Alert archive / Michigan / Mesoscale Discussions in 2004

Mesoscale Discussion 1156

June 9, 2004Steuben County, Indiana; 28 counties in Michigan; 6 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2004, 1:51 PM EST for Steuben County, Indiana; 28 counties in Michigan; 6 counties in Ohio. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 9, 2004, 1:51 PM EST (18:51 UTC)
Expired: Jun 9, 2004, 3:15 PM EST
In force: 84 min
Issued by: the Storm Prediction Center

All 35 counties

Steuben County, IN, Barry County, MI, Branch County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Mecosta County, MI, Midland County, MI, Monroe County, MI, Montcalm County, MI, Oakland County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI, Erie County, OH, Fulton County, OH, Lucas County, OH, Ottawa County, OH, Sandusky County, OH, Williams County, OH

The radar

The Detroit radar (KDTX), 75 km from the middle of the area, began a volume at 18:55 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.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.9 hours before the alert went out and 79 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: 1547 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 972 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 34 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 9, 10:21 AM EST	Mesoscale Discussion	SPC	DeKalb, Elkhart, LaGrange, LaPorte, Marshall, Noble and 2 more	114 min
Jun 9, 11:35 AM EST	Severe Thunderstorm Watch	SPC	DeKalb, Steuben	5 hr
Jun 9, 4:27 PM EST	Mesoscale Discussion	SPC	Steuben	63 min
Jun 9, 5:54 PM EST	Mesoscale Discussion	SPC	Bartholomew, Daviess, Dearborn, Decatur, Franklin, Gibson and 7 more	96 min
Jun 9, 5:05 PM EST	Severe Thunderstorm Watch	SPC	Barry, Bay, Clinton, Eaton, Genesee, Gratiot and 23 more	6 hr
Jun 9, 12:00 PM EST	Severe Thunderstorm Watch	SPC	Ashland, Ashtabula, Crawford, Cuyahoga, Delaware, Erie and 16 more	5 hr
Jun 9, 2:44 PM EST	Mesoscale Discussion	SPC	Ashland, Ashtabula, Crawford, Cuyahoga, Delaware, Erie and 15 more	91 min
Jun 9, 4:50 PM EST	Severe Thunderstorm Watch	SPC	Ashland, Ashtabula, Carroll, Champaign, Columbiana, Crawford and 29 more	4 hr

Nearby

Mesoscale Discussions in Michigan, 2004 Mesoscale Discussions in Ohio, 2004 Mesoscale Discussions in Indiana, 2004 Every mesoscale discussion in 2004

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.