Alert archive / Wisconsin / Winter Weather Advisories in 2021
Winter Weather Advisory 6, NWS Milwaukee, WI
NWS Milwaukee, WI issued this winter weather advisory at Jan 29, 2021, 2:28 PM CST for 10 counties in Wisconsin. It took effect at Jan 30, 2021, 3:00 PM CST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Jan 29, 2021, 2:28 PM CST (20:28 UTC)
- In effect from
- Jan 30, 2021, 3:00 PM CST
- Expired
- Jan 31, 2021, 12:14 PM CST
- In force
- 21 hr
- Issued by
- NWS Milwaukee, WI
Counties Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Marquette County, WI, Sauk County, WI, Sheboygan County, WI
The radar
The Milwaukee radar (KMKX), 70 km from the middle of the area, began a volume at 20:32 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, 8.5 hours before the alert went out and 140 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1224 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jan 29, 9:55 AM CST, 4 hours 33 minutes earlier.
Area forecast discussion, Jan 29, 9:55 AM CST, 4 hours 33 minutes before
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</html>Hazardous weather outlook, Jan 29, 4:07 AM CST, 10 hours 21 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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</html>The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 29, 2:28 AM CST | Small Craft Advisory | MKX | 40 hr | |
| Jan 29, 3:02 AM CST | Winter Storm Watch | MKX | Green, Kenosha, Lafayette, Milwaukee, Ozaukee, Racine and 4 more | 11 hr |
| Jan 29, 2:28 PM CST | Winter Storm Warning | MKX | Green, Kenosha, Lafayette, Milwaukee, Ozaukee, Racine and 5 more | 52 hr |
| Jan 29, 2:42 PM CST | Gale Warning | MKX | 42 hr |
Nearby
Winter Weather Advisories in Wisconsin, 2021Every winter weather advisory in 2021
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.