Alert archive / Illinois / River Flood Warnings in 2015

River Flood Warning 7, NWS Chicago, IL

April 9, 2015Cook County, Illinois

NWS Chicago, IL issued this river flood warning at Apr 9, 2015, 3:15 PM CDT for Cook County, Illinois. It took effect at Apr 10, 2015, 5:00 AM CDT. It was in force for 28 hr.

The area

The counties it named.

The facts

Issued: Apr 9, 2015, 3:15 PM CDT (20:15 UTC)
In effect from: Apr 10, 2015, 5:00 AM CDT
Expired: Apr 11, 2015, 9:00 AM CDT
In force: 28 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Cook County, IL

The radar

The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 20:17 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 Des Plaines River near Des Plaines (DSPI2). The gauge peaked at 14.46 ft at Apr 11, 2015, 3:00 AM CDT.

Action stage: 13.5 ft
Minor stage: 15 ft
Moderate stage: 18 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05529000, 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 9, 3:02 PM CDT, 13 minutes earlier.

Area forecast discussion, Apr 9, 3:02 PM CDT, 13 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, Apr 9, 11:20 AM CDT, 3 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>

In the hours before

Local storm report, Apr 9, 10:58 AM CDT, 4 hours 17 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, Apr 9, 12:56 PM CDT, 2 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1256 PM CDT THU APR 09 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 AM     HEAVY RAIN       LIBERTYVILLE            42.28N 87.97W
04/09/2015  M1.61 INCH       LAKE               IL   TRAINED SPOTTER

            10 HOUR TOTAL, LAKE COUNTY SKYWARN

&&

KER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 10:11 PM CDT	Marine Dense Fog Advisory	LOT		17 hr
Apr 8, 11:13 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, Will	47 min
Apr 8, 11:13 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb	47 min
Apr 8, 11:35 PM CDT	Severe Thunderstorm Warning	LOT	Boone, DeKalb, Kane, McHenry	40 min
Apr 9, 12:05 AM CDT	Special Weather Statement	LOT	Will	25 min
Apr 9, 12:17 AM CDT	Severe Thunderstorm Warning	LOT	Cook, Will	43 min
Apr 9, 12:27 AM CDT	Severe Thunderstorm Warning	LOT	Kane, McHenry	23 min
Apr 9, 12:40 AM CDT	Severe Thunderstorm Warning	LOT	Cook	24 min
Apr 9, 3:36 AM CDT	Gale Watch	LOT		6 hr
Apr 9, 9:22 AM CDT	Gale Warning	LOT		34 hr
Apr 9, 10:22 AM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Kane, Lake	3 hr
Apr 9, 3:11 PM CDT	Special Marine Warning	LOT		49 min
Apr 9, 3:15 PM CDT	River Flood Warning	LOT	Cook	52 hr
Apr 9, 3:23 PM CDT	River Flood Advisory	LOT	Lake	4 days
Apr 9, 3:23 PM CDT	River Flood Advisory	LOT	Will	70 hr
Apr 9, 3:31 PM CDT	River Flood Advisory	LOT	Cook	36 hr
Apr 9, 5:27 PM CDT	Severe Thunderstorm Warning	LOT	Boone, Winnebago	18 min
Apr 9, 6:09 PM CDT	Tornado Warning	LOT	Boone, DeKalb, Ogle, Winnebago	36 min
Apr 9, 6:11 PM CDT	Severe Thunderstorm Warning	LOT	Lee, Ogle	34 min
Apr 9, 6:27 PM CDT	Severe Thunderstorm Warning	LOT	Ogle	33 min
Apr 9, 6:35 PM CDT	Tornado Warning	LOT	Lee, Ogle	25 min
Apr 9, 6:37 PM CDT	Tornado Warning	LOT	Boone, Winnebago	23 min
Apr 9, 6:49 PM CDT	Severe Thunderstorm Warning	LOT	Ogle, Winnebago	26 min
Apr 9, 6:56 PM CDT	Tornado Warning	LOT	Boone, McHenry	34 min
Apr 9, 6:58 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	LOT	Boone, DeKalb, Ogle, Winnebago	47 min
Apr 9, 12:12 AM CDT	Special Weather Statement	LOT	Porter	33 min
Apr 9, 5:27 AM CDT	Special Weather Statement	LOT	Benton	48 min

Nearby

River Flood Warnings in Illinois, 2015 Every river flood warning in 2015

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.