Alert archive / Oklahoma / Flash Flood Warnings in 2023
Flash Flood Warning 14, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at May 15, 2023, 9:10 AM CDT for Seminole 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 15, 2023, 9:10 AM CDT (14:10 UTC)
- Expired
- May 15, 2023, 1:45 PM CDT
- In force
- 5 hr
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Flood severity
- None
County Seminole County, OK
The radar
The Norman radar (KTLX), 63 km from the middle of the area, began a volume at 14:12 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
Springfield, MO (KSGF), launched 12:00Z, 2.2 hours before the alert went out and 318 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.
- Mixed-layer CAPE
- 833 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 813 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
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 15, 5:45 AM CDT, 3 hours 25 minutes earlier.
Area forecast discussion, May 15, 5:45 AM CDT, 3 hours 25 minutes before
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</html>Hazardous weather outlook, May 15, 3:44 AM CDT, 5 hours 26 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 344 AM CDT Mon May 15 2023 OKZ004>048-050>052-TXZ083>090-160845- 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- 344 AM CDT Mon May 15 2023 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Today and Tonight... .Thunderstorms... Showers and thunderstorms will continue across much of Oklahoma and north Texas today before shifting east and south of the area tonight. Severe weather is not expected. .Heavy Rain... Slow-moving storms will be capable of producing very heavy rainfall, which could lead to localized flooding. A flood watch is in effect for much of central and southern Oklahoma through early this afternoon. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday... .Thunderstorms... Thunderstorms chances return late Wednesday and continue through Friday. It appears severe weather is possible Thursday and Friday. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 7:15 AM CDT | Areal Flood Advisory | OUN | Garfield | 3 hr |
| May 15, 8:27 AM CDT | Areal Flood Advisory | OUN | Seminole | 4 hr |
Nearby
Flash Flood Warnings in Oklahoma, 2023Every flash flood 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.