Alert archive / Oklahoma / Flash Flood Warnings in 2001

Flash Flood Warning 32, NWS Tulsa, OK

August 10, 2001Okfuskee County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Aug 10, 2001, 6:12 PM CDT for Okfuskee County, Oklahoma. It was in force for 93 min. 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: Aug 10, 2001, 6:12 PM CDT (23:12 UTC)
Expired: Aug 10, 2001, 7:45 PM CDT
In force: 93 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Okfuskee County, OK

The radar

The Norman radar (KTLX), 85 km from the middle of the area, began a volume at 23:11 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, 11.2 hours before the alert went out and 98 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: 343 J/kg
Mixed-layer CIN: -204 J/kg
Mixed-layer LCL: 1575 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -98 m²/s²
0-3 km storm-relative helicity: -119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 102312
FFWTUL
FFWTUL
OKC107-110045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
612 PM CDT FRI AUG 10 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 745 PM CDT

* AT 612 PM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN 3
  MILES NORTH OF CASTLE...MOVING NORTHEAST AT 20 MPH.

  RADAR INDICATES THAT 2 TO 4 INCHES OF RAIN HAS ALREADY FALLEN OVER 
  THE WARNED AREA. ANOTHER 1 TO 3 INCHES WILL BE POSSIBLE THROUGH 
  745 PM CDT.

* SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY THE HEAVY RAIN
  INCLUDE CASTLE...BEARDEN AND OKEMAH.

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 3556 9644 3530 9640 3529 9619 3562 9632

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 3:02 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee	43 min
Aug 10, 3:08 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	52 min
Aug 10, 3:32 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee	43 min
Aug 10, 4:03 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	42 min
Aug 10, 4:41 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Pawnee	49 min
Aug 10, 5:55 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	35 min
Aug 10, 6:26 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	49 min
Aug 10, 6:58 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	47 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.