Alert archive / Kentucky / Tornado Watches in 1998

Tornado Watch 180

April 8, 19984 states

The Storm Prediction Center issued this tornado watch at Apr 8, 1998, 3:00 AM EDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 8, 1998, 3:00 AM EDT (07:00 UTC)
Expired
Apr 8, 1998, 9:00 AM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 104 counties

Clark County, IN, Jefferson County, IN, Switzerland County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Bullitt County, KY, Butler County, KY, Carroll County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lewis County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Woodford County, KY, Scioto County, OH, Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hardin County, TN, Hickman County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 41 km from the middle of the area, began a volume at 07:03 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.

Warnings issued inside it

18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 8, 3:02 AM EDTSevere Thunderstorm WarningLMKJefferson33 min
Apr 8, 3:15 AM EDTTornado WarningLMKEdmonson30 min
Apr 8, 3:28 AM EDTSevere Thunderstorm WarningLMKSimpson32 min
Apr 8, 3:33 AM EDTSevere Thunderstorm WarningLMKBarren32 min
Apr 8, 3:33 AM EDTTornado WarningLMKHart32 min
Apr 8, 3:39 AM EDTTornado WarningLMKBarren31 min
Apr 8, 3:49 AM EDTSevere Thunderstorm WarningLMKAllen31 min
Apr 8, 3:52 AM EDTSevere Thunderstorm WarningOHXDavidson38 min
Apr 8, 3:57 AM EDTTornado WarningLMKGreen, Metcalfe23 min
Apr 8, 4:23 AM EDTSevere Thunderstorm WarningLMKAdair32 min
Apr 8, 4:25 AM EDTSevere Thunderstorm WarningOHXWilson35 min
Apr 8, 4:41 AM EDTSevere Thunderstorm WarningOHXRutherford, Wilson49 min
Apr 8, 4:52 AM EDTSevere Thunderstorm WarningOHXJackson53 min
Apr 8, 5:07 AM EDTSevere Thunderstorm WarningOHXLawrence38 min
Apr 8, 5:10 AM EDTSevere Thunderstorm WarningJKLPulaski35 min
Apr 8, 5:12 AM EDTSevere Thunderstorm WarningOHXOverton33 min
Apr 8, 5:21 AM EDTSevere Thunderstorm WarningJKLLaurel, Rockcastle49 min
Apr 8, 5:30 AM EDTSevere Thunderstorm WarningOHXWhite45 min

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 7.0 hours before the alert went out and 53 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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 8:00 PM EDTTornado WatchSPCBartholomew, Benton, Blackford, Boone, Brown, Carroll and 44 more6 hr
Apr 7, 11:00 PM EDTTornado WatchSPCBartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 23 more6 hr
Apr 8, 2:00 AM EDTSevere Thunderstorm WatchSPCAdams, Bartholomew, Blackford, Brown, Dearborn, Decatur and 24 more4 hr
Apr 8, 1:15 PM EDTTornado WatchSPCClark, Crawford, Dearborn, Decatur, Fayette, Floyd and 12 more6 hr
Apr 8, 6:00 AM EDTSevere Thunderstorm WatchSPCBell, Breathitt, Clay, Estill, Floyd, Harlan and 12 more5 hr
Apr 8, 6:30 PM EDTTornado WatchSPCAllen, Breckinridge, Butler, Caldwell, Calloway, Carlisle and 29 more7 hr
Apr 8, 8:45 AM EDTTornado WatchSPCChester, Fayette, Hardeman, Hardin, Haywood, McNairy and 2 more6 hr
Apr 8, 12:00 PM EDTTornado WatchSPCBedford, Bledsoe, Cannon, Cheatham, Coffee, Cumberland and 28 more5 hr
Apr 8, 2:45 PM EDTTornado WatchSPCAnderson, Blount, Bradley, Campbell, Carter, Claiborne and 22 more6 hr
Apr 8, 7:30 PM EDTTornado WatchSPCAnderson, Bedford, Bledsoe, Blount, Bradley, Campbell and 52 more7 hr

Nearby

Tornado Watches in Kentucky, 1998Tornado Watches in Tennessee, 1998Tornado Watches in Indiana, 1998Every tornado watch 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.