Alert archive / Oklahoma / Flash Flood Warnings in 2015

Flash Flood Warning 69, NWS Tulsa, OK

May 28, 20157 counties in Oklahoma

NWS Tulsa, OK issued this flash flood warning at May 28, 2015, 10:00 AM CDT for 7 counties in Oklahoma. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 28, 2015, 10:00 AM CDT (15:00 UTC)
Expired: May 28, 2015, 2:00 PM CDT
In force: 4 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Cherokee County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 47 km from the middle of the area, began a volume at 15:03 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.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 3.0 hours before the alert went out and 172 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: 39 J/kg
Mixed-layer CIN: -204 J/kg
Mixed-layer LCL: 1310 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

111 
WGUS54 KTSA 281500
FFWTSA
OKC021-091-101-107-111-143-145-281900-
/O.NEW.KTSA.FF.W.0069.150528T1500Z-150528T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
1000 AM CDT THU MAY 28 2015

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA...
  MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA...
  NORTHERN MCINTOSH COUNTY IN SOUTHEAST OKLAHOMA...
  OKMULGEE COUNTY IN NORTHEAST OKLAHOMA...
  SOUTHEASTERN TULSA COUNTY IN NORTHEAST OKLAHOMA...
  WAGONER COUNTY IN NORTHEAST OKLAHOMA...
  WESTERN CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA...

* UNTIL 200 PM CDT

* AT 959 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA. OVER AN 
INCH OF RAINFALL HAS ALREADY OCCURRED WITH AN ADDITIONAL INCH 
POSSIBLE. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE...
  MUSKOGEE...OKEMAH...OKMULGEE...TULSA...WAGONER...BALD HILL...
  BEARDEN...BEGGS...BIXBY...BOYNTON...BRAGGS...CHECOTAH...
  CLEARVIEW...COUNCIL HILL...COWETA...DEWAR...FORT GIBSON...
  GLENPOOL...GRAYSON...GREENLEAF STATE PARK...HASKELL...HENRYETTA...
  HOFFMAN...HULBERT...KEEFETON...LAKE EUFAULA STATE PARK...MORRIS...
  OKAY...OKFUSKEE AND OKMULGEE STATE PARK.

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.

LOW WATER CROSSINGS IN HILLY TERRAIN ARE ESPECIALLY DANGEROUS IN
HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND
ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER
TO CARRY VEHICLES AWAY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 

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

&&

LAT...LON 3564 9621 3564 9619 3566 9619 3586 9604
      3601 9601 3608 9528 3607 9512 3609 9512
      3611 9490 3564 9509 3563 9513 3556 9512
      3535 9521 3531 9641

$$

2 follow-up statements

435 
WGUS74 KTSA 281647
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1147 AM CDT THU MAY 28 2015

OKC021-091-101-107-111-143-145-281900-
/O.CON.KTSA.FF.W.0069.000000T0000Z-150528T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEROKEE OK-MCINTOSH OK-MUSKOGEE OK-OKFUSKEE OK-OKMULGEE OK-TULSA OK-
WAGONER OK-
1147 AM CDT THU MAY 28 2015

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WAGONER...SOUTHEASTERN
TULSA...OKMULGEE...EASTERN OKFUSKEE...MUSKOGEE...NORTHERN MCINTOSH
AND WESTERN CHEROKEE COUNTIES UNTIL 200 PM CDT...

AT 1140 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
AREAS OF LIGHT RAIN ACROSS THE WARNED AREA. HOWEVER...RAIN WAS 
ENDING IN WESTERN OKMULGEE COUNTY...AND WILL GRADUALLY END FROM THE 
WEST.  

ALTHOUGH ADDITIONAL RAINFALL AMOUNTS WILL REMAIN LIGHT...2 TO 3 
INCHES OF RAIN HAS ALREADY FALLEN AND FLOODING OF LOW LYING AREAS 
WILL LIKELY CONTINUE. THE HEAVIEST RAINFALL OF 2 TO 3 INCHES HAS 
FALLEN FROM NEAR STONEBLUFF AND HASKELL...SOUTHWARD TO HITCHITA AND 
STIDHAM AND WEST TOWARD HENRYETTA AND SCHULTER. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
MUSKOGEE...OKEMAH...OKMULGEE...TULSA...WAGONER...BALD HILL...
BEARDEN...BEGGS...BIXBY...BOYNTON...BRAGGS...CHECOTAH...CLEARVIEW...
COUNCIL HILL...COWETA...DEWAR...FORT GIBSON...GLENPOOL...GRAYSON...
GREENLEAF STATE PARK...HASKELL...HENRYETTA...HOFFMAN...HULBERT...
KEEFETON...LAKE EUFAULA STATE PARK...MORRIS...OKAY...OKFUSKEE AND
OKMULGEE STATE PARK.

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.

LOW WATER CROSSINGS IN HILLY TERRAIN ARE ESPECIALLY DANGEROUS IN
HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND 
ALTERNATE ROUTES. 

A 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 3564 9621 3564 9619 3566 9619 3586 9604
      3601 9601 3608 9528 3607 9512 3609 9512
      3611 9490 3564 9509 3563 9513 3556 9512
      3535 9521 3531 9641

$$

796 
WGUS74 KTSA 281855
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
155 PM CDT THU MAY 28 2015

OKC021-091-101-107-111-143-145-281909-
/O.EXP.KTSA.FF.W.0069.000000T0000Z-150528T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEROKEE OK-MCINTOSH OK-MUSKOGEE OK-OKFUSKEE OK-OKMULGEE OK-TULSA OK-
WAGONER OK-
155 PM CDT THU MAY 28 2015

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WAGONER...
SOUTHEASTERN TULSA...OKMULGEE...EASTERN OKFUSKEE...MUSKOGEE...
NORTHERN MCINTOSH AND WESTERN CHEROKEE COUNTIES WILL BE ALLOWED TO
EXPIRE AT 200 PM CDT...

AN AREAL FLOOD WARNING CONTINUES FOR MUCH OF THE AREA THROUGH 930 PM 
TONIGHT. FLOODING FROM RECENT RAINS WILL CONTINUE TO CAUSE FLOODING 
OF AREAS NEAR SOME STREAMS...LAKES AND RIVERS.

LAT...LON 3564 9621 3564 9619 3566 9619 3586 9604
      3601 9601 3608 9528 3607 9512 3609 9512
      3611 9490 3564 9509 3563 9513 3556 9512
      3535 9521 3531 9641

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 9:20 PM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Choctaw, Craig, Delaware, Haskell and 14 more	48 hr
May 28, 2:23 AM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more	59 hr
May 28, 2:27 AM CDT	Areal Flood Advisory	TSA	Osage	2 hr
May 28, 7:33 AM CDT	Special Weather Statement	TSA	Creek	27 min
May 28, 7:39 AM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, McIntosh, Muskogee, Pittsburg, Pushmataha	2 hr
May 28, 7:58 AM CDT	Special Weather Statement	TSA	Pawnee	32 min
May 28, 8:26 AM CDT	Special Weather Statement	TSA	Pittsburg	34 min
May 28, 8:37 AM CDT	Special Weather Statement	TSA	Choctaw	23 min
May 28, 8:50 AM CDT	Special Weather Statement	TSA	McIntosh, Rogers, Tulsa, Wagoner	25 min
May 28, 8:53 AM CDT	Flash Flood Warning	TSA	Latimer, McIntosh, Pittsburg	4 hr
May 28, 9:02 AM CDT	Special Weather Statement	TSA	Choctaw, Haskell, Latimer, Pittsburg, Pushmataha	28 min
May 28, 9:15 AM CDT	Special Weather Statement	TSA	McIntosh, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner	45 min
May 28, 9:16 AM CDT	Areal Flood Advisory	TSA	Craig, McIntosh, Mayes, Muskogee, Nowata, Okmulgee and 4 more	119 min
May 28, 9:38 AM CDT	Areal Flood Advisory	TSA	Choctaw, Haskell, Latimer, McIntosh, Muskogee, Pittsburg and 1 more	82 min
May 28, 9:42 AM CDT	Special Weather Statement	TSA	Pushmataha	33 min
May 28, 9:52 AM CDT	Flash Flood Warning	TSA	Choctaw, Haskell, Latimer, LeFlore, McIntosh, Muskogee and 3 more	6 hr
May 28, 10:05 AM CDT	Special Weather Statement	TSA	LeFlore	55 min
May 28, 10:18 AM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore	42 min
May 28, 10:35 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 5 more	6 hr
May 28, 11:30 AM CDT	Special Weather Statement	TSA	Sequoyah	30 min
May 28, 12:00 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee	4 hr

Nearby

Flash Flood Warnings in Oklahoma, 2015 Every flash flood warning in 2015

Sources

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.