Alert archive / Illinois / Winter Storm Warnings in 2020

Winter Storm Warning 1, NWS Chicago, IL

January 10, 20206 counties in Illinois

NWS Chicago, IL issued this winter storm warning at Jan 10, 2020, 4:03 AM CST for 6 counties in Illinois. It took effect at Jan 10, 2020, 9:00 PM CST. It was in force for 27 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 10, 2020, 4:03 AM CST (10:03 UTC)
In effect from: Jan 10, 2020, 9:00 PM CST
Expired: Jan 12, 2020, 12:25 AM CST
In force: 27 hr
Issued by: NWS Chicago, IL

Counties Boone County, IL, DeKalb County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Winnebago County, IL

The radar

The Chicago radar (KLOT), 93 km from the middle of the area, began a volume at 10:03 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 winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this winter storm warning went out at Jan 9, 10:57 PM CST, 5 hours 6 minutes earlier.

Area forecast discussion, Jan 9, 10:57 PM CST, 5 hours 6 minutes before

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Hazardous weather outlook, Jan 9, 4:07 PM CST, 11 hours 56 minutes before

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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <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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        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 Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 9, 8:50 PM CST	Lakeshore Flood Warning	LOT	Lake	57 hr
Jan 10, 3:11 AM CST	Gale Warning	LOT		48 hr
Jan 10, 10:14 AM CST	River Flood Warning	LOT	Livingston	57 hr
Jan 10, 10:14 AM CST	River Flood Warning	LOT	LaSalle	3 days
Jan 10, 10:32 AM CST	River Flood Advisory	LOT	Kane, Kendall	9 hr
Jan 10, 10:54 AM CST	River Flood Warning	LOT	Grundy	57 hr
Jan 10, 10:54 AM CST	River Flood Warning	LOT	LaSalle	6 days
Jan 10, 10:54 AM CST	River Flood Warning	LOT	Bureau, LaSalle, Putnam	12 days
Jan 10, 11:44 AM CST	Winter Weather Advisory	LOT	DuPage, Grundy, Kane, Kankakee, Kendall, Lake and 2 more	38 hr

Nearby

Winter Storm Warnings in Illinois, 2020 Every winter storm warning in 2020

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.