Alert archive / Kentucky / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 21, NWS Louisville, KY
NWS Louisville, KY issued this severe thunderstorm warning at Jul 5, 1987, 6:35 PM EDT for Bullitt County, Jefferson County, Nelson County, Kentucky. It was in force for 55 min. 6 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
- Jul 5, 1987, 6:35 PM EDT (22:35 UTC)
- Expired
- Jul 5, 1987, 7:30 PM EDT
- In force
- 55 min
- Issued by
- NWS Louisville, KY
- Area
- Whole counties
Counties Bullitt County, KY, Jefferson County, KY, Nelson County, KY
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 5, 6:50 PM EDT | Thunderstorm Wind 52 | Nelson, KY | |
| Jul 5, 6:50 PM EDT | Thunderstorm Wind 52 | Nelson, KY | |
| Jul 5, 6:59 PM EDT | Thunderstorm Wind 0 | Bullitt, KY | |
| Jul 5, 7:00 PM EDT | Thunderstorm Wind 0 | Nelson, KY | |
| Jul 5, 7:00 PM EDT | Thunderstorm Wind 61 | Jefferson, KY | |
| Jul 5, 7:18 PM EDT | Thunderstorm Wind 0 | Jefferson, KY |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 10.6 hours before the alert went out and 225 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
- 129 J/kg
- Mixed-layer CIN
- -198 J/kg
- Mixed-layer LCL
- 1186 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSDF 052235
SVRSDF
KYC029-111-123-179-INC043-175-052330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
635 PM EDT SUN JUL 5 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 730 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTH CENTRAL KENTUCKY
...BULLITT...JEFFERSON...LARUE
...NELSON
IN SOUTH INDIANA
...FLOYD...WASHINGTON
SEVERE THUNDERSTORMS ARE MOVING EAST ACROSS PORTIONS OF CENTRAL
KENTUCKY AT 40 TO 45 MILES PER HOUR. THESE STORMS ARE PRODUCING WIND
SPEEDS NEAR 60 MILES PER HOUR CAUSING TREE AND POWER LINE DAMAGE. 50
MILE PER HOUR WINDS...HAIL AND VERY HEAVY RAIN WERE REPORTED IN
CORYDON INDIANA...LOCATED 18 MILES WEST OF LOUISVILLE AT 626 PM EDT.
THIS STORM WILL MOVE FURTHER EAST ACROSS SOUTHERN INDIANA AND CENTRAL
KENTUCKY THROUGH 730 PM EDT.
THIS WARNING DOES INCLUDE THE LOUISVILLE METROPOLITAN AREA.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.
REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW ENFORECEMENT AGENCY
FOR RELAY TO THE NATIONAL WEATHER SERVICE.
POOLEThe office that day
Everything else NWS Louisville, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 6:02 PM EDT | Severe Thunderstorm Warning | LMK | Breckinridge, Hardin, Meade | 43 min |
| Jul 5, 6:35 PM EDT | Severe Thunderstorm Warning | LMK | Larue | 55 min |
| Jul 5, 7:00 PM EDT | Severe Thunderstorm Warning | LMK | Trimble | 60 min |
| Jul 5, 7:00 PM EDT | Severe Thunderstorm Warning | LMK | Green, Taylor | 60 min |
| Jul 5, 7:00 PM EDT | Severe Thunderstorm Warning | LMK | Marion, Washington | 60 min |
| Jul 5, 7:00 PM EDT | Severe Thunderstorm Warning | LMK | Henry, Oldham, Shelby | 60 min |
| Jul 5, 7:26 PM EDT | Severe Thunderstorm Warning | LMK | Adair, Cumberland, Metcalfe | 64 min |
| Jul 5, 7:41 PM EDT | Severe Thunderstorm Warning | LMK | Boyle, Casey, Lincoln, Mercer | 64 min |
| Jul 5, 7:41 PM EDT | Severe Thunderstorm Warning | LMK | Pulaski, Russell, Wayne | 64 min |
| Jul 5, 7:41 PM EDT | Severe Thunderstorm Warning | LMK | Anderson, Franklin, Woodford | 64 min |
| Jul 5, 7:41 PM EDT | Severe Thunderstorm Warning | LMK | Clinton | 64 min |
Nearby
Severe Thunderstorm Warnings in Kentucky, 1987Every severe thunderstorm warning in 1987
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.