Alert archive / Kentucky / Tornado Watches in 1999
Tornado Watch 110
The Storm Prediction Center issued this tornado watch at Apr 3, 1999, 1:30 PM CST for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 1999, 1:30 PM CST (19:30 UTC)
- Expired
- Apr 3, 1999, 7:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 49 counties
Alexander County, IL, Gallatin County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Williamson County, IL, Ballard County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Webster County, KY, Mississippi County, MO, New Madrid County, MO, Scott County, MO, Montgomery County, TN, Robertson County, TN
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 1:37 PM CST | Severe Thunderstorm Warning | PAH | Alexander | 38 min |
| Apr 3, 1:59 PM CST | Severe Thunderstorm Warning | PAH | Mississippi | 31 min |
| Apr 3, 2:08 PM CST | Severe Thunderstorm Warning | PAH | Scott | 22 min |
| Apr 3, 2:13 PM CST | Severe Thunderstorm Warning | PAH | Johnson, Pulaski | 47 min |
| Apr 3, 2:57 PM CST | Severe Thunderstorm Warning | PAH | Pope | 33 min |
| Apr 3, 3:33 PM CST | Severe Thunderstorm Warning | PAH | Union | 42 min |
| Apr 3, 4:07 PM CST | Severe Thunderstorm Warning | PAH | Henderson | 38 min |
| Apr 3, 4:24 PM CST | Tornado Warning | PAH | Henderson | 36 min |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 7.5 hours before the alert went out and 293 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
- 1517 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 646 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 257 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 10.5
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 3, 3:45 AM CST | Severe Thunderstorm Watch | SPC | Barry, Barton, Bates, Benton, Cedar, Christian and 13 more | 5 hr |
| Apr 3, 2:00 PM CST | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dent, Douglas and 17 more | 5 hr |
| Apr 3, 4:00 PM CST | Tornado Watch | SPC | Dunklin, Pemiscot | 5 hr |
Nearby
Tornado Watches in Kentucky, 1999Tornado Watches in Illinois, 1999Tornado Watches in Missouri, 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.