Alert archive / Wisconsin / Special Weather Statements in 2016

Special Weather Statement, NWS Milwaukee, WI

August 20, 20164 counties in Wisconsin

NWS Milwaukee, WI issued this special weather statement at Aug 20, 2016, 7:02 AM CDT for 4 counties in Wisconsin. It was in force for 58 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: Aug 20, 2016, 7:02 AM CDT (12:02 UTC)
Expired: Aug 20, 2016, 8:00 AM CDT
In force: 58 min
Issued by: NWS Milwaukee, WI

Counties Dodge County, WI, Jefferson County, WI, Walworth County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 4 km from the middle of the area, began a volume at 12:02 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 12:00Z, 0.0 hours before the alert went out and 173 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: 162 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 888 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 249 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Milwaukee, WI wrote its last area forecast discussion before this special weather statement went out at Aug 20, 3:37 AM CDT, 3 hours 25 minutes earlier.

Area forecast discussion, Aug 20, 3:37 AM CDT, 3 hours 25 minutes before

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Hazardous weather outlook, Aug 20, 4:18 AM CDT, 2 hours 44 minutes before

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In the hours before

Special weather statement, Aug 20, 6:28 AM CDT, 34 minutes before

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Special weather statement, Aug 20, 7:02 AM CDT, 0 minutes before

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The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 19, 8:12 PM CDT	Special Weather Statement	MKX	Waukesha	33 min
Aug 19, 9:11 PM CDT	Special Weather Statement	MKX	Jefferson	49 min
Aug 19, 9:33 PM CDT	Special Weather Statement	MKX	Dane	27 min
Aug 19, 9:59 PM CDT	Special Weather Statement	MKX	Dane, Jefferson	46 min
Aug 19, 10:33 PM CDT	Special Weather Statement	MKX	Dodge	42 min
Aug 19, 10:45 PM CDT	Special Weather Statement	MKX	Washington	30 min
Aug 19, 10:56 PM CDT	Special Weather Statement	MKX	Fond du Lac	34 min
Aug 19, 11:25 PM CDT	Special Weather Statement	MKX	Fond du Lac	35 min
Aug 20, 12:43 AM CDT	Special Weather Statement	MKX	Sauk	32 min
Aug 20, 1:29 AM CDT	Areal Flood Advisory	MKX	Columbia, Sauk	3 hr
Aug 20, 6:28 AM CDT	Special Weather Statement	MKX	Walworth	32 min
Aug 20, 7:58 AM CDT	Special Marine Warning	MKX		62 min
Aug 20, 8:00 AM CDT	Special Weather Statement	MKX	Kenosha, Milwaukee, Racine	30 min
Aug 20, 8:39 AM CDT	Special Marine Warning	MKX		51 min

Nearby

Special Weather Statements in Wisconsin, 2016 Every special weather statement in 2016

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.