Alert archive / Michigan / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 89, NWS Grand Rapids, MI

October 24, 2010Van Buren County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Oct 24, 2010, 11:54 PM EDT for Van Buren County, Michigan. It was in force for 34 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: Oct 24, 2010, 11:54 PM EDT (03:54 UTC)
Expired: Oct 25, 2010, 12:28 AM EDT
In force: 34 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 0.0 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 03:53 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 00:00Z, 3.9 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: 283 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1073 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 258 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.4

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 Oct 24, 10:23 PM EDT, 1 hour 31 minutes earlier.

Area forecast discussion, Oct 24, 10:23 PM EDT, 1 hour 31 minutes before

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Hazardous weather outlook, Oct 24, 5:45 PM EDT, 6 hours 9 minutes before

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In the hours before

Special weather statement, Oct 24, 9:59 PM EDT, 1 hour 55 minutes before

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Special weather statement, Oct 24, 10:15 PM EDT, 1 hour 39 minutes before

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Local storm report, Oct 24, 10:37 PM EDT, 1 hour 17 minutes before

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Special weather statement, Oct 24, 10:59 PM EDT, 55 minutes before

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Special weather statement, Oct 24, 11:02 PM EDT, 52 minutes before

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Local storm report, Oct 24, 11:39 PM EDT, 15 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
Oct 24, 8:59 PM EDT	Special Weather Statement	GRR	Ottawa	61 min
Oct 24, 9:04 PM EDT	Special Weather Statement	GRR	Barry, Kalamazoo, Van Buren	56 min
Oct 24, 9:57 PM EDT	Special Weather Statement	GRR	Clinton, Ionia, Kent	63 min
Oct 24, 9:59 PM EDT	Special Weather Statement	GRR	Isabella, Mecosta, Newaygo	61 min
Oct 24, 10:15 PM EDT	Special Weather Statement	GRR	Allegan, Kent, Ottawa, Van Buren	60 min
Oct 24, 10:51 PM EDT	Areal Flood Advisory	GRR	Allegan, Barry, Kalamazoo, Kent, Van Buren	6 hr
Oct 24, 10:59 PM EDT	Special Weather Statement	GRR	Clare, Isabella, Mecosta, Montcalm	61 min
Oct 24, 11:02 PM EDT	Special Weather Statement	GRR	Allegan, Barry, Clinton, Eaton, Ionia, Kent and 2 more	58 min
Oct 25, 12:11 AM EDT	Special Weather Statement	GRR	Barry, Clinton, Eaton, Ionia	64 min
Oct 25, 1:08 AM EDT	Special Weather Statement	GRR	Clinton, Gratiot	67 min
Oct 25, 3:58 AM EDT	Storm Warning	GRR		70 hr
Oct 25, 4:40 AM EDT	Areal Flood Advisory	GRR	Allegan, Barry, Kalamazoo, Van Buren	4 hr
Oct 25, 3:37 PM EDT	High Wind Warning	GRR	Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more	58 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2010 Every severe thunderstorm warning in 2010

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.