Alert archive / Oklahoma / Flash Flood Warnings in 2023

Flash Flood Warning 21, NWS Norman, OK

June 3, 2023Johnston County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 3, 2023, 3:10 PM CDT for Johnston County, Oklahoma. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 3, 2023, 3:10 PM CDT (20:10 UTC)
Expired: Jun 3, 2023, 6:15 PM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

County Johnston County, OK

The radar

The Norman radar (KTLX), 124 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 120 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: 38 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

168 
WGUS54 KOUN 032010
FFWOUN
OKC069-032315-
/O.NEW.KOUN.FF.W.0021.230603T2010Z-230603T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Norman OK
310 PM CDT Sat Jun 3 2023

The National Weather Service in Norman has issued a

* Flash Flood Warning for...
  Central Johnston County in southeastern Oklahoma...

* Until 615 PM CDT.

* At 310 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Connerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 3442 9651 3428 9651 3428 9670 3444 9669
      3447 9651

FLASH FLOOD...RADAR INDICATED

$$

MDU

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 7:00 PM CDT	Special Weather Statement	OUN	Woods	45 min
Jun 2, 7:02 PM CDT	Special Weather Statement	OUN	Custer, Greer, Kiowa, Washita	28 min
Jun 2, 7:24 PM CDT	Areal Flood Advisory	OUN	Custer, Washita	6 hr
Jun 2, 7:33 PM CDT	Special Weather Statement	OUN	Custer, Kiowa, Washita	27 min
Jun 2, 7:49 PM CDT	Flash Flood Warning	OUN	Custer, Washita	3 hr
Jun 2, 8:04 PM CDT	Special Weather Statement	OUN	Custer, Dewey, Jackson, Kiowa, Washita	26 min
Jun 2, 8:14 PM CDT	Areal Flood Advisory	OUN	Blaine, Caddo, Comanche, Custer, Dewey, Kiowa and 1 more	6 hr
Jun 2, 8:23 PM CDT	River Flood Advisory	OUN	Kingfisher, Logan	24 hr
Jun 2, 8:23 PM CDT	River Flood Advisory	OUN	Major, Woods, Woodward	36 hr
Jun 2, 8:25 PM CDT	River Flood Advisory	OUN	Greer, Jackson	20 hr
Jun 2, 8:32 PM CDT	Special Weather Statement	OUN	Blaine, Kiowa	43 min
Jun 2, 9:13 PM CDT	Areal Flood Advisory	OUN	Blaine, Caddo, Canadian, Comanche, Grady, Kingfisher	4 hr
Jun 2, 9:40 PM CDT	Special Weather Statement	OUN	Cotton	35 min
Jun 2, 10:22 PM CDT	Special Weather Statement	OUN	Jefferson	23 min
Jun 2, 10:27 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	16 min
Jun 2, 11:25 PM CDT	Special Weather Statement	OUN	Love, Stephens	35 min
Jun 2, 11:31 PM CDT	Areal Flood Advisory	OUN	Comanche	3 hr
Jun 3, 12:06 AM CDT	Special Weather Statement	OUN	Carter, Love, Murray	24 min
Jun 3, 12:28 AM CDT	River Flood Advisory	OUN	Blaine, Caddo, Canadian, Custer	20 hr
Jun 3, 1:51 AM CDT	Special Weather Statement	OUN	Bryan	24 min
Jun 3, 3:22 AM CDT	River Flood Warning	OUN	Custer, Washita	35 hr
Jun 3, 8:38 AM CDT	River Flood Advisory	OUN	Blaine, Canadian	7 hr
Jun 3, 1:34 PM CDT	Special Weather Statement	OUN	Pontotoc	26 min
Jun 3, 1:45 PM CDT	Severe Thunderstorm Warning	OUN	Pontotoc	45 min
Jun 3, 1:55 PM CDT	Special Weather Statement	OUN	Marshall	35 min
Jun 3, 1:56 PM CDT	Areal Flood Advisory	OUN	Pontotoc	3 hr
Jun 3, 1:57 PM CDT	Special Weather Statement	OUN	Murray	33 min
Jun 3, 2:15 PM CDT	Special Weather Statement	OUN	Carter	30 min
Jun 3, 2:25 PM CDT	Areal Flood Advisory	OUN	Marshall	3 hr
Jun 3, 2:30 PM CDT	Special Weather Statement	OUN	Johnston	30 min
Jun 3, 2:37 PM CDT	Areal Flood Advisory	OUN	Carter, Johnston, Murray, Pontotoc	3 hr
Jun 3, 2:55 PM CDT	Special Weather Statement	OUN	Atoka, Coal, Johnston, Marshall	35 min
Jun 3, 3:18 PM CDT	Severe Thunderstorm Warning	OUN	Atoka	27 min
Jun 3, 3:39 PM CDT	Special Weather Statement	OUN	Bryan, Coal	36 min
Jun 3, 3:48 PM CDT	Areal Flood Advisory	OUN	Coal	3 hr
Jun 3, 3:56 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	19 min
Jun 3, 4:02 PM CDT	River Flood Warning	OUN	Blaine, Canadian	4 hr
Jun 3, 4:04 PM CDT	River Flood Advisory	OUN	Jackson, Kiowa, Tillman	28 hr
Jun 3, 4:09 PM CDT	Areal Flood Advisory	OUN	Atoka	3 hr
Jun 3, 4:15 PM CDT	Special Weather Statement	OUN	Atoka, Bryan	45 min
Jun 3, 4:44 PM CDT	Areal Flood Advisory	OUN	Atoka, Coal, Hughes	3 hr
Jun 3, 4:47 PM CDT	Areal Flood Advisory	OUN	Bryan	3 hr
Jun 3, 4:52 PM CDT	Flash Flood Warning	OUN	Atoka	3 hr
Jun 3, 4:55 PM CDT	Special Weather Statement	OUN	Atoka	35 min
Jun 3, 6:33 PM CDT	River Flood Advisory	OUN	Greer, Jackson	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2023 Every 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.