Alert archive / Oklahoma / Flash Flood Warnings in 2002

Flash Flood Warning 15, NWS Tulsa, OK

April 7, 20027 counties in Oklahoma

NWS Tulsa, OK issued this flash flood warning at Apr 7, 2002, 5:14 PM 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: Apr 7, 2002, 5:14 PM CDT (22:14 UTC)
Expired: Apr 7, 2002, 9:00 PM CDT
In force: 4 hr
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

Counties Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 101 km from the middle of the area, began a volume at 22:02 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, 10.2 hours before the alert went out and 195 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: 460 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 368 m²/s²
0-3 km storm-relative helicity: 553 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.

000 
WGUS54 KTSA 072214
FFWTUL
OKC023-061-077-079-121-127-135-080200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
514 PM CDT SUN APR 7 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA
  CHOCTAW COUNTY IN SOUTHEAST OKLAHOMA
  HASKELL COUNTY IN SOUTHEAST OKLAHOMA
  LATIMER COUNTY IN SOUTHEAST OKLAHOMA
  LE FLORE COUNTY IN SOUTHEAST OKLAHOMA
  PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA
  PUSHMATAHA COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 900 PM CDT

* AT 513 PM CDT RADAR INDICATED NUMEROUS SHOWERS AND THUNDERSTORMS 
  WITH VERY HEAVY RAIN CONTINUING ACROSS A LARGE PART OF SOUTHEAST 
  OKLAHOMA. THE HEAVIEST RAINS AT 513 PM WERE LOCATED ACROSS 
  SEQUOYAH...HASKELL...AND LATIMER COUNTIES WHERE 2 TO 4 INCHES OF 
  RAIN HAS ALREADY FALLEN IN THE PAST 24 HOURS. MOVEMENT OF THE 
  ACTIVITY WAS TO THE NORTHEAST AT 35 MPH. AN ADDITIONAL 1 TO 3 
  INCHES OF RAIN IS EXPECTED THROUGH 900 PM.

  ANOTHER CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN WAS MOVING 
  NORTHEAST FROM TEXAS INTO EXTREME SOUTHEAST OKLAHOMA. VERY INTENSE 
  RAINFALL RATES OF 2 INCHES PER HOUR WILL AFFECT THE HUGO AND 
  ANTLERS AREAS THROUGH 7 PM...WHICH WILL LIKELY RUN OFF AND CAUSE 
  FLASH FLOODING. THIS ACTIVITY WAS ALSO MOVING NORTHEAST AT 35 MPH.

* SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY THE HEAVY 
  RAIN INCLUDE MCALESTER...STIGLER...SALLISAW...WILBURTON... 
  POTEAU...PAGE...CLAYTON. ..ANTLERS...AND HUGO.

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 FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER MAY BE TOO DEEP TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND.

LAT...LON 3513 9608 3454 9581 3388 9581 3396 9519
          3448 9500 3452 9446 3565 9448 3561 9506
          3533 9518

1 follow-up statement

000 
WGUS74 KTSA 080047
FFSTUL
OKC023-061-077-079-121-127-135-080200-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
745 PM CDT SUN APR 7 2002

...FLASH FLOOD WARNING CONTINUES FOR SEQUOYAH...HASKELL...LE FLORE...
   PITTSBURG...LATIMER...PUSHMATAHA AND CHOCTAW COUNTIES UNTIL 
   900 PM CDT...

AT 745 PM CDT...RAIN AND THUNDERSTORMS CONTINUED OVER THE WARNED 
AREA.  RAINFALL REPORTS HAVE BEEN BETWEEN 2 AND 3 INCHES...WITH A 
NARROW STIPE OF 4 TO 6 INCH RAINS OCCURRING FROM WESTERN PUSHMATAHA 
COUNTY...ACROSS SOUTHEAST PITTSBURG COUNTY AND ON INTO THE AREAS 
NEAR WILBURTON AND STIGLER.  

PARTS OF HIGHWAY 9 IN HASKELL AND LE FLORE COUNTIES HAS BEEN 
FLOODED.  PARTS OF HIGHWAY 59 IN SEQUOYAH COUNTY HAVE ALSO BEEN 
COVERED WITH WATER.

RAIN AND THUNDERSTORMS WILL CONTINUE THROUGHOUT THE WARNED AREA. AN 
ADDITIONAL 1 TO 3 INCHES OF RAIN WILL FALL IN SOME LOCATIONS.  
WIDESPREAD FLOODING OF SMALL CREEKS...DITCHES AND LOW-LYING AREAS 
WILL OCCUR...WITH THE POTENTIAL FOR SERIOUS FLOODING FROM IN THE 
AREAS AROUND ANTLERS...CLAYTON...BENGAL...POTEAU AND SALISAW.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER MAY BE TOO DEEP TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND.

LAT...LON 3388 9576 3416 9598 3416 9578 3451 9578
          3451 9567 3459 9567 3469 9609 3515 9600
          3527 9522 3564 9512 3565 9447 3451 9446
          3451 9504 3394 9515 3394 9561

Nearby

Flash Flood Warnings in Oklahoma, 2002 Every flash flood warning in 2002

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.