Alert archive / Wisconsin / Winter Weather Advisories in 2021

Winter Weather Advisory 12, NWS La Crosse, WI

December 5, 20219 counties in Wisconsin; Allamakee County, Iowa; Houston County, Minnesota

NWS La Crosse, WI issued this winter weather advisory at Dec 5, 2021, 12:25 PM CST for 9 counties in Wisconsin; Allamakee County, Iowa; Houston County, Minnesota. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Dec 5, 2021, 12:25 PM CST (18:25 UTC)
Expired: Dec 5, 2021, 9:00 PM CST
In force: 9 hr
Issued by: NWS La Crosse, WI

Counties Allamakee County, IA, Houston County, MN, Adams County, WI, Clark County, WI, Crawford County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Richland County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 36 km from the middle of the area, began a volume at 18:28 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, 6.4 hours before the alert went out and 223 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: 534 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 558 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 La Crosse, WI wrote its last area forecast discussion before this winter weather advisory went out at Dec 5, 11:54 AM CST, 31 minutes earlier.

Area forecast discussion, Dec 5, 11:54 AM CST, 31 minutes before

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Hazardous weather outlook, Dec 5, 3:40 AM CST, 8 hours 45 minutes before

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In the hours before

Local storm report, Dec 5, 7:54 AM CST, 4 hours 31 minutes before

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Special weather statement, Dec 5, 9:03 AM CST, 3 hours 22 minutes before

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Local storm report, Dec 5, 10:03 AM CST, 2 hours 22 minutes before

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Local storm report, Dec 5, 10:18 AM CST, 2 hours 7 minutes before

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Local storm report, Dec 5, 10:52 AM CST, 1 hour 33 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Dec 5, 12:21 PM CST, 4 minutes before

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  <main class="wrap">
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      <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 5, 3:03 AM CST	Wind Advisory	ARX	Adams, Buffalo, Clark, Crawford, Grant, Jackson and 7 more	30 hr
Dec 5, 12:07 PM CST	Winter Storm Warning	ARX	Taylor	14 hr

Nearby

Winter Weather Advisories in Wisconsin, 2021 Winter Weather Advisories in Iowa, 2021 Winter Weather Advisories in Minnesota, 2021 Every 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.