Alert archive / Illinois / River Flood Advisories in 2022

River Flood Advisory 21, NWS Chicago, IL

December 25, 2022Winnebago County, Illinois

NWS Chicago, IL issued this river flood advisory at Dec 25, 2022, 11:44 AM CST for Winnebago County, Illinois. It was in force for 4 days.

The area

The counties it named.

The facts

Issued: Dec 25, 2022, 11:44 AM CST (17:44 UTC)
Expired: Dec 29, 2022, 10:24 AM CST
In force: 4 days
Issued by: NWS Chicago, IL
Area: Storm-based polygon

County Winnebago County, IL

The radar

The Milwaukee radar (KMKX), 86 km from the middle of the area, began a volume at 17:43 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 8.90 ft at Dec 26, 2022, 3:00 AM CST.

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 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 Dec 25, 11:24 AM CST, 20 minutes earlier.

Area forecast discussion, Dec 25, 11:24 AM CST, 20 minutes before

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Hazardous weather outlook, Dec 25, 9:22 AM CST, 2 hours 22 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>
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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
Dec 24, 9:57 PM CST	Small Craft Advisory	LOT		14 hr

Nearby

River Flood Advisories in Illinois, 2022 Every river flood advisory in 2022

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.