Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Duluth, MN

June 23, 2021Itasca County, Minnesota

NWS Duluth, MN issued this special weather statement at Jun 23, 2021, 11:32 PM CDT for Itasca County, Minnesota. It was in force for 13 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 23, 2021, 11:32 PM CDT (04:32 UTC)
Expired: Jun 23, 2021, 11:45 PM CDT
In force: 13 min
Issued by: NWS Duluth, MN

County Itasca County, MN

The radar

The Duluth radar (KDLH), 156 km from the middle of the area, began a volume at 04:34 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, 4.5 hours before the alert went out and 123 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: 230 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 2027 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 295 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 23, 9:07 PM CDT, 2 hours 25 minutes earlier.

Area forecast discussion, Jun 23, 9:07 PM CDT, 2 hours 25 minutes before

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Hazardous weather outlook, Jun 23, 9:33 PM CDT, 1 hour 59 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Duluth MN
933 PM CDT Wed Jun 23 2021

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-241130-
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-
933 PM CDT Wed Jun 23 2021

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

.DAY ONE...Tonight

Scattered thunderstorms this evening will become more widespread
overnight. Strong to severe storms are possible, with the greatest
risk south of a line from near Cass Lake to Grand Rapids to
Embarrass to Snow Bank Lake, including the Twin Ports, Brainerd
Lakes, and all of northwest Wisconsin. Large hail to a inch and a
half in diameter, damaging wind gusts to 65 mph, torrential
rainfall which may cause localized minor flooding, and frequent
cloud-to-ground lightning are possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thunderstorms will likely be ongoing Thursday morning near the
I-35 corridor of east-central Minnesota and over northwest
Wisconsin. A few storms may be strong during the morning. Storms
will redevelop along a cold front during the afternoon. Should
storms develop early enough, there will be a risk of severe
thunderstorms for a portion of northwest Wisconsin, including
Sawyer, Price, Ashland, and Iron counties, mainly south of a line
from around Exeland to Butternut to Hurley.

There are several chances of thunderstorms Friday evening through
early next week. While widespread severe weather is not
anticipated, a few storms may be strong.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters may be needed overnight through late Thursday
morning, and again Thursday afternoon.

LSZ121-140>148-150-241130-
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-
Outer Apostle Islands Beyond 5 NM from Mainland-
933 PM CDT Wed Jun 23 2021

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

.DAY ONE...Tonight

Scattered thunderstorms are likely after midnight over western
Lake Superior. Some storms may be severe with hail to one and a
half inches in diameter, frequent cloud-to-water lightning,
torrential rainfall which will reduce visibility to less than 1
mile, and gusty winds of up to 55 knots.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thunderstorms may be ongoing Thursday morning and should weaken
and move onshore by late morning. A few storms may be strong to
severe.

There will be several more chances of thunderstorms over the
weekend and early next week. While widespread severe weather is
not anticipated at this time, a few storms may be strong.

Huyck

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 23, 5:49 PM CDT, 5 hours 43 minutes before

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Special weather statement, Jun 23, 9:13 PM CDT, 2 hours 19 minutes before

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Special weather statement, Jun 23, 9:42 PM CDT, 1 hour 50 minutes before

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Special weather statement, Jun 23, 11:32 PM CDT, 0 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 23, 11:55 PM CDT	Special Weather Statement	DLH	Itasca	20 min
Jun 24, 12:22 AM CDT	Special Weather Statement	DLH	Saint Louis	23 min
Jun 24, 12:26 AM CDT	Special Weather Statement	DLH	Saint Louis	19 min
Jun 24, 12:47 AM CDT	Special Weather Statement	DLH	Saint Louis	13 min
Jun 24, 1:00 AM CDT	Special Weather Statement	DLH	Saint Louis	15 min
Jun 24, 1:11 AM CDT	Special Weather Statement	DLH	Saint Louis	19 min
Jun 24, 1:15 AM CDT	Special Weather Statement	DLH	Lake	15 min
Jun 24, 1:16 AM CDT	Special Weather Statement	DLH	Saint Louis	14 min
Jun 24, 1:24 AM CDT	Special Weather Statement	DLH	Saint Louis	36 min
Jun 24, 1:30 AM CDT	Special Weather Statement	DLH	Lake	30 min
Jun 24, 1:35 AM CDT	Special Marine Warning	DLH		55 min
Jun 24, 2:04 AM CDT	Special Weather Statement	DLH		26 min
Jun 24, 2:44 AM CDT	Special Marine Warning	DLH		46 min
Jun 24, 2:47 AM CDT	Special Weather Statement	DLH	Carlton	13 min
Jun 24, 2:57 AM CDT	Special Weather Statement	DLH	Carlton	18 min
Jun 24, 3:11 AM CDT	Special Weather Statement	DLH	Pine	34 min
Jun 24, 1:44 AM CDT	Special Weather Statement	DLH	Burnett	31 min
Jun 24, 1:57 AM CDT	Special Weather Statement	DLH	Burnett	33 min
Jun 24, 2:01 AM CDT	Special Weather Statement	DLH	Douglas	29 min
Jun 24, 2:13 AM CDT	Special Weather Statement	DLH	Bayfield	32 min
Jun 24, 2:29 AM CDT	Special Weather Statement	DLH	Douglas	16 min
Jun 24, 2:38 AM CDT	Special Weather Statement	DLH	Washburn	37 min
Jun 24, 2:43 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield	32 min
Jun 24, 2:50 AM CDT	Special Weather Statement	DLH	Bayfield, Douglas	25 min
Jun 24, 3:18 AM CDT	Special Weather Statement	DLH	Douglas	27 min
Jun 24, 3:25 AM CDT	Special Weather Statement	DLH	Price	35 min
Jun 24, 3:47 AM CDT	Special Weather Statement	DLH	Burnett, Washburn	28 min
Jun 24, 3:54 AM CDT	Severe Thunderstorm Warning	DLH	Burnett, Sawyer, Washburn	36 min
Jun 24, 4:03 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield, Douglas	27 min
Jun 24, 4:25 AM CDT	Special Weather Statement	DLH	Washburn	35 min
Jun 24, 4:32 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield, Sawyer	28 min
Jun 24, 4:59 AM CDT	Special Weather Statement	DLH	Ashland	31 min
Jun 24, 7:33 AM CDT	Special Weather Statement	DLH	Iron	27 min
Jun 24, 2:57 PM CDT	Special Weather Statement	DLH	Rusk	33 min

Nearby

Special Weather Statements in Minnesota, 2021 Every special weather statement in 2021

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.