Alert archive / Oklahoma / Flash Flood Warnings in 2002

Flash Flood Warning 3, NWS Tulsa, OK

March 18, 2002Choctaw County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Mar 18, 2002, 10:02 PM CST for Choctaw County, Oklahoma. It was in force for 118 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 18, 2002, 10:02 PM CST (04:02 UTC)
Expired: Mar 19, 2002, 12:00 AM CST
In force: 118 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Choctaw County, OK

The radar

The Western Arkansas radar (KSRX), 180 km from the middle of the area, began a volume at 04:03 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

Fort Worth, TX (KFWD), launched 00:00Z, 4.0 hours before the alert went out and 206 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: 2 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 445 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 313 m²/s²
0-3 km storm-relative helicity: 345 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 190402
FFWTUL
OKC023-190600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
1000 PM CST MON MAR 18 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  CHOCTAW COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL MIDNIGHT CST

* AT 1000 PM CST RADAR INDICATED AN AREA OF VERY HEAVY RAIN WITH      
  EMBEDDED THUNDERSTORMS OVER WESTERN CHOCTAW COUNTY...MOVING NORTHEAST AT 
  30 MPH.

  RADAR INDICATES THAT AROUND AN INCH OF RAIN HAS ALREADY FALLEN     
  OVER THE WARNED AREA. RAINFALL INTENSITY WILL INCREASE OVER THE    
  NEXT 1 TO 2 HOURS WITH AN ADDITIONAL 1 TO 2 INCHES POSSIBLE         
  THROUGH MIDNIGHT CST.

* SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY THE HEAVY RAIN
  INCLUDE HUGO...GOODLAND...SAWYER...FORT TOWSON...BOSWELL...SOPER...
  MESSER AND KENT.

EXCESSIVE RUNOFF WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND
STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES...AS WELL AS FARMLAND
ALONG THE BANKS OF CREEKS AND STREAMS.

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.

LAT...LON 3412 9592 3389 9588 3394 9519 3416 9516

1 follow-up statement

000 
WGUS74 KTSA 190514
FFSTUL
OKC023-190600-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1110 PM CST MON MAR 18 2002

...FLASH FLOOD WARNING CONTINUES FOR CHOCTAW COUNTY UNTIL MIDNIGHT...

AT 1110 PM CST...RADAR CONTINUED TO SHOW AN AREA OF SHOWERS OVER 
WESTERN CHOCTAW COUNTY MOVING NORTHEAST AT 20 MPH.

RADAR INDICATES THAT 3 INCHES OF RAIN HAS ALREADY FALLEN OVER THE 
WARNED AREA. ADDITIONAL RAINFALL THROUGH MIDNIGHT WILL BE LIGHT.  
HOWEVER...RUNOFF FROM THE RECENT HEAVY RAINS WILL CONTINUE TO CAUSE 
FLOODING ESPECIALLY IN LOW LYING AREAS...SMALL STREAMS AND CREEKS. 

SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY THE HEAVY RAIN
INCLUDE HUGO...GOODLAND...UNGER...SOPER...MESSER...KENT...FALLON AND
SPEER.

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.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 8:34 PM CST	Flash Flood Warning	TSA	Latimer, LeFlore, Pushmataha	3 hr
Mar 18, 8:42 PM CST	Flash Flood Warning	TSA	Latimer, LeFlore, Pushmataha	3 hr
Mar 18, 11:54 PM CST	Flash Flood Warning	TSA	LeFlore	96 min
Mar 19, 1:31 AM CST	Flash Flood Warning	TSA	Latimer, LeFlore, Pittsburg, Pushmataha	4 hr
Mar 19, 7:17 AM CST	Flash Flood Warning	TSA	Choctaw, Latimer, LeFlore, Pushmataha	4 hr
Mar 19, 11:01 AM CST	Flash Flood Warning	TSA	Choctaw, Latimer, LeFlore, Pittsburg, Pushmataha	5 hr
Mar 19, 3:54 PM CST	Flash Flood Warning	TSA	Choctaw, Latimer, LeFlore, Pittsburg, Pushmataha	6 hr

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.