Alert archive / Michigan / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 48, NWS Grand Rapids, MI

July 13, 2023Clinton County, Ingham County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Jul 13, 2023, 12:04 AM EDT for Clinton County, Ingham County, Michigan. It was in force for 41 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: Jul 13, 2023, 12:04 AM EDT (04:04 UTC)
Expired: Jul 13, 2023, 12:45 AM EDT
In force: 41 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Clinton County, MI, Ingham County, MI

The radar

The Detroit radar (KDTX), 83 km from the middle of the area, began a volume at 04:07 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
Jul 12, 8:55 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 4.1 hours before the alert went out and 86 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: 26 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 578 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 257 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 Jul 12, 9:40 PM EDT, 2 hours 24 minutes earlier.

Area forecast discussion, Jul 12, 9:40 PM EDT, 2 hours 24 minutes before

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Hazardous weather outlook, Jul 12, 7:40 PM EDT, 4 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
740 PM EDT Wed Jul 12 2023

LMZ844>849-MIZ037>040-043>046-050>052-056>059-064>067-071>074-
130815-
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-Mason-Lake-
Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-Montcalm-
Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-Ingham-
Van Buren-Kalamazoo-Calhoun-Jackson-
740 PM EDT Wed Jul 12 2023

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Tonight

There is a slight risk of severe weather tonight mainly near and
south of Interstate 96. The main threat will be downburst winds and
heavy rains. A tornado risk also exists, especially near and south
of Interstate 94. The severe weather threat will end shortly after
Midnight.

Flooding is possible across the southern half of Lower Michigan
tonight. Urban and poor drainage areas along with small streams are
at most risk for impacts.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thunderstorms are expected Thursday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

In the hours before

Local storm report, Jul 12, 11:31 PM EDT, 33 minutes before

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Local storm report, Jul 12, 11:37 PM EDT, 27 minutes before

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Local storm report, Jul 12, 11:47 PM EDT, 17 minutes before

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Local storm report, Jul 12, 11:49 PM EDT, 15 minutes before

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Local storm report, Jul 12, 11:56 PM EDT, 8 minutes before

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Local storm report, Jul 12, 11:59 PM EDT, 5 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
Jul 12, 8:41 PM EDT	Areal Flood Advisory	GRR	Allegan, Barry, Clinton, Eaton, Gratiot, Ingham and 6 more	3 hr
Jul 12, 8:43 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Van Buren	92 min
Jul 12, 9:28 PM EDT	Tornado Warning	GRR	Van Buren	47 min
Jul 12, 9:59 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo	69 min
Jul 12, 10:37 PM EDT	Areal Flood Warning	GRR	Kent	6 hr
Jul 12, 10:52 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Eaton	53 min
Jul 12, 11:03 PM EDT	Severe Thunderstorm Warning	GRR	Ionia	46 min
Jul 12, 11:23 PM EDT	Areal Flood Warning	GRR	Clinton, Eaton, Ingham, Ionia	5 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.