Alert archive / Wisconsin / Ice Storm Warnings in 2013

Ice Storm Warning 1, NWS Green Bay, WI

April 10, 2013Calumet County, Waushara County, Winnebago County, Wisconsin

NWS Green Bay, WI issued this ice storm warning at Apr 10, 2013, 9:55 PM CDT for Calumet County, Waushara County, Winnebago County, Wisconsin. It took effect at Apr 11, 2013, 12:00 AM CDT. 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 counties it named.

The facts

Issued: Apr 10, 2013, 9:55 PM CDT (02:55 UTC)
In effect from: Apr 11, 2013, 12:00 AM CDT
Expired: Apr 11, 2013, 2:11 AM CDT
In force: 2 hr
Issued by: NWS Green Bay, WI

Counties Calumet County, WI, Waushara County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 66 km from the middle of the area, began a volume at 02:54 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, 2.9 hours before the alert went out and 65 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: 1096 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 283 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 ice storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Green Bay, WI wrote its last area forecast discussion before this ice storm warning went out at Apr 10, 7:29 PM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Apr 10, 7:29 PM CDT, 2 hours 26 minutes before

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Hazardous weather outlook, Apr 10, 3:44 PM CDT, 6 hours 11 minutes before

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In the hours before

Special weather statement, Apr 10, 3:55 PM CDT, 6 hours before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 9:55 PM CDT	Winter Weather Advisory	GRB	Brown, Kewaunee, Manitowoc, Marathon, Outagamie, Portage and 3 more	36 hr

Nearby

Ice Storm Warnings in Wisconsin, 2013 Every ice storm 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.