Alert archive / Indiana / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 87, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 6, 1987, 2:10 PM EST for Lawrence County, Indiana. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Jul 6, 1987, 2:10 PM EST (19:10 UTC)
- Expired
- Jul 6, 1987, 2:50 PM EST
- In force
- 40 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
County Lawrence County, IN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Salem-Leckrone, IL (KSLO), launched 12:00Z, 7.2 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
- 2811 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 724 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 8.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KIND 061910 SVRIND INC093-061950- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE INDIANAPOLIS IN 210 PM EST MON JUL 6 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 250 PM EST FOR THE FOLLOWING COUNTY OF SOUTH CENTRAL INDIANA... LAWRENCE AT 205 PM EST NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM OVER THE MARTIN/LAWRENCE COUNTY ABOUT 10 MILES WEST OF BEDFORD. THIS STORM WAS MOVING SLOWLY EAST AT 20 MPH AND WILL PASS THROUGH BEDFORD. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. ALLSOPP
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 6, 12:15 PM EST, 1 hour 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA 1215 PM EST MON JUL 6 1987 ...THERE IS A SEVERE THUNDERSTORM WATCH FOR SOUTHERN INDIANA UNTIL 500 PM EST... THE WATCH IS SOUT OF A LINE FROM 10 MILES NORTH OF VINCENNES TO 45 MILES NORTHEAST OF LOUISVILLE. DANGEROUS LIGHTNING...LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. HEAVY RAINFALL IS ALSO POSSIBLE. AT 1205 PM...THUNDERSTORMS WERE OVER SOUTHWEST INDIANA FROM AROUND WESTPHALIA...OR 15 MILES NORTHEAST OF VINCENNES...TO JUST WEST OF BEDFORD. THE STORMS WERE MOVING SLOWLY EAST. THE STORMS WERE SOME OF THE AREA THAT RECEIVED HEAVY RAINFALL LATE SATURDAY AFTERNOON. HEAVY RAINFWALL IS POSSIBLE THIS AFTERNOON AND THAT COULD LEAD TO FLOODING OF LOW AND FLOOD PRONE AREAS. BE ALERT FOR HEAVY RAINFALL.
Special weather statement, Jul 6, 12:24 PM EST, 1 hour 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA 1215 PM EST MON JUL 6 1987 ...THERE IS A SEVERE THUNDERSTORM WATCH FOR SOUTHERN INDIANA UNTIL 500 PM EST... THE WATCH IS SOUTH OF A LINE FROM 10 MILES NORTH OF VINCENNES TO 45 MILES NORTHEAST OF LOUISVILLE. DANGEROUS LIGHTNING...LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. HEAVY RAINFALL IS ALSO POSSIBLE. AT 1205 PM...THUNDERSTORMS WERE OVER SOUTHWEST INDIANA FROM AROUND WESTPHALIA...OR 15 MILES NORTHEAST OF VINCENNES...TO JUST WEST OF BEDFORD. THE STORMS WERE MOVING SLOWLY EAST. THE STORMS WERE OVER SOME OF THE AREA THAT RECEIVED HEAVY RAINFALL LATE SATURDAY AFTERNOON. H]EAVY RAINFALL IS POSSIBLE THIS AFTERNOON AND THAT COULD LEAD TO FLOODING OF LOW AND FLOOD PRONE AREAS. BE ALERT FOR HEAVY RAINFALL. DS
Special weather statement, Jul 6, 1:21 PM EST, 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA 120 PM EST MON JUL 6 1987 ...THERE IS A SEVERE THUNDERSTORM WATCH FOR SOUTHERN INDIANA UNTIL 500 PM EST... THE WATCH IS SOUTH OF A LINE FROM 10 MILES NORTH OF VINCENNES TO 45 MILES NORTHEAST OF LOUISVILLE. DANGEROUS LIGHTNING...LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. HEAVY RAINFALL IS ALSO POSSIBLE. AT 115 PM...THUNDERSTORMS WERE OVER SOUTHWEST INDIANA FROM AROUND THE ILLINOIS STATE LINE NEAR WESTPHALIA...TO 10 MILES WEST OF BEDFORD NEAR NEWBERRY AND ODON. STORMS WERE OVER SOME OF THE AREA THAT RECEIVED HEAVY RAINFALL LATE SATURDAY AFTERNOON. HEAVY RAINFALL IS POSSIBLE THIS AFTERNOON AND COULD LEAD TO FLOODING OF LOW AND FLOOD PRONE AREAS. KENYON
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 5:06 AM EST | Flash Flood Warning | IND | Clay, Vigo | 2 hr |
| Jul 6, 5:06 AM EST | Flash Flood Warning | IND | Owen, Putnam | 2 hr |
| Jul 6, 2:44 PM EST | Severe Thunderstorm Warning | IND | Gibson, Knox | 61 min |
| Jul 6, 3:06 PM EST | Severe Thunderstorm Warning | IND | Pike, Vanderburgh, Warrick | 39 min |
| Jul 6, 3:10 PM EST | Flash Flood Warning | IND | Greene | 2 hr |
| Jul 6, 3:15 PM EST | Severe Thunderstorm Warning | IND | Greene, Lawrence | 35 min |
| Jul 6, 3:47 PM EST | Severe Thunderstorm Warning | IND | Dubois | 28 min |
| Jul 6, 5:12 PM EST | Severe Thunderstorm Warning | IND | Montgomery, Tippecanoe | 38 min |
| Jul 6, 6:18 PM EST | Tornado Warning | IND | Newton | 42 min |
| Jul 6, 6:39 PM EST | Severe Thunderstorm Warning | IND | Jasper | 31 min |
| Jul 6, 6:46 PM EST | Severe Thunderstorm Warning | IND | White | 34 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 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; the sounding from the Mesonet's radiosonde archive.