Alert archive / Kentucky / Flash Flood Warnings in 1989

Flash Flood Warning 40, NWS Jackson, KY

October 17, 1989Perry County, Kentucky

NWS Jackson, KY issued this flash flood warning at Oct 17, 1989, 7:11 AM EDT for Perry County, Kentucky. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Oct 17, 1989, 7:11 AM EDT (11:11 UTC)
Expired
Oct 17, 1989, 11:15 AM EDT
In force
4 hr
Issued by
NWS Jackson, KY
Area
Whole counties

County Perry County, KY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Huntington/Tri S, WV (KHTS), launched 00:00Z, 11.2 hours before the alert went out and 140 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, Huntington/Tri S, WV at 00:00Z on 1989-10-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 317 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, Huntington/Tri S, WV at 00:00Z on 1989-10-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.193958Sfc1 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
317 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
727 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 16, 11:06 PM EDTFlash Flood WarningJKLJackson4 hr
Oct 17, 2:55 AM EDTFlash Flood WarningJKLJackson3 hr
Oct 17, 5:33 AM EDTFlash Flood WarningJKLOwsley4 hr
Oct 17, 6:05 AM EDTFlash Flood WarningJKLLeslie4 hr
Oct 17, 6:29 AM EDTFlash Flood WarningJKLClay, Knox4 hr
Oct 17, 6:29 AM EDTFlash Flood WarningJKLJackson4 hr
Oct 17, 7:11 AM EDTFlash Flood WarningJKLBell4 hr
Oct 17, 8:14 AM EDTFlash Flood WarningJKLBreathitt84 min
Oct 17, 8:14 AM EDTFlash Flood WarningJKLFloyd, Magoffin3 hr
Oct 17, 8:50 AM EDTFlash Flood WarningJKLKnott, Letcher, Pike2 hr

Nearby

Flash Flood Warnings in Kentucky, 1989Every flash flood warning in 1989

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.