Alert archive / Illinois / River Flood Warnings in 2011

River Flood Warning 32, NWS Chicago, IL

April 25, 2011LaSalle County, Illinois

NWS Chicago, IL issued this river flood warning at Apr 25, 2011, 10:52 AM CDT for LaSalle County, Illinois. It took effect at Apr 26, 2011, 1:00 PM CDT. It was in force for 4 days.

The area

The counties it named.

The facts

Issued: Apr 25, 2011, 10:52 AM CDT (15:52 UTC)
In effect from: Apr 26, 2011, 1:00 PM CDT
Expired: Apr 30, 2011, 4:26 AM CDT
In force: 4 days
Issued by: NWS Chicago, IL
Flood severity: Minor

County LaSalle County, IL

The radar

The Chicago radar (KLOT), 73 km from the middle of the area, began a volume at 15:55 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 Ottawa (OTWI2).

Action stage: 461 ft
Minor stage: 463 ft
Moderate stage: 467 ft
Major stage: 471 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, 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 Apr 25, 9:02 AM CDT, 1 hour 50 minutes earlier.

Area forecast discussion, Apr 25, 9:02 AM CDT, 1 hour 50 minutes before

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Hazardous weather outlook, Apr 25, 4:38 AM CDT, 6 hours 14 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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      <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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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 3:52 AM CDT	Gale Warning	LOT		38 hr
Apr 25, 3:52 AM CDT	Small Craft Advisory	LOT		42 hr
Apr 25, 9:15 AM CDT	River Flood Warning	LOT	Iroquois	4 days
Apr 25, 9:47 AM CDT	River Flood Advisory	LOT	Kankakee	24 hr
Apr 25, 9:15 AM CDT	River Flood Warning	LOT	Porter	13 days
Apr 25, 9:15 AM CDT	River Flood Warning	LOT	Jasper, Porter	13 days
Apr 25, 9:47 AM CDT	River Flood Advisory	LOT	Jasper	24 hr

Nearby

River Flood Warnings in Illinois, 2011 Every river flood warning in 2011

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.