Alert archive / Kentucky / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 13, NWS Louisville, KY

April 8, 1998Adair County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Apr 8, 1998, 3:23 AM CDT for Adair County, Kentucky. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 8, 1998, 3:23 AM CDT (08:23 UTC)
Expired
Apr 8, 1998, 3:55 AM CDT
In force
32 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Adair County, KY

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 8, 2:00 AM CDTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 8.4 hours before the alert went out and 160 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 1998-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 441 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 1998-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 246 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
441 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1130 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
246 m²/s²
0-3 km storm-relative helicity
370 m²/s²
Significant tornado parameter
0.6
Supercell composite
12.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSDF 080822 RRA
SVRSDF
KYC001-080855-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
423 AM EDT (323 AM CDT) WED APR 8 1998

* SEVERE THUNDERSTORM WARNING FOR
  ADAIR COUNTY - SOUTH CENTRAL KENTUCKY

* UNTIL 355 AM CDT (455 AM EDT)

* SOME LOCATIONS AFFECTED
  COLUMBIA BY 330 AM CDT
  SPARKSVILLE BY 340 AM CDT

* AT 320 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS 30 MILES WEST OF SOMERSET ON THE GREEN-
ADAIR COUNTY LINE. THE LINE WAS MOVING EAST AROUND 40 MPH.

IF YOU ARE OUTSIDE OR IN THE PATH OF THIS STORM...SEEK SHELTER
INSIDE A STRONG BUILDING. AVOID WINDOWS AND STAY OFF THE TELEPHONE
UNTIL THE STOJRM HAS PASSED.

A TORNADO WATCH IS ALSO IN EFFECT.  SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE NOTICE.

KOCH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 1:29 AM CDTSevere Thunderstorm WarningLMKLogan46 min
Apr 8, 1:33 AM CDTTornado WarningLMKLogan47 min
Apr 8, 1:51 AM CDTSevere Thunderstorm WarningLMKWarren39 min
Apr 8, 2:02 AM CDTSevere Thunderstorm WarningLMKTrimble33 min
Apr 8, 2:15 AM CDTTornado WarningLMKEdmonson30 min
Apr 8, 2:28 AM CDTSevere Thunderstorm WarningLMKSimpson32 min
Apr 8, 2:33 AM CDTSevere Thunderstorm WarningLMKBarren32 min
Apr 8, 2:33 AM CDTTornado WarningLMKHart32 min
Apr 8, 2:39 AM CDTTornado WarningLMKBarren31 min
Apr 8, 2:49 AM CDTSevere Thunderstorm WarningLMKAllen31 min
Apr 8, 2:57 AM CDTTornado WarningLMKGreen, Metcalfe23 min
Apr 8, 12:04 PM CDTSevere Thunderstorm WarningLMKButler, Warren31 min
Apr 8, 12:28 PM CDTSevere Thunderstorm WarningLMKEdmonson17 min
Apr 8, 12:33 PM CDTSevere Thunderstorm WarningLMKGrayson, Ohio27 min
Apr 8, 1:05 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Hardin25 min
Apr 8, 1:35 PM CDTSevere Thunderstorm WarningLMKHardin, Meade30 min
Apr 8, 1:35 PM CDTSevere Thunderstorm WarningLMKBullitt30 min
Apr 8, 1:53 PM CDTTornado WarningLMKBoyle, Mercer22 min
Apr 8, 1:58 PM CDTSevere Thunderstorm WarningLMKJefferson, Spencer32 min
Apr 8, 2:16 PM CDTSevere Thunderstorm WarningLMKShelby29 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1998Every severe thunderstorm warning in 1998

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.