Alert archive / Michigan / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 18, NWS Marquette, MI

August 2, 2015Houghton County, Ontonagon County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Aug 2, 2015, 6:05 AM EDT for Houghton County, Ontonagon 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: Aug 2, 2015, 6:05 AM EDT (10:05 UTC)
Expired: Aug 2, 2015, 6:45 AM EDT
In force: 40 min
Issued by: NWS Marquette, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Houghton County, MI, Ontonagon County, MI

The radar

The Marquette radar (KMQT), 116 km from the middle of the area, began a volume at 10:08 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 10.1 hours before the alert went out and 276 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: 2235 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

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 Aug 1, 7:48 PM EDT, 10 hours 17 minutes earlier.

Area forecast discussion, Aug 1, 7:48 PM EDT, 10 hours 17 minutes before

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Hazardous weather outlook, Aug 1, 3:47 PM EDT, 14 hours 18 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 5:26 AM EDT	Special Weather Statement	MQT		34 min
Aug 2, 5:49 AM EDT	Special Weather Statement	MQT	Ontonagon	56 min
Aug 2, 6:40 AM EDT	Special Weather Statement	MQT	Baraga	50 min
Aug 2, 6:52 AM EDT	Severe Thunderstorm Warning	MQT	Baraga	38 min
Aug 2, 7:06 AM EDT	Severe Thunderstorm Warning	MQT	Baraga, Iron, Marquette	39 min
Aug 2, 7:15 AM EDT	Special Weather Statement	MQT	Iron	45 min
Aug 2, 7:41 AM EDT	Severe Thunderstorm Warning	MQT	Dickinson, Marquette	35 min
Aug 2, 7:57 AM EDT	Severe Thunderstorm Warning	MQT	Alger, Delta, Menominee	48 min
Aug 2, 8:06 AM EDT	Special Marine Warning	MQT		84 min
Aug 2, 8:13 AM EDT	Severe Thunderstorm Warning	MQT	Alger, Delta, Schoolcraft	47 min
Aug 2, 8:35 AM EDT	Severe Thunderstorm Warning	MQT	Delta, Menominee	32 min
Aug 2, 9:37 AM EDT	Special Weather Statement	MQT	Menominee	23 min
Aug 2, 10:44 AM EDT	Special Weather Statement	MQT	Iron	46 min
Aug 2, 11:00 AM EDT	Special Weather Statement	MQT	Iron	45 min
Aug 2, 11:28 AM EDT	Special Weather Statement	MQT	Dickinson	47 min
Aug 2, 12:33 PM EDT	Special Weather Statement	MQT	Menominee	27 min
Aug 2, 1:38 PM EDT	Special Weather Statement	MQT	Dickinson	52 min
Aug 2, 2:30 PM EDT	Special Weather Statement	MQT	Menominee	45 min
Aug 2, 2:38 PM EDT	Severe Thunderstorm Warning	MQT	Menominee	37 min
Aug 2, 3:02 PM EDT	Special Marine Warning	MQT		43 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.