Alert archive / Kentucky / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 82, NWS Louisville, KY

May 21, 1998Edmonson County, Grayson County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at May 21, 1998, 6:25 PM CDT for Edmonson County, Grayson County, Kentucky. It was in force for 50 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
May 21, 1998, 6:25 PM CDT (23:25 UTC)
Expired
May 21, 1998, 7:15 PM CDT
In force
50 min
Issued by
NWS Louisville, KY
Area
Whole counties

Counties Edmonson County, KY, Grayson County, KY

The radar

The Louisville radar (KLVX), 77 km from the middle of the area, began a volume at 23:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

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

IssuedProductOfficeLasted
May 21, 4:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.4 hours before the alert went out and 137 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 12:00Z on 1998-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1382 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 12:00Z on 1998-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
1382 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
1095 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSDF 212325 RRA
SVRSDF
KYC061-085-213-227-220015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
725 PM EDT (625 PM CDT) THU MAY 21 1998

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN GRAYSON IN SOUTH CENTRAL KENTUCKY
  EDMONSON COUNTY IN SOUTH CENTRAL KENTUCKY
  SIMPSON COUNTY IN SOUTH CENTRAL KENTUCKY
  WARREN COUNTY IN SOUTH CENTRAL KENTUCKY

* UNTIL 715 PM CDT (815 PM EDT)

* AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF SEVERE THUNDERSTORMS FROM 30 MILES NORTHWEST OF BOWLING
  GREEN TO 20 MILES SOUTHWEST OF BOWLING GREEN...MOVING SOUTHEAST AT
  40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SADLER AT 640 PM CDT
  FRANKLIN AT 640 PM CDT
  BOWLING GREEN AT 650 PM CDT
  BROWNSVILLE AT 650 PM CDT


DAMAGING WINDS AND HEAVY RAIN ARE LIKELY.  HAIL IS ALSO POSSIBLE
WITH THIS STORM. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM
WINDOWS!

RNK

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 10:15 PM CDTSevere Thunderstorm WarningLMKBullitt35 min
May 20, 10:50 PM CDTSevere Thunderstorm WarningLMKBullitt, Nelson, Spencer35 min
May 20, 11:07 PM CDTSevere Thunderstorm WarningLMKAnderson33 min
May 21, 12:23 AM CDTSevere Thunderstorm WarningLMKCasey, Taylor32 min
May 21, 12:38 AM CDTFlash Flood WarningLMKBullitt82 min
May 21, 1:40 AM CDTSevere Thunderstorm WarningLMKAdair35 min
May 21, 5:38 PM CDTSevere Thunderstorm WarningLMKButler, Ohio37 min
May 21, 5:38 PM CDTSevere Thunderstorm WarningLMKLogan37 min
May 21, 6:18 PM CDTSevere Thunderstorm WarningLMKButler, Logan17 min
May 21, 6:18 PM CDTSevere Thunderstorm WarningLMKOhio17 min
May 21, 6:18 PM CDTSevere Thunderstorm WarningLMKButler, Logan22 min
May 21, 6:18 PM CDTSevere Thunderstorm WarningLMKOhio22 min
May 21, 6:25 PM CDTSevere Thunderstorm WarningLMKSimpson, Warren50 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; radar from the NEXRAD Level II archive.