Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 30, NWS Duluth, MN

June 13, 2017Itasca County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jun 13, 2017, 9:10 PM CDT for Itasca 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: Jun 13, 2017, 9:10 PM CDT (02:10 UTC)
Expired: Jun 13, 2017, 9:45 PM CDT
In force: 35 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Itasca County, MN

The radar

The Duluth radar (KDLH), 131 km from the middle of the area, began a volume at 02:12 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

International Fa, MN (KINL), launched 00:00Z, 2.2 hours before the alert went out and 120 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: 925 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 287 m²/s²
0-3 km storm-relative helicity: 453 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 Jun 13, 6:33 PM CDT, 2 hours 37 minutes earlier.

Area forecast discussion, Jun 13, 6:33 PM CDT, 2 hours 37 minutes before

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Hazardous weather outlook, Jun 13, 8:00 PM CDT, 1 hour 10 minutes before

Hazardous Weather Outlook
National Weather Service Duluth MN
800 PM CDT Tue Jun 13 2017

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-140845-
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-
800 PM CDT Tue Jun 13 2017

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

.DAY ONE...Tonight

Thunderstorms will affect northeast Minnesota late through
tonight, and move into northwest Wisconsin late tonight. Severe
storms are possible. Damaging winds and large hail are the main
hazards. Frequent lightning and heavy rains will occur.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms are possible across northeast Minnesota and
northwest Wisconsin Wednesday through Wednesday evening,
especially later in the day. Some storms could be strong to
severe. The greatest threat for severe weather within the
Northland is for areas of the region generally east of north
central and central Minnesota along and ahead of a front that will
me moving from west to east through the Northland. The strongest
storms will be capable of large hail, damaging winds, and heavy
rain.

There are low chances of storms across northwest Wisconsin and
nearby areas of Minnesota Friday afternoon and early evening. The
storms will likely be relatively weak.

There are low chances of storms Saturday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Skywarn Spotters may be needed tonight. Additionally...any reports
of hail, wind damage, and rainfall amounts are appreciated.

LSZ121-140>148-140845-
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-
800 PM CDT Tue Jun 13 2017

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

.DAY ONE...Tonight

Strong east to northeast flow and resulting waves over western
Lake Superior will continue to result in hazardous conditions for
small craft through tonight or Wednesday morning. The winds and
waves will gradually subside late tonight through Wednesday
morning. Small Craft Advisories are in effect. Please read the
latest marine weather message for more information. Thunderstorms
are possible across all of western Lake Superior tonight. Some
storms could be strong or severe, with large hail, strong winds
and locally high wave heights.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms are possible across western Lake Superior Wednesday
afternoon and evening. Some of the storms could be strong to
severe
with large hail, damaging winds, and heavy rain.

More storms are possible Saturday afternoon and evening.

JJM

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, Jun 13, 7:50 PM CDT, 1 hour 20 minutes before

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Special weather statement, Jun 13, 8:12 PM CDT, 58 minutes before

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Special weather statement, Jun 13, 8:33 PM CDT, 37 minutes before

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Special weather statement, Jun 13, 8:46 PM CDT, 24 minutes before

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Local storm report, Jun 13, 8:51 PM CDT, 19 minutes before

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Local storm report, Jun 13, 8:55 PM CDT, 15 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 13, 7:13 PM CDT	Special Weather Statement	DLH	Itasca	17 min
Jun 13, 7:50 PM CDT	Special Weather Statement	DLH	Itasca	10 min
Jun 13, 8:12 PM CDT	Special Weather Statement	DLH	Itasca	33 min
Jun 13, 8:33 PM CDT	Special Weather Statement	DLH	Saint Louis	12 min
Jun 13, 8:46 PM CDT	Special Weather Statement	DLH	Saint Louis	29 min
Jun 13, 9:46 PM CDT	Severe Thunderstorm Warning	DLH	Itasca	44 min
Jun 13, 10:07 PM CDT	Special Weather Statement	DLH	Cass, Crow Wing	8 min
Jun 13, 10:22 PM CDT	Special Weather Statement	DLH	Wadena	8 min
Jun 13, 10:30 PM CDT	Special Weather Statement	DLH	Cass	15 min
Jun 13, 10:36 PM CDT	Special Weather Statement	DLH	Saint Louis	9 min
Jun 13, 10:47 PM CDT	Special Weather Statement	DLH	Cass, Crow Wing	28 min
Jun 13, 10:49 PM CDT	Special Weather Statement	DLH	Saint Louis	26 min
Jun 13, 11:17 PM CDT	Special Weather Statement	DLH	Cass, Crow Wing	28 min
Jun 13, 11:33 PM CDT	Special Weather Statement	DLH	Koochiching	27 min
Jun 13, 11:45 PM CDT	Special Weather Statement	DLH	Aitkin, Itasca	30 min
Jun 13, 11:49 PM CDT	Special Weather Statement	DLH		26 min
Jun 14, 12:10 AM CDT	Special Weather Statement	DLH	Aitkin, Pine	35 min
Jun 14, 12:12 AM CDT	Special Weather Statement	DLH	Itasca, Koochiching	33 min
Jun 14, 12:38 AM CDT	Special Weather Statement	DLH	Lake	37 min
Jun 14, 12:42 AM CDT	Special Weather Statement	DLH	Carlton, Pine	33 min
Jun 14, 12:46 AM CDT	Special Weather Statement	DLH	Saint Louis	29 min
Jun 14, 1:10 AM CDT	Special Weather Statement	DLH	Lake	35 min
Jun 14, 1:13 AM CDT	Special Weather Statement	DLH	Carlton	32 min
Jun 14, 1:45 AM CDT	Special Weather Statement	DLH	Lake	30 min
Jun 14, 2:17 AM CDT	Special Weather Statement	DLH	Lake	28 min
Jun 14, 2:41 AM CDT	Special Weather Statement	DLH	Cook	34 min
Jun 14, 3:13 AM CDT	Special Weather Statement	DLH	Cook	17 min
Jun 14, 3:25 AM CDT	Special Weather Statement	DLH	Cook	35 min
Jun 14, 3:53 AM CDT	Beach Hazards Statement	DLH	Carlton, Saint Louis	16 hr
Jun 14, 3:55 AM CDT	Special Weather Statement	DLH	Cook	35 min
Jun 14, 5:22 PM CDT	Special Weather Statement	DLH		8 min
Jun 14, 6:39 PM CDT	Special Weather Statement	DLH		21 min
Jun 14, 6:53 PM CDT	Special Weather Statement	DLH		22 min
Jun 14, 1:43 AM CDT	Special Weather Statement	DLH	Douglas, Washburn	32 min
Jun 14, 2:14 AM CDT	Special Weather Statement	DLH	Bayfield, Douglas, Sawyer, Washburn	31 min
Jun 14, 2:47 AM CDT	Special Weather Statement	DLH	Bayfield, Sawyer	28 min
Jun 14, 6:32 PM CDT	Special Weather Statement	DLH	Burnett	13 min
Jun 14, 6:43 PM CDT	Special Weather Statement	DLH	Washburn	17 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.