Alert archive / Michigan / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 47, NWS Marquette, MI

August 1, 2018Schoolcraft County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Aug 1, 2018, 4:41 PM EDT for Schoolcraft County, Michigan. It was in force for 34 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 1, 2018, 4:41 PM EDT (20:41 UTC)
Expired: Aug 1, 2018, 5:15 PM EDT
In force: 34 min
Issued by: NWS Marquette, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Schoolcraft County, MI

The radar

The Marquette radar (KMQT), 119 km from the middle of the area, began a volume at 20:42 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 12:00Z, 8.7 hours before the alert went out and 230 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: 359 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1414 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -26 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 Aug 1, 3:48 PM EDT, 53 minutes earlier.

Area forecast discussion, Aug 1, 3:48 PM EDT, 53 minutes before

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Hazardous weather outlook, Aug 1, 4:03 PM EDT, 38 minutes before

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In the hours before

Special weather statement, Aug 1, 3:19 PM EDT, 1 hour 22 minutes before

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Local storm report, Aug 1, 3:22 PM EDT, 1 hour 19 minutes before

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Special weather statement, Aug 1, 3:25 PM EDT, 1 hour 16 minutes before

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Local storm report, Aug 1, 3:44 PM EDT, 57 minutes before

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Special weather statement, Aug 1, 3:47 PM EDT, 54 minutes before

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Special weather statement, Aug 1, 4:08 PM EDT, 33 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
Aug 1, 3:57 AM EDT	Beach Hazards Statement	MQT	Alger, Marquette	16 hr
Aug 1, 9:28 AM EDT	Special Weather Statement	MQT	Houghton	47 min
Aug 1, 1:08 PM EDT	Special Weather Statement	MQT	Dickinson	52 min
Aug 1, 1:14 PM EDT	Special Weather Statement	MQT	Menominee	31 min
Aug 1, 1:26 PM EDT	Special Weather Statement	MQT	Dickinson	34 min
Aug 1, 1:56 PM EDT	Special Weather Statement	MQT	Dickinson	49 min
Aug 1, 2:06 PM EDT	Special Weather Statement	MQT	Dickinson	39 min
Aug 1, 2:14 PM EDT	Special Weather Statement	MQT	Luce	46 min
Aug 1, 2:37 PM EDT	Areal Flood Advisory	MQT	Luce	3 hr
Aug 1, 2:42 PM EDT	Special Weather Statement	MQT	Menominee	33 min
Aug 1, 2:43 PM EDT	Special Weather Statement	MQT	Delta	62 min
Aug 1, 2:47 PM EDT	Severe Thunderstorm Warning	MQT	Dickinson, Menominee	28 min
Aug 1, 3:19 PM EDT	Special Weather Statement	MQT	Delta	41 min
Aug 1, 3:22 PM EDT	Severe Thunderstorm Warning	MQT	Delta	23 min
Aug 1, 3:25 PM EDT	Special Weather Statement	MQT	Menominee	50 min
Aug 1, 3:47 PM EDT	Special Weather Statement	MQT	Delta	28 min
Aug 1, 4:08 PM EDT	Special Weather Statement	MQT	Schoolcraft	52 min
Aug 1, 4:45 PM EDT	Special Marine Warning	MQT		30 min
Aug 1, 5:15 PM EDT	Special Weather Statement	MQT	Schoolcraft	45 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2018 Every severe thunderstorm warning in 2018

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.