Alert archive / Illinois / River Flood Warnings in 2018

River Flood Warning 22, NWS Chicago, IL

February 20, 2018Kane County, McHenry County, Illinois

NWS Chicago, IL issued this river flood warning at Feb 20, 2018, 3:27 AM CST for Kane County, McHenry County, Illinois. It took effect at Feb 20, 2018, 10:30 PM CST. It was in force for 11 days.

The area

The counties it named.

The facts

Issued
Feb 20, 2018, 3:27 AM CST (09:27 UTC)
In effect from
Feb 20, 2018, 10:30 PM CST
Expired
Mar 4, 2018, 8:49 AM CST
In force
11 days
Issued by
NWS Chicago, IL
Area
Storm-based polygon
Flood severity
Minor

Counties Kane County, IL, McHenry County, IL

The radar

The Chicago radar (KLOT), 66 km from the middle of the area, began a volume at 09:26 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 Fox River at Algonquin tailwater (AFBI2). The gauge peaked at 9.88 ft at Feb 26, 2018, 8:00 PM CST.

actionminormoderate681002/2002/2102/2202/2302/2402/2502/2602/2702/2803/0103/0203/0303/0403/05
Action stage
9 ft
Minor stage
9.5 ft
Moderate stage
10.5 ft
Major stage
12 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05550001, 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 Feb 20, 3:07 AM CST, 20 minutes earlier.

Area forecast discussion, Feb 20, 3:07 AM CST, 20 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>
Hazardous weather outlook, Feb 19, 4:23 PM CST, 11 hours 4 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>

In the hours before

Local storm report, Feb 19, 10:33 PM CST, 4 hours 54 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>
Local storm report, Feb 19, 11:34 PM CST, 3 hours 53 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.

IssuedProductOfficeCountiesLasted
Feb 19, 8:24 PM CSTDense Fog AdvisoryLOTBoone, DeKalb, Kane, Lake, Lee, McHenry and 2 more5 hr
Feb 19, 8:31 PM CSTRiver Flood AdvisoryLOTCook36 hr
Feb 19, 8:33 PM CSTRiver Flood WarningLOTCook67 hr
Feb 19, 9:13 PM CSTRiver Flood WarningLOTWill3 days
Feb 19, 9:19 PM CSTRiver Flood WatchLOTKane, McHenry51 hr
Feb 19, 9:19 PM CSTRiver Flood WatchLOTKane, Kendall4 days
Feb 19, 9:19 PM CSTRiver Flood WatchLOTLaSalle4 days
Feb 19, 9:29 PM CSTRiver Flood WarningLOTDuPage56 hr
Feb 19, 9:52 PM CSTRiver Flood WarningLOTIroquois, Kankakee8 days
Feb 19, 10:01 PM CSTRiver Flood WatchLOTWinnebago3 days
Feb 19, 10:16 PM CSTRiver Flood AdvisoryLOTLee36 hr
Feb 19, 10:21 PM CSTRiver Flood WarningLOTGrundy, Will8 days
Feb 19, 10:44 PM CSTAreal Flood WarningLOTCook, DeKalb, DuPage, Ford, Grundy, Iroquois and 8 more12 hr
Feb 19, 11:46 PM CSTRiver Flood AdvisoryLOTWill36 hr
Feb 20, 2:49 AM CSTMarine Dense Fog AdvisoryLOT18 hr
Feb 20, 3:17 AM CSTRiver Flood AdvisoryLOTGrundy36 hr
Feb 20, 3:27 AM CSTRiver Flood WarningLOTKane, Kendall11 days
Feb 20, 3:27 AM CSTRiver Flood WarningLOTLaSalle4 days
Feb 20, 3:45 AM CSTRiver Flood AdvisoryLOTCook36 hr
Feb 20, 3:51 AM CSTRiver Flood AdvisoryLOTDeKalb36 hr
Feb 20, 6:16 AM CSTRiver Flood AdvisoryLOTBoone3 days
Feb 20, 8:28 AM CSTRiver Flood WarningLOTLake6 days
Feb 20, 8:28 AM CSTRiver Flood WarningLOTLake7 days
Feb 20, 9:34 AM CSTRiver Flood WarningLOTWinnebago4 days
Feb 20, 10:00 AM CSTRiver Flood AdvisoryLOTWinnebago24 hr
Feb 20, 10:19 AM CSTRiver Flood WarningLOTWinnebago12 days
Feb 20, 10:19 AM CSTRiver Flood WarningLOTOgle10 days
Feb 20, 10:39 AM CSTRiver Flood WarningLOTWinnebago14 days
Feb 20, 10:45 AM CSTAreal Flood WarningLOTBoone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more24 hr
Feb 20, 10:56 AM CSTRiver Flood AdvisoryLOTLake58 hr
Feb 20, 10:56 AM CSTRiver Flood AdvisoryLOTCook67 hr
Feb 20, 11:01 AM CSTRiver Flood WarningLOTCook66 hr
Feb 20, 11:01 AM CSTRiver Flood WarningLOTCook52 hr
Feb 20, 11:46 AM CSTRiver Flood WarningLOTBoone51 hr
Feb 20, 11:59 AM CSTRiver Flood WarningLOTLaSalle4 days
Feb 20, 12:44 PM CSTRiver Flood WarningLOTGrundy47 hr
Feb 20, 1:21 PM CSTRiver Flood WarningLOTWill53 hr
Feb 20, 1:21 PM CSTSpecial Marine WarningLOT84 min
Feb 20, 1:27 PM CSTSpecial Weather StatementLOTCook, Will48 min
Feb 20, 2:26 PM CSTSpecial Weather StatementLOTFord, Iroquois64 min
Feb 20, 2:49 PM CSTRiver Flood WarningLOTCook52 hr
Feb 20, 2:56 PM CSTRiver Flood WarningLOTWinnebago12 days
Feb 20, 2:56 PM CSTRiver Flood WarningLOTLee65 hr
Feb 20, 3:31 PM CSTWinter Weather AdvisoryLOTDeKalb, DuPage, Ford, Grundy, Iroquois, Kane and 6 more15 hr
Feb 20, 4:06 PM CSTSmall Craft AdvisoryLOT29 hr
Feb 19, 9:52 PM CSTRiver Flood WarningLOTJasper11 days
Feb 20, 3:00 AM CSTRiver Flood WarningLOTLake31 hr

Nearby

River Flood Warnings in Illinois, 2018Every river flood warning in 2018

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.