Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 38, NWS Duluth, MN

May 11, 2011Price County, Sawyer County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at May 11, 2011, 12:57 PM CDT for Price County, Sawyer County, Wisconsin. 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 counties it named.

The facts

Issued: May 11, 2011, 12:57 PM CDT (17:57 UTC)
Expired: May 11, 2011, 1:30 PM CDT
In force: 33 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Price County, WI, Sawyer County, WI

The radar

The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 18:00 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, 6.0 hours before the alert went out and 245 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: 20 J/kg
Mixed-layer CIN: -538 J/kg
Mixed-layer LCL: 1725 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -98 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

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 May 11, 9:50 AM CDT, 3 hours 7 minutes earlier.

Area forecast discussion, May 11, 9:50 AM CDT, 3 hours 7 minutes before

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Hazardous weather outlook, May 11, 4:09 AM CDT, 8 hours 48 minutes before

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In the hours before

Special weather statement, May 11, 11:35 AM CDT, 1 hour 22 minutes before

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Special weather statement, May 11, 12:11 PM CDT, 46 minutes before

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Special weather statement, May 11, 12:34 PM CDT, 23 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
May 10, 7:14 PM CDT	Severe Thunderstorm Warning	DLH	Cass, Crow Wing	25 min
May 10, 7:41 PM CDT	Special Weather Statement	DLH	Aitkin	49 min
May 10, 8:54 PM CDT	Special Weather Statement	DLH	Pine	51 min
May 10, 9:51 PM CDT	Special Weather Statement	DLH	Lake, Saint Louis	39 min
May 10, 10:01 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	44 min
May 10, 10:10 PM CDT	Special Weather Statement	DLH	Pine	35 min
May 10, 10:17 PM CDT	Severe Thunderstorm Warning	DLH	Pine	43 min
May 10, 10:31 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	29 min
May 10, 10:40 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	50 min
May 10, 10:57 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	48 min
May 10, 11:00 PM CDT	Severe Thunderstorm Warning	DLH	Pine	60 min
May 10, 11:09 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	32 min
May 10, 11:20 PM CDT	Severe Thunderstorm Warning	DLH	Cook, Lake	55 min
May 10, 11:24 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	51 min
May 11, 12:25 AM CDT	Special Weather Statement	DLH	Lake	35 min
May 11, 12:57 AM CDT	Special Weather Statement	DLH	Lake	33 min
May 10, 9:32 PM CDT	Severe Thunderstorm Warning	DLH	Burnett, Douglas, Washburn	21 min
May 10, 10:08 PM CDT	Special Weather Statement	DLH	Sawyer, Washburn	37 min
May 10, 10:41 PM CDT	Severe Thunderstorm Warning	DLH	Burnett	34 min
May 10, 11:47 PM CDT	Severe Thunderstorm Warning	DLH	Burnett, Sawyer, Washburn	58 min
May 11, 12:30 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Price, Sawyer	45 min
May 11, 1:11 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Iron, Price, Sawyer	49 min
May 11, 11:35 AM CDT	Special Weather Statement	DLH	Price	40 min
May 11, 12:11 PM CDT	Special Weather Statement	DLH	Price, Sawyer	19 min
May 11, 12:34 PM CDT	Special Weather Statement	DLH	Ashland, Iron, Price, Sawyer	16 min
May 11, 1:07 PM CDT	Special Weather Statement	DLH	Ashland, Bayfield, Iron	18 min
May 11, 1:42 PM CDT	Special Weather Statement	DLH	Ashland, Bayfield, Iron, Price, Sawyer	23 min
May 11, 3:27 PM CDT	Special Weather Statement	DLH	Price	33 min
May 11, 3:53 PM CDT	Special Weather Statement	DLH	Iron	22 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

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.