Alert archive / Wisconsin / Special Weather Statements in 2014

Special Weather Statement, NWS Twin Cities, MN

August 29, 2014Dunn County, Pierce County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at Aug 29, 2014, 10:09 PM CDT for Dunn County, Pierce County, Wisconsin. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 29, 2014, 10:09 PM CDT (03:09 UTC)
Expired: Aug 30, 2014, 12:15 AM CDT
In force: 2 hr
Issued by: NWS Twin Cities, MN

Counties Dunn County, WI, Pierce County, WI

The radar

The Minneapolis radar (KMPX), 104 km from the middle of the area, began a volume at 03:12 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.2 hours before the alert went out and 330 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: 1982 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 850 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 6.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Twin Cities, MN wrote its last area forecast discussion before this special weather statement went out at Aug 29, 7:06 PM CDT, 3 hours 3 minutes earlier.

Area forecast discussion, Aug 29, 7:06 PM CDT, 3 hours 3 minutes before

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Hazardous weather outlook, Aug 29, 8:22 PM CDT, 1 hour 47 minutes before

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In the hours before

Special weather statement, Aug 29, 5:47 PM CDT, 4 hours 22 minutes before

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Local storm report, Aug 29, 6:01 PM CDT, 4 hours 8 minutes before

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Local storm report, Aug 29, 6:02 PM CDT, 4 hours 7 minutes before

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Special weather statement, Aug 29, 9:35 PM CDT, 34 minutes before

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Special weather statement, Aug 29, 9:38 PM CDT, 31 minutes before

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Special weather statement, Aug 29, 10:09 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 9:35 PM CDT	Special Weather Statement	MPX	Freeborn	115 min
Aug 29, 9:38 PM CDT	Special Weather Statement	MPX	Freeborn	112 min
Aug 29, 10:49 PM CDT	Special Weather Statement	MPX	Steele	116 min

Nearby

Special Weather Statements in Wisconsin, 2014 Every special weather statement in 2014

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.