Alert archive / Oklahoma / Flash Flood Warnings in 2001

Flash Flood Warning 36, NWS Tulsa, OK

September 8, 2001Pittsburg County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Sep 8, 2001, 9:58 PM CDT for Pittsburg County, Oklahoma. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Sep 8, 2001, 9:58 PM CDT (02:58 UTC)
Expired: Sep 9, 2001, 1:00 AM CDT
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Pittsburg County, OK

The radar

The Tulsa radar (KINX), 135 km from the middle of the area, began a volume at 02:47 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 00:00Z, 3.0 hours before the alert went out and 143 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: 172 J/kg
Mixed-layer CIN: -243 J/kg
Mixed-layer LCL: 953 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -78 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -3.7

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 090300
FFWTUL
OKC121-090600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
958 PM CDT SAT SEP 8 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 100 AM CDT

* AT 958 PM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN 4
  MILES WEST OF BLOCKER...MOVING NORTHEAST AT 30 MPH.

  RADAR INDICATES THAT 1 TO 2 INCHES OF RAIN HAS ALREADY FALLEN OVER 
  THE WARNED AREA. ANOTHER 1 TO 2 INCHES WILL BE POSSIBLE   
  THROUGH 100 AM CDT.

* SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY THE HEAVY RAIN
  INCLUDE CANADIAN...INDIANOLA...CROWDER...BLOCKER...SCIPIO...
  KREBS...ALDERSON...HAYWOOD...HARTSHORNE...SAVANNA...BLANCO AND
  MCALESTER.

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 3506 9609 3470 9607 3478 9555 3532 9545

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 9:36 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	39 min
Sep 8, 10:55 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2001 Every flash flood warning in 2001

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.