Alert archive / Michigan / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 36, NWS Grand Rapids, MI

June 24, 2013Van Buren County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 24, 2013, 8:07 PM EDT for Van Buren County, Michigan. It was in force for 53 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: Jun 24, 2013, 8:07 PM EDT (00:07 UTC)
Expired: Jun 24, 2013, 9:00 PM EDT
In force: 53 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 92 km from the middle of the area, began a volume at 00:07 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
Jun 24, 7:14 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 0.1 hours before the alert went out and 241 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: 921 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1342 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 64 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 Jun 24, 8:03 PM EDT, 4 minutes earlier.

Area forecast discussion, Jun 24, 8:03 PM EDT, 4 minutes before

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Hazardous weather outlook, Jun 24, 4:39 PM EDT, 3 hours 28 minutes before

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In the hours before

Special weather statement, Jun 24, 7:09 PM EDT, 58 minutes before

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Local storm report, Jun 24, 7:45 PM EDT, 22 minutes before

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Special weather statement, Jun 24, 7:48 PM EDT, 19 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
Jun 25, 4:46 AM EDT	Special Marine Warning	GRR		59 min
Jun 25, 5:31 AM EDT	Areal Flood Advisory	GRR	Allegan, Barry, Calhoun, Kalamazoo, Van Buren	6 hr
Jun 25, 11:27 AM EDT	Special Weather Statement	GRR	Ottawa	63 min
Jun 25, 11:55 AM EDT	Severe Thunderstorm Warning	GRR	Kent, Ottawa	50 min
Jun 25, 5:32 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	43 min
Jun 25, 5:53 PM EDT	Special Weather Statement	GRR	Kalamazoo	52 min
Jun 25, 6:00 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo	60 min
Jun 25, 6:36 PM EDT	Special Weather Statement	GRR	Calhoun	54 min
Jun 25, 7:56 PM EDT	Special Weather Statement	GRR	Calhoun, Jackson, Kalamazoo	64 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2013 Every severe thunderstorm warning in 2013

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.