Alert archive / Michigan / Mesoscale Discussions in 2019

Mesoscale Discussion 919

June 1, 2019LaGrange County, Steuben County, Indiana; 14 counties in Michigan; Fulton County, Lucas County, Williams County, Ohio

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2019, 11:49 AM EDT for LaGrange County, Steuben County, Indiana; 14 counties in Michigan; Fulton County, Lucas County, Williams County, Ohio. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Jun 1, 2019, 11:49 AM EDT (15:49 UTC)
Expired: Jun 1, 2019, 1:45 PM EDT
In force: 116 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties LaGrange County, IN, Steuben County, IN, Barry County, MI, Branch County, MI, Calhoun County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Monroe County, MI, Saint Joseph County, MI, Washtenaw County, MI, Wayne County, MI, Fulton County, OH, Lucas County, OH, Williams County, OH

The radar

The Grand Rapids radar (KGRR), 108 km from the middle of the area, began a volume at 15:48 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 302Jun 1, 12:55 PM EDT

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 3.8 hours before the alert went out and 130 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: -299 J/kg
Mixed-layer LCL: 1845 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 1, 3:23 PM EDT	Severe Thunderstorm Watch	SPC	Lake, Porter	6 hr
Jun 1, 4:58 PM EDT	Mesoscale Discussion	SPC	Allen, DeKalb, Elkhart, Kosciusko, LaGrange, LaPorte and 6 more	2 hr
Jun 1, 5:37 PM EDT	Severe Thunderstorm Watch	SPC	Allen, DeKalb, Elkhart, Kosciusko, LaGrange, LaPorte and 6 more	5 hr
Jun 1, 6:21 PM EDT	Mesoscale Discussion	SPC	Jasper, Lake, Newton, Porter	54 min
Jun 1, 7:54 PM EDT	Mesoscale Discussion	SPC	DeKalb, Steuben	96 min
Jun 1, 12:55 PM EDT	Severe Thunderstorm Watch	SPC	Calhoun, Eaton, Ingham, Jackson, Lenawee, Livingston and 5 more	3 hr
Jun 1, 3:34 PM EDT	Mesoscale Discussion	SPC	Macomb, Monroe, Wayne	116 min
Jun 1, 6:42 PM EDT	Mesoscale Discussion	SPC	Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 6 more	63 min
Jun 1, 6:46 PM EDT	Severe Thunderstorm Watch	SPC	Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 9 more	3 hr
Jun 1, 4:02 PM EDT	Severe Thunderstorm Watch	SPC	Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 18 more	6 hr
Jun 1, 5:53 PM EDT	Mesoscale Discussion	SPC	Trumbull	97 min

Nearby

Mesoscale Discussions in Michigan, 2019 Mesoscale Discussions in Ohio, 2019 Mesoscale Discussions in Indiana, 2019 Every mesoscale discussion in 2019

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.