Alert archive / Illinois / River Flood Warnings in 2017

River Flood Warning 104, NWS Chicago, IL

July 20, 2017Winnebago County, Illinois

NWS Chicago, IL issued this river flood warning at Jul 20, 2017, 2:51 PM CDT for Winnebago County, Illinois. It took effect at Jul 20, 2017, 4:54 PM CDT. It was in force for 6 days.

The area

The counties it named.

The facts

Issued: Jul 20, 2017, 2:51 PM CDT (19:51 UTC)
In effect from: Jul 20, 2017, 4:54 PM CDT
Expired: Jul 26, 2017, 9:55 AM CDT
In force: 6 days
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Winnebago County, IL

The radar

The Milwaukee radar (KMKX), 86 km from the middle of the area, began a volume at 19:53 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 Kishwaukee River near Perryville (PRYI2). The gauge peaked at 15.37 ft at Jul 23, 2017, 10:00 AM CDT.

Action stage: 11.5 ft
Minor stage: 12 ft
Moderate stage: 18 ft
Major stage: 22 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05440000, 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 Jul 20, 2:45 PM CDT, 6 minutes earlier.

Area forecast discussion, Jul 20, 2:45 PM CDT, 6 minutes before

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Hazardous weather outlook, Jul 20, 1:19 PM CDT, 1 hour 32 minutes before

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<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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:21 PM CDT	Severe Thunderstorm Warning	LOT	Ogle, Winnebago	54 min
Jul 19, 7:54 PM CDT	Severe Thunderstorm Warning	LOT	Boone, DeKalb, Lee, McHenry, Ogle, Winnebago	51 min
Jul 19, 8:05 PM CDT	Special Marine Warning	LOT		25 min
Jul 19, 8:16 PM CDT	Tornado Warning	LOT	Boone, DeKalb, Ogle, Winnebago	29 min
Jul 19, 8:24 PM CDT	Special Marine Warning	LOT		2 hr
Jul 19, 8:30 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb, LaSalle, Lee	30 min
Jul 19, 8:34 PM CDT	Severe Thunderstorm Warning	LOT	Boone, Cook, DeKalb, DuPage, Kane, Kendall and 4 more	56 min
Jul 19, 9:08 PM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage, Grundy, Kendall, Will	67 min
Jul 19, 9:55 PM CDT	Special Weather Statement	LOT	Kankakee	35 min
Jul 19, 10:26 PM CDT	Special Marine Warning	LOT		64 min
Jul 19, 10:37 PM CDT	Special Weather Statement	LOT	Ford, Iroquois	53 min
Jul 19, 10:49 PM CDT	Special Weather Statement	LOT	Boone, DeKalb, Kane, Lake, McHenry, Winnebago	56 min
Jul 20, 3:28 AM CDT	Special Weather Statement	LOT	Boone, Ogle, Winnebago	47 min
Jul 20, 3:48 AM CDT	Severe Thunderstorm Warning	LOT	Boone, DeKalb, Ogle, Winnebago	42 min
Jul 20, 4:21 AM CDT	Severe Thunderstorm Warning	LOT	Boone, DeKalb, Kane, Ogle	39 min
Jul 20, 4:38 AM CDT	Special Weather Statement	LOT	Lee, Ogle	52 min
Jul 20, 6:47 AM CDT	Special Weather Statement	LOT	DeKalb, LaSalle, Lee	43 min
Jul 20, 7:14 AM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Kane, Kendall, Lake, Will	2 hr
Jul 20, 7:21 AM CDT	River Flood Advisory	LOT	Winnebago	7 days
Jul 20, 7:21 AM CDT	River Flood Advisory	LOT	Ogle	5 days
Jul 20, 7:21 AM CDT	River Flood Advisory	LOT	Lee	66 hr
Jul 20, 7:27 AM CDT	Special Weather Statement	LOT	Grundy, Kendall, LaSalle, Livingston	48 min
Jul 20, 8:15 AM CDT	River Flood Warning	LOT	Cook	5 days
Jul 20, 9:23 AM CDT	River Flood Watch	LOT	Winnebago	24 hr
Jul 20, 9:30 AM CDT	River Flood Advisory	LOT	Boone	4 days
Jul 20, 9:30 AM CDT	River Flood Advisory	LOT	Winnebago	52 hr
Jul 20, 9:30 AM CDT	River Flood Advisory	LOT	Winnebago	7 days
Jul 20, 9:30 AM CDT	River Flood Advisory	LOT	Winnebago	7 days
Jul 20, 2:15 PM CDT	Flash Flood Watch	LOT	Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more	42 hr
Jul 20, 2:51 PM CDT	River Flood Warning	LOT	Winnebago	19 days

Nearby

River Flood Warnings in Illinois, 2017 Every river flood warning in 2017

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.