Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 47, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 10, 1986, 8:17 PM CDT for Sangamon County, Illinois. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1986, 8:17 PM CDT (01:17 UTC)
- Expired
- Jul 10, 1986, 9:15 PM CDT
- In force
- 58 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Sangamon 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, 1.3 hours before the alert went out and 139 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
- 933 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 1223 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 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 110124 COR SVRSPI ILC167-110215- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTION NATIONAL WEATHER SERVICE SPRINGFIELD IL 817 PM CDT THU JUL 10 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF CENTRAL ILLINOIS...SANGAMON AT 814 PM CDT A SEVERE THUNDERSTORMS WAS INDICATED BY RADAR JUST NORTH AND WEST OF SPRINGFIELD ILLINOIS. THESE SEVERE THUNDERSTORMS WERE MOVING EAST AT 30 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 THREATFENING 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 SERVICE. ATTN ISP DIST..9 HILLIARD
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 10, 4:44 PM CDT, 3 hours 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 435 PM CDT THU JUL 10 1986 .....THUNDERSTORMS IN CENTRAL ILLINOIS... AT 430PM A LINE OF THUNDERSTORMS EXTENDED FROM LA SALLE COUNTY TO ADAMS COUNTIES IN ILLINOIS. THE STRONG THUNDERSTORMS WERE LOCATED ABOUT 20 MILES NORTH OF PEORIA...20 MILES WEST OF PEORIA IN THE FARMINGTON AREA...ANOTHER 25 SOUTHWEST OF PEORIA FROM CANTON TO TO 5 MILES NORTH OF RUSHVILLE. AT 435 MARBLE SIZE HAIL WAS REPORTED AT VERMONT IN FULTON CO. AND AT PRINCEVILLE IN NORTHERN PEORIA CO. BY 530 PM THE LINE OF THUNDERSTORMS WILL EXTEND FROM AROUND JOLIET TO 10 MILES SOUTH OF PEORIA TO QUINCY ILLINOIS. THESE THUNDERSTORMS WERE MOVING TO THE EAST AT AB?OUT 30 MPH. GEER
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:35 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 55 min |
| Jul 10, 7:57 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 63 min |
| Jul 10, 7:57 PM CDT | Severe Thunderstorm Warning | ILX | Menard | 63 min |
| Jul 10, 8:01 PM CDT | Severe Thunderstorm Warning | ILX | Piatt | 59 min |
| Jul 10, 8:09 PM CDT | Tornado Warning | ILX | DeWitt, Piatt | 21 min |
| Jul 10, 8:45 PM CDT | Tornado Warning | ILX | Champaign | 30 min |
| Jul 10, 8:55 PM CDT | Tornado Warning | ILX | Macon | 35 min |
| Jul 10, 9:05 PM CDT | Tornado Warning | ILX | Douglas, Edgar, Vermilion | 25 min |
| Jul 10, 9:50 PM CDT | Tornado Warning | ILX | Champaign | 25 min |
| Jul 11, 2:59 PM CDT | Severe Thunderstorm Warning | ILX | Edgar, Vermilion | 61 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.