Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Duluth, MN

July 27, 2021Aitkin County, Minnesota

NWS Duluth, MN issued this special weather statement at Jul 27, 2021, 3:45 AM CDT for Aitkin County, Minnesota. It was in force for 15 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
Jul 27, 2021, 3:45 AM CDT (08:45 UTC)
Expired
Jul 27, 2021, 4:00 AM CDT
In force
15 min
Issued by
NWS Duluth, MN

County Aitkin County, MN

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 8.8 hours before the alert went out and 164 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2021-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1670 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2021-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1670 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
1398 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.2
Supercell composite
5.9

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 Jul 27, 12:28 AM CDT, 3 hours 17 minutes earlier.

Area forecast discussion, Jul 27, 12:28 AM CDT, 3 hours 17 minutes before
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Hazardous weather outlook, Jul 26, 10:04 PM CDT, 5 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Duluth MN
1004 PM CDT Mon Jul 26 2021

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-271030-
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-
1004 PM CDT Mon Jul 26 2021

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

.DAY ONE...Tonight

Scattered thunderstorms will continue through the night. Gusty
winds, occasional lightning, heavy rain will accompany the
stronger storms.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A strong thunderstorm or two may be ongoing early Tuesday
morning. The chance of thunderstorms returns late Tuesday night
and continues through Wednesday night. A few storms may be strong
to severe mainly along and south of US Highway 2 in Minnesota and
Wisconsin. Large hail and damaging winds are the main threats with
the strongest storms.

There is a slight chance of isolated thunderstorms Friday
afternoon and evening over portions of northern Minnesota, and
Saturday afternoon and evening over portions of northwest
Wisconsin.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotters are encouraged to report hail of any size, wind
damage, and rainfall amounts to the National Weather Service.

LSZ121-140>148-150-271030-
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-
1004 PM CDT Mon Jul 26 2021

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

.DAY ONE...Tonight

Thunderstorms are likely and some may be strong, wind gusts to 60
knots, frequent cloud- to- water lightning, and torrential
rainfall which may reduce visibility to less than one- quarter
mile.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There is another chance of thunderstorms Wednesday and Wednesday
night. A few storms may be strong to severe once again.

GSF

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, Jul 27, 12:06 AM CDT, 3 hours 39 minutes before
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Special weather statement, Jul 27, 1:51 AM CDT, 1 hour 54 minutes before
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Special weather statement, Jul 27, 2:00 AM CDT, 1 hour 45 minutes before
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Special weather statement, Jul 27, 2:14 AM CDT, 1 hour 31 minutes before
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Special weather statement, Jul 27, 3:14 AM CDT, 31 minutes before
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Special weather statement, Jul 27, 3:45 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 7:13 PM CDTSevere Thunderstorm WarningDLHAitkin, Itasca, Saint Louis47 min
Jul 26, 7:14 PM CDTSevere Thunderstorm WarningDLHAitkin, Cass, Itasca16 min
Jul 26, 7:18 PM CDTSpecial Weather StatementDLHCarlton27 min
Jul 26, 7:29 PM CDTSevere Thunderstorm WarningDLHAitkin, Itasca31 min
Jul 26, 7:30 PM CDTSevere Thunderstorm WarningDLHCarlton, Saint Louis60 min
Jul 26, 7:34 PM CDTSpecial Marine WarningDLH56 min
Jul 26, 7:47 PM CDTSpecial Weather StatementDLHItasca28 min
Jul 26, 7:53 PM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Pine, Saint Louis52 min
Jul 26, 8:11 PM CDTSpecial Weather StatementDLHItasca34 min
Jul 26, 8:26 PM CDTSpecial Marine WarningDLH49 min
Jul 26, 8:41 PM CDTSpecial Weather StatementDLHItasca34 min
Jul 26, 8:49 PM CDTSevere Thunderstorm WarningDLHItasca, Saint Louis26 min
Jul 26, 9:02 PM CDTSevere Thunderstorm WarningDLHItasca, Saint Louis27 min
Jul 26, 9:14 PM CDTSevere Thunderstorm WarningDLHCass, Itasca31 min
Jul 26, 11:38 PM CDTSpecial Marine WarningDLH35 min
Jul 27, 3:59 AM CDTSpecial Weather StatementDLHAitkin16 min
Jul 26, 8:16 PM CDTSpecial Weather StatementDLHAshland, Bayfield, Douglas29 min
Jul 26, 8:43 PM CDTSpecial Weather StatementDLHAshland, Iron47 min
Jul 26, 9:25 PM CDTSpecial Weather StatementDLHIron, Price, Sawyer, Washburn50 min
Jul 26, 10:11 PM CDTSpecial Weather StatementDLHPrice49 min
Jul 26, 10:56 PM CDTSevere Thunderstorm WarningDLHBayfield, Douglas34 min
Jul 26, 11:20 PM CDTSevere Thunderstorm WarningDLHBayfield, Douglas25 min
Jul 26, 11:42 PM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Price, Sawyer48 min
Jul 26, 11:47 PM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Sawyer43 min
Jul 26, 11:50 PM CDTSpecial Weather StatementDLHBayfield25 min
Jul 27, 12:06 AM CDTSpecial Weather StatementDLHPrice9 min
Jul 27, 12:25 AM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Price, Sawyer50 min
Jul 27, 12:49 AM CDTSevere Thunderstorm WarningDLHBayfield, Douglas, Sawyer, Washburn41 min
Jul 27, 1:27 AM CDTSevere Thunderstorm WarningDLHPrice, Sawyer, Washburn33 min
Jul 27, 1:51 AM CDTSpecial Weather StatementDLHPrice9 min
Jul 27, 2:00 AM CDTSpecial Weather StatementDLHPrice15 min
Jul 27, 2:14 AM CDTSpecial Weather StatementDLHPrice16 min
Jul 27, 3:14 AM CDTSpecial Weather StatementDLHAshland16 min
Jul 27, 5:35 AM CDTSpecial Weather StatementDLHWashburn10 min

Nearby

Special Weather Statements in Minnesota, 2021Every 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.