Alert archive / Missouri / River Flood Warnings in 2026

River Flood Warning 76, NWS Kansas City, MO

May 18, 2026Johnson County, Pettis County, Missouri

NWS Kansas City, MO issued this river flood warning at May 18, 2026, 9:07 AM CDT for Johnson County, Pettis County, Missouri. It took effect at May 19, 2026, 4:19 AM CDT. It was in force for 38 hr.

The area

The counties it named.

The facts

Issued: May 18, 2026, 9:07 AM CDT (14:07 UTC)
In effect from: May 19, 2026, 4:19 AM CDT
Expired: May 20, 2026, 6:37 PM CDT
In force: 38 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: Moderate

Counties Johnson County, MO, Pettis County, MO

The radar

The Pleasant Hill radar (KEAX), 63 km from the middle of the area, began a volume at 14:07 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 Blackwater River near Valley City (VLYM7). The gauge peaked at 27.49 ft at May 20, 2026, 1:00 AM CDT.

Action stage: 17 ft
Minor stage: 22 ft
Moderate stage: 25 ft
Major stage: 31 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06907700, 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 Kansas City, MO wrote its last area forecast discussion before this river flood warning went out at May 18, 6:52 AM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, May 18, 6:52 AM CDT, 2 hours 15 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 18, 5:09 AM CDT, 3 hours 58 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
0509 AM CDT Mon May 18 2026

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-191009-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
0509 AM CDT Mon May 18 2026

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Through tonight.

Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.KEY MESSAGES...

- Showers and thunderstorms continue across the region this
  morning, with locally moderate to heavy rainfall possible.

- Severe thunderstorms are likely late afternoon into late
  tonight.

- Far NW Missouri and NE Kansas will be under the greatest
  threat for all severe hazards by late afternoon and early
  evening.

- Storms should congeal into a line of thunderstorms by this
  evening, and move east southeast through the region late
  tonight. Once this occurs, damaging wind gusts should become
  the primary hazard, but a few brief tornadoes may be possible.

- Moderate to heavy rain will be possible again with the storms
  tonight. A flood watch is in effect through almost the entire
  CWA through 7 AM Tuesday.

- Cooler temperatures arrive for Tuesday through Thursday before
  heating up once more by this weekend.

In the hours before

Special weather statement, May 18, 4:01 AM CDT, 5 hours 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, May 18, 4:02 AM CDT, 5 hours 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>

Special weather statement, May 18, 4:15 AM CDT, 4 hours 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>

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 9:33 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	72 min
May 17, 10:19 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway	56 min
May 17, 10:53 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Atchison, Gentry, Holt, Nodaway, Worth	52 min
May 17, 11:45 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Gentry, Grundy, Harrison, Mercer, Worth	45 min
May 18, 4:01 AM CDT	Special Weather Statement	EAX	Henry, Johnson	44 min
May 18, 4:15 AM CDT	Special Weather Statement	EAX	Chariton	30 min
May 18, 8:24 AM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	4 days
May 18, 8:24 AM CDT	River Flood Warning	EAX	Bates, Cass, Henry	60 hr
May 18, 9:07 AM CDT	River Flood Warning	EAX	Ray	20 hr
May 18, 9:07 AM CDT	River Flood Warning	EAX	Cooper, Saline	5 days
May 18, 9:45 AM CDT	Areal Flood Advisory	EAX	Bates, Cass, Henry	3 hr
May 18, 9:59 AM CDT	River Flood Warning	EAX	Jackson, Lafayette, Ray	68 hr
May 18, 9:59 AM CDT	River Flood Warning	EAX	Carroll, Lafayette, Saline	5 days
May 18, 9:59 AM CDT	River Flood Warning	EAX	Chariton, Howard, Saline	4 days
May 18, 9:59 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Saline	4 days
May 18, 9:59 AM CDT	River Flood Warning	EAX	Boone, Cooper, Howard, Moniteau	4 days
May 18, 10:12 AM CDT	River Flood Warning	EAX	Atchison, Holt	44 hr
May 18, 10:12 AM CDT	River Flood Warning	EAX	Andrew, Buchanan	3 days
May 18, 10:12 AM CDT	River Flood Warning	EAX	Andrew, Nodaway	44 hr
May 18, 10:20 AM CDT	River Flood Warning	EAX	Platte	5 days
May 18, 10:20 AM CDT	River Flood Warning	EAX	Platte	5 days
May 18, 10:42 AM CDT	River Flood Warning	EAX	Grundy, Livingston	34 hr
May 18, 10:42 AM CDT	River Flood Warning	EAX	Carroll, Chariton	6 days
May 18, 10:53 AM CDT	River Flood Warning	EAX	Adair, Macon, Putnam, Schuyler	10 hr
May 18, 1:52 PM CDT	River Flood Warning	EAX	Cooper	55 hr
May 18, 1:52 PM CDT	River Flood Warning	EAX	Cooper	55 hr
May 18, 1:52 PM CDT	River Flood Warning	EAX	Howard	41 hr
May 18, 4:27 PM CDT	Severe Thunderstorm Warning Destructive damage threat	EAX	Atchison	78 min
May 18, 4:34 PM CDT	Tornado Warning	EAX	Atchison	26 min
May 18, 4:55 PM CDT	Tornado Warning	EAX	Atchison	35 min
May 18, 5:14 PM CDT	Tornado Warning	EAX	Nodaway	46 min
May 18, 5:16 PM CDT	Tornado Warning Tornado observed	EAX	Atchison, Holt	44 min
May 18, 5:22 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Atchison, Holt, Nodaway	53 min
May 18, 5:41 PM CDT	Tornado Warning Considerable damage threat	EAX	Holt, Nodaway	49 min
May 18, 5:46 PM CDT	Areal Flood Advisory	EAX	Atchison, Holt, Nodaway	27 min
May 18, 6:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Atchison, Holt, Nodaway	39 min
May 18, 6:13 PM CDT	Flash Flood Warning	EAX	Atchison, Holt, Nodaway	4 hr
May 18, 6:29 PM CDT	Tornado Warning	EAX	Gentry, Nodaway, Worth	46 min
May 18, 6:33 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Gentry, Nodaway, Worth	57 min
May 18, 6:38 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	52 min
May 18, 6:58 PM CDT	Tornado Warning	EAX	Atchison	47 min
May 18, 12:35 PM CDT	River Flood Warning	EAX	Atchison, Leavenworth	40 hr

Nearby

River Flood Warnings in Missouri, 2026 Every 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.