Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 109, NWS Duluth, MN

July 17, 2016Cook County, Lake County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jul 17, 2016, 1:55 PM CDT for Cook County, Lake County, Minnesota. It was in force for 35 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 17, 2016, 1:55 PM CDT (18:55 UTC)
Expired: Jul 17, 2016, 2:30 PM CDT
In force: 35 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cook County, MN, Lake County, MN

The radar

The Duluth radar (KDLH), 131 km from the middle of the area, began a volume at 18:55 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, 6.9 hours before the alert went out and 373 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: 1243 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 129 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 Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 12:50 PM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, Jul 17, 12:50 PM CDT, 1 hour 5 minutes before

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Hazardous weather outlook, Jul 17, 3:52 AM CDT, 10 hours 3 minutes before

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In the hours before

Special weather statement, Jul 17, 10:28 AM CDT, 3 hours 27 minutes before

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Special weather statement, Jul 17, 12:18 PM CDT, 1 hour 37 minutes before

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Special weather statement, Jul 17, 12:39 PM CDT, 1 hour 16 minutes before

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Special weather statement, Jul 17, 12:58 PM CDT, 57 minutes before

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Special weather statement, Jul 17, 1:27 PM CDT, 28 minutes before

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Special weather statement, Jul 17, 1:33 PM CDT, 22 minutes before

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The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 6:26 AM CDT	Special Weather Statement	DLH	Cass, Crow Wing	34 min
Jul 17, 6:54 AM CDT	Special Weather Statement	DLH	Crow Wing	36 min
Jul 17, 9:01 AM CDT	Special Weather Statement	DLH	Koochiching	29 min
Jul 17, 9:28 AM CDT	Special Weather Statement	DLH	Koochiching	32 min
Jul 17, 10:02 AM CDT	Special Weather Statement	DLH		28 min
Jul 17, 10:28 AM CDT	Special Weather Statement	DLH		32 min
Jul 17, 12:18 PM CDT	Special Weather Statement	DLH		42 min
Jul 17, 12:39 PM CDT	Special Weather Statement	DLH	Itasca	21 min
Jul 17, 12:58 PM CDT	Special Weather Statement	DLH	Itasca	32 min
Jul 17, 1:27 PM CDT	Special Weather Statement	DLH	Saint Louis	48 min
Jul 17, 1:33 PM CDT	Special Weather Statement	DLH		27 min
Jul 17, 2:07 PM CDT	Special Weather Statement	DLH	Saint Louis	23 min
Jul 17, 2:19 PM CDT	Special Weather Statement	DLH	Cook	26 min
Jul 17, 2:32 PM CDT	Special Weather Statement	DLH	Cook	13 min
Jul 17, 2:42 PM CDT	Special Weather Statement	DLH	Cook	48 min
Jul 17, 2:44 PM CDT	Special Marine Warning	DLH		31 min
Jul 17, 3:08 PM CDT	Special Marine Warning	DLH		37 min
Jul 17, 3:53 PM CDT	Special Marine Warning	DLH		67 min
Jul 17, 4:16 PM CDT	Special Weather Statement	DLH		29 min
Jul 17, 4:20 PM CDT	Special Weather Statement	DLH	Itasca	25 min
Jul 17, 4:49 PM CDT	Special Weather Statement	DLH		26 min
Jul 17, 4:52 PM CDT	Special Weather Statement	DLH	Saint Louis	23 min
Jul 17, 5:03 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	27 min
Jul 17, 5:19 PM CDT	Special Weather Statement	DLH	Saint Louis	26 min
Jul 17, 5:39 PM CDT	Special Weather Statement	DLH	Saint Louis	36 min
Jul 17, 5:41 PM CDT	Special Weather Statement	DLH	Lake	34 min
Jul 17, 6:10 PM CDT	Special Weather Statement	DLH	Cook, Lake	35 min
Jul 17, 6:39 PM CDT	Special Weather Statement	DLH	Lake	36 min
Jul 17, 3:36 PM CDT	Special Weather Statement	DLH	Bayfield	39 min
Jul 17, 3:51 PM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield	24 min
Jul 17, 4:11 PM CDT	Severe Thunderstorm Warning	DLH	Ashland	19 min
Jul 17, 4:31 PM CDT	Special Weather Statement	DLH	Ashland	29 min
Jul 17, 4:54 PM CDT	Special Weather Statement	DLH	Ashland	36 min
Jul 17, 5:25 PM CDT	Special Weather Statement	DLH	Iron	35 min
Jul 17, 6:01 PM CDT	Special Weather Statement	DLH	Iron	14 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2016 Every severe thunderstorm warning in 2016

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.