Alert archive / Illinois / River Flood Warnings in 2020

River Flood Warning 37, NWS Quad Cities, IA

May 17, 2020Whiteside County, Illinois

NWS Quad Cities, IA issued this river flood warning at May 17, 2020, 11:19 AM CDT for Whiteside County, Illinois. It took effect at May 18, 2020, 7:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: May 17, 2020, 11:19 AM CDT (16:19 UTC)
In effect from: May 18, 2020, 7:00 AM CDT
Expired: May 18, 2020, 1:54 PM CDT
In force: 7 hr
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: Minor

County Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 58 km from the middle of the area, began a volume at 16:18 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 Rock River at Como (CMOI2). The gauge peaked at 12.22 ft at May 19, 2020, 1:00 PM CDT.

Action stage: 10 ft
Minor stage: 12.5 ft
Moderate stage: 15.5 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05443500, 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 Quad Cities, IA wrote its last area forecast discussion before this river flood warning went out at May 17, 6:42 AM CDT, 4 hours 37 minutes earlier.

Area forecast discussion, May 17, 6:42 AM CDT, 4 hours 37 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, May 17, 3:33 AM CDT, 7 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
333 AM CDT Sun May 17 2020

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-180845-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
333 AM CDT Sun May 17 2020

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms are expected today and will be the most numerous
this afternoon east of the Mississippi.

The Storm Prediction Center has a marginal risk of severe storms
east of a line from Freeport to Peoria, Illinois. If severe storms
develop the most likely time frame would be from mid-afternoon and
into the evening. The primary risk looks to be damaging winds.

The Rock river is experiencing flooding. Please see the latest
Flood Statements and Flood Warnings for details.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

There is a slight chance for thunderstorms Monday afternoon.  The
main threat from any thunderstorm would be occasional lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated but could be needed east of
the Mississippi this afternoon and evening.

In the hours before

Local storm report, May 17, 7:53 AM CDT, 3 hours 26 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, May 17, 8:47 AM CDT, 2 hours 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
847 AM CDT SUN MAY 17 2020

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

0830 AM     HEAVY RAIN       3 W MOUNT STERLING      40.62N 92.00W
05/17/2020  M1.20 INCH       VAN BUREN          IA   TRAINED SPOTTER

            24 HOUR TOTAL.

&&

12

Local storm report, May 17, 11:05 AM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1105 AM CDT SUN MAY 17 2020

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

1105 AM     HEAVY RAIN       1 W BETTENDORF          41.56N 90.49W
05/17/2020  M1.19 INCH       SCOTT              IA   TRAINED SPOTTER

            24 TOTAL.

&&

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 11:36 AM CDT	River Flood Warning	DVN	Hancock, McDonough	4 days
May 17, 1:20 PM CDT	Special Weather Statement	DVN	Putnam	10 min
May 17, 2:45 PM CDT	River Flood Warning	DVN	Henry	7 hr

Nearby

River Flood Warnings in Illinois, 2020 Every river flood warning in 2020

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.