Alert archive / Illinois / River Flood Advisories in 2021

River Flood Advisory 29, NWS Chicago, IL

June 30, 2021Cook County, Illinois; Lake County, Indiana

NWS Chicago, IL issued this river flood advisory at Jun 30, 2021, 4:48 PM CDT for Cook County, Illinois; Lake County, Indiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jun 30, 2021, 4:48 PM CDT (21:48 UTC)
Expired: Jun 30, 2021, 7:38 PM CDT
In force: 3 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon

Counties Cook County, IL, Lake County, IN

The radar

The Chicago radar (KLOT), 48 km from the middle of the area, began a volume at 21:48 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 Little Calumet River at Munster (LCMI3). The gauge peaked at 11.10 ft at Jun 29, 2021, 5:00 PM CDT.

Action stage: 11.5 ft
Minor stage: 12 ft
Moderate stage: 14 ft
Major stage: 17 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05536195, 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 advisory 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 advisory went out at Jun 30, 3:36 PM CDT, 1 hour 12 minutes earlier.

Area forecast discussion, Jun 30, 3:36 PM CDT, 1 hour 12 minutes before

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Hazardous weather outlook, Jun 30, 4:20 PM CDT, 28 minutes before

<!doctype html>
<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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 7:24 PM CDT	River Flood Warning	LOT	Grundy, LaSalle	25 hr
Jun 29, 8:05 PM CDT	Special Weather Statement	LOT	Cook	40 min
Jun 29, 9:05 PM CDT	Special Marine Warning	LOT		37 min
Jun 30, 4:01 AM CDT	Beach Hazards Statement	LOT	Cook, Lake	59 hr
Jun 30, 4:09 AM CDT	Small Craft Advisory	LOT		59 hr
Jun 30, 10:40 AM CDT	Areal Flood Advisory	LOT	Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston and 1 more	4 hr
Jun 30, 12:31 PM CDT	Areal Flood Advisory	LOT	Ford, Iroquois, Kankakee, Livingston	119 min
Jun 30, 3:54 PM CDT	Areal Flood Advisory	LOT	Cook, Grundy, Kendall, Will	3 hr
Jun 30, 5:32 AM CDT	River Flood Warning	LOT	Newton	5 days
Jun 30, 11:02 AM CDT	River Flood Warning	LOT	Jasper	53 hr

Nearby

River Flood Advisories in Illinois, 2021 River Flood Advisories in Indiana, 2021 Every river flood 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.