Alert archive / Michigan / Mesoscale Discussions in 2014

Mesoscale Discussion 1230

June 30, 2014Elkhart County, Saint Joseph County, Indiana; 16 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2014, 10:06 PM EDT for Elkhart County, Saint Joseph County, Indiana; 16 counties in Michigan. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 30, 2014, 10:06 PM EDT (02:06 UTC)
Expired: Jun 30, 2014, 11:30 PM EDT
In force: 84 min
Issued by: the Storm Prediction Center

Counties Elkhart County, IN, Saint Joseph County, IN, Barry County, MI, Calhoun County, MI, Cass County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Gladwin County, MI, Gratiot County, MI, Ionia County, MI, Isabella County, MI, Kalamazoo County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Roscommon County, MI, Saint Joseph County, MI

The radar

The Grand Rapids radar (KGRR), 25 km from the middle of the area, began a volume at 02:09 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 00:00Z, 2.1 hours before the alert went out and 173 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: 1381 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1064 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 70 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 30, 8:47 PM EDT	Mesoscale Discussion	SPC	Fulton, Jasper, Lake, LaPorte, Marshall, Newton and 5 more	88 min
Jun 30, 9:44 PM EDT	Mesoscale Discussion	SPC	Jasper, Lake, LaPorte, Newton, Porter	31 min
Jun 30, 10:01 PM EDT	Severe Thunderstorm Watch	SPC	Benton, Jasper, Lake, Newton, Porter	6 hr
Jun 30, 10:47 PM EDT	Mesoscale Discussion	SPC	Lake	88 min
Jun 30, 11:11 PM EDT	Mesoscale Discussion	SPC	Boone, Carroll, Cass, Clinton, Fountain, Fulton and 16 more	2 hr
Jun 30, 11:22 PM EDT	Mesoscale Discussion	SPC	Lake, Newton	53 min
Jun 30, 11:35 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allen, Blackford, Carroll, Cass, Clinton and 24 more	4 hr
Jul 1, 12:31 AM EDT	Mesoscale Discussion	SPC	Benton, Carroll, Cass, Elkhart, Fountain, Fulton and 14 more	89 min
Jul 1, 1:24 AM EDT	Mesoscale Discussion	SPC	Adams, Allen, DeKalb, Huntington, Jay, LaGrange and 4 more	66 min
Jul 1, 2:56 AM EDT	Mesoscale Discussion	SPC	Bartholomew, Dearborn, Decatur, Fayette, Franklin, Henry and 11 more	64 min
Jul 1, 3:07 PM EDT	Severe Thunderstorm Watch	SPC	Gibson, Pike, Posey, Spencer, Vanderburgh, Warrick	7 hr
Jul 1, 5:43 PM EDT	Mesoscale Discussion	SPC	Clark, Crawford, Dearborn, Floyd, Franklin, Harrison and 10 more	92 min
Jun 30, 8:23 PM EDT	Severe Thunderstorm Watch	SPC	Allegan, Arenac, Barry, Calhoun, Clare, Clinton and 25 more	7 hr
Jul 1, 1:44 AM EDT	Severe Thunderstorm Watch	SPC	Hillsdale, Lenawee, Livingston, Macomb, Monroe, Oakland and 3 more	4 hr
Jul 1, 4:05 AM EDT	Mesoscale Discussion	SPC	Macomb, Saint Clair	55 min

Nearby

Mesoscale Discussions in Michigan, 2014 Mesoscale Discussions in Indiana, 2014 Every mesoscale discussion in 2014

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.