Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 10, NWS Duluth, MN

May 28, 2017Douglas County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at May 28, 2017, 10:50 AM CDT for Douglas County, Wisconsin. 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: May 28, 2017, 10:50 AM CDT (15:50 UTC)
Expired: May 28, 2017, 11:30 AM CDT
In force: 40 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Douglas County, WI

The radar

The Duluth radar (KDLH), 48 km from the middle of the area, began a volume at 15:52 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, 3.8 hours before the alert went out and 223 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: 1182 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 110 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 May 28, 8:34 AM CDT, 2 hours 16 minutes earlier.

Area forecast discussion, May 28, 8:34 AM CDT, 2 hours 16 minutes before

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Hazardous weather outlook, May 28, 3:35 AM CDT, 7 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Duluth MN
335 AM CDT Sun May 28 2017

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-290900-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
335 AM CDT Sun May 28 2017

This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.

.DAY ONE...Today and Tonight

Isolated to scattered thunderstorms are forecast across northeast
Minnesota and northwest Wisconsin late this morning through early
this evening. Brief strong storms, capable of gusty winds and
small hail, will likely develop in the afternoon.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There could be rumbles of thunder in the Minnesota Arrowhead
Monday afternoon.

.SPOTTER INFORMATION STATEMENT...

Skywarn Spotters may be needed to report hail and gusty winds with
thunderstorms this afternoon.

LSZ121-140>148-290900-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
335 AM CDT Sun May 28 2017

This Hazardous Weather Outlook is for portions of the Nearshore
waters of western Lake Superior.

.DAY ONE...Today and Tonight

Thunderstorms are possible along and near the shores of western
Lake Superior today. Some storms could be strong with gusty winds
and small hail.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected at this time.

Melde/Grochocinski

More information may be obtained at the following web address:
http://www.weather.gov/duluth (all lower case)

In the hours before

Special weather statement, May 28, 9:32 AM CDT, 1 hour 18 minutes before

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Local storm report, May 28, 9:34 AM CDT, 1 hour 16 minutes before

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Local storm report, May 28, 9:35 AM CDT, 1 hour 15 minutes before

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Special weather statement, May 28, 9:54 AM CDT, 56 minutes before

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Local storm report, May 28, 10:26 AM CDT, 24 minutes before

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Special weather statement, May 28, 10:30 AM CDT, 20 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
May 28, 9:54 AM CDT	Special Weather Statement	DLH	Carlton	36 min
May 28, 10:30 AM CDT	Special Weather Statement	DLH	Carlton	30 min
May 28, 5:48 PM CDT	Special Weather Statement	DLH	Aitkin	27 min
May 28, 5:56 PM CDT	Special Weather Statement	DLH	Lake	34 min
May 28, 6:19 PM CDT	Special Weather Statement	DLH	Aitkin	26 min
May 28, 6:53 PM CDT	Special Weather Statement	DLH	Pine	22 min
May 28, 9:32 AM CDT	Special Weather Statement	DLH	Sawyer	58 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2017 Every severe thunderstorm warning in 2017

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.