Alert archive / Michigan / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 8, NWS Marquette, MI

July 22, 2014Gogebic County, Ontonagon County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Jul 22, 2014, 2:39 AM CDT for Gogebic County, Ontonagon County, Michigan. It was in force for 66 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 22, 2014, 2:39 AM CDT (07:39 UTC)
Expired: Jul 22, 2014, 3:45 AM CDT
In force: 66 min
Issued by: NWS Marquette, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Gogebic County, MI, Ontonagon County, MI

The radar

The Marquette radar (KMQT), 153 km from the middle of the area, began a volume at 07:41 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 22, 1:20 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.7 hours before the alert went out and 265 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: 71 J/kg
Mixed-layer CIN: -435 J/kg
Mixed-layer LCL: 1542 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 79 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 22, 12:48 AM CDT, 1 hour 51 minutes earlier.

Area forecast discussion, Jul 22, 12:48 AM CDT, 1 hour 51 minutes before

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Hazardous weather outlook, Jul 21, 2:26 PM CDT, 12 hours 13 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 22, 2:24 AM CDT	Special Marine Warning	MQT		111 min
Jul 22, 3:18 AM CDT	Severe Thunderstorm Warning	MQT	Keweenaw	57 min
Jul 22, 4:10 AM CDT	Special Marine Warning	MQT		95 min
Jul 22, 4:34 AM CDT	Special Marine Warning	MQT		101 min
Jul 22, 6:22 AM CDT	Special Marine Warning	MQT		53 min
Jul 22, 6:33 AM CDT	Severe Thunderstorm Warning	MQT	Marquette	29 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.