Alert archive / Oklahoma / Flash Flood Warnings in 2023

Flash Flood Warning 50, NWS Norman, OK

October 4, 2023Bryan County, Johnston County, Marshall County, Oklahoma

NWS Norman, OK issued this flash flood warning at Oct 4, 2023, 3:33 PM CDT for Bryan County, Johnston County, Marshall 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
Oct 4, 2023, 3:33 PM CDT (20:33 UTC)
Expired
Oct 4, 2023, 7:30 PM CDT
In force
4 hr
Issued by
NWS Norman, OK
Area
Storm-based polygon
Flood severity
None

Counties Bryan County, OK, Johnston County, OK, Marshall County, OK

The radar

The Norman radar (KTLX), 152 km from the middle of the area, began a volume at 20:36 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 12:00Z, 8.6 hours before the alert went out and 146 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-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2023-10-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 727 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2023-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
727 J/kg
Mixed-layer CIN
-180 J/kg
Mixed-layer LCL
1070 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 3, 9:05 PM CDTSpecial Weather StatementOUNHarper25 min
Oct 4, 12:10 AM CDTSpecial Weather StatementOUNAlfalfa35 min
Oct 4, 12:40 AM CDTSpecial Weather StatementOUNAlfalfa35 min
Oct 4, 3:20 AM CDTSpecial Weather StatementOUNWoods40 min
Oct 4, 5:00 AM CDTSpecial Weather StatementOUNKay45 min
Oct 4, 6:20 AM CDTSpecial Weather StatementOUNEllis40 min
Oct 4, 6:58 AM CDTSevere Thunderstorm WarningOUNEllis, Harper, Woodward32 min
Oct 4, 7:09 AM CDTSevere Thunderstorm WarningOUNMajor, Woods, Woodward23 min
Oct 4, 7:28 AM CDTSpecial Weather StatementOUNDewey32 min
Oct 4, 7:30 AM CDTSpecial Weather StatementOUNMajor30 min
Oct 4, 7:36 AM CDTSpecial Weather StatementOUNWoods, Woodward24 min
Oct 4, 7:48 AM CDTSpecial Weather StatementOUNMajor27 min
Oct 4, 7:56 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Major34 min
Oct 4, 7:59 AM CDTSevere Thunderstorm WarningOUNDewey, Major, Woodward25 min
Oct 4, 8:18 AM CDTSpecial Weather StatementOUNGarfield12 min
Oct 4, 8:28 AM CDTSpecial Weather StatementOUNDewey32 min
Oct 4, 8:32 AM CDTSpecial Weather StatementOUNGarfield28 min
Oct 4, 8:35 AM CDTSpecial Weather StatementOUNAlfalfa25 min
Oct 4, 8:59 AM CDTSpecial Weather StatementOUNGarfield31 min
Oct 4, 9:01 AM CDTSpecial Weather StatementOUNGrant29 min
Oct 4, 9:06 AM CDTSpecial Weather StatementOUNGrant24 min
Oct 4, 9:11 AM CDTSevere Thunderstorm WarningOUNGarfield, Grant, Kay24 min
Oct 4, 9:29 AM CDTSpecial Weather StatementOUNGrant31 min
Oct 4, 9:33 AM CDTSpecial Weather StatementOUNKay27 min
Oct 4, 9:38 AM CDTSpecial Weather StatementOUNKay37 min
Oct 4, 9:42 AM CDTSpecial Weather StatementOUNGarfield33 min
Oct 4, 9:51 AM CDTSpecial Weather StatementOUNKingfisher24 min
Oct 4, 10:06 AM CDTSpecial Weather StatementOUNKay24 min
Oct 4, 10:17 AM CDTSpecial Weather StatementOUNNoble28 min
Oct 4, 10:28 AM CDTSpecial Weather StatementOUNKay17 min
Oct 4, 10:46 AM CDTSpecial Weather StatementOUNNoble14 min
Oct 4, 1:29 PM CDTSevere Thunderstorm WarningOUNHarmon, Jackson46 min
Oct 4, 1:34 PM CDTSpecial Weather StatementOUNPottawatomie, Seminole26 min
Oct 4, 1:47 PM CDTSpecial Weather StatementOUNJohnston, Marshall28 min
Oct 4, 2:10 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNJackson, Tillman50 min
Oct 4, 2:12 PM CDTSpecial Weather StatementOUNRoger Mills33 min
Oct 4, 2:13 PM CDTSpecial Weather StatementOUNJohnston32 min
Oct 4, 2:19 PM CDTFlood WatchOUNAtoka, Bryan, Carter, Coal, Garvin, Johnston and 4 more11 hr
Oct 4, 2:21 PM CDTSpecial Weather StatementOUNSeminole24 min
Oct 4, 2:23 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNJackson, Tillman52 min
Oct 4, 2:26 PM CDTSpecial Weather StatementOUNCaddo34 min
Oct 4, 2:27 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Harmon48 min
Oct 4, 2:33 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Grady42 min
Oct 4, 2:44 PM CDTSevere Thunderstorm WarningOUNAtoka, Bryan, Johnston16 min
Oct 4, 2:59 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNComanche, Cotton, Jackson, Kiowa, Tillman46 min
Oct 4, 3:05 PM CDTSpecial Weather StatementOUNHughes25 min
Oct 4, 3:05 PM CDTSpecial Weather StatementOUNAtoka25 min
Oct 4, 3:05 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNBeckham, Greer, Kiowa, Washita40 min
Oct 4, 3:13 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNCaddo, Comanche, Grady47 min
Oct 4, 3:17 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian, Grady43 min
Oct 4, 3:21 PM CDTSevere Thunderstorm WarningOUNCotton, Tillman9 min
Oct 4, 3:23 PM CDTSevere Thunderstorm WarningOUNStephens22 min
Oct 4, 3:30 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNCotton, Tillman15 min
Oct 4, 3:32 PM CDTSpecial Weather StatementOUNAtoka43 min
Oct 4, 3:43 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNComanche, Cotton, Kiowa, Tillman47 min
Oct 4, 3:53 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNCotton, Jefferson, Stephens52 min
Oct 4, 3:56 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian, Grady, Kingfisher49 min
Oct 4, 4:04 PM CDTSpecial Weather StatementOUNCleveland26 min
Oct 4, 4:09 PM CDTSevere Thunderstorm WarningOUNCanadian, Cleveland, Grady, McClain, Oklahoma51 min
Oct 4, 4:15 PM CDTFlash Flood WarningOUNComanche, Cotton, Grady, Stephens3 hr
Oct 4, 4:17 PM CDTAreal Flood AdvisoryOUNBryan118 min
Oct 4, 4:35 PM CDTSpecial Weather StatementOUNCarter25 min
Oct 4, 4:37 PM CDTAreal Flood AdvisoryOUNComanche, Grady3 hr
Oct 4, 4:45 PM CDTAreal Flood AdvisoryOUNCarter, Cotton, Garvin, Grady, Jefferson, Murray and 1 more4 hr
Oct 4, 4:54 PM CDTSevere Thunderstorm WarningOUNCleveland, Pottawatomie21 min
Oct 4, 5:00 PM CDTFlash Flood WarningOUNCoal, Garvin, Hughes, McClain, Murray, Pontotoc and 1 more6 hr
Oct 4, 5:09 PM CDTAreal Flood AdvisoryOUNCanadian3 hr
Oct 4, 5:14 PM CDTSpecial Weather StatementOUNPottawatomie31 min
Oct 4, 5:23 PM CDTAreal Flood AdvisoryOUNCleveland, Oklahoma5 hr
Oct 4, 5:25 PM CDTAreal Flood AdvisoryOUNCarter, Garvin, Johnston, Murray, Pontotoc4 hr
Oct 4, 6:00 PM CDTFlash Flood WarningOUNCarter, Coal, Garvin, Johnston, Marshall, Murray and 1 more3 hr
Oct 4, 6:23 PM CDTSpecial Weather StatementOUNMarshall52 min
Oct 4, 6:45 PM CDTAreal Flood AdvisoryOUNCleveland, Hughes, McClain, Pontotoc, Pottawatomie, Seminole5 hr
Oct 4, 6:59 PM CDTSevere Thunderstorm WarningOUNBryan46 min
Oct 4, 1:07 PM CDTSpecial Weather StatementOUNHardeman23 min
Oct 4, 1:58 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNFoard, Hardeman32 min
Oct 4, 3:26 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman49 min
Oct 4, 3:47 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNFoard, Hardeman, Wilbarger43 min
Oct 4, 4:21 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNArcher, Baylor, Wichita, Wilbarger39 min
Oct 4, 4:25 PM CDTSpecial Weather StatementOUNWilbarger35 min

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.