Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 147, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 31, 1986, 6:58 AM CDT for Edwards County, Wabash County, White County, Illinois. It was in force for 32 min.
The area
The counties it named.
The facts
- Issued
- Jul 31, 1986, 6:58 AM CDT (11:58 UTC)
- Expired
- Jul 31, 1986, 7:30 AM CDT
- In force
- 32 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
Counties Edwards County, IL, Wabash County, IL, White County, IL
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 00:00Z, 12.0 hours before the alert went out and 85 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
- 1925 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEVV 311158 SVREVV INC051-083-129-ILC185-193-047-311230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EVANSVILLE IN 658 AM CDT THU JUL 31 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHWEST INDIANA...GIBSON...KNOX AND POSEY SOUTHEAST ILLINOIS...WABASH...WHITE AND EDWARDS AT 650 A CDT STRONG THUNDERSTnORMS WERE MOVING RAPIDLY THROUGH SOUTHEAST ILLINOIS. POWERE WAS OUT AND TREES DOWN IN OLNEY ILLINOIS WITH THES STORMS. THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY!
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 8 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, 2 hours 58 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, 38 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
Nearby
Severe Thunderstorm Warnings in Illinois, 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; the sounding from the Mesonet's radiosonde archive.