Alert archive / Michigan / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 10, NWS Marquette, MI

July 7, 2013Dickinson County, Iron County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Jul 7, 2013, 6:05 PM CDT for Dickinson County, Iron County, Michigan. It was in force for 40 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 7, 2013, 6:05 PM CDT (23:05 UTC)
Expired: Jul 7, 2013, 6:45 PM CDT
In force: 40 min
Issued by: NWS Marquette, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dickinson County, MI, Iron County, MI

The radar

The Marquette radar (KMQT), 69 km from the middle of the area, began a volume at 23:06 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

Minneapolis, MN (KMPX), launched 12:00Z, 11.1 hours before the alert went out and 444 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: 335 J/kg
Mixed-layer CIN: -222 J/kg
Mixed-layer LCL: 1274 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 56 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 Marquette, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 7, 2:59 PM CDT, 3 hours 6 minutes earlier.

Area forecast discussion, Jul 7, 2:59 PM CDT, 3 hours 6 minutes before

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Hazardous weather outlook, Jul 7, 3:07 PM CDT, 2 hours 58 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 8:39 PM CDT	Marine Dense Fog Advisory	MQT		16 hr
Jul 7, 6:48 AM CDT	Areal Flood Advisory	MQT	Gogebic, Ontonagon	6 hr
Jul 7, 4:32 PM CDT	Marine Dense Fog Advisory	MQT		47 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2013 Every severe thunderstorm warning in 2013

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.