Alert archive / Indiana / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 79, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 5, 1987, 4:11 PM CDT for Vanderburgh County, Warrick County, Indiana. It was in force for 34 min. 2 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, 4:11 PM CDT (21:11 UTC)
- Expired
- Jul 5, 1987, 4:45 PM CDT
- In force
- 34 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
Counties Vanderburgh County, IN, Warrick 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 |
|---|---|---|---|
| Jul 5, 4:15 PM CDT | Thunderstorm Wind 0 | Warrick, IN | |
| Jul 5, 4:17 PM CDT | Thunderstorm Wind 0 | Vanderburgh, 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
Salem-Leckrone, IL (KSLO), launched 12:00Z, 9.2 hours before the alert went out and 144 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
- 151 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEVV 052111 RRA SVREVV INC163-173-052145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EVANSVILLE IN 411 PM CDT SUN JUL 5 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHWEST INDIANA...VANDERBURGH AND WARRICK AT 410 PM CDT...SEVERE THUNDERSTORMS WERE MOVING OVER VANDEBURGH AND TOWARD WARRICK COUNTIES IN SOUTHWEST INDIANA...THEY WERE MOVING EAST AT 45 TO 50 MPH. IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORECED SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND LIGHTNING. REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS... STAY AWAY FROM HIGH OBJECTS. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES AND ELECTRICAL EQUIPMENT. ZIMMER
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 4:25 PM CDT | Severe Thunderstorm Warning | IND | Dubois, Perry, Spencer | 65 min |
| Jul 5, 4:50 PM CDT | Severe Thunderstorm Warning | IND | Dubois | 25 min |
| Jul 5, 5:02 PM CDT | Severe Thunderstorm Warning | IND | Daviess, Martin | 58 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.