Alert archive / Iowa / River Flood Warnings in 2026

River Flood Warning 65, NWS Quad Cities, IA

August 15, 2026Des Moines County, Henry County, Lee County, Iowa

NWS Quad Cities, IA issued this river flood warning at Aug 15, 2026, 9:15 AM CDT for Des Moines County, Henry County, Lee County, Iowa. It took effect at Aug 15, 2026, 9:00 PM CDT. It was in force for 45 hr.

The area

The counties it named.

The facts

Issued
Aug 15, 2026, 9:15 AM CDT (14:15 UTC)
In effect from
Aug 15, 2026, 9:00 PM CDT
Expired
Aug 17, 2026, 5:54 PM CDT
In force
45 hr
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Flood severity
Minor

Counties Des Moines County, IA, Henry County, IA, Lee County, IA

The radar

The Quad Cities radar (KDVN), 109 km from the middle of the area, began a volume at 14:15 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 Skunk River at Augusta (AGSI4). The gauge peaked at 16.07 ft at Aug 15, 2026, 7:00 PM CDT.

actionminormoderate5101508/1508/1608/1708/18
Action stage
14 ft
Minor stage
15 ft
Moderate stage
17 ft
Major stage
20 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05474000, 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 Aug 15, 6:45 AM CDT, 2 hours 30 minutes earlier.

Area forecast discussion, Aug 15, 6:45 AM CDT, 2 hours 30 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, Aug 15, 3:16 AM CDT, 5 hours 59 minutes before
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
316 AM CDT Sat Aug 15 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-160830-
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-
316 AM CDT Sat Aug 15 2026

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

Rounds of heavy rain producing storms will continue into early
Saturday morning. There will also be a low end severe threat in
storms south of Interstate 80, with isolated severe gusts being
the main concern. Very heavy rainfall and flash flooding will be
the primary concern, especially where storms move repeatedly
over the same area. Significant flash flooding is possible,
especially in urban areas and in counties that saw excessive
amounts of rain last night. Several area rivers will be on the
rise and have the potential to reach bankfull or even flood stage
over the weekend and into early next week.

Between the episodes of storms, high heat and humidity may
produce dangerous Heat Index readings near or over 100 degrees
Saturday afternoon south of Highway 34 in southeast Iowa.

More rounds of showers and storms are possible tonight into
Sunday morning. Heavy rainfall and lightning will be the primary
threats with any storm, with a low end severe threat for isolated
severe wind gusts as well.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

We may see some residual showers and storms Sunday morning,
largely posing a heavy rainfall and localized flash flood threat.

Tuesday night into Wednesday, a system will bring the chance for
strong to severe storms. The Storm Prediction Center has
highlighted much of our area in a Day 4 Slight Risk for severe
storms, or level 2 of 5 risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely through Saturday morning and then
again Saturday night. Reports of flooding would also be
appreciated.

ERVIN/GUNKEL

In the hours before

Local storm report, Aug 15, 7:28 AM CDT, 1 hour 47 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, Aug 15, 7:46 AM CDT, 1 hour 29 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, Aug 15, 7:51 AM CDT, 1 hour 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>
Local storm report, Aug 15, 9:09 AM CDT, 6 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, Aug 15, 9:14 AM CDT, 1 minute 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, Aug 15, 9:15 AM CDT, 0 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 Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 14, 11:11 PM CDTSevere Thunderstorm WarningDVNLee64 min
Aug 15, 12:58 AM CDTFlash Flood WarningDVNLee6 hr
Aug 15, 3:19 AM CDTFlash Flood WarningDVNDes Moines, Henry, Jefferson, Lee, Van Buren5 hr
Aug 15, 8:33 AM CDTAreal Flood WarningDVNLee6 hr
Aug 15, 5:31 PM CDTSpecial Weather StatementDVNLee29 min
Aug 15, 5:41 PM CDTSevere Thunderstorm WarningDVNLee, Van Buren34 min
Aug 15, 12:02 AM CDTSevere Thunderstorm WarningDVNHancock58 min
Aug 15, 12:31 AM CDTSevere Thunderstorm WarningDVNHancock, McDonough74 min
Aug 15, 1:55 AM CDTFlash Flood WarningDVNHenderson, McDonough, Warren6 hr
Aug 15, 7:14 AM CDTRiver Flood WarningDVNHancock, McDonough4 days

Nearby

River Flood Warnings in Iowa, 2026Every river flood warning in 2026

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.