Alert archive / Kentucky / Severe Thunderstorm Watches in 1998
Severe Thunderstorm Watch 182
The Storm Prediction Center issued this severe thunderstorm watch at Apr 8, 1998, 6:00 AM EDT for 18 counties in Kentucky; 13 counties in Tennessee. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 8, 1998, 6:00 AM EDT (10:00 UTC)
- Expired
- Apr 8, 1998, 11:00 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Bell County, KY, Breathitt County, KY, Clay County, KY, Estill County, KY, Floyd County, KY, Harlan County, KY, Jackson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, McCreary County, KY, Owsley County, KY, Perry County, KY, Whitley County, KY, Anderson County, TN, Campbell County, TN, Claiborne County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Knox County, TN, Loudon County, TN, Morgan County, TN, Roane County, TN, Scott County, TN, Union County, TN, Van Buren County, TN
The radar
The Knoxville radar (KMRX), 88 km from the middle of the area, began a volume at 10:00 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 nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 10.0 hours before the alert went out and 211 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 8:00 PM EDT | Tornado Watch | SPC | Boone | 6 hr |
| Apr 7, 11:00 PM EDT | Tornado Watch | SPC | Hancock, Henderson | 6 hr |
| Apr 8, 2:00 AM EDT | Severe Thunderstorm Watch | SPC | Boone, Campbell, Kenton | 4 hr |
| Apr 8, 3:00 AM EDT | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Bath, Bourbon and 57 more | 6 hr |
| Apr 8, 1:15 PM EDT | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Boone, Bourbon and 57 more | 6 hr |
| Apr 8, 6:30 PM EDT | Tornado Watch | SPC | Allen, Breckinridge, Butler, Caldwell, Calloway, Carlisle and 29 more | 7 hr |
| Apr 8, 8:45 AM EDT | Tornado Watch | SPC | Chester, Fayette, Hardeman, Hardin, Haywood, McNairy and 2 more | 6 hr |
| Apr 8, 12:00 PM EDT | Tornado Watch | SPC | Bedford, Bledsoe, Cannon, Cheatham, Coffee, Cumberland and 28 more | 5 hr |
| Apr 8, 2:45 PM EDT | Tornado Watch | SPC | Anderson, Blount, Bradley, Campbell, Carter, Claiborne and 22 more | 6 hr |
| Apr 8, 7:30 PM EDT | Tornado Watch | SPC | Anderson, Bedford, Bledsoe, Blount, Bradley, Campbell and 52 more | 7 hr |
Nearby
Severe Thunderstorm Watches in Kentucky, 1998Severe Thunderstorm Watches in Tennessee, 1998Every severe thunderstorm 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.