Alert archive / Illinois / River Flood Warnings in 2019

River Flood Warning 151, NWS Chicago, IL

September 21, 2019Cook County, Illinois

NWS Chicago, IL issued this river flood warning at Sep 21, 2019, 8:43 PM CDT for Cook County, Illinois. It took effect at Sep 23, 2019, 1:00 AM CDT. It was in force for 4 days.

The area

The counties it named.

The facts

Issued: Sep 21, 2019, 8:43 PM CDT (01:43 UTC)
In effect from: Sep 23, 2019, 1:00 AM CDT
Expired: Sep 26, 2019, 4:00 PM CDT
In force: 4 days
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Cook County, IL

The radar

The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 01:44 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 Des Plaines River near Des Plaines (DSPI2). The gauge peaked at 15.39 ft at Sep 20, 2019, 8:00 PM CDT.

Action stage: 13.5 ft
Minor stage: 15 ft
Moderate stage: 18 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05529000, 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 Sep 21, 6:25 PM CDT, 2 hours 18 minutes earlier.

Area forecast discussion, Sep 21, 6:25 PM CDT, 2 hours 18 minutes before

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Hazardous weather outlook, Sep 21, 3:30 PM CDT, 5 hours 13 minutes before

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<html lang="en">
<head>
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</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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In the hours before

Local storm report, Sep 21, 4:14 PM CDT, 4 hours 29 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.
      </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
Sep 21, 8:43 PM CDT	River Flood Warning	LOT	LaSalle	3 days
Sep 21, 8:48 PM CDT	River Flood Advisory	LOT	Cook	4 days
Sep 21, 8:48 PM CDT	River Flood Advisory	LOT	Cook	52 hr
Sep 21, 8:48 PM CDT	River Flood Advisory	LOT	Will	70 hr
Sep 21, 9:22 PM CDT	River Flood Advisory	LOT	Boone	37 hr
Sep 21, 9:22 PM CDT	River Flood Advisory	LOT	Winnebago	24 hr
Sep 21, 9:22 PM CDT	River Flood Advisory	LOT	Ogle	4 days
Sep 21, 9:22 PM CDT	River Flood Advisory	LOT	Lee	3 days
Sep 21, 9:38 PM CDT	River Flood Watch	LOT	Winnebago	23 hr
Sep 22, 11:00 AM CDT	River Flood Advisory	LOT	LaSalle	56 hr
Sep 22, 11:00 AM CDT	River Flood Advisory	LOT	Bureau, LaSalle, Putnam	68 hr
Sep 22, 6:16 PM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Kane, Lake	3 hr
Sep 22, 2:41 PM CDT	Beach Hazards Statement	LOT	Porter	25 hr

Nearby

River Flood Warnings in Illinois, 2019 Every river flood warning in 2019

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.