Alert archive / Wisconsin / Special Weather Statements in 2015

Special Weather Statement, NWS Milwaukee, WI

April 7, 2015Ozaukee County, Washington County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Apr 7, 2015, 9:31 PM CDT for Ozaukee County, Washington County, Wisconsin. It was in force for 44 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: Apr 7, 2015, 9:31 PM CDT (02:31 UTC)
Expired: Apr 7, 2015, 10:15 PM CDT
In force: 44 min
Issued by: NWS Milwaukee, WI

Counties Ozaukee County, WI, Washington County, WI

The radar

The Milwaukee radar (KMKX), 59 km from the middle of the area, began a volume at 02:33 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

Davenport, (KDVN), launched 00:00Z, 2.5 hours before the alert went out and 278 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: 629 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 363 m²/s²
0-3 km storm-relative helicity: 399 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Milwaukee, WI wrote its last area forecast discussion before this special weather statement went out at Apr 7, 9:18 PM CDT, 13 minutes earlier.

Area forecast discussion, Apr 7, 9:18 PM CDT, 13 minutes before

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In the hours before

Local storm report, Apr 7, 8:12 PM CDT, 1 hour 19 minutes before

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Special weather statement, Apr 7, 8:24 PM CDT, 1 hour 7 minutes before

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Local storm report, Apr 7, 8:54 PM CDT, 37 minutes before

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Local storm report, Apr 7, 9:11 PM CDT, 20 minutes before

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Local storm report, Apr 7, 9:18 PM CDT, 13 minutes before

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Special weather statement, Apr 7, 9:31 PM 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
Apr 7, 7:19 PM CDT	Special Weather Statement	MKX	Columbia	26 min
Apr 7, 8:24 PM CDT	Special Weather Statement	MKX	Dodge	36 min

Nearby

Special Weather Statements in Wisconsin, 2015 Every special weather statement in 2015

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.