Alert archive / Oklahoma / Flash Flood Warnings in 2001

Flash Flood Warning 29, NWS Tulsa, OK

June 30, 2001Haskell County, McIntosh County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Jun 30, 2001, 2:15 AM CDT for Haskell County, McIntosh County, Oklahoma. It was in force for 2 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: Jun 30, 2001, 2:15 AM CDT (07:15 UTC)
Expired: Jun 30, 2001, 4:15 AM CDT
In force: 2 hr
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Haskell County, OK, McIntosh County, OK

The radar

The Tulsa radar (KINX), 96 km from the middle of the area, began a volume at 07:16 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, 7.3 hours before the alert went out and 177 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: 1853 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1446 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 300717
FFWTUL
OKC061-091-300915-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
215 AM CDT SAT JUN 30 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  WESTERN HASKELL COUNTY IN SOUTHEAST OKLAHOMA
  EASTERN MCINTOSH COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 415 AM CDT

* AT 215 AM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN 
  CONTINUING ACROSS EASTERN MCINTOSH AND WESTERN HASKELL             
  COUNTIES. THE STORMS WERE MOVING SOUTH AT 20 MILES AN HOUR.      

  RADAR INDICATES THAT 2-3 INCHES OF RAIN HAS ALREADY FALLEN OVER    
  THE WARNED AREA. ANOTHER 1-2 INCHES WILL BE POSSIBLE THROUGH 330
  AM CDT. THIS RAINFALL WILL BE ENOUGH TO CAUSE 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.

LAT...LON 3541 9561 3523 9561 3512 9525 3528 9527
          3545 9540

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 12:11 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	49 min
Jun 30, 12:41 AM CDT	Severe Thunderstorm Warning	TSA	Haskell	64 min
Jun 30, 12:45 AM CDT	Severe Thunderstorm Warning	TSA	Pawnee	60 min
Jun 30, 12:58 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	62 min
Jun 30, 1:04 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh	36 min
Jun 30, 1:37 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee	68 min
Jun 30, 1:41 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh	64 min
Jun 30, 2:11 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	64 min
Jun 30, 2:22 AM CDT	Severe Thunderstorm Warning	TSA	Haskell	53 min
Jun 30, 2:35 AM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	55 min
Jun 30, 2:49 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	56 min
Jun 30, 2:59 AM CDT	Flash Flood Warning	TSA	Pittsburg	2 hr
Jun 30, 3:17 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	58 min
Jun 30, 4:17 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	43 min

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.