Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 68, NWS Duluth, MN

June 28, 2018Aitkin County, Cass County, Itasca County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jun 28, 2018, 3:55 PM CDT for Aitkin County, Cass County, Itasca County, Minnesota. It was in force for 50 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 28, 2018, 3:55 PM CDT (20:55 UTC)
Expired: Jun 28, 2018, 4:45 PM CDT
In force: 50 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Aitkin County, MN, Cass County, MN, Itasca County, MN

The radar

The Duluth radar (KDLH), 122 km from the middle of the area, began a volume at 20:55 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 28, 1:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 8.9 hours before the alert went out and 176 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: 2670 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 204 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 28, 1:50 PM CDT, 2 hours 5 minutes earlier.

Area forecast discussion, Jun 28, 1:50 PM CDT, 2 hours 5 minutes before

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Hazardous weather outlook, Jun 28, 3:24 PM CDT, 31 minutes before

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In the hours before

Local storm report, Jun 28, 3:16 PM CDT, 39 minutes before

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Special weather statement, Jun 28, 3:20 PM CDT, 35 minutes before

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Local storm report, Jun 28, 3:41 PM CDT, 14 minutes before

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Special weather statement, Jun 28, 3:43 PM CDT, 12 minutes before

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Local storm report, Jun 28, 3:47 PM CDT, 8 minutes before

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Local storm report, Jun 28, 3:54 PM CDT, 1 minute 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 27, 7:03 PM CDT	Special Weather Statement	DLH	Lake	27 min
Jun 27, 7:45 PM CDT	Special Weather Statement	DLH		30 min
Jun 27, 8:59 PM CDT	Special Weather Statement	DLH	Carlton	31 min
Jun 28, 8:50 AM CDT	Special Weather Statement	DLH	Cass	25 min
Jun 28, 9:16 AM CDT	Special Weather Statement	DLH	Cass	29 min
Jun 28, 9:45 AM CDT	Special Weather Statement	DLH	Itasca	15 min
Jun 28, 9:58 AM CDT	Special Weather Statement	DLH	Itasca	32 min
Jun 28, 10:27 AM CDT	Special Weather Statement	DLH	Itasca	33 min
Jun 28, 10:45 AM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Cass, Itasca	30 min
Jun 28, 11:16 AM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Itasca	29 min
Jun 28, 11:45 AM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Itasca, Saint Louis	31 min
Jun 28, 12:13 PM CDT	Special Weather Statement	DLH	Cass	32 min
Jun 28, 12:34 PM CDT	Special Weather Statement	DLH	Carlton	11 min
Jun 28, 12:45 PM CDT	Special Weather Statement	DLH	Cass	30 min
Jun 28, 12:46 PM CDT	Special Weather Statement	DLH	Carlton	29 min
Jun 28, 12:53 PM CDT	Special Weather Statement	DLH	Aitkin	37 min
Jun 28, 1:03 PM CDT	Severe Thunderstorm Warning	DLH	Cass, Itasca	29 min
Jun 28, 1:14 PM CDT	Special Weather Statement	DLH	Carlton	31 min
Jun 28, 1:25 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Cass, Itasca	50 min
Jun 28, 1:41 PM CDT	Special Weather Statement	DLH	Carlton	34 min
Jun 28, 1:51 PM CDT	Special Marine Warning	DLH		54 min
Jun 28, 2:02 PM CDT	Special Weather Statement	DLH	Carlton	13 min
Jun 28, 2:24 PM CDT	Special Weather Statement	DLH	Aitkin	21 min
Jun 28, 2:30 PM CDT	Severe Thunderstorm Warning	DLH	Cass, Itasca	45 min
Jun 28, 2:44 PM CDT	Special Weather Statement	DLH	Aitkin	31 min
Jun 28, 2:52 PM CDT	Severe Thunderstorm Warning	DLH	Cass, Itasca	38 min
Jun 28, 3:00 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton, Saint Louis	30 min
Jun 28, 3:20 PM CDT	Special Weather Statement	DLH	Aitkin	25 min
Jun 28, 3:25 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Cass, Itasca	35 min
Jun 28, 3:30 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton, Saint Louis	30 min
Jun 28, 3:43 PM CDT	Special Weather Statement	DLH	Cass	32 min
Jun 28, 3:49 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Saint Louis	41 min
Jun 28, 4:26 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Pine	49 min
Jun 28, 4:35 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton, Saint Louis	40 min
Jun 28, 5:12 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Pine	48 min
Jun 28, 5:15 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton, Pine	30 min
Jun 28, 5:34 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton, Pine	26 min
Jun 28, 5:46 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Pine	29 min
Jun 28, 5:59 PM CDT	Special Weather Statement	DLH	Pine	16 min
Jun 28, 6:10 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Pine	50 min
Jun 28, 4:31 PM CDT	Special Weather Statement	DLH	Ashland	14 min
Jun 28, 6:02 PM CDT	Special Weather Statement	DLH	Washburn	28 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2018 Every severe thunderstorm warning in 2018

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.