Alert archive / Wisconsin / Frost Advisories in 2026

Frost Advisory 8, NWS Green Bay, WI

May 20, 202610 counties in Wisconsin

NWS Green Bay, WI issued this frost advisory at May 20, 2026, 1:17 PM CDT for 10 counties in Wisconsin. It took effect at May 21, 2026, 12:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
May 20, 2026, 1:17 PM CDT (18:17 UTC)
In effect from
May 21, 2026, 12:00 AM CDT
Expired
May 21, 2026, 8:00 AM CDT
In force
8 hr
Issued by
NWS Green Bay, WI

Counties Door County, WI, Florence County, WI, Forest County, WI, Langlade County, WI, Lincoln County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Vilas County, WI

The radar

The Green Bay radar (KGRB), 112 km from the middle of the area, began a volume at 18:18 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.

What forecasters said that day

The local office's own words before this frost advisory 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 frost advisory went out at May 20, 1:16 PM CDT, 1 minute earlier.

Area forecast discussion, May 20, 1:16 PM CDT, 1 minute before
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Hazardous weather outlook, May 20, 2:32 AM CDT, 10 hours 45 minutes before
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  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <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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Nearby

Frost Advisories in Wisconsin, 2026Every frost advisory in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.