Alert archive / Michigan / Special Weather Statements in 2008

Special Weather Statement, NWS Grand Rapids, MI

August 6, 200811 counties in Michigan

NWS Grand Rapids, MI issued this special weather statement at Aug 6, 2008, 9:26 PM EDT for 11 counties in Michigan. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 6, 2008, 9:26 PM EDT (01:26 UTC)
Expired: Aug 6, 2008, 11:00 PM EDT
In force: 94 min
Issued by: NWS Grand Rapids, MI

Counties Allegan County, MI, Barry County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 39 km from the middle of the area, began a volume at 01:26 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 00:00Z, 1.4 hours before the alert went out and 308 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: 42 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1900 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 6, 7:45 PM EDT, 1 hour 41 minutes earlier.

Area forecast discussion, Aug 6, 7:45 PM EDT, 1 hour 41 minutes before

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Hazardous weather outlook, Aug 6, 3:45 PM EDT, 5 hours 41 minutes before

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In the hours before

Special weather statement, Aug 6, 6:18 PM EDT, 3 hours 8 minutes before

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Special weather statement, Aug 6, 7:11 PM EDT, 2 hours 15 minutes before

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Special weather statement, Aug 6, 7:53 PM EDT, 1 hour 33 minutes before

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Local storm report, Aug 6, 8:07 PM EDT, 1 hour 19 minutes before

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Special weather statement, Aug 6, 8:41 PM EDT, 45 minutes before

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Special weather statement, Aug 6, 9:26 PM EDT, 0 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
Aug 6, 8:41 PM EDT	Special Weather Statement	GRR	Allegan, Barry, Clinton, Ionia, Kent, Montcalm and 1 more	64 min
Aug 7, 11:46 AM EDT	Special Marine Warning	GRR		89 min
Aug 7, 12:02 PM EDT	Special Weather Statement	GRR	Allegan, Ottawa, Van Buren	88 min
Aug 7, 12:37 PM EDT	Special Weather Statement	GRR	Allegan, Van Buren	53 min
Aug 7, 12:46 PM EDT	Special Weather Statement	GRR	Barry, Calhoun, Clinton, Eaton, Gratiot, Ingham and 5 more	74 min
Aug 7, 1:17 PM EDT	Special Marine Warning	GRR		58 min
Aug 7, 1:21 PM EDT	Special Weather Statement	GRR	Allegan, Van Buren	54 min
Aug 7, 1:57 PM EDT	Special Weather Statement	GRR	Calhoun, Eaton, Ingham, Jackson, Kalamazoo	93 min
Aug 7, 2:06 PM EDT	Special Weather Statement	GRR	Clare, Clinton, Gratiot, Ionia, Isabella, Kent and 9 more	114 min
Aug 7, 2:18 PM EDT	Small Craft Advisory	GRR		22 hr
Aug 7, 4:28 PM EDT	Special Weather Statement	GRR	Barry, Calhoun, Eaton, Ingham, Jackson	62 min
Aug 7, 5:25 PM EDT	Special Weather Statement	GRR	Calhoun, Clinton, Eaton, Ingham, Ionia, Jackson	65 min
Aug 7, 6:24 PM EDT	Special Weather Statement	GRR	Calhoun, Clare, Clinton, Eaton, Gratiot, Ingham and 6 more	66 min

Nearby

Special Weather Statements in Michigan, 2008 Every special weather statement in 2008

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.