Alert archive / Kentucky / Tornado Watches in 1999
Tornado Watch 141
The Storm Prediction Center issued this tornado watch at Apr 9, 1999, 3:00 AM EDT for 45 counties in Kentucky; 44 counties in Ohio; Cabell County, Wayne County, West Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 1999, 3:00 AM EDT (07:00 UTC)
- Expired
- Apr 9, 1999, 8:00 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 91 counties
Bath County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Campbell County, KY, Carter County, KY, Clark County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Greenup County, KY, Harrison County, KY, Jessamine County, KY, Johnson County, KY, Kenton County, KY, Lawrence County, KY, Lee County, KY, Lewis County, KY, Madison County, KY, Magoffin County, KY, Martin County, KY, Mason County, KY, Menifee County, KY, Mercer County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Owen County, KY, Pendleton County, KY, Pike County, KY, Powell County, KY, Robertson County, KY, Rowan County, KY, Scott County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Athens County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Coshocton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Hamilton County, OH, Hardin County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Knox County, OH, Lawrence County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Marion County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Muskingum County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Vinton County, OH, Warren County, OH, Cabell County, WV, Wayne County, WV
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 4:47 AM EDT | Severe Thunderstorm Warning | ILN | Owen | 63 min |
| Apr 9, 4:52 AM EDT | Tornado Warning | ILN | Hamilton | 63 min |
| Apr 9, 4:54 AM EDT | Tornado Warning | ILN | Owen | 66 min |
| Apr 9, 5:10 AM EDT | Tornado Warning | ILN | Grant | 50 min |
| Apr 9, 5:18 AM EDT | Severe Thunderstorm Warning | ILN | Clermont | 47 min |
| Apr 9, 5:19 AM EDT | Tornado Warning | ILN | Warren | 61 min |
| Apr 9, 5:25 AM EDT | Tornado Warning | ILN | Pendleton | 35 min |
| Apr 9, 5:36 AM EDT | Severe Thunderstorm Warning | ILN | Champaign | 49 min |
| Apr 9, 5:41 AM EDT | Tornado Warning | ILN | Clinton | 49 min |
| Apr 9, 5:45 AM EDT | Severe Thunderstorm Warning | ILN | Bracken | 35 min |
| Apr 9, 5:51 AM EDT | Severe Thunderstorm Warning | ILN | Union | 49 min |
| Apr 9, 7:16 AM EDT | Severe Thunderstorm Warning | ILN | Fairfield, Licking | 49 min |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 7.0 hours before the alert went out and 73 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
- 250 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1483 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 12:30 AM EDT | Tornado Watch | SPC | Breckinridge, Bullitt, Carroll, Daviess, Hancock, Hardin and 15 more | 5 hr |
| Apr 9, 5:30 AM EDT | Tornado Watch | SPC | Bell, Breathitt, Casey, Clay, Clinton, Cumberland and 17 more | 3 hr |
| Apr 9, 12:30 PM EDT | Severe Thunderstorm Watch | SPC | Ashland, Athens, Belmont, Carroll, Columbiana, Coshocton and 28 more | 6 hr |
| Apr 9, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | Berkeley, Grant, Hampshire, Hardy, Jefferson, Mineral and 2 more | 5 hr |
Nearby
Tornado Watches in Kentucky, 1999Tornado Watches in Ohio, 1999Tornado Watches in West Virginia, 1999Every tornado watch 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; the sounding from the Mesonet's radiosonde archive.