Alert archive / Oklahoma / Flash Flood Warnings in 2024

Flash Flood Warning 41, NWS Norman, OK

May 23, 2024Bryan County, Oklahoma

NWS Norman, OK issued this flash flood warning at May 23, 2024, 11:24 PM CDT for Bryan County, Oklahoma. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 23, 2024, 11:24 PM CDT (04:24 UTC)
Expired: May 24, 2024, 4:30 AM CDT
In force: 5 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

County Bryan County, OK

The radar

The Norman radar (KTLX), 179 km from the middle of the area, began a volume at 04:25 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

Fort Worth, TX (KFWD), launched 00:00Z, 4.4 hours before the alert went out and 158 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: 298 J/kg
Mixed-layer CIN: -340 J/kg
Mixed-layer LCL: 1541 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this flash flood warning went out at May 23, 10:52 PM CDT, 32 minutes earlier.

Area forecast discussion, May 23, 10:52 PM CDT, 32 minutes before

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Hazardous weather outlook, May 23, 9:55 PM CDT, 1 hour 29 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
955 PM CDT Thu May 23 2024

OKZ004>048-050>052-TXZ083>090-250300-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
955 PM CDT Thu May 23 2024

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...Rest of Tonight...

.Thunderstorms...
Thunderstorms remain possible into the overnight hours across
portions of central and southern Oklahoma. Some of the storms
could be strong to severe storms with large hail and damaging
winds possible.

.Heavy Rain...
Heavy rain that could lead to flash flooding will also remain a
concern with the thunderstorms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

.Thunderstorms...
Thunderstorms will be possible on Friday afternoon across
southeast Oklahoma with a low-end risk for severe thunderstorms
with large hail and damaging wind gusts as the severe hazards.
Thunderstorms will be possible again on Saturday afternoon through
the evening with an increased risk for severe weather. Severe
hazards on Saturday will be large hail, damaging wind gusts, and
a few tornados possible. Thunderstorms chances will be returning
again next week on Wednesday.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

In the hours before

Local storm report, May 23, 10:14 PM CDT, 1 hour 10 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1014 PM CDT Thu May 23 2024

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

1000 PM     Non-Tstm Wnd Dmg Fletcher                34.82N 98.24W
05/23/2024                   Comanche           OK   Emergency Mngr

            Multiple power poles down. Possible heat
            burst.

&&

Local storm report, May 23, 10:32 PM CDT, 52 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1032 PM CDT Thu May 23 2024

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

1019 PM     Hail             1 W Lake Ellsworth      34.82N 98.37W
05/23/2024  E1.00 Inch       Comanche           OK   Public

            Report from mPING: Quarter (1.00 in.).

&&

Special weather statement, May 23, 10:34 PM CDT, 50 minutes before

Special Weather Statement
National Weather Service Norman OK
1034 PM CDT Thu May 23 2024

OKZ051-052-240400-
Marshall OK-Bryan OK-
1034 PM CDT Thu May 23 2024

...A strong thunderstorm will impact portions of southwestern Bryan
and southeastern Marshall Counties through 1100 PM CDT...

At 1031 PM CDT, Doppler radar was tracking a large severe
thunderstorm near Whitesboro and Collinsville Texas, moving
northeast at 25 mph. This severe storm will move toward Lake Texoma
and Kingston and eventually Durant. Boaters and campers on or near
Lake Texoma should prepare for this severe storm.

HAZARD...Wind gusts greater than 50 mph and large hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Colbert, Cartwright, Willis, Lake Texoma, and Mcbride.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

If on or near Lake Texoma, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 3385 9663 3389 9659 3390 9663 3392 9666
      3391 9668 3385 9669 3383 9671 3383 9676
      3386 9678 3387 9681 3387 9684 3385 9685
      3386 9687 3401 9680 3390 9648 3382 9655
      3382 9658
TIME...MOT...LOC 0331Z 209DEG 22KT 3368 9683

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

..speg.

Local storm report, May 23, 10:41 PM CDT, 43 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1041 PM CDT Thu May 23 2024

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

1030 PM     Non-Tstm Wnd Gst 4 NNW Fort Cobb         35.15N 98.46W
05/23/2024  M62 MPH          Caddo              OK   Mesonet

&&

Local storm report, May 23, 10:43 PM CDT, 41 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1043 PM CDT Thu May 23 2024

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

1035 PM     Non-Tstm Wnd Gst 4 NNW Fort Cobb         35.15N 98.46W
05/23/2024  M64 MPH          Caddo              OK   Mesonet

            Heat burst.

&&

Special weather statement, May 23, 10:54 PM CDT, 30 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:11 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Harmon, Jackson	49 min
May 23, 7:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer, Jackson	50 min
May 23, 7:28 PM CDT	Flash Flood Warning	OUN	Greer, Harmon, Jackson	4 hr
May 23, 7:36 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Greer, Jackson, Kiowa, Tillman	39 min
May 23, 8:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer, Harmon, Jackson	44 min
May 23, 8:08 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer, Jackson, Kiowa, Tillman	52 min
May 23, 8:11 PM CDT	Tornado Warning	OUN	Jackson, Kiowa, Tillman	31 min
May 23, 8:16 PM CDT	Flash Flood Warning	OUN	Greer, Harmon, Jackson	7 hr
May 23, 8:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer, Harmon, Jackson	49 min
May 23, 8:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Jackson, Tillman	50 min
May 23, 8:52 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Jackson	38 min
May 23, 8:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Jackson, Kiowa, Tillman	49 min
May 23, 9:22 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	38 min
May 23, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa	50 min
May 23, 9:38 PM CDT	Special Weather Statement	OUN	Bryan	37 min
May 23, 9:47 PM CDT	Special Weather Statement	OUN	Marshall	28 min
May 23, 9:48 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa	57 min
May 23, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan	47 min
May 23, 10:34 PM CDT	Special Weather Statement	OUN	Marshall	26 min
May 23, 10:45 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady, Stephens	45 min
May 23, 10:54 PM CDT	Special Weather Statement	OUN	Caddo, Cleveland, Grady, McClain	51 min
May 23, 10:56 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	49 min
May 23, 11:05 PM CDT	Areal Flood Advisory	OUN	Bryan, Marshall	5 hr
May 23, 11:36 PM CDT	Special Weather Statement	OUN	Garvin, Stephens	24 min
May 23, 11:41 PM CDT	Special Weather Statement	OUN	Atoka	34 min
May 23, 11:45 PM CDT	Severe Thunderstorm Warning	OUN	Garvin	45 min
May 23, 11:47 PM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	43 min
May 24, 12:14 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Carter, Garvin, Murray	46 min
May 24, 12:32 AM CDT	Flash Flood Warning	OUN	Atoka, Bryan	5 hr
May 24, 12:54 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Johnston, Murray, Pontotoc	51 min
May 24, 1:19 AM CDT	Areal Flood Advisory	OUN	Murray	3 hr
May 24, 1:30 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Coal, Johnston, Marshall, Pontotoc	45 min
May 24, 1:37 AM CDT	Areal Flood Advisory	OUN	Carter, Murray	5 hr
May 24, 2:11 AM CDT	Special Weather Statement	OUN	Atoka	34 min
May 24, 2:46 AM CDT	Special Weather Statement	OUN	Atoka, Bryan	29 min
May 24, 3:17 AM CDT	Special Weather Statement	OUN	Bryan	13 min
May 24, 10:11 AM CDT	River Flood Warning	OUN	Atoka	4 hr
May 24, 4:57 PM CDT	Special Weather Statement	OUN	Love	33 min
May 24, 5:12 PM CDT	Severe Thunderstorm Warning	OUN	Love	48 min
May 24, 5:20 PM CDT	Special Weather Statement	OUN	Murray	25 min
May 24, 5:43 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston	47 min
May 24, 5:50 PM CDT	Tornado Warning	OUN	Love	23 min
May 24, 6:00 PM CDT	Special Weather Statement	OUN	Coal	30 min
May 24, 6:19 PM CDT	Areal Flood Advisory	OUN	Love	3 hr
May 24, 6:20 PM CDT	Areal Flood Advisory	OUN	Carter, Johnston	3 hr
May 24, 6:33 PM CDT	Severe Thunderstorm Warning	OUN	Love, Marshall	42 min
May 24, 6:34 PM CDT	Special Weather Statement	OUN	Johnston	26 min
May 24, 6:35 PM CDT	Special Weather Statement	OUN	Coal	25 min
May 24, 6:50 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	40 min

Nearby

Flash Flood Warnings in Oklahoma, 2024 Every flash flood 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.