Alert archive / Michigan / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 80, NWS Detroit, MI

October 1, 2019Saginaw County, Shiawassee County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Oct 1, 2019, 12:26 PM EDT for Saginaw County, Shiawassee County, Michigan. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 1, 2019, 12:26 PM EDT (16:26 UTC)
Expired: Oct 1, 2019, 1:18 PM EDT
In force: 52 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Saginaw County, MI, Shiawassee County, MI

The radar

The Detroit radar (KDTX), 71 km from the middle of the area, began a volume at 16:30 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, 4.4 hours before the alert went out and 72 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: 311 J/kg
Mixed-layer CIN: -238 J/kg
Mixed-layer LCL: 1178 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 1, 10:41 AM EDT, 1 hour 45 minutes earlier.

Area forecast discussion, Oct 1, 10:41 AM EDT, 1 hour 45 minutes before

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Hazardous weather outlook, Oct 1, 4:57 AM EDT, 7 hours 29 minutes before

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In the hours before

Special weather statement, Oct 1, 12:14 PM EDT, 12 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 1, 12:14 PM EDT	Special Weather Statement	DTX	Saginaw	46 min
Oct 1, 12:48 PM EDT	Severe Thunderstorm Warning	DTX	Genesee	36 min
Oct 1, 1:02 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Tuscola	43 min
Oct 1, 1:35 PM EDT	Special Weather Statement	DTX	Sanilac	40 min
Oct 1, 1:53 PM EDT	Special Marine Warning	DTX		57 min
Oct 1, 2:55 PM EDT	Flood Watch	DTX	Bay, Genesee, Huron, Lapeer, Midland, Saginaw and 3 more	24 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2019 Every severe thunderstorm warning 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.