Alert archive / Michigan / Mesoscale Discussions in 2005

Mesoscale Discussion 1445

June 24, 200514 counties in Michigan; 9 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2005, 3:40 PM EDT for 14 counties in Michigan; 9 counties in Wisconsin. It was in force for 35 min.

The area

The outline as issued.

The facts

Issued: Jun 24, 2005, 3:40 PM EDT (19:40 UTC)
Expired: Jun 24, 2005, 4:15 PM EDT
In force: 35 min
Issued by: the Storm Prediction Center

All 23 counties

Antrim County, MI, Benzie County, MI, Charlevoix County, MI, Cheboygan County, MI, Chippewa County, MI, Delta County, MI, Emmet County, MI, Grand Traverse County, MI, Leelanau County, MI, Mackinac County, MI, Menominee County, MI, Montmorency County, MI, Otsego County, MI, Schoolcraft County, MI, Brown County, WI, Door County, WI, Kewaunee County, WI, Monroe County, WI, Oconto County, WI, Outagamie County, WI, Shawano County, WI, Waupaca County, WI, Waushara County, WI

The radar

The Green Bay radar (KGRB), 42 km from the middle of the area, began a volume at 19:41 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 518Jun 24, 5:00 PM EDT

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.7 hours before the alert went out and 44 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: 328 J/kg
Mixed-layer CIN: -337 J/kg
Mixed-layer LCL: 1330 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 24, 9:50 AM EDT	Severe Thunderstorm Watch	SPC	Antrim, Charlevoix, Cheboygan, Chippewa, Delta, Dickinson and 7 more	8 hr
Jun 24, 11:39 AM EDT	Mesoscale Discussion	SPC	Delta, Dickinson, Menominee	96 min
Jun 24, 1:54 PM EDT	Mesoscale Discussion	SPC	Antrim, Benzie, Charlevoix, Cheboygan, Chippewa, Delta and 9 more	66 min
Jun 23, 9:17 PM EDT	Mesoscale Discussion	SPC	Bayfield, Douglas	58 min
Jun 24, 7:58 AM EDT	Mesoscale Discussion	SPC	Chippewa, Clark, Dunn, Eau Claire, Langlade, Lincoln and 7 more	92 min
Jun 24, 3:19 PM EDT	Mesoscale Discussion	SPC	Crawford, Dane, Grant, Green, Iowa, Lafayette and 3 more	86 min
Jun 24, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	Crawford, Grant, Iowa, Juneau, Lafayette, Monroe and 3 more	7 hr
Jun 24, 6:22 PM EDT	Mesoscale Discussion	SPC	Adams, Brown, Calumet, Columbia, Crawford, Dane and 26 more	23 min
Jun 24, 6:50 PM EDT	Severe Thunderstorm Watch	SPC	Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 10 more	5 hr

Nearby

Mesoscale Discussions in Michigan, 2005 Mesoscale Discussions in Wisconsin, 2005 Every mesoscale discussion in 2005

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.