Alert archive / Oklahoma / Flash Flood Warnings in 2024

Flash Flood Warning 38, NWS Norman, OK

May 20, 2024Noble County, Payne County, Oklahoma

NWS Norman, OK issued this flash flood warning at May 20, 2024, 2:07 AM CDT for Noble County, Payne County, Oklahoma. It was in force for 4 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 20, 2024, 2:07 AM CDT (07:07 UTC)
Expired: May 20, 2024, 6:30 AM CDT
In force: 4 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Noble County, OK, Payne County, OK

The radar

The Norman radar (KTLX), 101 km from the middle of the area, began a volume at 07:12 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, 7.1 hours before the alert went out and 116 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: 2750 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1280 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 317 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 12.5

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 20, 12:18 AM CDT, 1 hour 49 minutes earlier.

Area forecast discussion, May 20, 12:18 AM CDT, 1 hour 49 minutes before

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Hazardous weather outlook, May 19, 2:59 PM CDT, 11 hours 8 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
259 PM CDT Sun May 19 2024

OKZ004>048-050>052-TXZ083>090-202000-
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-
259 PM CDT Sun May 19 2024

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

.DAY ONE...Through Tonight...

.Thunderstorms...
Severe thunderstorms will be possible late this afternoon and
evening across northern and western Oklahoma, possibly spreading
into central portions of Oklahoma late in the evening. Initially,
very large hail and damaging winds will be the main concerns
across western and northern Oklahoma, with the concern of mainly
damaging winds later in the evening across north central and
central Oklahoma.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel across
northern, western, and central Oklahoma should be prepared for
severe weather operations from late this afternoon through
midnight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

.Thunderstorms...
Thunderstorm potential returns Tuesday, with severe weather
possible across all but northwest Oklahoma. Episodes of severe
weather will continue Wednesday into next weekend.

.Flooding...
The potential for flooding rainfall will increase Wednesday and
Thursday, mainly across southeast Oklahoma.

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 19, 11:51 PM CDT, 2 hours 16 minutes before

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Local storm report, May 19, 11:54 PM CDT, 2 hours 13 minutes before

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Local storm report, May 19, 11:59 PM CDT, 2 hours 8 minutes before

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Local storm report, May 20, 12:25 AM CDT, 1 hour 42 minutes before

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Local storm report, May 20, 12:27 AM CDT, 1 hour 40 minutes before

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Special weather statement, May 20, 1:52 AM CDT, 15 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 19, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	28 min
May 19, 7:14 PM CDT	Tornado Warning	OUN	Custer	46 min
May 19, 7:20 PM CDT	Areal Flood Advisory	OUN	Custer, Dewey, Roger Mills	3 hr
May 19, 7:28 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Custer, Washita	32 min
May 19, 7:33 PM CDT	Tornado Warning	OUN	Blaine, Caddo, Custer	42 min
May 19, 7:39 PM CDT	Tornado Warning EmergencyTornado observedCatastrophic damage threat	OUN	Custer	32 min
May 19, 7:59 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	46 min
May 19, 8:05 PM CDT	Areal Flood Advisory	OUN	Custer, Dewey	3 hr
May 19, 8:12 PM CDT	Tornado Warning	OUN	Blaine, Caddo, Custer	48 min
May 19, 8:13 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Blaine, Caddo, Custer	47 min
May 19, 8:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Blaine, Canadian, Kingfisher	50 min
May 19, 8:43 PM CDT	Tornado Warning	OUN	Blaine, Caddo, Canadian	47 min
May 19, 8:53 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woods, Woodward	52 min
May 19, 9:09 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	51 min
May 19, 9:12 PM CDT	Tornado Warning	OUN	Canadian, Grady	48 min
May 19, 9:36 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	39 min
May 19, 9:44 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	46 min
May 19, 9:46 PM CDT	Areal Flood Advisory	OUN	Canadian	3 hr
May 19, 9:56 PM CDT	Tornado Warning	OUN	Canadian, Cleveland, McClain, Oklahoma	38 min
May 19, 10:07 PM CDT	Areal Flood Advisory	OUN	Oklahoma	3 hr
May 19, 10:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Harper, Woods, Woodward	45 min
May 19, 10:16 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Major	44 min
May 19, 10:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, Oklahoma	51 min
May 19, 10:29 PM CDT	Flash Flood Warning	OUN	Canadian, Oklahoma	5 hr
May 19, 10:34 PM CDT	Areal Flood Advisory	OUN	Harper, Woods, Woodward	3 hr
May 19, 10:48 PM CDT	Tornado Warning	OUN	Woods, Woodward	42 min
May 19, 11:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Garfield	45 min
May 19, 11:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Woods	28 min
May 19, 11:24 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Alfalfa, Woods	51 min
May 19, 11:35 PM CDT	Areal Flood Advisory	OUN	Woods	3 hr
May 20, 12:06 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant, Woods	39 min
May 20, 12:39 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Alfalfa, Garfield, Grant	51 min
May 20, 12:48 AM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	42 min
May 20, 1:11 AM CDT	Areal Flood Advisory	OUN	Alfalfa, Garfield, Grant, Kay, Major, Noble and 1 more	4 hr
May 20, 1:29 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Noble, Payne	31 min
May 20, 1:38 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Logan, Noble, Payne	37 min
May 20, 1:52 AM CDT	Special Weather Statement	OUN	Garfield	23 min
May 20, 2:00 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan	45 min
May 20, 2:09 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Noble, Payne	51 min
May 20, 2:37 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Lincoln, Logan, Noble, Payne	40 min
May 20, 2:46 AM CDT	Areal Flood Advisory	OUN	Garfield, Lincoln, Logan, Noble, Payne	4 hr
May 20, 2:53 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	52 min
May 20, 4:29 AM CDT	Special Weather Statement	OUN	Payne	16 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.