Alert archive / Missouri / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 67, NWS Kansas City, MO

April 20, 2023Andrew County, Buchanan County, Holt County, Missouri; Doniphan County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Apr 20, 2023, 4:25 AM CDT for Andrew County, Buchanan County, Holt County, Missouri; Doniphan County, Kansas. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 20, 2023, 4:25 AM CDT (09:25 UTC)
Expired: Apr 20, 2023, 5:00 AM CDT
In force: 35 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Doniphan County, KS, Andrew County, MO, Buchanan County, MO, Holt County, MO

The radar

The Pleasant Hill radar (KEAX), 135 km from the middle of the area, began a volume at 09:27 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 19, 10:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 9.4 hours before the alert went out and 113 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1951 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1353 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 309 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 10.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 20, 3:55 AM CDT, 30 minutes earlier.

Area forecast discussion, Apr 20, 3:55 AM CDT, 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, Apr 19, 12:45 PM CDT, 15 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
1245 PM CDT Wed Apr 19 2023

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-201745-
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-
1245 PM CDT Wed Apr 19 2023

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

.DAY ONE...This Afternoon and Tonight

 Strong to severe storms are possible this evening and overnight
 across northeastern KS and northwestern MO. Large hail, damaging
 winds, and a few tornadoes are possible. Locally heavy rainfall is
 also possible.

 Strong non-thunderstorm wind gusts are expected this evening and
 overnight. Wind gusts to 45 mph are expected.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

 Widespread subfreezing temperatures are expected Sunday morning.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

In the hours before

Local storm report, Apr 20, 3:40 AM CDT, 45 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 20, 3:43 AM CDT, 42 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, Apr 20, 4:07 AM CDT, 18 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, Apr 20, 4:12 AM 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>

Special weather statement, Apr 20, 4:18 AM CDT, 7 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 20, 4:23 AM CDT, 2 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
Apr 19, 7:48 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	42 min
Apr 19, 8:25 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway	35 min
Apr 19, 8:53 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Atchison, Holt, Nodaway	24 min
Apr 19, 8:55 PM CDT	Special Weather Statement	EAX	Andrew	35 min
Apr 19, 9:33 PM CDT	Special Weather Statement	EAX	Clay, Platte	27 min
Apr 19, 10:02 PM CDT	Special Weather Statement	EAX	Clay, Clinton, Platte	43 min
Apr 19, 10:15 PM CDT	Special Weather Statement	EAX	Caldwell	30 min
Apr 19, 10:46 PM CDT	Special Weather Statement	EAX	Livingston	29 min
Apr 19, 10:56 PM CDT	Severe Thunderstorm Warning	EAX	Platte	20 min
Apr 19, 11:52 PM CDT	Special Weather Statement	EAX	Adair, Putnam, Sullivan	38 min
Apr 20, 12:07 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Holt	23 min
Apr 20, 12:19 AM CDT	Special Weather Statement	EAX	Schuyler	26 min
Apr 20, 3:43 AM CDT	Severe Thunderstorm Warning	EAX	Platte	32 min
Apr 20, 4:07 AM CDT	Special Weather Statement	EAX	Clinton, Platte	38 min
Apr 20, 4:12 AM CDT	Special Weather Statement	EAX	Holt	33 min
Apr 20, 4:18 AM CDT	Special Weather Statement	EAX	Holt	27 min
Apr 20, 4:19 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	29 min
Apr 20, 4:57 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clinton, DeKalb, Gentry, Nodaway and 1 more	48 min
Apr 20, 5:11 AM CDT	Severe Thunderstorm Warning	EAX	Platte	25 min
Apr 20, 5:43 AM CDT	Special Weather Statement	EAX	Caldwell, Clay, Clinton	47 min
Apr 20, 6:23 AM CDT	Special Weather Statement	EAX	Carroll, Cass, Jackson, Lafayette, Ray	37 min
Apr 20, 6:37 AM CDT	Special Weather Statement	EAX	Randolph	23 min
Apr 20, 7:01 AM CDT	Areal Flood Advisory	EAX	Cass, Clay, Jackson, Platte	64 min
Apr 19, 8:16 PM CDT	Special Weather Statement	EAX	Atchison	29 min
Apr 19, 8:49 PM CDT	Special Weather Statement	EAX	Leavenworth, Wyandotte	41 min
Apr 19, 10:24 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth, Wyandotte	36 min
Apr 20, 3:04 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	26 min
Apr 20, 3:19 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Leavenworth, Wyandotte	26 min
Apr 20, 3:48 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	42 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2023 Severe Thunderstorm Warnings in Kansas, 2023 Every severe thunderstorm warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.