Alert archive / Ohio / Mesoscale Discussions in 2019

Mesoscale Discussion 939

June 1, 2019DeKalb County, Steuben County, Indiana; 18 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2019, 7:54 PM EDT for DeKalb County, Steuben County, Indiana; 18 counties in Ohio. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Jun 1, 2019, 7:54 PM EDT (23:54 UTC)
Expired: Jun 1, 2019, 9:30 PM EDT
In force: 96 min
Issued by: the Storm Prediction Center

Counties DeKalb County, IN, Steuben County, IN, Allen County, OH, Crawford County, OH, Defiance County, OH, Delaware County, OH, Fulton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Knox County, OH, Marion County, OH, Morrow County, OH, Paulding County, OH, Putnam County, OH, Richland County, OH, Seneca County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH

The radar

The Northern Indiana radar (KIWX), 140 km from the middle of the area, began a volume at 23:55 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.9 hours before the alert went out and 185 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: 37 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1499 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 26 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, 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, 3:34 PM EDT	Mesoscale Discussion	SPC	Ashtabula, Cuyahoga, Erie, Lake, Lorain, Lucas and 3 more	116 min
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 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.