Alert archive / Oklahoma / Flash Flood Warnings in 2016

Flash Flood Warning 113, NWS Norman, OK

September 24, 20164 counties in Oklahoma

NWS Norman, OK issued this flash flood warning at Sep 24, 2016, 4:37 PM CDT for 4 counties in 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
Sep 24, 2016, 4:37 PM CDT (21:37 UTC)
Expired
Sep 24, 2016, 7:30 PM CDT
In force
3 hr
Issued by
NWS Norman, OK
Area
Storm-based polygon
Flood severity
None

Counties Beckham County, OK, Custer County, OK, Roger Mills County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 120 km from the middle of the area, began a volume at 21:40 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
Sep 24, 4:54 PM CDTFLASH FLOODElk City, OKRELAYED VIA TWITTER.

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

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.6 hours before the alert went out and 188 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 2016-09-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1262 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, Norman, OK at 12:00Z on 2016-09-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 square meters per square second.193958Sfc1 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
1262 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
961 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
-8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

332 
WGUS54 KOUN 242137
FFWOUN
OKC009-039-129-149-250030-
/O.NEW.KOUN.FF.W.0113.160924T2137Z-160925T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
437 PM CDT SAT SEP 24 2016

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ROGER MILLS COUNTY IN WESTERN OKLAHOMA...
  SOUTHWESTERN CUSTER COUNTY IN WESTERN OKLAHOMA...
  NORTHWESTERN WASHITA COUNTY IN WESTERN OKLAHOMA...
  EASTERN BECKHAM COUNTY IN WESTERN OKLAHOMA...

* UNTIL 730 PM CDT
  
* AT 437 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS OCCURRING OR IS IMMINENT.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ELK CITY AND CARTER. 

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO 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.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 3553 9950 3554 9927 3512 9942 3512 9962

$$

KURTZ
2 follow-up statements
730 
WGUS74 KOUN 242157
FFSOUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
457 PM CDT SAT SEP 24 2016

OKC009-039-129-149-250030-
/O.CON.KOUN.FF.W.0113.000000T0000Z-160925T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ROGER MILLS OK-CUSTER OK-WASHITA OK-BECKHAM OK-
457 PM CDT SAT SEP 24 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
SOUTHEASTERN ROGER MILLS...SOUTHWESTERN CUSTER...NORTHWESTERN WASHITA
AND EASTERN BECKHAM COUNTIES...

AT 456 PM CDT...THE PUBLIC REPORTED FLASH FLOODING OCCURRING IN
DOWNTOWN ELK CITY. UP TO TWO AND A HALF INCHES OF RAIN HAS ALREADY
FALLEN. FLASH FLOODING IS ALREADY OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ELK CITY AND CARTER. 

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO 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.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 3553 9950 3554 9927 3512 9942 3512 9962

$$

KURTZ
209 
WGUS74 KOUN 250028
FFSOUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
728 PM CDT SAT SEP 24 2016

OKC009-039-129-149-250038-
/O.EXP.KOUN.FF.W.0113.000000T0000Z-160925T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ROGER MILLS OK-CUSTER OK-WASHITA OK-BECKHAM OK-
728 PM CDT SAT SEP 24 2016

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN ROGER MILLS...
SOUTHWESTERN CUSTER...NORTHWESTERN WASHITA AND EASTERN BECKHAM
COUNTIES WILL EXPIRE AT 730 PM CDT...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3553 9950 3554 9927 3512 9942 3512 9962

$$

KURTZ

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 24, 12:31 PM CDTSpecial Weather StatementOUNMajor29 min
Sep 24, 1:02 PM CDTSpecial Weather StatementOUNAlfalfa28 min
Sep 24, 1:09 PM CDTSpecial Weather StatementOUNRoger Mills36 min
Sep 24, 1:11 PM CDTSpecial Weather StatementOUNJackson34 min
Sep 24, 1:40 PM CDTSpecial Weather StatementOUNEllis, Roger Mills50 min
Sep 24, 1:47 PM CDTSpecial Weather StatementOUNJackson, Kiowa, Washita43 min
Sep 24, 2:12 PM CDTAreal Flood AdvisoryOUNJackson, Kiowa3 hr
Sep 24, 2:14 PM CDTSpecial Weather StatementOUNAlfalfa46 min
Sep 24, 2:31 PM CDTSpecial Weather StatementOUNWoodward44 min
Sep 24, 3:02 PM CDTAreal Flood AdvisoryOUNDewey, Ellis, Roger Mills, Woodward3 hr
Sep 24, 3:10 PM CDTSpecial Weather StatementOUNCanadian50 min
Sep 24, 3:15 PM CDTSpecial Weather StatementOUNAlfalfa30 min
Sep 24, 3:21 PM CDTSpecial Weather StatementOUNWoods, Woodward39 min
Sep 24, 3:30 PM CDTSpecial Weather StatementOUNKiowa45 min
Sep 24, 3:32 PM CDTSpecial Weather StatementOUNHarmon43 min
Sep 24, 3:40 PM CDTAreal Flood AdvisoryOUNAlfalfa, Major, Woods, Woodward3 hr
Sep 24, 3:44 PM CDTSpecial Weather StatementOUNWashita31 min
Sep 24, 3:52 PM CDTSpecial Weather StatementOUNAlfalfa, Beckham, Dewey, Roger Mills, Woods, Woodward53 min
Sep 24, 4:09 PM CDTFlash Flood WarningOUNDewey, Ellis, Roger Mills, Woodward4 hr
Sep 24, 4:13 PM CDTSpecial Weather StatementOUNKiowa47 min
Sep 24, 4:15 PM CDTSpecial Weather StatementOUNBeckham, Greer, Harmon, Jackson45 min
Sep 24, 4:35 PM CDTFlash Flood WarningOUNComanche, Greer, Jackson, Kiowa, Tillman, Washita4 hr
Sep 24, 4:48 PM CDTSpecial Weather StatementOUNAlfalfa, Custer, Dewey, Major42 min
Sep 24, 5:05 PM CDTAreal Flood AdvisoryOUNGreer, Kiowa3 hr
Sep 24, 5:21 PM CDTSpecial Weather StatementOUNKiowa, Washita39 min
Sep 24, 5:35 PM CDTSpecial Weather StatementOUNGrant25 min
Sep 24, 6:01 PM CDTSpecial Weather StatementOUNCaddo44 min
Sep 24, 6:23 PM CDTAreal Flood AdvisoryOUNAlfalfa, Garfield, Grant, Major3 hr
Sep 24, 6:49 PM CDTAreal Flood AdvisoryOUNBlaine, Caddo, Canadian, Kiowa, Washita3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2016Every flash flood warning in 2016

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.