Alert archive / Michigan / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 45, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 29, 2022, 1:47 PM EDT for 4 counties in Michigan. It was in force for 37 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 29, 2022, 1:47 PM EDT (17:47 UTC)
- Expired
- Aug 29, 2022, 2:24 PM EDT
- In force
- 37 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lake County, MI, Mecosta County, MI, Newaygo County, MI, Osceola County, MI
The radar
The Grand Rapids radar (KGRR), 100 km from the middle of the area, began a volume at 17:47 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, 5.8 hours before the alert went out and 210 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
- 99 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
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 29, 11:47 AM EDT, 2 hours earlier.
Area forecast discussion, Aug 29, 11:47 AM EDT, 2 hours before
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</html>Hazardous weather outlook, Aug 29, 3:25 AM EDT, 10 hours 22 minutes before
Hazardous Weather Outlook National Weather Service Grand Rapids MI 325 AM EDT Mon Aug 29 2022 MIZ037>040-043>046-050>052-056>059-064>067-071>074-300730- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 325 AM EDT Mon Aug 29 2022 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Thunderstorms, possibly severe with strong winds, are possible today and this evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. LMZ844>849-300730- 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- 325 AM EDT Mon Aug 29 2022 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Wind and waves will be hazardous to small craft through this evening. Additionally, thunderstorms, possibly severe with strong winds, are possible today and this evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Wind and waves will be hazardous to small craft Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
In the hours before
Local storm report, Aug 29, 11:42 AM EDT, 2 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1142 AM EDT MON AUG 29 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1215 AM HEAVY RAIN 4 SE GLENN 42.48N 86.18W
08/29/2022 M1.00 INCH ALLEGAN MI PUBLIC
HEAVY RAIN FELL PRIMARILY BETWEEN 11PM AND
MIDNIGHT.
&&
AMDThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:15 PM EDT | Special Weather Statement | GRR | Newaygo, Ottawa | 60 min |
| Aug 28, 9:41 PM EDT | Special Marine Warning | GRR | 34 min | |
| Aug 28, 9:46 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 31 min |
| Aug 29, 1:46 PM EDT | Special Marine Warning | GRR | 89 min | |
| Aug 29, 2:32 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon | 58 min |
| Aug 29, 2:56 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 54 min |
| Aug 29, 3:01 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta, Newaygo | 59 min |
| Aug 29, 3:14 PM EDT | Special Marine Warning | GRR | 41 min | |
| Aug 29, 3:17 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kent | 58 min |
| Aug 29, 3:33 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella, Mecosta, Osceola | 67 min |
| Aug 29, 3:40 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Calhoun, Kalamazoo, Van Buren | 65 min |
| Aug 29, 3:47 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Clinton, Eaton, Gratiot, Ingham, Ionia and 1 more | 88 min |
| Aug 29, 4:15 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton, Ingham, Jackson | 90 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2022Every severe thunderstorm warning in 2022
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.