Alert archive / Indiana / Mesoscale Discussions in 2019

Mesoscale Discussion 929

June 1, 201912 counties in Indiana; 4 counties in Michigan; 5 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2019, 4:58 PM EDT for 12 counties in Indiana; 4 counties in Michigan; 5 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 1, 2019, 4:58 PM EDT (20:58 UTC)
Expired: Jun 1, 2019, 7:00 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 21 counties

Allen County, IN, DeKalb County, IN, Elkhart County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Noble County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Whitley County, IN, Branch County, MI, Cass County, MI, Hillsdale County, MI, Saint Joseph County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 22 km from the middle of the area, began a volume at 20:56 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, 9.0 hours before the alert went out and 220 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, 11:49 AM EDT	Mesoscale Discussion	SPC	LaGrange, Steuben	116 min
Jun 1, 3:23 PM EDT	Severe Thunderstorm Watch	SPC	Lake, Porter	6 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 Indiana, 2019 Mesoscale Discussions in Ohio, 2019 Mesoscale Discussions in Michigan, 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.