Alert archive / Oklahoma / Flash Flood Warnings in 2011

Flash Flood Warning 9, NWS Tulsa, OK

April 24, 201110 counties in Oklahoma

NWS Tulsa, OK issued this flash flood warning at Apr 24, 2011, 3:18 PM CDT for 10 counties in Oklahoma. It was in force for 6 hr. 8 reports 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: Apr 24, 2011, 3:18 PM CDT (20:18 UTC)
Expired: Apr 24, 2011, 9:00 PM CDT
In force: 6 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Adair County, OK, Cherokee County, OK, Creek County, OK, Delaware County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 54 km from the middle of the area, began a volume at 20:21 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

Time	Report	Where	Remark
Apr 24, 4:00 PM CDT	FLASH FLOOD	Beggs, OK	SEVERAL CARS STRANDED IN HIGH WATER
Apr 24, 4:00 PM CDT	FLASH FLOOD	Haskell, OK	COUNTY ROADS FLOODED AND IMPASSABLE AROUND HASKELL
Apr 24, 4:00 PM CDT	FLASH FLOOD	Morris, OK	1 TO 2 FEET OF WATER REPORTED OVER MOST ROADWAYS IN AND NEAR MORRIS
Apr 24, 4:00 PM CDT	FLASH FLOOD	Westville, OK	SEVERAL WATER RESCUES UNDERWAY DUE TO HIGH WATER NEAR WESTVILLE AND WATTS
Apr 24, 6:16 PM CDT	FLASH FLOOD	Checotah, OK	CHECOTAH MIDDLE SCHOOL BUILDINGS BEING FLOODED.
Apr 24, 6:16 PM CDT	FLASH FLOOD	Proctor, OK	BARON FORK CREEK OUT OF ITS BANKS AND FLOODING HIGHWAY 62.
Apr 24, 7:19 PM CDT	FLASH FLOOD	Tahlequah, OK	NUMEROUS WATER RESCUES...CARS STRANDED. WATER OVER STATE HIGHWAY 82 NEAR MOODYS CORNER.
Apr 24, 7:50 PM CDT	FLASH FLOOD	Eufaula, OK	WATER OVER THE ROAD REPORTED NEAR PARADISE POINT

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, 8.3 hours before the alert went out and 155 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 494 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 504 m²/s²
0-3 km storm-relative helicity: 705 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 14.8

Open this sounding in Storm Lab

The text

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

104 
WGUS54 KTSA 242018
FFWTSA
OKC001-021-037-041-091-101-107-111-135-145-250200-
/O.NEW.KTSA.FF.W.0009.110424T2018Z-110425T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
318 PM CDT SUN APR 24 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAIR COUNTY IN NORTHEAST OKLAHOMA...
  CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA...
  MCINTOSH COUNTY IN SOUTHEAST OKLAHOMA...
  MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA...
  NORTHWESTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA...
  OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA...
  OKMULGEE COUNTY IN NORTHEAST OKLAHOMA...
  SOUTHERN CREEK COUNTY IN NORTHEAST OKLAHOMA...
  SOUTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA...
  SOUTHERN WAGONER COUNTY IN NORTHEAST OKLAHOMA...

* UNTIL 900 PM CDT

* AT 309 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH VERY HEAVY RAIN FROM CREEK COUNTY THROUGH 
MUSKOGEE COUNTY AND THEN NORTHEAST TO ADAIR AND DELAWARE COUNTIES. 
RADAR INDICATES THAT THREE TO FIVE INCHES OF RAIN WILL BE 
POSSIBLE THROUGH THE AFTERNOON...AS THUNDERSTORMS CONTINUE TO 
DEVELOP AND MOVE ACROSS THE AREA. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL IS EXPECTED TO CAUSE FLASH 
FLOODING. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE...  
BRISTOW...EUFAULA...MUSKOGEE...OKEMAH...OKMULGEE...STILWELL...  
TAHLEQUAH...WAGONER...BUNCH...CHECOTAH...OLCORD...ELDON...FORT 
GIBSON...GORE AND HANNA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. TAKE A DIFFERENT ROUTE.

LOW WATER CROSSINGS IN HILLY TERRAIN ARE ESPECIALLY DANGEROUS IN 
HEAVY RAIN. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

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

&&

LAT...LON 3583 9662 3587 9603 3586 9583 3588 9582
      3609 9522 3608 9512 3613 9511 3617 9502
      3620 9502 3649 9462 3567 9449 3532 9542
      3517 9598 3529 9599 3529 9643 3546 9645
      3542 9649 3544 9656 3538 9654 3540 9662

$$

2 follow-up statements

427 
WGUS74 KTSA 242255
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
555 PM CDT SUN APR 24 2011

OKC001-021-037-041-091-101-107-111-135-145-250200-
/O.CON.KTSA.FF.W.0009.000000T0000Z-110425T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OKMULGEE OK-MUSKOGEE OK-WAGONER OK-DELAWARE OK-ADAIR OK-CREEK OK-
CHEROKEE OK-OKFUSKEE OK-SEQUOYAH OK-MCINTOSH OK-
555 PM CDT SUN APR 24 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MCINTOSH...NORTHWESTERN
SEQUOYAH...OKFUSKEE...CHEROKEE...SOUTHERN CREEK...ADAIR...SOUTHERN
DELAWARE...SOUTHERN WAGONER...MUSKOGEE AND OKMULGEE COUNTIES UNTIL
900 PM CDT...

AT 555 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA. WIDESPREAD
2 TO 4 INCHES OF RAINFALL HAS ALREADY OCCURRED OVER THE PAST 2 
DAYS...WITH AN ADDITIONAL 1 TO 2 INCHES POSSIBLE THROUGH 9 PM. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
BRISTOW...EUFAULA...MUSKOGEE...OKEMAH...OKMULGEE...STILWELL...
TAHLEQUAH...WAGONER...BALD HILL...BARON...BEARDEN...BEGGS...BOLEY...
BOYNTON...BRAGGS...BUNCH...CASTLE...CHECOTAH...CHRISTIE...
CLEARVIEW...COLCORD...COOKSON...COUNCIL HILL...DEPEW...DEWAR...
ELDON...FORT GIBSON...GORE...GRAYSON AND HANNA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. TAKE A DIFFERENT ROUTE TO
REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

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

&&

LAT...LON 3583 9662 3587 9603 3586 9583 3588 9582
      3609 9522 3608 9512 3613 9511 3617 9502
      3620 9502 3649 9462 3567 9449 3532 9542
      3517 9598 3529 9599 3529 9643 3546 9645
      3542 9649 3544 9656 3538 9654 3540 9662

$$

977 
WGUS74 KTSA 250007
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
707 PM CDT SUN APR 24 2011

OKC001-021-037-041-091-101-107-111-135-145-250200-
/O.CON.KTSA.FF.W.0009.000000T0000Z-110425T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OKMULGEE OK-MUSKOGEE OK-WAGONER OK-DELAWARE OK-ADAIR OK-CREEK OK-
CHEROKEE OK-OKFUSKEE OK-SEQUOYAH OK-MCINTOSH OK-
707 PM CDT SUN APR 24 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MCINTOSH...NORTHWESTERN
SEQUOYAH...OKFUSKEE...CHEROKEE...SOUTHERN CREEK...ADAIR...SOUTHERN
DELAWARE...SOUTHERN WAGONER...MUSKOGEE AND OKMULGEE COUNTIES UNTIL
900 PM CDT...

AT 705 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA. WIDESPREAD
2 TO 4 INCHES OF RAINFALL HAS ALREADY OCCURRED WITH AN ADDITIONAL 1 
TO 2 INCHES POSSIBLE. LIFE THREATENING FLOODING HAS BEEN REPORTED IN
PARTS OF ADAIR COUNTY...MAINLY IN THE WESTVILLE AREA. REPORTS INDICATE
THAT 3 FEET OF WATER COVERS PARTS OF HIGHWAY 62 WEST OF WESTVILLE AND
SEVERAL CARS HAVE BEEN STRANDED.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
BRISTOW...EUFAULA...MUSKOGEE...OKEMAH...OKMULGEE...STILWELL...
TAHLEQUAH...WAGONER...BALD HILL...BARON...BEARDEN...BEGGS...BOLEY...
BOYNTON...BRAGGS...BUNCH...CASTLE...CHECOTAH...CHRISTIE...
CLEARVIEW...COLCORD...COOKSON...COUNCIL HILL...DEPEW...DEWAR...
ELDON...FORT GIBSON...GORE...GRAYSON AND HANNA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.

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

&&

LAT...LON 3583 9662 3587 9603 3586 9583 3588 9582
      3609 9522 3608 9512 3613 9511 3617 9502
      3620 9502 3649 9462 3567 9449 3532 9542
      3517 9598 3529 9599 3529 9643 3546 9645
      3542 9649 3544 9656 3538 9654 3540 9662

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 8:43 PM CDT	River Flood Warning	TSA	Cherokee	4 days
Apr 23, 8:59 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	33 min
Apr 23, 9:18 PM CDT	Special Weather Statement	TSA	Okfuskee	42 min
Apr 23, 9:19 PM CDT	Special Weather Statement	TSA	McIntosh	41 min
Apr 23, 9:42 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	29 min
Apr 23, 9:44 PM CDT	Special Weather Statement	TSA	Cherokee	46 min
Apr 23, 9:57 PM CDT	Special Weather Statement	TSA	Creek	48 min
Apr 23, 10:13 PM CDT	Special Weather Statement	TSA	Tulsa	47 min
Apr 23, 10:22 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Tulsa	38 min
Apr 23, 10:36 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Muskogee, Sequoyah	39 min
Apr 23, 10:41 PM CDT	Special Weather Statement	TSA	Muskogee	34 min
Apr 23, 10:50 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	29 min
Apr 23, 10:57 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware	63 min
Apr 23, 11:07 PM CDT	Special Weather Statement	TSA	Creek	53 min
Apr 23, 11:17 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee, McIntosh, Muskogee, Sequoyah, Wagoner	5 hr
Apr 23, 11:32 PM CDT	Wind Advisory	TSA	Choctaw, Haskell, Latimer, Pittsburg, Pushmataha	4 hr
Apr 24, 1:50 AM CDT	Special Weather Statement	TSA	Creek	25 min
Apr 24, 2:23 AM CDT	River Flood Warning	TSA	Cherokee	36 hr
Apr 24, 4:44 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	61 min
Apr 24, 5:34 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	41 min
Apr 24, 6:16 AM CDT	Special Weather Statement	TSA	Haskell, Latimer, LeFlore	44 min
Apr 24, 9:12 AM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Sequoyah	93 min
Apr 24, 4:44 PM CDT	Special Weather Statement	TSA	Pittsburg	31 min
Apr 24, 5:02 PM CDT	Special Weather Statement	TSA	Muskogee	28 min
Apr 24, 5:16 PM CDT	Tornado Warning	TSA	Haskell, Latimer, Pittsburg	44 min
Apr 24, 5:31 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Haskell, Muskogee, Sequoyah	44 min
Apr 24, 5:47 PM CDT	Tornado Warning	TSA	Haskell, LeFlore, Sequoyah	32 min
Apr 24, 5:58 PM CDT	Special Weather Statement	TSA	Osage	47 min
Apr 24, 5:59 PM CDT	Special Weather Statement	TSA	Creek, Tulsa	46 min
Apr 24, 6:05 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore	55 min
Apr 24, 6:11 PM CDT	Special Weather Statement	TSA	Latimer	34 min
Apr 24, 6:13 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	32 min
Apr 24, 6:16 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	44 min
Apr 24, 6:21 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	39 min
Apr 24, 6:29 PM CDT	Areal Flood Advisory	TSA	LeFlore, Sequoyah	61 min
Apr 24, 6:42 PM CDT	Special Weather Statement	TSA	Rogers	33 min
Apr 24, 6:48 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg and 1 more	6 hr
Apr 24, 6:48 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	42 min
Apr 24, 6:50 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	25 min
Apr 24, 6:52 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	53 min

Nearby

Flash Flood Warnings in Oklahoma, 2011 Every 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.