Alert archive / Illinois / River Flood Warnings in 2016

River Flood Warning 12, NWS Chicago, IL

May 12, 2016DeKalb County, Illinois

NWS Chicago, IL issued this river flood warning at May 12, 2016, 11:29 AM CDT for DeKalb County, Illinois. It took effect at May 12, 2016, 4:00 PM CDT. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued: May 12, 2016, 11:29 AM CDT (16:29 UTC)
In effect from: May 12, 2016, 4:00 PM CDT
Expired: May 13, 2016, 8:42 AM CDT
In force: 17 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County DeKalb County, IL

The radar

The Chicago radar (KLOT), 65 km from the middle of the area, began a volume at 16:31 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 South Branch Kishwaukee River at De Kalb (DEKI2). The gauge peaked at 10.64 ft at May 12, 2016, 6:00 PM CDT.

Action stage: 8.5 ft
Minor stage: 10 ft
Moderate stage: 11 ft
Major stage: 12.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05439000, 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 12, 11:13 AM CDT, 16 minutes earlier.

Area forecast discussion, May 12, 11:13 AM CDT, 16 minutes before

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Hazardous weather outlook, May 12, 4:49 AM CDT, 6 hours 40 minutes before

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In the hours before

Local storm report, May 12, 6:43 AM CDT, 4 hours 46 minutes before

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Local storm report, May 12, 7:34 AM CDT, 3 hours 55 minutes before

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  <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">
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      </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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Local storm report, May 12, 7:48 AM CDT, 3 hours 41 minutes before

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<head>
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  <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>
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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
May 11, 8:34 PM CDT	Special Weather Statement	LOT	LaSalle	41 min
May 11, 8:44 PM CDT	Severe Thunderstorm Warning	LOT	LaSalle	31 min
May 11, 8:54 PM CDT	Dense Fog Advisory	LOT	Lake	6 hr
May 11, 9:13 PM CDT	River Flood Warning	LOT	Bureau, LaSalle, Putnam	4 days
May 11, 9:53 PM CDT	Special Weather Statement	LOT	Kendall	22 min
May 11, 11:07 PM CDT	Areal Flood Advisory	LOT	DeKalb, Lee, Ogle	3 hr
May 11, 11:24 PM CDT	Flash Flood Warning	LOT	Lee	6 hr
May 12, 12:14 AM CDT	Areal Flood Advisory	LOT	DeKalb, Kane	4 hr
May 12, 2:12 AM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Will	3 hr
May 12, 7:09 AM CDT	River Flood Warning	LOT	Will	37 hr
May 12, 7:09 AM CDT	River Flood Warning	LOT	Kane, Kendall	18 hr
May 12, 7:14 AM CDT	River Flood Advisory	LOT	LaSalle	67 hr
May 12, 7:14 AM CDT	River Flood Advisory	LOT	Cook	31 hr
May 12, 7:14 AM CDT	River Flood Advisory	LOT	Will	71 hr
May 12, 7:20 AM CDT	River Flood Advisory	LOT	DeKalb	31 hr
May 11, 8:02 PM CDT	River Flood Watch	LOT	Lake, Newton	4 days

Nearby

River Flood Warnings in Illinois, 2016 Every river flood warning in 2016

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.