Alert archive / Kentucky / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 57, NWS Louisville, KY
NWS Louisville, KY issued this severe thunderstorm warning at May 20, 1998, 2:25 PM CDT for Hancock County, Kentucky; Perry County, Indiana. It was in force for 40 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 20, 1998, 2:25 PM CDT (19:25 UTC)
- Expired
- May 20, 1998, 3:05 PM CDT
- In force
- 40 min
- Issued by
- NWS Louisville, KY
- Area
- Whole counties
Counties Perry County, IN, Hancock County, KY
The radar
The Louisville radar (KLVX), 67 km from the middle of the area, began a volume at 19:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 20, 2:45 PM CDT | Thunderstorm Wind 50 | Lewisport, KY | |
| May 20, 2:45 PM CDT | Hail 1.75 | Lewisport, KY | |
| May 20, 2:50 PM CDT | Thunderstorm Wind 60 | Tell City, IN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 20, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 7.4 hours before the alert went out and 204 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
- 647 J/kg
- Mixed-layer CIN
- -298 J/kg
- Mixed-layer LCL
- 1537 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Louisville, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 11:45 PM CDT | Severe Thunderstorm Warning | LMK | Jefferson, Oldham, Shelby, Spencer | 35 min |
| May 20, 12:00 AM CDT | Severe Thunderstorm Warning | LMK | Bullitt | 35 min |
| May 20, 12:18 AM CDT | Severe Thunderstorm Warning | LMK | Anderson, Franklin | 32 min |
| May 20, 12:43 AM CDT | Severe Thunderstorm Warning | LMK | Fayette | 32 min |
| May 20, 1:20 AM CDT | Severe Thunderstorm Warning | LMK | Madison | 20 min |
| May 20, 2:53 PM CDT | Severe Thunderstorm Warning | LMK | Breckinridge, Meade | 37 min |
| May 20, 3:29 PM CDT | Severe Thunderstorm Warning | LMK | Bullitt, Hardin, Jefferson | 36 min |
| May 20, 3:55 PM CDT | Severe Thunderstorm Warning | LMK | Larue, Nelson | 30 min |
| May 20, 4:00 PM CDT | Severe Thunderstorm Warning | LMK | Spencer | 30 min |
| May 20, 4:10 PM CDT | Severe Thunderstorm Warning | LMK | Marion, Washington | 30 min |
| May 20, 4:15 PM CDT | Severe Thunderstorm Warning | LMK | Green, Taylor | 30 min |
| May 20, 4:26 PM CDT | Severe Thunderstorm Warning | LMK | Anderson, Mercer | 39 min |
| May 20, 4:26 PM CDT | Severe Thunderstorm Warning | LMK | Boyle, Casey | 39 min |
| May 20, 4:40 PM CDT | Severe Thunderstorm Warning | LMK | Jessamine, Woodford | 45 min |
| May 20, 4:40 PM CDT | Severe Thunderstorm Warning | LMK | Garrard, Lincoln | 45 min |
| May 20, 5:05 PM CDT | Severe Thunderstorm Warning | LMK | Clark, Fayette, Madison | 40 min |
| May 19, 10:46 PM CDT | Severe Thunderstorm Warning | LMK | Orange, Washington | 29 min |
| May 20, 2:10 PM CDT | Severe Thunderstorm Warning | LMK | Dubois | 30 min |
| May 20, 3:05 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Harrison | 40 min |
Nearby
Severe Thunderstorm Warnings in Kentucky, 1998Severe Thunderstorm Warnings in Indiana, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.