Alert archive / Kentucky / Flash Flood Warnings in 1992

Flash Flood Warning 18, NWS Jackson, KY

July 31, 1992Boyd County, Kentucky

NWS Jackson, KY issued this flash flood warning at Jul 31, 1992, 10:57 AM EDT for Boyd County, Kentucky. It was in force for 83 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1992, 10:57 AM EDT (14:57 UTC)
Expired
Jul 31, 1992, 12:20 PM EDT
In force
83 min
Issued by
NWS Jackson, KY
Area
Whole counties

County Boyd County, KY

The nearest sounding before it

Huntington/Tri S, WV (KHTS), launched 12:00Z, 3.0 hours before the alert went out and 16 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 12:00Z on 1992-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 437 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 12:00Z on 1992-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.19395878Sfc1 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
437 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
562 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
185 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
Jul 30, 9:51 PM EDTSevere Thunderstorm WarningJKLMorgan13 min
Jul 30, 10:15 PM EDTSevere Thunderstorm WarningJKLJohnson28 min
Jul 30, 10:20 PM EDTSevere Thunderstorm WarningJKLLawrence23 min
Jul 30, 10:24 PM EDTSevere Thunderstorm WarningJKLClay, Knox51 min
Jul 30, 11:10 PM EDTSevere Thunderstorm WarningJKLLeslie50 min
Jul 30, 11:42 PM EDTFlash Flood WarningJKLLetcher, Perry60 min
Jul 31, 10:39 AM EDTFlash Flood WarningJKLCarter, Elliott66 min
Jul 31, 10:41 AM EDTSevere Thunderstorm WarningJKLLawrence34 min
Jul 30, 10:20 PM EDTSevere Thunderstorm WarningJKLWayne40 min
Jul 31, 10:57 AM EDTFlash Flood WarningJKLCabell, Wayne83 min
Jul 31, 11:09 AM EDTFlash Flood WarningJKLWayne36 min
Jul 31, 11:09 AM EDTSevere Thunderstorm WarningJKLWayne36 min

Nearby

Flash Flood Warnings in Kentucky, 1992Every flash flood warning in 1992

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.