Alert archive / Kentucky / Flash Flood Warnings in 2001

Flash Flood Warning 21, NWS Jackson, KY

August 4, 2001Knott County, Kentucky

NWS Jackson, KY issued this flash flood warning at Aug 4, 2001, 2:30 AM EDT for Knott County, Kentucky. 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: Aug 4, 2001, 2:30 AM EDT (06:30 UTC)
Expired: Aug 4, 2001, 5:00 AM EDT
In force: 3 hr
Issued by: NWS Jackson, KY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Knott County, KY

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.5 hours before the alert went out and 241 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: 1687 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 760 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KJKL 040630
FFWJKL
FFWJKL
KYC119-040900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON KY
230 AM EDT SAT AUG 4 2001

THE NATIONAL WEATHER SERVICE IN JACKSON KY IS EXTENDING THE

* FLASH FLOOD WARNING FOR...
  KNOTT COUNTY

* UNTIL 500 AM EDT

* AT 215 AM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED BETWEEN 3 
AND 4 INCHES OF RAIN HAS FALLEN OVER THE PAST SEVERAL 
HOURS...ESPECIALLY NEAR HINDMAN...BRINKLEY AND REDFOX. AT AROUND 230 
AM EDT...LAW ENFORCEMENT REPORTED AROUND 5 FEET OF WATER OVER 
HIGHWAY 550 IN HINDMAN. SCATTERED SHOWERS WILL CONTINUE TO PASS 
ACROSS THE AREA OVER THE NEXT COUPLE OF HOURS...WHICH WILL ONLY ADD 
TO THE RUNOFF PROBLEMS. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
JACKSON KY.

LAT...LON 3729 8272 3728 8281 3720 8298 3725 8310
          3739 8310 3746 8313 3752 8310 3750 8295
          3747 8291 3746 8283 3742 8283 3742 8277
          3734 8277

LAWSON

The office that day

Everything else NWS Jackson, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 3, 9:16 PM EDT	Flash Flood Warning	JKL	Floyd, Pike	3 hr
Aug 3, 11:30 PM EDT	Flash Flood Warning	JKL	Knott	3 hr
Aug 4, 12:14 AM EDT	Flash Flood Warning	JKL	Floyd, Pike	3 hr
Aug 4, 1:58 AM EDT	Flash Flood Warning	JKL	Letcher, Perry	3 hr
Aug 4, 3:08 AM EDT	Flash Flood Warning	JKL	Harlan	4 hr
Aug 4, 4:55 AM EDT	Flash Flood Warning	JKL	Letcher, Perry	2 hr

Nearby

Flash Flood Warnings in Kentucky, 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.