Alert archive / Illinois / River Flood Warnings in 2018

River Flood Warning 76, NWS Chicago, IL

June 21, 2018McHenry County, Illinois

NWS Chicago, IL issued this river flood warning at Jun 21, 2018, 10:34 AM CDT for McHenry County, Illinois. It was in force for 21 days.

The area

The counties it named.

The facts

Issued: Jun 21, 2018, 10:34 AM CDT (15:34 UTC)
Expired: Jul 12, 2018, 10:34 AM CDT
In force: 21 days
Issued by: NWS Chicago, IL
Flood severity: Minor

County McHenry County, IL

The radar

The Milwaukee radar (KMKX), 72 km from the middle of the area, began a volume at 15:38 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 McHenry (Stratton Lock and Dam) tailwater (MHYI2). The gauge peaked at 5.55 ft at Jun 27, 2018, 11:00 AM CDT.

Action stage: 3 ft
Minor stage: 4 ft
Moderate stage: 6 ft
Major stage: 7 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05549501, 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 Jun 21, 10:29 AM CDT, 5 minutes earlier.

Area forecast discussion, Jun 21, 10:29 AM CDT, 5 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, Jun 21, 4:10 AM CDT, 6 hours 24 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>

In the hours before

Local storm report, Jun 21, 7:39 AM CDT, 2 hours 55 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, Jun 21, 7:46 AM CDT, 2 hours 48 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, Jun 21, 9:12 AM CDT, 1 hour 22 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, Jun 21, 9:42 AM CDT, 52 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, Jun 21, 9:44 AM CDT, 50 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, Jun 21, 10:02 AM CDT, 32 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
Jun 20, 8:34 PM CDT	River Flood Advisory	LOT	Will	14 hr
Jun 20, 8:34 PM CDT	River Flood Advisory	LOT	Kane, McHenry	7 days
Jun 20, 8:34 PM CDT	River Flood Advisory	LOT	LaSalle	3 days
Jun 20, 8:39 PM CDT	River Flood Warning	LOT	Ogle	48 hr
Jun 20, 8:39 PM CDT	River Flood Warning	LOT	Iroquois	38 hr
Jun 20, 10:44 PM CDT	Areal Flood Advisory	LOT	Ford, Iroquois, LaSalle, Livingston	3 hr
Jun 21, 3:18 AM CDT	Small Craft Advisory	LOT		48 hr
Jun 21, 3:28 AM CDT	Flash Flood Watch	LOT	Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more	34 hr
Jun 21, 3:33 AM CDT	Beach Hazards Statement	LOT	Lake	48 hr
Jun 21, 7:46 AM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Grundy, Iroquois, Kane, Kankakee and 5 more	4 hr
Jun 21, 9:39 AM CDT	River Flood Warning	LOT	Boone	25 hr
Jun 21, 10:10 AM CDT	River Flood Warning	LOT	Lake	11 days
Jun 21, 10:10 AM CDT	River Flood Warning	LOT	Will	3 days
Jun 21, 10:20 AM CDT	River Flood Advisory	LOT	Cook	5 days
Jun 21, 10:20 AM CDT	River Flood Advisory	LOT	Cook	63 hr
Jun 21, 10:20 AM CDT	River Flood Advisory	LOT	Will	3 days
Jun 21, 10:20 AM CDT	River Flood Advisory	LOT	Grundy	48 hr
Jun 21, 10:20 AM CDT	River Flood Advisory	LOT	Lake	57 hr
Jun 21, 10:34 AM CDT	River Flood Warning	LOT	Kane, McHenry	13 days
Jun 21, 10:34 AM CDT	River Flood Warning	LOT	Kane, Kendall	11 days
Jun 21, 10:34 AM CDT	River Flood Warning	LOT	LaSalle	3 days
Jun 21, 10:34 AM CDT	River Flood Warning	LOT	LaSalle	61 hr
Jun 21, 10:57 AM CDT	Areal Flood Advisory	LOT	Boone, DeKalb, McHenry, Ogle, Winnebago	4 hr
Jun 21, 11:18 AM CDT	River Flood Warning	LOT	Bureau, LaSalle, Putnam	9 days
Jun 21, 11:22 AM CDT	River Flood Advisory	LOT	LaSalle	24 hr
Jun 21, 11:44 AM CDT	Areal Flood Warning	LOT	Cook, DuPage, Will	9 hr
Jun 21, 11:56 AM CDT	Areal Flood Advisory	LOT	Kane, Lake, McHenry	3 hr
Jun 21, 1:44 PM CDT	River Flood Warning	LOT	Cook	20 hr
Jun 21, 1:44 PM CDT	River Flood Warning	LOT	Cook	45 hr
Jun 21, 3:51 PM CDT	River Flood Warning	LOT	Cook	4 days
Jun 21, 3:51 PM CDT	River Flood Warning	LOT	Cook	52 hr
Jun 21, 3:51 PM CDT	River Flood Warning	LOT	Will	56 hr
Jun 21, 3:51 PM CDT	River Flood Warning	LOT	DuPage	42 hr
Jun 21, 4:07 PM CDT	River Flood Advisory	LOT	Lake	19 hr
Jun 21, 4:07 PM CDT	River Flood Advisory	LOT	Cook	3 days
Jun 21, 5:13 PM CDT	Areal Flood Advisory	LOT	LaSalle, Livingston	3 hr
Jun 21, 5:50 PM CDT	Areal Flood Advisory	LOT	LaSalle, Livingston	3 hr
Jun 21, 6:19 PM CDT	Areal Flood Advisory	LOT	DeKalb, Grundy, Kane, Kendall, LaSalle, Lee and 1 more	3 hr
Jun 21, 1:44 PM CDT	River Flood Warning	LOT	Lake	21 hr
Jun 21, 3:51 PM CDT	River Flood Warning	LOT	Lake, Newton	24 hr
Jun 21, 4:07 PM CDT	River Flood Advisory	LOT	Jasper, Porter	6 hr
Jun 21, 4:07 PM CDT	River Flood Advisory	LOT	Newton	64 hr

Nearby

River Flood Warnings in Illinois, 2018 Every 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.