Alert archive / Michigan / Special Weather Statements in 2025
Special Weather Statement, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this special weather statement at Aug 12, 2025, 9:21 AM EDT for Ionia County, Kent County, Ottawa County, Michigan. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2025, 9:21 AM EDT (13:21 UTC)
- Expired
- Aug 12, 2025, 10:15 AM EDT
- In force
- 54 min
- Issued by
- NWS Grand Rapids, MI
- Hail
- 0.25 in
- Wind
- 40
Counties Ionia County, MI, Kent County, MI, Ottawa County, MI
The radar
The Grand Rapids radar (KGRR), 31 km from the middle of the area, began a volume at 13:25 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 12:00Z, 1.4 hours before the alert went out and 200 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
- 151 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1284 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 12, 7:57 AM EDT, 1 hour 24 minutes earlier.
Area forecast discussion, Aug 12, 7:57 AM EDT, 1 hour 24 minutes before
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</html>Hazardous weather outlook, Aug 12, 4:18 AM EDT, 5 hours 3 minutes before
Hazardous Weather Outlook National Weather Service Grand Rapids MI 418 AM EDT Tue Aug 12 2025 MIZ037>040-043>046-050>052-056>059-064>067-071>074-130830- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 418 AM EDT Tue Aug 12 2025 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Scattered thunderstorms are likely today. Some storms could produce wind gusts 40 to 60 mph and knock down tree limbs and power lines. If storms repeat over the same area, they could produce rain totals greater than 3 inches, which could lead to some temporary flooding of roads in low spots. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Hot and humid weather returns for the weekend along with a chance of thunderstorms. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible today. LMZ844>849-130830- 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- 418 AM EDT Tue Aug 12 2025 This hazardous weather outlook is for the nearshore waters from St Joseph to Manistee. .DAY ONE...Today and Tonight Scattered thunderstorms over Lake Michigan could produce locally strong wind gusts over 35 knots. A moderate swim risk with 2 to 4 ft waves could occur at some beaches where breezy winds persist in the vicinity of some thunderstorms. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Thunderstorms are possible over the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible today.
In the hours before
Special weather statement, Aug 12, 8:17 AM EDT, 1 hour 4 minutes before
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</html>Special weather statement, Aug 12, 9:11 AM EDT, 10 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 11, 11:32 PM EDT | Special Marine Warning | GRR | 2 hr | |
| Aug 11, 11:43 PM EDT | Special Weather Statement | GRR | Van Buren | 62 min |
| Aug 12, 12:51 AM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 114 min |
| Aug 12, 7:34 AM EDT | Special Marine Warning | GRR | 56 min | |
| Aug 12, 8:17 AM EDT | Special Weather Statement | GRR | Mason, Muskegon, Oceana | 58 min |
| Aug 12, 8:27 AM EDT | Special Marine Warning | GRR | 63 min | |
| Aug 12, 9:11 AM EDT | Special Weather Statement | GRR | Lake, Mason, Mecosta, Newaygo, Osceola | 64 min |
| Aug 12, 9:51 AM EDT | Special Weather Statement | GRR | Clare, Isabella, Mecosta, Montcalm, Osceola | 54 min |
| Aug 12, 2:16 PM EDT | Special Weather Statement | GRR | Jackson | 59 min |
| Aug 12, 3:55 PM EDT | Special Weather Statement | GRR | Kent | 50 min |
| Aug 12, 4:30 PM EDT | Special Weather Statement | GRR | Ionia | 60 min |
| Aug 12, 5:25 PM EDT | Special Weather Statement | GRR | Kalamazoo | 35 min |
| Aug 12, 5:37 PM EDT | Areal Flood Advisory | GRR | Barry, Calhoun, Kalamazoo | 4 hr |
| Aug 12, 5:58 PM EDT | Areal Flood Advisory | GRR | Kent, Ottawa | 3 hr |
| Aug 12, 6:05 PM EDT | Areal Flood Warning | GRR | Calhoun, Kalamazoo | 6 hr |
| Aug 12, 7:08 PM EDT | Areal Flood Advisory | GRR | Barry | 2 hr |
| Aug 12, 7:08 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 52 min |
Nearby
Special Weather Statements in Michigan, 2025Every special weather statement 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.