Alert archive / Oklahoma / Flash Flood Warnings in 2001

Flash Flood Warning 3, NWS Tulsa, OK

May 11, 2001Muskogee County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at May 11, 2001, 4:31 PM CDT for Muskogee County, Oklahoma. It was in force for 119 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: May 11, 2001, 4:31 PM CDT (21:31 UTC)
Expired: May 11, 2001, 6:30 PM CDT
In force: 119 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Muskogee County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.5 hours before the alert went out and 183 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: 590 J/kg
Mixed-layer CIN: -250 J/kg
Mixed-layer LCL: 1202 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 329 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 112132
FFWTUL
OKC101-112330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
431 PM CDT FRI MAY 11 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 630 PM CDT

* AT 431 PM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN  
  OVER MUCH OF MUSKOGEE COUNTY. FROM 1 TO 2 INCHES OF RAIN HAS FALLEN
  SINCE AROUND 330 PM AND AN ADDITIONAL 1 TO 3 INCHES MAY FALL LATE
  THIS AFTERNOON.

  
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER MA.Y 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 3579 9569 3558 9555 3557 9520 3579 9520

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 1:41 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	49 min
May 11, 2:35 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	40 min
May 11, 3:19 PM CDT	Severe Thunderstorm Warning	TSA	Haskell	41 min
May 11, 4:05 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee, Tulsa, Wagoner	40 min
May 11, 4:45 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	30 min
May 11, 4:59 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	61 min
May 11, 5:20 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	40 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.