Alert archive / Wisconsin / Winter Weather Advisories in 2019

Winter Weather Advisory 21, NWS Milwaukee, WI

November 30, 201910 counties in Wisconsin

NWS Milwaukee, WI issued this winter weather advisory at Nov 30, 2019, 2:18 PM CST for 10 counties in Wisconsin. It took effect at Dec 1, 2019, 12:00 AM CST. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued
Nov 30, 2019, 2:18 PM CST (20:18 UTC)
In effect from
Dec 1, 2019, 12:00 AM CST
Expired
Dec 1, 2019, 10:31 PM CST
In force
23 hr
Issued by
NWS Milwaukee, WI

Counties Fond du Lac County, WI, Green Lake County, WI, Kenosha County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Sheboygan County, WI, Washington County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 46 km from the middle of the area, began a volume at 20:20 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 12:00Z, 8.3 hours before the alert went out and 354 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2019-11-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2019-11-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 190 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
552 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
182 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 weather advisory 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 weather advisory went out at Nov 30, 12:04 PM CST, 2 hours 14 minutes earlier.

Area forecast discussion, Nov 30, 12:04 PM CST, 2 hours 14 minutes before
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Hazardous weather outlook, Nov 30, 9:43 AM CST, 4 hours 35 minutes before
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Nearby

Winter Weather Advisories in Wisconsin, 2019Every winter weather advisory in 2019

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.