Flash Flood Warning 115, NWS Tulsa, OK

Issued

Aug 12, 2008, 3:07 AM CDT (08:07 UTC)

Expired

Aug 12, 2008, 7:00 AM CDT

In force

4 hr

Issued by

NWS Tulsa, OK

Area

Storm-based polygon

Flood severity

None

County Sequoyah County, OK

The Western Arkansas radar (KSRX), 45 km from the middle of the area, began a volume at 08:08 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WGUS54 KTSA 120807
FFWTSA
OKC135-121200-
/O.NEW.KTSA.FF.W.0115.080812T0807Z-080812T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
307 AM CDT TUE AUG 12 2008

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL AND EASTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 700 AM CDT

* AT 248 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
  AREA OF HEAVY RAIN OVER SEQUOYAH COUNTY. STORMS PRODUCING THE 
HEAVY HAVE BEEN MOVING ACROSS THE SAME AREA SINCE BEFORE MIDNIGHT. 
RADAR INDICATES THAT 2 TO 3 INCHES OF RAIN HAS ALREADY FALLEN. 
ANOTHER INCH INCH WILL BE POSSIBLE THROUGH 500 AM CDT. THE HEAVIEST 
RAIN HAS FALLEN NEAR BRUSHY AND TOWARD MARBLE CITY. 

* LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN   
INCLUDE...BRUSHY...MARBLE CITY...AND SALLISAW. BRUSHY CREEK AND ROSS 
BRANCH WILL BE AFFECTED BY THIS RAIN. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO
UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY
MOST SPORT UTILITY VEHICLES AND PICKUPS. 

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLASH FLOODS. IT IS VERY DIFFICULT AT NIGHT TO TELL HOW 
MUCH WATER IS ON THE ROADS. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR IS
OCCURRING. RESIDENTS LIVING ALONG STREAMS...CREEKS AND DRAINAGE
DITCHES SHOULD BE READY TO TAKE IMMEDIATE ACTION IF FLOODING IS
OBSERVED. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATER BY FOOT OR BY
AUTO...YOU MAY BE SWEPT AWAY BY THE STRONG CURRENT. 

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN TULSA.

LAT...LON 3564 9487 3564 9447 3538 9463 3546 9490

$$

NWS Tulsa, OK wrote its last area forecast discussion before this flash flood warning went out at Aug 12, 12:27 AM CDT, 2 hours 40 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1227 AM CDT TUE AUG 12 2008

.DISCUSSION...

.AVIATION...
PERSISTENT CONVECTIVE LOW CLOUD DECK WILL CONTINUE OVERNIGHT WITH MUCH
LOWER CEILINGS AND VISIBILITIES HAVING DEVELOPED ALONG THE FRINGES
OF THE EARLY EVENING CLOUD COVER. GENERAL TREND THROUGH THE OVERNIGHT
HOURS IS FOR MVFR CONDITIONS NORTH DECREASING TO IFR CONDITIONS
SOUTH...WITH TEMPO GROUPS FOR BOTH CONVECTIVE ELEMENTS AND
POTENTIAL FOR LOCALLY LOWER FLIGHT CATEGORIES AS TEMP DEWPOINT
SPREADS NARROW. TREND AFTER SUNRISE WILL BE FOR CEILINGS TO RISE AND
EVENTUAL DISSIPATE BY LATE AFTERNOON. FOG POTENTIAL WILL LIKELY
INCREASE FOR TOMORROW NIGHT.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH UNTIL 7 AM TUESDAY FOR OKZ049-OKZ053-OKZ065-
     OKZ066-OKZ070-OKZ071-OKZ072-OKZ073-OKZ074-OKZ075-OKZ076.

AR...FLASH FLOOD WATCH UNTIL 7 AM TUESDAY FOR ARZ019-ARZ020-ARZ029.

&&

SHORT TERM...07
LONG TERM....02
AVIATION...07

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
850 PM CDT MON AUG 11 2008

ARZ001-002-010-011-019-020-029-OKZ049-053>076-121000-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
850 PM CDT MON AUG 11 2008

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...TONIGHT.

FLASH FLOOD.
	RISK...ELEVATED.
	AREA...SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...EXTREME SOUTHEAST OKLAHOMA.

HEAVY RAIN.
	RISK...ELEVATED.
	AREA...SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...EXTREME SOUTHEAST OKLAHOMA.

THUNDERSTORMS WITH DANGEROUS LIGHTNING.
	RISK...SIGNIFICANT.
	AREA...SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS.
	ONSET...ONGOING .

	AREA AT GREATEST RISK...SOUTHEAST OKLAHOMA.

DISCUSSION...
SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS PORTIONS OF SOUTHEAST
OKLAHOMA OVERNIGHT AS AN UPPER LOW MOVES ACROSS THE REGION.
THUNDERSTORM ACTIVITY IS MOVING SLOWLY AND TENDING TO TRAIN OVER
THE SAME GENERAL AREAS. THIS WILL CONTINUE TO CREATE THE RISK OF
FLASH FLOODING TO AREAS SOUTH OF INTERSTATE 40.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION NOT EXPECTED.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...NO HAZARDS.
THURSDAY...THUNDERSTORM POTENTIAL.
FRIDAY...THUNDERSTORM POTENTIAL.
SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
WITH A SURFACE FRONT LINGERING IN THE VICINITY AND AN UPPER LEVEL SYSTEM
MOVING SOUTHEAST INTO THE AREA... THUNDERSTORMS WILL REMAIN IN THE
FORECAST FOR TUESDAY. THERE SHOULD BE A BREAK IN THE RAIN CHANCES
WEDNESDAY AND MUCH OF THE DAY THURSDAY AS THE FRONT GETS PUSHED
SOUTH AND THE ATMOSPHERE DRIES OUT. THE NEXT CHANCE OF
THUNDERSTORMS WILL BE THURSDAY NIGHT AND FRIDAY AS A SIGNIFICANT
COLD FRONT MOVES INTO THE AREA.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL TABULAR AND GRAPHICAL
INFORMATION.

Flash Flood Warnings in Oklahoma, 2008Every flash flood warning in 2008

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.