Alert archive / Michigan / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 63, NWS Detroit, MI

July 4, 2005Washtenaw County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 4, 2005, 5:40 PM EDT for Washtenaw County, Michigan. It was in force for 28 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: Jul 4, 2005, 5:40 PM EDT (21:40 UTC)
Expired: Jul 4, 2005, 6:08 PM EDT
In force: 28 min
Issued by: NWS Detroit, MI
Area: Counties, with a storm outline in the text

County Washtenaw County, MI

The radar

The Detroit radar (KDTX), 58 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 4, 3:50 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.7 hours before the alert went out and 62 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: 100 J/kg
Mixed-layer CIN: -192 J/kg
Mixed-layer LCL: 1260 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 82 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 Jul 4, 3:40 PM EDT, 2 hours earlier.

Area forecast discussion, Jul 4, 3:40 PM EDT, 2 hours before

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Hazardous weather outlook, Jul 4, 11:36 AM EDT, 6 hours 4 minutes before

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In the hours before

Special weather statement, Jul 4, 3:50 PM EDT, 1 hour 50 minutes before

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Nearby

Severe Thunderstorm Warnings in Michigan, 2005 Every severe thunderstorm warning in 2005

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.