Alert archive / Kentucky / Tornado Warnings in 1991

Tornado Warning 1, NWS Jackson, KY

April 9, 1991Johnson County, Martin County, Kentucky

NWS Jackson, KY issued this tornado warning at Apr 9, 1991, 5:33 PM EDT for Johnson County, Martin County, Kentucky. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Apr 9, 1991, 5:33 PM EDT (21:33 UTC)
Expired
Apr 9, 1991, 6:15 PM EDT
In force
42 min
Issued by
NWS Jackson, KY
Area
Whole counties

Counties Johnson County, KY, Martin County, KY

The nearest sounding before it

Huntington/Tri S, WV (KHTS), launched 12:00Z, 9.6 hours before the alert went out and 62 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 1991-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 211 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 1991-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 157 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
211 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
764 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
157 m²/s²
0-3 km storm-relative helicity
192 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
Apr 9, 4:27 PM EDTSevere Thunderstorm WarningJKLLee, Owsley63 min
Apr 9, 4:44 PM EDTSevere Thunderstorm WarningJKLClay, Knox46 min
Apr 9, 4:57 PM EDTSevere Thunderstorm WarningJKLBreathitt, Leslie, Perry48 min
Apr 9, 5:05 PM EDTSevere Thunderstorm WarningJKLGreenup55 min
Apr 9, 5:17 PM EDTSevere Thunderstorm WarningJKLKnott, Magoffin43 min
Apr 9, 5:29 PM EDTSevere Thunderstorm WarningJKLLawrence61 min
Apr 9, 5:33 PM EDTSevere Thunderstorm WarningJKLLetcher57 min
Apr 9, 5:33 PM EDTSevere Thunderstorm WarningJKLFloyd57 min
Apr 9, 5:51 PM EDTSevere Thunderstorm WarningJKLPike39 min
Apr 9, 5:47 PM EDTSevere Thunderstorm WarningJKLGallia, Jackson58 min
Apr 9, 5:47 PM EDTSevere Thunderstorm WarningJKLMeigs58 min
Apr 9, 5:29 PM EDTSevere Thunderstorm WarningJKLCabell61 min

Nearby

Tornado Warnings in Kentucky, 1991Every tornado warning in 1991Tornadoes in 1991

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.