Alert archive / Indiana / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 150, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 31, 1986, 7:41 AM CDT for Vanderburgh County, Indiana. It was in force for 34 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
- Jul 31, 1986, 7:41 AM CDT (12:41 UTC)
- Expired
- Jul 31, 1986, 8:15 AM CDT
- In force
- 34 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
County Vanderburgh 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 31, 7:50 AM 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, 0.7 hours before the alert went out and 134 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
- 1188 J/kg
- Mixed-layer CIN
- -390 J/kg
- Mixed-layer LCL
- 1369 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 433 m²/s²
- 0-3 km storm-relative helicity
- 501 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEVV 311241 SVREVV INC163-311315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EVANSVILLE IN 741 AM CDT THU JUL 31 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTHWEST INDIANA...VANDERBURGH AT 635 AM CDT A STRONG THUNDERSTORM WITH STRONG WINDS AND DANGEROUS LIGHTNING WAS MOVING RAPIDLY THROUGH NORTHWEST VANDERBURGH COUNTY INDIANA. THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY! IF THREATENING WEATHER APPROACHES GO TO A SAFE PLACE IMMEDIATELY. TO REPORT SEVERE WEATHER CONTACT THE NEAREST LAW ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.
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 31, 2:50 AM CDT, 4 hours 51 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 250 AM EST THU JUL 31 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST INDIANA UNTIL 7AM... AT 245 AM EST VERY STRONG THUNDERSTORMS HAVE MOVED INTO WESTCENTRAL INDIANA. THE STRONG THUNDERSTORMS WERE 20 MILES NORTH OF TERRE HAUTE IN WEST CENTRAL INDIANA. THESE THUNDERSTORMS MAY PRODUCE BRIEF VERY HEAVY RAINFALL AND STRONG WINDS AND LIGHTING AND POSSIBLE SMALL HAIL. THE THUNDERSTORMS WERE MOVING TO THE SOUTHEAST AT 35 TO 40 MILES AN HOUR. EROS
Special weather statement, Jul 31, 4:00 AM CDT, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 358 AM EST THU JUL 31 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST INDIANA UNTIL 7AM... AT 350 AM EST...VERY STRONG THUNDERSTORMS WERE OVER PARTS OF WEST CENTRAL AND SOUTHWEST INDIANA...AND EXTENDED BACK INTO EAST CENTRAL ILLINOIS. THE STRONGEST STORMS WERE OVER EAST CENTRAL ILLINOIS FROM 25 TO 30 MILES WEST OF TERRE HAUTE...AND EXTENDED FARTHER TO THE WEST. OTHER STRONG STORMS WERE 15 MILES NORTH AND 25 MILES EAST OF VINCENNES. MOVEMENT WAS EAST AT ABOUT 25 MILES AN HOUR. THE STRONGER THUNDERSTORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN...INTENSE LIGHTNING AND GUSTY WINDS. STEIGERWALDT
Special weather statement, Jul 31, 6:20 AM CDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 620 AM EST THU JUL 31 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST INDIANA UNTIL 700 AM EST... AT 615 AM EST...A LINE OF VERY STRONG THUNDERSTORMS 10 MILES WIDE EXTENDED FROM 25 MILES SOUTH OF TERRE HAUTE NEAR SULLIVAN TO NEAR TELL CITY ON THE OHIO RIVER. ANOTHER LINE OF STRONG THUNDERSTORMS ABOUT 10 MILES WIDE STRETCHED FROM NEAR LAFAYETTE TO NEAR INDIANAPOLIS TO 10 MILES EAST OF MARTINSVILLE. THE THUNDERSTORMS WERE PART OF A LARGE AREA OF RAIN THAT WAS ALONG AND WEST OF A LINE FROM LOGANSPORT THROUGH INDIANAPOLIS TO NEAR LOUISVILLE. THE PRECIPITATION WAS MOVING SOUTHEAST AT 25 MILES AN HOUR. . REMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM EST FOR THAT PART OF INDIANA SOUTH OF A LINE FROM ROCKVILLE TO 10 MILES NORTH OF BLOOMINGTON...AND WEST OF A LINE FROM 10 MILES NORTH OF BLOOMINGTON TO 20 MILES SOUTH OF ENGLISH. X REPORT SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. STEIGERWALDT
Special weather statement, Jul 31, 7:07 AM CDT, 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 705 AM EST THU JUL 31 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST INDIANA UNTIL NOON EST... AT 700 AM EST...A FEW STRONG THUNDERSTORMS WERE MOVING THROUGH THE INDIANAPOLIS METROPOLITAN AREA. THE THUNDERSTORMS WERE PART OF A LARGE AND SOLID AREA OF RAIN THAT WAS ALONG AND WEST OF A LINE FROM 40 MILES EAST OF LOGANSPORT TO 40 MILES EAST OF INDIANAPOLIS TO NEAR LOUISVILLE. THE PRECIPITATION WAS MOVING SOUTHEAST AT 30 MILES AN HOUR. . THE THUNDERSTORMS WILL CAUSE FREQUENT LIGHTNING AND BRIEF HEAVY RAIN IN THE METROPOLITAN AREA AS THEY MOVE THROUGH. REMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECzT UNTIL NOON EST FOR THAT PART OF INDIANA SOUTH OF A LINE FROM 15 MILES NORTH OF VINCENNES TO 10 MILES WEST OF BEDFORD TO 30 MILES WEST OF LOUISVILLE. STEIGERWALDT
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:45 AM CDT | Severe Thunderstorm Warning | IND | Sullivan, Vigo | 45 min |
| Jul 31, 6:04 AM CDT | Severe Thunderstorm Warning | IND | Pike | 26 min |
| Jul 31, 6:58 AM CDT | Severe Thunderstorm Warning | IND | Gibson, Posey | 32 min |
| Jul 31, 6:58 AM CDT | Severe Thunderstorm Warning | IND | Knox | 32 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 1986Every severe thunderstorm warning in 1986
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.