Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 124, NWS Duluth, MN

September 19, 2013Lake County, Saint Louis County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Sep 19, 2013, 9:16 AM CDT for Lake County, Saint Louis County, Minnesota. It was in force for 29 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: Sep 19, 2013, 9:16 AM CDT (14:16 UTC)
Expired: Sep 19, 2013, 9:45 AM CDT
In force: 29 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Lake County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 83 km from the middle of the area, began a volume at 14:17 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

Minneapolis, MN (KMPX), launched 12:00Z, 2.3 hours before the alert went out and 327 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: 1434 J/kg
Mixed-layer CIN: -202 J/kg
Mixed-layer LCL: 928 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 200 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 Sep 19, 7:29 AM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Sep 19, 7:29 AM CDT, 1 hour 47 minutes before

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Hazardous weather outlook, Sep 19, 4:09 AM CDT, 5 hours 7 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
Sep 19, 1:20 AM CDT	Severe Thunderstorm Warning	DLH	Koochiching	40 min
Sep 19, 1:56 AM CDT	Severe Thunderstorm Warning	DLH	Koochiching	49 min
Sep 19, 2:05 AM CDT	Special Weather Statement	DLH	Itasca	25 min
Sep 19, 2:23 AM CDT	Special Weather Statement	DLH	Cass	37 min
Sep 19, 2:36 AM CDT	Severe Thunderstorm Warning	DLH	Koochiching, Saint Louis	24 min
Sep 19, 2:54 AM CDT	Special Weather Statement	DLH	Koochiching	36 min
Sep 19, 9:16 AM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	44 min
Sep 19, 9:35 AM CDT	Special Weather Statement	DLH	Lake	25 min
Sep 19, 10:05 AM CDT	Special Weather Statement	DLH	Lake	40 min
Sep 19, 10:46 AM CDT	Severe Thunderstorm Warning	DLH	Pine	44 min
Sep 19, 11:09 AM CDT	Special Weather Statement	DLH	Lake	36 min
Sep 19, 11:30 AM CDT	Severe Thunderstorm Warning	DLH	Pine	45 min
Sep 19, 12:07 PM CDT	Special Weather Statement	DLH	Pine	23 min
Sep 19, 12:29 PM CDT	Special Weather Statement	DLH	Carlton	31 min
Sep 19, 3:31 PM CDT	Small Craft Advisory	DLH		36 hr
Sep 19, 12:05 PM CDT	Severe Thunderstorm Warning	DLH	Burnett, Washburn	40 min
Sep 19, 12:39 PM CDT	Special Weather Statement	DLH	Sawyer	36 min
Sep 19, 1:33 PM CDT	Special Weather Statement	DLH	Price, Sawyer	27 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013 Every severe thunderstorm warning in 2013

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.