Alert archive / Oklahoma / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Norman, OK

June 6, 2021Oklahoma County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 6, 2021, 4:32 PM CDT for Oklahoma County, Oklahoma. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 6, 2021, 4:32 PM CDT (21:32 UTC)
Expired
Jun 6, 2021, 7:37 PM CDT
In force
3 hr
Issued by
NWS Norman, OK
Area
Storm-based polygon
Flood severity
None

County Oklahoma County, OK

The radar

The Norman radar (KTLX), 20 km from the middle of the area, began a volume at 21:35 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.

What was reported inside it

TimeReportWhereRemark
Jun 6, 4:52 PM CDTFLASH FLOODDel City, OKSTRANDED MOTORIST 3500 BLOCK OF SE 27TH IN AREA OF CHERRY CREEK BRIDGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.5 hours before the alert went out and 291 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, Fort Worth, TX at 12:00Z on 2021-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 644 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2021-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939Sfc1 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
644 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

816 
WGUS54 KOUN 062132
FFWOUN
OKC109-070045-
/O.NEW.KOUN.FF.W.0026.210606T2132Z-210607T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Norman OK
432 PM CDT Sun Jun 6 2021

The National Weather Service in Norman has issued a

* Flash Flood Warning for...
  South Central Oklahoma County in central Oklahoma...

* Until 745 PM CDT.

* At 432 PM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  1 and 2 inches of rain have fallen. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar and automated gauges.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Southeastern Oklahoma City, Midwest City, Del City, Valley Brook 
  and Smith Village.

This includes the following highways...
	Interstate 35 between mile markers 128 and 130.
	Interstate 40 between mile markers 154 and 156.

Additional rainfall amounts of 1 to 1.5 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Please report flooding to your local law enforcement agency when you 
can do so safely.

&&

LAT...LON 3550 9742 3549 9747 3542 9748 3540 9749
      3540 9746 3540 9744 3547 9741

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...1.25-1.75 INCHES IN 1 HOUR 

$$

03
2 follow-up statements
556 
WGUS74 KOUN 062220
FFSOUN

Flash Flood Statement
National Weather Service Norman OK
520 PM CDT Sun Jun 6 2021

OKC109-070045-
/O.CON.KOUN.FF.W.0026.000000T0000Z-210607T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Oklahoma OK-
520 PM CDT Sun Jun 6 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CDT THIS 
EVENING FOR SOUTH CENTRAL OKLAHOMA COUNTY...

At 520 PM CDT, the Del City Fire Department reported a motorist 
stranded at the 3500 block of Southeast 27th in the area of Cherry 
Creek Bridge. Between 2 and 2.5 inches of rain have fallen. Flash 
flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Fire department/rescue.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
Southeastern Oklahoma City, Midwest City, Del City, Valley Brook and 
Smith Village.

This includes the following streams and drainages...
  Crooked Oak Creek and North Canadian River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Please report flooding to your local law enforcement agency when you 
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 3550 9742 3549 9747 3542 9748 3540 9749
      3540 9746 3540 9744 3547 9741

FLASH FLOOD...OBSERVED

$$

03
485 
WGUS74 KOUN 070037
FFSOUN

Flash Flood Statement
National Weather Service Norman OK
737 PM CDT Sun Jun 6 2021

OKC109-070047-
/O.CAN.KOUN.FF.W.0026.000000T0000Z-210607T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Oklahoma OK-
737 PM CDT Sun Jun 6 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL OKLAHOMA 
COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 3550 9742 3549 9747 3542 9748 3540 9749
      3540 9746 3540 9744 3547 9741

$$

03

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 1:46 PM CDTSpecial Weather StatementOUNCaddo44 min
Jun 6, 2:49 PM CDTSpecial Weather StatementOUNCaddo26 min
Jun 6, 3:13 PM CDTSpecial Weather StatementOUNCleveland47 min
Jun 6, 3:14 PM CDTSpecial Weather StatementOUNMajor31 min
Jun 6, 3:19 PM CDTSpecial Weather StatementOUNBlaine41 min
Jun 6, 3:20 PM CDTSpecial Weather StatementOUNPottawatomie25 min
Jun 6, 3:31 PM CDTSevere Thunderstorm WarningOUNBlaine, Major29 min
Jun 6, 3:39 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Canadian51 min
Jun 6, 3:45 PM CDTSpecial Weather StatementOUNOklahoma45 min
Jun 6, 3:55 PM CDTSevere Thunderstorm WarningOUNBlaine, Garfield, Kingfisher, Major50 min
Jun 6, 3:57 PM CDTSpecial Weather StatementOUNBlaine48 min
Jun 6, 3:59 PM CDTSpecial Weather StatementOUNCanadian31 min
Jun 6, 4:05 PM CDTAreal Flood AdvisoryOUNBlaine3 hr
Jun 6, 4:08 PM CDTSevere Thunderstorm WarningOUNCanadian, Kingfisher35 min
Jun 6, 4:12 PM CDTSpecial Weather StatementOUNPontotoc48 min
Jun 6, 4:14 PM CDTSpecial Weather StatementOUNCarter, Murray61 min
Jun 6, 4:19 PM CDTAreal Flood AdvisoryOUNOklahoma3 hr
Jun 6, 4:37 PM CDTSpecial Weather StatementOUNKingfisher38 min
Jun 6, 4:38 PM CDTSpecial Weather StatementOUNMarshall37 min
Jun 6, 4:41 PM CDTAreal Flood AdvisoryOUNCarter, Love, Murray3 hr
Jun 6, 5:14 PM CDTSpecial Weather StatementOUNKingfisher31 min
Jun 6, 5:14 PM CDTSpecial Weather StatementOUNJohnston31 min
Jun 6, 5:15 PM CDTSpecial Weather StatementOUNOklahoma45 min
Jun 6, 5:27 PM CDTSpecial Weather StatementOUNJohnston63 min
Jun 6, 5:38 PM CDTSpecial Weather StatementOUNCoal67 min
Jun 6, 5:45 PM CDTSpecial Weather StatementOUNLincoln30 min
Jun 6, 5:48 PM CDTSpecial Weather StatementOUNLincoln57 min
Jun 6, 5:55 PM CDTAreal Flood AdvisoryOUNAtoka, Bryan, Coal, Johnston, Marshall3 hr
Jun 6, 6:13 PM CDTFlash Flood WarningOUNAtoka, Johnston3 hr
Jun 6, 6:29 PM CDTSpecial Weather StatementOUNAtoka61 min

Nearby

Flash Flood Warnings in Oklahoma, 2021Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.