Alert archive / Michigan / Special Weather Statements in 2021

Special Weather Statement, NWS Detroit, MI

June 11, 2021Shiawassee County, Michigan

NWS Detroit, MI issued this special weather statement at Jun 11, 2021, 6:02 PM EDT for Shiawassee County, Michigan. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 11, 2021, 6:02 PM EDT (22:02 UTC)
Expired: Jun 11, 2021, 7:00 PM EDT
In force: 58 min
Issued by: NWS Detroit, MI

County Shiawassee County, MI

The radar

The Detroit radar (KDTX), 67 km from the middle of the area, began a volume at 22:03 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 12:00Z, 10.0 hours before the alert went out and 69 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: 94 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1136 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: -19 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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The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 3:36 PM EDT	Special Weather Statement	DTX	Bay, Midland	84 min
Jun 11, 5:00 PM EDT	Special Weather Statement	DTX	Midland	90 min
Jun 11, 5:08 PM EDT	Special Weather Statement	DTX	Saginaw, Tuscola	112 min
Jun 11, 6:33 PM EDT	Special Weather Statement	DTX	Genesee, Livingston	57 min
Jun 11, 7:50 PM EDT	Special Weather Statement	DTX	Lenawee, Livingston, Macomb, Monroe, Oakland, Washtenaw and 1 more	55 min

Nearby

Special Weather Statements in Michigan, 2021 Every special weather statement in 2021

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.