Alert archive / Michigan / Mesoscale Discussions in 2020

Mesoscale Discussion 1014

June 26, 20208 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2020, 9:09 PM EDT for 8 counties in Michigan. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Jun 26, 2020, 9:09 PM EDT (01:09 UTC)
Expired: Jun 26, 2020, 10:15 PM EDT
In force: 66 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 307

Counties Allegan County, MI, Barry County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Kalamazoo County, MI, Saint Joseph County, MI, Van Buren County, MI

The radar

The Northern Indiana radar (KIWX), 81 km from the middle of the area, began a volume at 01:14 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

Detroit, MI (KDTX), launched 00:00Z, 1.2 hours before the alert went out and 211 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: 18 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1267 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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Nearby

Mesoscale Discussions in Michigan, 2020 Every mesoscale discussion in 2020

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.