Alert archive / Michigan / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 91, NWS Detroit, MI

August 23, 2023Macomb County, Oakland County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Aug 23, 2023, 9:40 AM EDT for Macomb County, Oakland County, Michigan. It was in force for 65 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 23, 2023, 9:40 AM EDT (13:40 UTC)
Expired: Aug 23, 2023, 10:45 AM EDT
In force: 65 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Macomb County, MI, Oakland County, MI

The radar

The Detroit radar (KDTX), 27 km from the middle of the area, began a volume at 13:39 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

Pittsburgh, PA (KPIT), launched 12:00Z, 1.7 hours before the alert went out and 357 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1464 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 7:49 AM EDT, 1 hour 51 minutes earlier.

Area forecast discussion, Aug 23, 7:49 AM EDT, 1 hour 51 minutes before

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Hazardous weather outlook, Aug 23, 5:05 AM EDT, 4 hours 35 minutes before

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In the hours before

Special weather statement, Aug 23, 7:38 AM EDT, 2 hours 2 minutes before

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Special weather statement, Aug 23, 7:43 AM EDT, 1 hour 57 minutes before

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Special weather statement, Aug 23, 8:13 AM EDT, 1 hour 27 minutes before

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Special weather statement, Aug 23, 9:26 AM EDT, 14 minutes before

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Local storm report, Aug 23, 9:39 AM EDT, 1 minute before

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The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 23, 7:38 AM EDT	Special Weather Statement	DTX	Bay	37 min
Aug 23, 7:43 AM EDT	Special Weather Statement	DTX	Huron	47 min
Aug 23, 7:48 AM EDT	Special Marine Warning	DTX		72 min
Aug 23, 8:13 AM EDT	Special Weather Statement	DTX	Tuscola	77 min
Aug 23, 8:37 AM EDT	Special Marine Warning	DTX		23 min
Aug 23, 8:54 AM EDT	Severe Thunderstorm Warning	DTX	Genesee, Lapeer, Tuscola	66 min
Aug 23, 9:26 AM EDT	Special Weather Statement	DTX	Tuscola	64 min
Aug 23, 10:11 AM EDT	Special Marine Warning	DTX		64 min
Aug 23, 10:15 AM EDT	Special Marine Warning	DTX		45 min
Aug 23, 10:18 AM EDT	Special Weather Statement	DTX	Huron	57 min
Aug 23, 10:46 AM EDT	Special Weather Statement	DTX	Wayne	29 min
Aug 23, 11:26 AM EDT	Special Weather Statement	DTX	Macomb	64 min
Aug 23, 11:53 AM EDT	Special Weather Statement	DTX	Wayne	37 min
Aug 23, 12:02 PM EDT	Special Marine Warning	DTX		34 min
Aug 23, 12:33 PM EDT	Areal Flood Advisory	DTX	Macomb, Oakland, Wayne	4 hr
Aug 23, 3:20 PM EDT	Heat Advisory	DTX	Lenawee, Livingston, Macomb, Monroe, Oakland, Washtenaw and 1 more	29 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2023 Every severe thunderstorm warning in 2023

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.