Alert archive / Michigan / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 67, NWS Detroit, MI

September 3, 2015Livingston County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Sep 3, 2015, 5:39 PM EDT for Livingston County, Michigan. It was in force for 32 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: Sep 3, 2015, 5:39 PM EDT (21:39 UTC)
Expired: Sep 3, 2015, 6:11 PM EDT
In force: 32 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Livingston County, MI

The radar

The Detroit radar (KDTX), 38 km from the middle of the area, began a volume at 21:41 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, 9.7 hours before the alert went out and 41 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: 1723 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -1 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

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 Sep 3, 4:29 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Sep 3, 4:29 PM EDT, 1 hour 10 minutes before

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Hazardous weather outlook, Sep 3, 4:48 PM EDT, 51 minutes before

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In the hours before

Local storm report, Sep 3, 4:23 PM EDT, 1 hour 16 minutes before

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Special weather statement, Sep 3, 4:34 PM EDT, 1 hour 5 minutes before

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Special weather statement, Sep 3, 4:44 PM EDT, 55 minutes before

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Special weather statement, Sep 3, 5:01 PM EDT, 38 minutes before

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Local storm report, Sep 3, 5:10 PM EDT, 29 minutes before

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Local storm report, Sep 3, 5:19 PM EDT, 20 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
Sep 3, 8:26 AM EDT	Special Weather Statement	DTX	Midland	34 min
Sep 3, 9:23 AM EDT	Special Weather Statement	DTX	Midland	67 min
Sep 3, 9:59 AM EDT	Special Marine Warning	DTX		91 min
Sep 3, 10:10 AM EDT	Special Weather Statement	DTX	Bay, Saginaw	95 min
Sep 3, 10:27 AM EDT	Special Weather Statement	DTX	Bay, Saginaw	33 min
Sep 3, 11:08 AM EDT	Severe Thunderstorm Warning	DTX	Bay, Saginaw	52 min
Sep 3, 11:17 AM EDT	Special Weather Statement	DTX	Huron	88 min
Sep 3, 11:35 AM EDT	Special Weather Statement	DTX	Genesee, Tuscola	25 min
Sep 3, 11:52 AM EDT	Special Weather Statement	DTX	Huron	53 min
Sep 3, 12:02 PM EDT	Special Weather Statement	DTX	Genesee, Shiawassee	58 min
Sep 3, 12:09 PM EDT	Special Marine Warning	DTX		96 min
Sep 3, 12:59 PM EDT	Special Weather Statement	DTX	Genesee, Lapeer	61 min
Sep 3, 1:00 PM EDT	Special Weather Statement	DTX	Oakland	30 min
Sep 3, 1:29 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Oakland	61 min
Sep 3, 1:35 PM EDT	Special Weather Statement	DTX	Wayne	55 min
Sep 3, 1:43 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	77 min
Sep 3, 1:47 PM EDT	Areal Flood Advisory	DTX	Bay, Midland, Saginaw	3 hr
Sep 3, 1:49 PM EDT	Special Marine Warning	DTX		86 min
Sep 3, 1:56 PM EDT	Severe Thunderstorm Warning	DTX	Wayne	79 min
Sep 3, 3:00 PM EDT	Flash Flood Warning	DTX	Bay, Midland, Saginaw	3 hr
Sep 3, 3:18 PM EDT	Special Marine Warning	DTX		57 min
Sep 3, 3:22 PM EDT	Special Marine Warning	DTX		53 min
Sep 3, 4:34 PM EDT	Special Weather Statement	DTX	Wayne	56 min
Sep 3, 4:37 PM EDT	Flash Flood Watch	DTX	Bay, Genesee, Huron, Lapeer, Macomb, Midland and 6 more	9 hr
Sep 3, 4:44 PM EDT	Special Weather Statement	DTX	Washtenaw	61 min
Sep 3, 5:01 PM EDT	Special Weather Statement	DTX	Livingston, Shiawassee	29 min
Sep 3, 6:26 PM EDT	Special Weather Statement	DTX	Washtenaw, Wayne	49 min
Sep 3, 7:01 PM EDT	Special Weather Statement	DTX	Lapeer	44 min
Sep 3, 7:31 PM EDT	Special Weather Statement	DTX	Macomb, Saint Clair	44 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2015 Every severe thunderstorm warning in 2015

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.