Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Duluth, MN

October 10, 2021Cass County, Minnesota

NWS Duluth, MN issued this special weather statement at Oct 10, 2021, 8:42 AM CDT for Cass County, Minnesota. It was in force for 33 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: Oct 10, 2021, 8:42 AM CDT (13:42 UTC)
Expired: Oct 10, 2021, 9:15 AM CDT
In force: 33 min
Issued by: NWS Duluth, MN
Hail: 0.25 in
Wind: 30

County Cass County, MN

The radar

The Duluth radar (KDLH), 177 km from the middle of the area, began a volume at 13:44 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 12:00Z, 1.7 hours before the alert went out and 162 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: 1493 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: -10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Oct 10, 7:01 AM CDT, 1 hour 41 minutes earlier.

Area forecast discussion, Oct 10, 7:01 AM CDT, 1 hour 41 minutes before

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Hazardous weather outlook, Oct 10, 5:01 AM CDT, 3 hours 41 minutes before

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In the hours before

Special weather statement, Oct 10, 4:18 AM CDT, 4 hours 24 minutes before

Special Weather Statement
National Weather Service Duluth MN
418 AM CDT Sun Oct 10 2021

MNZ019-037-100945-
Central St. Louis MN-Carlton/South St. Louis MN-
418 AM CDT Sun Oct 10 2021

...A strong thunderstorm will impact portions of south central St.
Louis and northeastern Carlton Counties through 445 AM CDT...

At 417 AM CDT, Doppler radar was tracking a strong thunderstorm over
Cloquet, moving north at 35 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow unsecured
         objects around. Minor hail damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Saginaw around 430 AM CDT.

Other locations in the path of this storm include Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors, including anyone on or in the water, should seek
shelter inside a sturdy building or hard topped vehicle.

Frequent cloud to ground lightning is occurring with this storm. If
you can hear thunder, you are close enough to be struck by lightning.
Seek a safe shelter inside a building or vehicle.

&&

LAT...LON 4664 9236 4668 9261 4709 9254 4703 9216
TIME...MOT...LOC 0917Z 192DEG 29KT 4676 9252

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

Huyck

Special weather statement, Oct 10, 8:42 AM 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
Oct 9, 8:23 PM CDT	Special Weather Statement	DLH	Cook	37 min
Oct 10, 4:18 AM CDT	Special Weather Statement	DLH	Carlton	27 min
Oct 10, 10:34 AM CDT	Special Weather Statement	DLH	Koochiching	26 min
Oct 10, 12:30 PM CDT	Special Weather Statement	DLH	Itasca	15 min
Oct 10, 12:31 PM CDT	Special Weather Statement	DLH	Itasca	14 min
Oct 10, 12:47 PM CDT	Special Weather Statement	DLH	Itasca	28 min
Oct 10, 12:48 PM CDT	Special Weather Statement	DLH	Itasca	27 min
Oct 10, 1:27 PM CDT	Special Weather Statement	DLH	Itasca	33 min
Oct 10, 1:50 PM CDT	Special Weather Statement	DLH	Itasca	25 min
Oct 10, 2:11 PM CDT	Special Weather Statement	DLH	Saint Louis	34 min
Oct 10, 2:17 PM CDT	Special Weather Statement	DLH	Saint Louis	13 min
Oct 10, 2:26 PM CDT	Tornado Warning	DLH	Itasca, Koochiching, Saint Louis	34 min
Oct 10, 2:31 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	29 min
Oct 10, 2:42 PM CDT	Tornado Warning	DLH	Saint Louis	18 min
Oct 10, 3:02 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	28 min
Oct 10, 3:07 PM CDT	Special Weather Statement	DLH	Koochiching	23 min
Oct 10, 3:09 PM CDT	Special Weather Statement	DLH		21 min
Oct 10, 3:14 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	31 min
Oct 10, 3:18 PM CDT	Special Marine Warning	DLH		87 min
Oct 10, 3:27 PM CDT	Special Weather Statement	DLH	Saint Louis	18 min
Oct 10, 3:41 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	49 min
Oct 10, 4:05 PM CDT	Special Weather Statement	DLH		25 min
Oct 10, 4:09 PM CDT	Special Weather Statement	DLH	Lake	21 min
Oct 10, 4:12 PM CDT	Special Weather Statement	DLH		18 min
Oct 10, 4:19 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	26 min
Oct 10, 4:28 PM CDT	Special Weather Statement	DLH	Cook	32 min
Oct 10, 4:31 PM CDT	Small Craft Advisory	DLH		20 hr
Oct 10, 4:31 PM CDT	Special Weather Statement	DLH	Lake	29 min
Oct 10, 4:33 PM CDT	Special Weather Statement	DLH		27 min
Oct 10, 4:43 PM CDT	Special Weather Statement	DLH		32 min
Oct 10, 4:57 PM CDT	Special Weather Statement	DLH	Lake	33 min
Oct 10, 5:04 PM CDT	Special Marine Warning	DLH		56 min
Oct 10, 5:15 PM CDT	Special Weather Statement	DLH		30 min
Oct 10, 5:26 PM CDT	Special Weather Statement	DLH	Lake	34 min
Oct 10, 5:28 PM CDT	Severe Thunderstorm Warning	DLH	Cook	47 min
Oct 10, 5:36 PM CDT	Tornado Warning	DLH	Cook	39 min
Oct 10, 5:40 PM CDT	Special Weather Statement	DLH	Cook	35 min
Oct 10, 6:15 PM CDT	Special Weather Statement	DLH	Cook	45 min
Oct 10, 6:30 PM CDT	Special Marine Warning	DLH		60 min
Oct 10, 12:14 AM CDT	Special Weather Statement	DLH	Price	31 min
Oct 10, 12:54 AM CDT	Special Weather Statement	DLH	Price	36 min
Oct 10, 1:14 AM CDT	Special Weather Statement	DLH	Price	16 min
Oct 10, 1:28 AM CDT	Special Weather Statement	DLH	Price	17 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.