Alert archive / Kentucky / Flash Flood Warnings in 2002

Flash Flood Warning 7, NWS Louisville, KY

March 20, 2002Grayson County, Kentucky

NWS Louisville, KY issued this flash flood warning at Mar 20, 2002, 5:26 AM CST for Grayson 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 counties it named.

The facts

Issued
Mar 20, 2002, 5:26 AM CST (11:26 UTC)
Expired
Mar 20, 2002, 8:15 AM CST
In force
3 hr
Issued by
NWS Louisville, KY
Area
Whole counties

County Grayson County, KY

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 11.4 hours before the alert went out and 150 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2002-03-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 54 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2002-03-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
54 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
664 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLMK 201126
FFWSDF
KYC085-201415-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
525 AM CST WED MAR 20 2002

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GRAYSON COUNTY IN SOUTH CENTRAL KENTUCKY

* UNTIL 815 AM CST

* AT 520 AM CST...ALTHOUGH THERE IS A BRIEF LULL IN THE RAIN ACROSS  
  GRAYSON COUNTY...SOME ROADS REMAIN IMPASSABLE AND FLOODING OF
  STREAMS AND CREEKS CONTINUE. ANY NEW RAIN WILL ONLY SERVE TO
  AGGRAVATE THE PROBLEM. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE 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.

REPORT FLOODING TO YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
LOUISVILLE.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 20, 2:18 AM CSTFlash Flood WarningLMKButler, Grayson3 hr
Mar 20, 5:04 AM CSTFlash Flood WarningLMKBoyle, Larue, Marion, Mercer, Washington116 min
Mar 20, 6:08 AM CSTFlash Flood WarningLMKGreen, Taylor3 hr
Mar 20, 6:24 AM CSTFlash Flood WarningLMKBourbon, Fayette, Jessamine3 hr
Mar 20, 6:27 AM CSTFlash Flood WarningLMKBourbon, Fayette, Jessamine3 hr
Mar 20, 6:39 AM CSTFlash Flood WarningLMKHarrison, Nicholas, Scott3 hr
Mar 20, 6:41 AM CSTFlash Flood WarningLMKClark, Madison3 hr
Mar 20, 7:00 AM CSTFlash Flood WarningLMKBoyle, Garrard, Larue, Marion, Mercer, Washington3 hr
Mar 20, 8:01 AM CSTFlash Flood WarningLMKEdmonson, Hart104 min
Mar 20, 9:07 AM CSTFlash Flood WarningLMKGreen, Taylor3 hr
Mar 20, 9:19 AM CSTFlash Flood WarningLMKBourbon, Fayette, Jessamine116 min
Mar 20, 9:55 AM CSTFlash Flood WarningLMKGarrard, Larue, Madison, Mercer, Nicholas80 min

Nearby

Flash Flood Warnings in Kentucky, 2002Every flash flood warning in 2002

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.