Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 72, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Sep 19, 1986, 3:35 PM CDT for Macoupin County, Morgan County, Illinois. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Sep 19, 1986, 3:35 PM CDT (20:35 UTC)
- Expired
- Sep 19, 1986, 4:30 PM CDT
- In force
- 55 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Macoupin County, IL, Morgan 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 12:00Z, 8.6 hours before the alert went out and 137 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
- 527 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 614 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSPI 192035 SVRSPI ILC137-117-192130- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPRINGFIELD IL 335 PM CDT FRI SEP 19 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF CENTRAL ILLINOIS...SOUTHERN MORGAN AND NORTHERN MACOUPIN AT 330PM CDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 35 MILES SOUTHWEST OF SPRINGFIELD ILLINOIS...ABOUT 12 MILES NORTHWEST OF PALMYRA ILLINOIS. THE SEVERE THUNDERSTORM WAS MOVING EAST AND SOUTHEAST AT 20 MPH. REMEMBER..A SEVERE THUNDERSTORM PRODUCES DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. IF THREATENING WEATHER APPROACHES...YOU SHOULD GO TO A SAFE PLACE. ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORT OF SEVERE WEATHER TO THE NATIONAL WEATHER SE4RVICE. ATTN ISP DIST..9 AND 18 HUGHES
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, Sep 19, 2:47 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 245 PM CDT FRI SEP 19 1986 ...PARTIAL CANCELLATION OF SEVERE THUNDERSTORM WATCH... THE NATIONAL WEATHER SERVICE AT PEORIA HAS CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 511 IN THIS PART OF CENTRAL ILLINOIS. COUNTIES WHERE THE WATCH IS NO LONGER IN EFFECT INCLUDE... SCHUYLER...MARSHALL...WOODFORD...TAZEWELL...MASON...AND MCLEAN. ALSO HENDERSON...WARREN...KNOX...HANCOCK...MCDONOUGH...FULTON... STARK...AND PEORIA. AT 240 PM NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS EAST AND SOUTH OF ALL THESE COUNTIES AND THE LINE WAS MOVING EAST AT AROUND 30 MPH. THE LINE EXTENDED FROM ABOUT 50 NORTH OF CHAMPAIGN TO JUST& NORTH OF SPRINGFIELD TO THE MISSISSIPPI BETWEEN QUINCY AND SAINT LOUIS. MACH ATTN: ISP DIST 14...7...8...6...9...AND 20
Special weather statement, Sep 19, 2:53 PM CDT, 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 245 PM CDT FRI SEP 19 1986 ...PARTIAL CANCELLATION OF SEVERE THUNDERSTORM WATCH... THE NATIONAL WEATHER SERVICE AT PEORIA HAS CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 511 IN THIS PART OF CENTRAL ILLINOIS. COUNTIES WHERE THE WATCH IS NO LONGER IN EFFECT INCLUDE... SCHUYLER...MARSHALL...WOODFORD...TAZEWELL...MASON...AND MCLEAN. ALSO HENDERSON...WARREN...KNOX...HANCOCK...MCDONOUGH...FULTON... STARK...AND PEORIA. AT 240 PM NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS EAST AND SOUTH OF ALL THESE COUNTIES AND THE LINE WAS MOVING EAST AT AROUND 30 MPH. THE LINE EXTENDED FROM ABOUT 50 MILES NORTH OF CHAMPAI GN TO JUST NORTH OF SPRINGFIELD TO THE MISSISSIPPI BETWEEN QUINCY AND SAINT LOUIS. MACH ATTN: ISP DIST 14...7...8...6...9...AND 20
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 2:03 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 57 min |
| Sep 19, 3:06 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Piatt | 54 min |
| Sep 19, 3:17 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 58 min |
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.