Alert archive / Indiana / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 27, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 1, 1987, 3:08 PM EST for Boone County, Clinton County, Indiana. It was in force for 27 min. 1 report 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
- Jun 1, 1987, 3:08 PM EST (20:08 UTC)
- Expired
- Jun 1, 1987, 3:35 PM EST
- In force
- 27 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
Counties Boone County, IN, Clinton County, IN
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 |
|---|---|---|---|
| Jun 1, 3:12 PM EST | Thunderstorm Wind 0 | Clinton, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Dayton/James M C, OH (KDAY), launched 12:00Z, 8.1 hours before the alert went out and 196 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
- 1320 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KIND 012009
SVRIND
INC023-011-012035-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
308 PM EST MON JUN 1 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 335 PM EST FOR THE FOLLOWING COUNTIES OF
CENTRAL INDIANA... EXTREME SOUTHWEST CLINTON... NORTH BOONE
GOLFBALL SIZE HAIL WAS REPORTED WITH A THUNDERSTORM NEAR COLFAX...
20 MILES SOUTHEAST OF LAFAYETTE AT 302 PM. THE STORM WAS MOVING
SOUTHEAST AT 20 MPH.
A FUNNEL CLOUD WAS REPORTED AT 305 PM NEAR CLARKSHILL.
THESE STORMS CAN ALSO PRODUCE A SMALL TORNADO WITH LITTLE OR NO
ADVANCE WARNING.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS
WHERE WATER COVERS THE ROAD.
DSWhat 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, Jun 1, 1:22 PM EST, 1 hour 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 120 PM EST MON JUN 1 1987 VERY STRONG THUNDERSTORMS WERE OVER NORTHWEST INDIANA AT 115 PM EST. TWO VERY STRONG STORMS...ONE NORTHWEST OF LAFAYETTE AND THE OTHER NORTHWEST OF BROOKSTON IN WHITE COUNTY CONTINUED TO MOVE ACROSS THE AREA. DANGEROUS LIGHTNING AND BRIEF HEAVY RAINFALL WILL OCCUR WITH THESE STORMS. HAIL AND STRONG WINDS ARE ALSO LIKELY. PERSONS IN THE LAFAYETTE AN4D BROOKSTON SHOULD BE ALERT FOR THREATENING WEATHER CONDITIONS AS THESE STORMS MOVE EAST AT 20 MPH. ECY
Local storm report, Jun 1, 1:36 PM EST, 1 hour 32 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
135 PM EST MON JUN 1 1987
130 PM EST TWO CIVIL DEFENSE OBSERVERS REPORTED GOLFBALL AND BASEBALL
SIZE HAIL FROM OTTERBEIN TO 4 MILES NOORTHWEST OF OTTERBEIN
IN EXTREME SOUTHEAST BENTON COUNTY.
DSLocal storm report, Jun 1, 2:07 PM EST, 1 hour 1 minute before
STORM REPORT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 207 PM EST MON JUN 1 1987 200 PM EST STATE POLICE REPORTED GOLFBALL SIZE HAIL IN LAFAYETTE. DS
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 1:27 PM EST | Severe Thunderstorm Warning | IND | Tippecanoe | 33 min |
| Jun 1, 2:01 PM EST | Severe Thunderstorm Warning | IND | Tippecanoe | 44 min |
| Jun 1, 3:00 PM EST | Severe Thunderstorm Warning | IND | Fountain, Vermillion | 45 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.