Alert archive / Wisconsin / Winter Storm Watches in 2011

Winter Storm Watch 1, NWS Milwaukee, WI

January 30, 201120 counties in Wisconsin

NWS Milwaukee, WI issued this winter storm watch at Jan 30, 2011, 4:01 AM CST for 20 counties in Wisconsin. It took effect at Jan 31, 2011, 4:00 AM CST. It was in force for 25 hr.

The area

The counties it named.

The facts

Issued: Jan 30, 2011, 4:01 AM CST (10:01 UTC)
In effect from: Jan 31, 2011, 4:00 AM CST
Expired: Feb 1, 2011, 5:09 AM CST
In force: 25 hr
Issued by: NWS Milwaukee, WI

Counties Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 31 km from the middle of the area, began a volume at 10:06 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

Lincoln, IL (KILX), launched 00:00Z, 10.0 hours before the alert went out and 336 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: 767 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: -72 m²/s²
0-3 km storm-relative helicity: 242 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 winter storm watch 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 winter storm watch went out at Jan 30, 3:30 AM CST, 31 minutes earlier.

Area forecast discussion, Jan 30, 3:30 AM CST, 31 minutes before

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Hazardous weather outlook, Jan 29, 6:23 PM CST, 9 hours 38 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
Jan 30, 12:25 PM CST	Blizzard Watch	MKX	Jefferson, Kenosha, Milwaukee, Ozaukee, Racine, Rock and 4 more	27 hr
Jan 30, 12:25 PM CST	Winter Weather Advisory	MKX	Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more	51 hr
Jan 30, 3:54 PM CST	Gale Watch	MKX		24 hr
Jan 30, 3:54 PM CST	Small Craft Advisory	MKX		47 hr

Nearby

Winter Storm Watches in Wisconsin, 2011 Every winter storm watch 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.