Alert archive / Michigan / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 33, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 13, 2026, 8:29 PM EDT for Clinton County, Ionia County, Michigan. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 13, 2026, 8:29 PM EDT (00:29 UTC)
- Expired
- Apr 13, 2026, 9:30 PM EDT
- In force
- 61 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Clinton County, MI, Ionia County, MI
The radar
The Grand Rapids radar (KGRR), 58 km from the middle of the area, began a volume at 00:33 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
Detroit, MI (KDTX), launched 00:00Z, 0.5 hours before the alert went out and 117 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
- 854 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1416 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 8:02 PM EDT | Severe Thunderstorm Warning | GRR | Eaton, Ionia, Kent | 47 min |
| Apr 13, 8:39 PM EDT | Severe Thunderstorm Warning | GRR | Ionia | 36 min |
| Apr 13, 9:09 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 36 min |
| Apr 13, 10:59 PM EDT | Special Marine Warning | GRR | 38 min | |
| Apr 13, 11:21 PM EDT | Severe Thunderstorm Warning | GRR | Mason | 39 min |
| Apr 13, 11:45 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Mason, Newaygo, Oceana | 45 min |
| Apr 14, 12:22 AM EDT | Severe Thunderstorm Warning | GRR | Clare, Osceola | 53 min |
| Apr 14, 12:47 AM EDT | Special Marine Warning | GRR | 58 min | |
| Apr 14, 1:34 AM EDT | Special Weather Statement | GRR | Clinton | 41 min |
| Apr 14, 1:46 AM EDT | Areal Flood Advisory | GRR | Lake, Mason, Osceola | 6 hr |
| Apr 14, 2:08 AM EDT | Areal Flood Warning | GRR | Mason | 5 hr |
| Apr 14, 2:29 AM EDT | Areal Flood Warning | GRR | Lake, Osceola | 5 hr |
| Apr 14, 2:49 AM EDT | Special Marine Warning | GRR | 2 hr | |
| Apr 14, 2:55 AM EDT | Areal Flood Advisory | GRR | Clare | 5 hr |
| Apr 14, 3:43 AM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Oceana, Ottawa | 45 min |
| Apr 14, 4:07 AM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 68 min |
| Apr 14, 4:30 AM EDT | Special Weather Statement | GRR | Kent | 45 min |
| Apr 14, 4:47 AM EDT | Special Weather Statement | GRR | Gratiot, Isabella, Mecosta, Montcalm | 43 min |
| Apr 14, 4:52 AM EDT | Special Weather Statement | GRR | Barry, Ionia, Kalamazoo, Van Buren | 38 min |
| Apr 14, 5:08 AM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella | 21 min |
| Apr 14, 5:13 AM EDT | Special Weather Statement | GRR | Calhoun, Clinton, Eaton, Ingham, Jackson | 92 min |
| Apr 14, 5:39 AM EDT | Special Weather Statement | GRR | Barry, Gratiot, Kalamazoo | 36 min |
| Apr 14, 11:27 AM EDT | River Flood Warning | GRR | Ingham | 5 days |
Nearby
Severe Thunderstorm Warnings in Michigan, 2026Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.