Alert archive / Oklahoma / Flash Flood Warnings in 2011

Flash Flood Warning 3, NWS Norman, OK

May 23, 2011Alfalfa County, Garfield County, Major County, Oklahoma

NWS Norman, OK issued this flash flood warning at May 23, 2011, 6:07 PM CDT for Alfalfa County, Garfield County, Major 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
May 23, 2011, 6:07 PM CDT (23:07 UTC)
Expired
May 23, 2011, 9:00 PM CDT
In force
3 hr
Issued by
NWS Norman, OK
Area
Storm-based polygon
Flood severity
None

Counties Alfalfa County, OK, Garfield County, OK, Major County, OK

The radar

The Vance AFB radar (KVNX), 45 km from the middle of the area, began a volume at 23:07 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
May 23, 6:40 PM CDTFLASH FLOODLahoma, OKWATER OVERFLOWED THE STREETS AROUND TOWN

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

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 11.1 hours before the alert went out and 45 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, Lamont, OK at 12:00Z on 2011-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1801 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, Lamont, OK at 12:00Z on 2011-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 370 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
1801 J/kg
Mixed-layer CIN
-359 J/kg
Mixed-layer LCL
842 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
370 m²/s²
0-3 km storm-relative helicity
390 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

439 
WGUS54 KOUN 232307
FFWOUN
OKC003-047-093-240200-
/O.NEW.KOUN.FF.W.0003.110523T2307Z-110524T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
607 PM CDT MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GARFIELD COUNTY IN NORTHERN OKLAHOMA...
  SOUTHEASTERN ALFALFA COUNTY IN NORTHWEST OKLAHOMA...
  NORTHEASTERN MAJOR COUNTY IN NORTHWEST OKLAHOMA...

* UNTIL 900 PM CDT

* AT 606 PM CDT...VERY HEAVY RAIN WAS FALLING FROM THUNDERSTORMS   
  OVER NORTH-CENTRAL OKLAHOMA. EMERGENCY MANAGEMENT REPORTED
  SIGNIFICANT FLOODING IN ENID.

* LOCATIONS IN THE WARNING INCLUDE BISON...BRECKENRIDGE...CARRIER...
  COVINGTON...DOUGLAS...DRUMMOND...ENID...FAIRMONT...GARBER...
  GOLTRY...LAHOMA...MENO...NORTH ENID...RINGWOOD...VANCE AIR FORCE
  BASE AND WAUKOMIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARM LANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
AS LITTLE AS 6 INCHES OF WATER MAY CAUSE YOU TO LOSE CONTROL OF YOUR
VEHICLE. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES
INCLUDING SPORT UTILITY VEHICLES AND PICKUP TRUCKS. MOVE TO HIGHER
GROUND.

&&

LAT...LON 3645 9749 3627 9754 3616 9776 3634 9839
      3649 9838 3655 9815

$$


CMS

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 7:00 PM CDTSpecial Weather StatementOUNCarter30 min
May 22, 7:09 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Jefferson, Love, Murray, Stephens51 min
May 22, 7:14 PM CDTSpecial Weather StatementOUNSeminole31 min
May 22, 7:54 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Johnston, Murray, Pontotoc, Seminole51 min
May 22, 7:56 PM CDTSpecial Weather StatementOUNHughes19 min
May 22, 8:40 PM CDTSevere Thunderstorm WarningOUNHughes, Pontotoc, Seminole50 min
May 22, 8:58 PM CDTSpecial Weather StatementOUNAtoka47 min
May 22, 9:31 PM CDTSpecial Weather StatementOUNHughes14 min
May 23, 9:01 AM CDTSpecial Weather StatementOUNBryan29 min
May 23, 9:30 AM CDTSpecial Weather StatementOUNBryan15 min
May 23, 1:17 PM CDTSpecial Weather StatementOUNBryan13 min
May 23, 3:13 PM CDTSpecial Weather StatementOUNCuster, Washita32 min
May 23, 3:36 PM CDTFire Weather WatchOUNBeckham, Ellis, Harper, Roger Mills13 hr
May 23, 3:40 PM CDTSpecial Weather StatementOUNBlaine, Washita35 min
May 23, 3:45 PM CDTSevere Thunderstorm WarningOUNBlaine, Kingfisher, Major60 min
May 23, 4:04 PM CDTSevere Thunderstorm WarningOUNBlaine, Dewey41 min
May 23, 4:07 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Major53 min
May 23, 4:21 PM CDTSpecial Weather StatementOUNWashita24 min
May 23, 4:26 PM CDTTornado WarningOUNBlaine, Kingfisher, Major39 min
May 23, 4:31 PM CDTSevere Thunderstorm WarningOUNKiowa, Washita59 min
May 23, 4:32 PM CDTSpecial Weather StatementOUNKay13 min
May 23, 4:34 PM CDTSevere Thunderstorm WarningOUNGrant, Kay56 min
May 23, 4:43 PM CDTSpecial Weather StatementOUNJackson17 min
May 23, 4:45 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Blaine, Garfield, Grant, Kingfisher, Major60 min
May 23, 4:53 PM CDTSpecial Weather StatementOUNJackson22 min
May 23, 5:04 PM CDTSpecial Weather StatementOUNLogan, Noble, Payne26 min
May 23, 5:12 PM CDTSevere Thunderstorm WarningOUNTillman48 min
May 23, 5:21 PM CDTSevere Thunderstorm WarningOUNCaddo, Kiowa, Washita54 min
May 23, 5:40 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Kiowa65 min
May 23, 5:41 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant, Kay, Major, Noble64 min
May 23, 5:44 PM CDTSevere Thunderstorm WarningOUNBlaine, Canadian, Kingfisher46 min
May 23, 6:00 PM CDTSevere Thunderstorm WarningOUNComanche, Tillman45 min
May 23, 6:13 PM CDTSevere Thunderstorm WarningOUNKingfisher, Logan62 min
May 23, 6:16 PM CDTSpecial Weather StatementOUNOklahoma44 min
May 23, 6:17 PM CDTSevere Thunderstorm WarningOUNCaddo, Kiowa28 min
May 23, 6:27 PM CDTSevere Thunderstorm WarningOUNCanadian, Kingfisher63 min
May 23, 6:36 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton54 min
May 23, 6:40 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Kiowa49 min
May 23, 6:43 PM CDTSevere Thunderstorm WarningOUNGarfield, Major, Noble, Payne62 min

Nearby

Flash Flood Warnings in Oklahoma, 2011Every flash flood warning in 2011

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.