Alert archive / Michigan / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 159, NWS Grand Rapids, MI

October 2, 2006Muskegon County, Newaygo County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Oct 2, 2006, 11:23 AM EDT for Muskegon County, Newaygo County, Michigan. It was in force for 18 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 2, 2006, 11:23 AM EDT (15:23 UTC)
Expired: Oct 2, 2006, 11:41 AM EDT
In force: 18 min
Issued by: NWS Grand Rapids, MI
Area: Counties, with a storm outline in the text

Counties Muskegon County, MI, Newaygo County, MI

The radar

The Grand Rapids radar (KGRR), 66 km from the middle of the area, began a volume at 15:23 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 12:00Z, 3.4 hours before the alert went out and 207 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: 77 J/kg
Mixed-layer CIN: -625 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 98 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 Oct 2, 3:54 AM EDT, 7 hours 29 minutes earlier.

Area forecast discussion, Oct 2, 3:54 AM EDT, 7 hours 29 minutes before

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Hazardous weather outlook, Oct 2, 6:19 AM EDT, 5 hours 4 minutes before

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In the hours before

Local storm report, Oct 2, 7:46 AM EDT, 3 hours 37 minutes before

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Local storm report, Oct 2, 7:54 AM EDT, 3 hours 29 minutes before

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Special weather statement, Oct 2, 10:36 AM EDT, 47 minutes before

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Special weather statement, Oct 2, 11:09 AM EDT, 14 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 2, 4:45 AM EDT	Special Marine Warning	GRR		90 min
Oct 2, 7:47 AM EDT	Severe Thunderstorm Warning	GRR	Van Buren	43 min
Oct 2, 8:11 AM EDT	Special Marine Warning	GRR		45 min
Oct 2, 10:09 AM EDT	Special Marine Warning	GRR		96 min
Oct 2, 10:51 AM EDT	Severe Thunderstorm Warning	GRR	Muskegon	24 min
Oct 2, 11:01 AM EDT	Severe Thunderstorm Warning	GRR	Ottawa	29 min
Oct 2, 11:44 AM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Ottawa	46 min
Oct 2, 2:04 PM EDT	Severe Thunderstorm Warning	GRR	Mecosta, Montcalm	24 min
Oct 2, 2:38 PM EDT	Special Marine Warning	GRR		67 min
Oct 2, 2:56 PM EDT	Severe Thunderstorm Warning	GRR	Clinton	27 min
Oct 2, 4:53 PM EDT	Special Marine Warning	GRR		37 min
Oct 2, 4:56 PM EDT	Severe Thunderstorm Warning	GRR	Mason	64 min
Oct 2, 5:25 PM EDT	Tornado Warning	GRR	Mason	26 min
Oct 2, 5:37 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Newaygo, Oceana	68 min
Oct 2, 6:00 PM EDT	Special Marine Warning	GRR		30 min
Oct 2, 6:45 PM EDT	Severe Thunderstorm Warning	GRR	Newaygo, Oceana	75 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2006 Every severe thunderstorm warning in 2006

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.