mar 29, 2025, 2:00 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Freezing rain
Counties Alger County, MI, Baraga County, MI, Chippewa County, MI, Houghton County, MI, Keweenaw County, MI, Luce County, MI, Mackinac County, MI, Marquette County, MI, Schoolcraft County, MI
The radar
The Marquette radar (KMQT), 73 km from the middle of the area, began a volume at 01:01 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 nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.0 hours before the alert went out and 261 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 716 m²/s²
- 0-3 km storm-relative helicity
- 1084 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 15.9
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 5:09 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Charlevoix, Cheboygan, Crawford and 9 more | 4 hr |
Nearby
Mesoscale Discussions in Michigan, 2025Every mesoscale discussion in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.