Alert archive / Michigan / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 10, NWS Detroit, MI

May 8, 2014Saint Clair County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at May 8, 2014, 1:55 AM EDT for Saint Clair County, Michigan. It was in force for 65 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: May 8, 2014, 1:55 AM EDT (05:55 UTC)
Expired: May 8, 2014, 3:00 AM EDT
In force: 65 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Saint Clair County, MI

The radar

The Detroit radar (KDTX), 71 km from the middle of the area, began a volume at 05:57 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, 5.9 hours before the alert went out and 67 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 874 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 372 m²/s²
0-3 km storm-relative helicity: 531 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 May 8, 12:05 AM EDT, 1 hour 50 minutes earlier.

Area forecast discussion, May 8, 12:05 AM EDT, 1 hour 50 minutes before

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In the hours before

Local storm report, May 7, 10:23 PM EDT, 3 hours 32 minutes before

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Special weather statement, May 7, 10:35 PM EDT, 3 hours 20 minutes before

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Special weather statement, May 8, 12:29 AM EDT, 1 hour 26 minutes before

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Special weather statement, May 8, 1:26 AM EDT, 29 minutes before

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Special weather statement, May 8, 1:45 AM EDT, 10 minutes before

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Special weather statement, May 8, 1:48 AM EDT, 7 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
May 8, 2:30 AM EDT	Special Marine Warning	DTX		90 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2014 Every severe thunderstorm warning in 2014

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.