Alert archive / Kentucky / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 2, NWS Jackson, KY

January 17, 1999Laurel County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jan 17, 1999, 11:12 PM EST for Laurel County, Kentucky. It was in force for 48 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jan 17, 1999, 11:12 PM EST (04:12 UTC)
Expired
Jan 18, 1999, 12:00 AM EST
In force
48 min
Issued by
NWS Jackson, KY
Area
Whole counties

County Laurel County, KY

What was reported inside it

TimeReportWhereRemark
Jan 17, 11:40 PM ESTThunderstorm WindEast Bernstadt, KYTrees down.
Jan 17, 11:45 PM ESTHail 0.75London, KY

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 17, 10:30 PM ESTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 4.2 hours before the alert went out and 247 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 1999-01-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 687 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 1999-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 352 square meters per square second.1939587897Sfc1 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
687 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
352 m²/s²
0-3 km storm-relative helicity
343 m²/s²
Significant tornado parameter
1.4
Supercell composite
7.9

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
Jan 17, 10:43 PM ESTSevere Thunderstorm WarningJKLWayne32 min
Jan 17, 11:23 PM ESTSevere Thunderstorm WarningJKLKnox, McCreary, Whitley47 min
Jan 17, 11:30 PM ESTSevere Thunderstorm WarningJKLJackson45 min
Jan 17, 11:38 PM ESTSevere Thunderstorm WarningJKLClay, Lee, Owsley62 min
Jan 17, 11:38 PM ESTSevere Thunderstorm WarningJKLBell62 min
Jan 17, 11:54 PM ESTSevere Thunderstorm WarningJKLBreathitt, Menifee, Wolfe61 min
Jan 17, 11:54 PM ESTSevere Thunderstorm WarningJKLHarlan, Leslie, Perry61 min
Jan 18, 12:24 AM ESTSevere Thunderstorm WarningJKLFloyd, Knott, Letcher, Magoffin61 min
Jan 18, 12:44 AM ESTSevere Thunderstorm WarningJKLMartin, Pike61 min
Jan 18, 12:44 AM ESTSevere Thunderstorm WarningJKLJohnson61 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.