Alert archive / Illinois / River Flood Warnings in 2020

River Flood Warning 13, NWS Chicago, IL

January 10, 2020Grundy County, Illinois

NWS Chicago, IL issued this river flood warning at Jan 10, 2020, 10:54 AM CST for Grundy County, Illinois. It took effect at Jan 11, 2020, 7:36 PM CST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Jan 10, 2020, 10:54 AM CST (16:54 UTC)
In effect from: Jan 11, 2020, 7:36 PM CST
Expired: Jan 12, 2020, 7:45 PM CST
In force: 24 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Moderate

County Grundy County, IL

The radar

The Chicago radar (KLOT), 45 km from the middle of the area, began a volume at 16:58 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 river

Written for the forecast point Illinois River at Morris (MORI2). The gauge peaked at 15.71 ft at Jan 12, 2020, 2:00 PM CST.

Action stage: 13 ft
Minor stage: 16 ft
Moderate stage: 18 ft
Major stage: 22 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05542500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Jan 10, 5:57 AM CST, 4 hours 57 minutes earlier.

Area forecast discussion, Jan 10, 5:57 AM CST, 4 hours 57 minutes before

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Hazardous weather outlook, Jan 10, 5:00 AM CST, 5 hours 54 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <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.
      </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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    </section>
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</body>
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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, 4:03 AM CST	Winter Storm Warning	LOT	Boone, DeKalb, Lee, McHenry, Ogle, Winnebago	44 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	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

River Flood Warnings in Illinois, 2020 Every river flood 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; the gauge from the NWS water service and the USGS.