Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 155, NWS Tulsa, OK

April 30, 2024Osage County, Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 30, 2024, 8:34 PM CDT for Osage County, Washington County, Oklahoma. It was in force for 56 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 30, 2024, 8:34 PM CDT (01:34 UTC)
Expired: Apr 30, 2024, 9:30 PM CDT
In force: 56 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Osage County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 76 km from the middle of the area, began a volume at 01:34 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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.6 hours before the alert went out and 197 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: 2804 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1037 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 13.2

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 6:24 PM CDT, 2 hours 10 minutes earlier.

Area forecast discussion, Apr 30, 6:24 PM CDT, 2 hours 10 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 30, 4:31 PM CDT, 4 hours 3 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
431 PM CDT Tue Apr 30 2024

ARZ001-002-010-011-019-020-029-OKZ049-053>076-011045-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
431 PM CDT Tue Apr 30 2024

...LOW TO MODERATE THREAT OF SEVERE STORMS & FLOODING TONIGHT...

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...Today and Tonight.
TORNADO.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...After 7 PM this Evening.

SEVERE THUNDERSTORM.
	RISK...Elevated.
	AREA...Northeast Oklahoma.
	ONSET...After 7 PM this Evening.

FLASH FLOOD AND HEAVY RAIN.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...After 7 PM this Evening.

DISCUSSION...
Thunderstorms have increased in coverage this afternoon along a
front and dryline across western Oklahoma and Kansas. Some of
this activity is expected to move into northeast Oklahoma this
evening and could linger into the overnight hours. Large hail and
spotty damaging wind will be the primary threats initially with
the more discrete cells. A low tornado threat will also exist with
any discrete cells, especially if any storms come into the area
from the west off the dryline. Later on tonight, increasing storm
coverage along and behind an advancing outflow will reduce the
tornado potential, but will increase damaging wind potential.

There is potential for storms to train over the same areas close
to the Kansas border near the stalling front, which will yield an
increased potential for locally heavy rainfall and flash
flooding. A flood watch is in effect for portions of far northeast
Oklahoma near the Kansas border from 9 PM tonight to 10 AM
Wednesday.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Likely.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
WEDNESDAY...Thunderstorm Potential...High Wind Potential...Heavy Rain Potential.
THURSDAY...Severe Thunderstorm Potential...High Wind Potential...Heavy Rain Potential.
FRIDAY...Thunderstorm Potential.
SATURDAY...Severe Thunderstorm Potential.
SUNDAY...Thunderstorm Potential...Heavy Rain Potential.
MONDAY...Thunderstorm Potential...High Wind Potential.

EXTENDED DISCUSSION...
Unsettled weather will prevail through the period with several
rounds of showers and thunderstorms expected. The greatest
coverage of storms will likely be Thursday into Thursday evening
as a cold front moves through the area and stalls near the Red
River. There is an elevated risk of severe weather during this
time frame.

weather.gov/tulsa contains additional information.

In the hours before

Local storm report, Apr 30, 6:08 PM CDT, 2 hours 26 minutes before

Preliminary Local Storm Report
National Weather Service Tulsa OK
608 PM CDT Tue Apr 30 2024

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

0723 AM     Tornado          2 N Mcalester           34.96N 95.77W
04/26/2024                   Pittsburg          OK   Emergency Mngr

            This tornado moved across the northwest side
            of McAlester, damaging the roofs of homes,
            uprooting trees, and snapping power poles.
            The damage survey was conducted by Pittsburg
            County/McAlester Emergency Mananagement.

&&

EJC

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 8:45 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Osage	45 min
Apr 30, 9:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Nowata	51 min
Apr 30, 9:30 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	45 min
Apr 30, 9:38 PM CDT	Special Weather Statement	TSA	Nowata	52 min
Apr 30, 9:43 PM CDT	Special Weather Statement	TSA	Craig	47 min
Apr 30, 9:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Osage	39 min
Apr 30, 9:58 PM CDT	Special Weather Statement	TSA	Nowata	32 min
Apr 30, 10:13 PM CDT	Severe Thunderstorm Warning	TSA	Osage	47 min
Apr 30, 10:16 PM CDT	Special Weather Statement	TSA	Washington	44 min
Apr 30, 10:17 PM CDT	Special Weather Statement	TSA	Ottawa	58 min
Apr 30, 10:32 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Osage, Pawnee	43 min
Apr 30, 10:33 PM CDT	Areal Flood Advisory	TSA	Craig, Nowata, Osage, Washington	3 hr
Apr 30, 11:14 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	12 min
May 1, 12:03 AM CDT	Special Weather Statement	TSA	Pawnee	42 min
May 1, 12:29 AM CDT	Special Weather Statement	TSA	Tulsa	61 min
May 1, 12:52 AM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	22 min
May 1, 1:18 AM CDT	Areal Flood Advisory	TSA	Creek, Pawnee, Tulsa, Wagoner	3 hr
May 1, 2:07 AM CDT	Special Weather Statement	TSA	Muskogee	38 min
May 1, 2:17 AM CDT	Areal Flood Advisory	TSA	Muskogee, Okmulgee, Wagoner	3 hr
May 1, 10:44 AM CDT	Special Weather Statement	TSA	Choctaw	31 min
May 1, 10:53 AM CDT	Special Weather Statement	TSA	Pushmataha	37 min
May 1, 10:56 AM CDT	Areal Flood Advisory	TSA	LeFlore, Pushmataha	3 hr
May 1, 1:09 PM CDT	Special Weather Statement	TSA	Haskell	51 min
May 1, 2:42 PM CDT	River Flood Warning	TSA	LeFlore	19 hr
May 1, 5:10 PM CDT	Special Weather Statement	TSA	LeFlore	35 min
May 1, 1:48 PM CDT	Special Weather Statement	TSA	Sebastian	42 min
May 1, 2:27 PM CDT	Special Weather Statement	TSA	Sebastian	48 min
May 1, 3:38 PM CDT	River Flood Advisory	TSA	Franklin, Johnson, Logan	41 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2024 Every severe thunderstorm warning in 2024

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.