Alert archive / Illinois / River Flood Warnings in 2019

River Flood Warning 101, NWS Chicago, IL

May 24, 2019Winnebago County, Illinois

NWS Chicago, IL issued this river flood warning at May 24, 2019, 11:16 AM CDT for Winnebago County, Illinois. It took effect at May 26, 2019, 5:00 AM CDT. It was in force for 19 days.

The area

The counties it named.

The facts

Issued: May 24, 2019, 11:16 AM CDT (16:16 UTC)
In effect from: May 26, 2019, 5:00 AM CDT
Expired: Jun 14, 2019, 11:16 AM CDT
In force: 19 days
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Winnebago County, IL

The radar

The Milwaukee radar (KMKX), 86 km from the middle of the area, began a volume at 16:15 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 Rock River at Rockton (ROKI2). The gauge peaked at 9.71 ft at May 31, 2019, 4:00 AM CDT.

Action stage: 8.5 ft
Minor stage: 10 ft
Moderate stage: 11 ft
Major stage: 14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05437500, 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 May 23, 6:56 PM CDT, 16 hours 20 minutes earlier.

Area forecast discussion, May 23, 6:56 PM CDT, 16 hours 20 minutes before

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Hazardous weather outlook, May 23, 4:20 PM CDT, 18 hours 56 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
May 23, 9:05 PM CDT	River Flood Advisory	LOT	Kankakee	36 hr
May 24, 3:33 AM CDT	Flash Flood Watch	LOT	Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more	22 hr
May 24, 5:22 AM CDT	Special Weather Statement	LOT	Iroquois	23 min
May 24, 10:20 AM CDT	Special Weather Statement	LOT	Lee, Ogle, Winnebago	55 min
May 24, 11:08 AM CDT	River Flood Warning	LOT	Lake	6 days
May 24, 11:08 AM CDT	River Flood Warning	LOT	Lake	4 days
May 24, 11:08 AM CDT	River Flood Warning	LOT	Lake	6 days
May 24, 11:16 AM CDT	River Flood Warning	LOT	Winnebago	21 days
May 24, 11:16 AM CDT	River Flood Warning	LOT	Ogle	7 days
May 24, 11:16 AM CDT	River Flood Warning	LOT	Lee	4 days
May 24, 11:16 AM CDT	River Flood Warning	LOT	Boone	65 hr
May 24, 11:16 AM CDT	River Flood Warning	LOT	Winnebago	4 days
May 24, 11:16 AM CDT	River Flood Warning	LOT	Winnebago	21 days
May 24, 11:18 AM CDT	River Flood Warning	LOT	Kane, McHenry	16 days
May 24, 11:18 AM CDT	River Flood Warning	LOT	Kane, Kendall	21 hr
May 24, 11:18 AM CDT	River Flood Warning	LOT	LaSalle	5 days
May 24, 11:18 AM CDT	River Flood Warning	LOT	Will	46 hr
May 24, 11:31 AM CDT	River Flood Warning	LOT	Grundy	67 hr
May 24, 11:31 AM CDT	River Flood Warning	LOT	LaSalle	24 hr
May 24, 11:40 AM CDT	River Flood Advisory	LOT	Cook	7 days
May 24, 11:40 AM CDT	River Flood Advisory	LOT	Cook	67 hr
May 24, 11:40 AM CDT	River Flood Advisory	LOT	Cook	61 hr
May 24, 11:40 AM CDT	River Flood Advisory	LOT	Will	58 hr
May 24, 11:40 AM CDT	River Flood Advisory	LOT	Will	49 hr
May 24, 11:40 AM CDT	River Flood Advisory	LOT	Porter	5 days
May 24, 11:40 AM CDT	River Flood Advisory	LOT	Jasper, Porter	5 days

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.