Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 22, NWS Duluth, MN

June 12, 2016Saint Louis County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jun 12, 2016, 7:44 PM CDT for Saint Louis County, Minnesota. It was in force for 31 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: Jun 12, 2016, 7:44 PM CDT (00:44 UTC)
Expired: Jun 12, 2016, 8:15 PM CDT
In force: 31 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Saint Louis County, MN

The radar

The Duluth radar (KDLH), 86 km from the middle of the area, began a volume at 00:46 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 00:00Z, 0.7 hours before the alert went out and 317 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: 15 J/kg
Mixed-layer CIN: -443 J/kg
Mixed-layer LCL: 1181 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 375 m²/s²
0-3 km storm-relative helicity: 444 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 Jun 12, 7:18 PM CDT, 26 minutes earlier.

Area forecast discussion, Jun 12, 7:18 PM CDT, 26 minutes before

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Hazardous weather outlook, Jun 12, 3:07 PM CDT, 4 hours 37 minutes before

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In the hours before

Special weather statement, Jun 12, 2:56 PM CDT, 4 hours 48 minutes before

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Special weather statement, Jun 12, 4:25 PM CDT, 3 hours 19 minutes before

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Special weather statement, Jun 12, 5:20 PM CDT, 2 hours 24 minutes before

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Special weather statement, Jun 12, 6:03 PM CDT, 1 hour 41 minutes before

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Special weather statement, Jun 12, 6:51 PM CDT, 53 minutes before

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Special weather statement, Jun 12, 7:34 PM CDT, 10 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
Jun 12, 7:34 PM CDT	Special Weather Statement	DLH	Koochiching, Saint Louis	41 min
Jun 12, 8:14 PM CDT	Areal Flood Advisory	DLH	Itasca, Koochiching, Saint Louis	4 hr
Jun 13, 1:12 AM CDT	Areal Flood Advisory	DLH	Itasca, Koochiching, Saint Louis	9 hr
Jun 13, 3:31 PM CDT	Small Craft Advisory	DLH		53 hr

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.