Alert archive / Michigan / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 88, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 30, 2024, 4:52 PM EDT for Calhoun County, Kalamazoo County, Michigan. It was in force for 26 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
- Aug 30, 2024, 4:52 PM EDT (20:52 UTC)
- Expired
- Aug 30, 2024, 5:18 PM EDT
- In force
- 26 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, MI, Kalamazoo County, MI
The radar
The Grand Rapids radar (KGRR), 76 km from the middle of the area, began a volume at 20:54 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 30, 4:44 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.9 hours before the alert went out and 338 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Rapids, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 30, 3:26 PM EDT, 1 hour 26 minutes earlier.
Area forecast discussion, Aug 30, 3:26 PM EDT, 1 hour 26 minutes before
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</html>Hazardous weather outlook, Aug 30, 4:00 AM EDT, 12 hours 52 minutes before
Hazardous Weather Outlook National Weather Service Grand Rapids MI 400 AM EDT Fri Aug 30 2024 MIZ037>040-043>046-050>052-056>059-064>067-071>074-310800- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 400 AM EDT Fri Aug 30 2024 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Scattered thunderstorms may develop this afternoon near or east of a Kalamazoo to Lansing to Mount Pleasant line. Some thunderstorms could produce locally strong to severe wind gusts. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible this afternoon in southern, mid, and eastern portions of Lower Michigan. LMZ844>849-310800- St Joseph to South Haven MI-South Haven to Holland MI- Holland to Grand Haven MI-Grand Haven to Whitehall MI- Whitehall to Pentwater MI-Pentwater to Manistee MI- 400 AM EDT Fri Aug 30 2024 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Winds on Lake Michigan will be hazardous to small craft this morning, particularly between Grand Haven and Manistee. A moderate swim risk due to 2 to 4 foot waves is expected this morning between Muskegon and Ludington. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A high swim risk due to high waves and strong currents on Lake Michigan is expected on Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
In the hours before
Special weather statement, Aug 30, 4:38 PM EDT, 14 minutes before
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</html>The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 2:20 AM EDT | Small Craft Advisory | GRR | 8 hr | |
| Aug 30, 3:07 PM EDT | Beach Hazards Statement | GRR | Allegan, Mason, Muskegon, Oceana, Ottawa, Van Buren | 58 hr |
| Aug 30, 3:09 PM EDT | Small Craft Advisory | GRR | 58 hr | |
| Aug 30, 4:38 PM EDT | Special Weather Statement | GRR | Kalamazoo | 37 min |
| Aug 30, 5:12 PM EDT | Special Weather Statement | GRR | Calhoun | 33 min |
| Aug 30, 5:52 PM EDT | Special Weather Statement | GRR | Calhoun | 23 min |
| Aug 30, 6:13 PM EDT | Special Weather Statement | GRR | Jackson | 47 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2024Every severe thunderstorm warning in 2024
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.