Alert archive / Michigan / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 44, NWS Grand Rapids, MI

August 28, 2022Allegan County, Ottawa County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 28, 2022, 9:46 PM EDT for Allegan County, Ottawa County, Michigan. It was in force for 31 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 28, 2022, 9:46 PM EDT (01:46 UTC)
Expired: Aug 28, 2022, 10:17 PM EDT
In force: 31 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Allegan County, MI, Ottawa County, MI

The radar

The Grand Rapids radar (KGRR), 43 km from the middle of the area, began a volume at 01:45 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, 1.8 hours before the alert went out and 253 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 86 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 908 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -62 m²/s²
0-3 km storm-relative helicity: -50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 28, 7:44 PM EDT, 2 hours 2 minutes earlier.

Area forecast discussion, Aug 28, 7:44 PM EDT, 2 hours 2 minutes before

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Hazardous weather outlook, Aug 28, 3:53 PM EDT, 5 hours 53 minutes before

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In the hours before

Special weather statement, Aug 28, 4:54 PM EDT, 4 hours 52 minutes before

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Local storm report, Aug 28, 5:24 PM EDT, 4 hours 22 minutes before

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Special weather statement, Aug 28, 8:15 PM EDT, 1 hour 31 minutes before

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The 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 29, 1:46 PM EDT	Special Marine Warning	GRR		89 min
Aug 29, 1:47 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Mecosta, Newaygo, Osceola	37 min
Aug 29, 2:32 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon	58 min
Aug 29, 2:56 PM EDT	Severe Thunderstorm Warning Considerable damage threat	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 Considerable damage threat	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, 2022 Every 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.