Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 28, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at May 8, 1986, 8:38 PM CDT for Sangamon County, Illinois. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- May 8, 1986, 8:38 PM CDT (01:38 UTC)
- Expired
- May 8, 1986, 9:45 PM CDT
- In force
- 67 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
Peoria Regional, IL (KPIA), launched 00:00Z, 1.6 hours before the alert went out and 102 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
- 613 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1863 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 82 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 090138 SVRSPI ILC167-090245- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPRINGFIELD IL 838 PM CDT THU MAY 8 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF CENTRAL ILLINOIS...SOUTHERN SANGAMON AT 830PM, A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 15 MPH SOUTH OF SPRINGFIELD ILLINOIS. STATE POLICE REPORTED ONE INCH HAIL AT CHATHAM AND NEW CITY. THE THUNDERSTORM WAS MOVEING EAST AT 10 MPH. REMEMBER..A SEVERE THUNDERSTORM PRODUCES DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING AND HEAVY RAINS THAT CAN QU3ICKLY 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 SERVICE. ATTN ISP DIST.. GOODSELL
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, May 8, 5:52 PM CDT, 2 hours 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 550 PM CDT WED MAY 7 1986 ...STRONG THUNDERSTORMS OVER CENTRAL ILLINOIS... AT 545 PM CDT RADAR INDICATED STRONG THUNDERSTORMS OVER CENTRAL ILLINOIS EXTENDING IN A 15 MILE WIDE BAND FROM 17 MILES NORTHWEST OF SPRINGFIELD ILLINOIS TO 20 MILES SOUTH OF SPRINGFIELD ILLINOIS. THE STRONGER THUNDERSTORMS IN THIS BAND ARE PRODUCING VERY HEAVY RAIN ..DANGEROUS LIGHTNING AND BRIEF STRONG GUSTY WINDS. THE BAND OF THUNDERSTORMS ARE MOVING EAST AT 10 MILES AN HOUR. HUGHES
Special weather statement, May 8, 6:28 PM CDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 625 PM CDT WED MAY 7 1986 ...STRONG THUNDERSTORMS OVER CENTRAL ILLINOIS... AT 620 PM CDT RADAR INDICATED STRONG THUNDERSTORMS OVER CENTRAL ILLINOIS EXTENDING IN A 15 MILE WIDE BAND FROM 15 MILES NORTHWEST OF SPRINGFIELD ILLINOIS TO 20 MILES SOUTH OF SPRINGFIELD ILLINOIS. THE STRONGEST THUNDERSTORM IN THIS BAND WAS LOCATED 10 MILES SOUTH OF SPRINGFIELD ILLINOIS..NEAR CHATHAM. AT 615 PM CDT THE PUBLIC REPORTED SMALL HAIL...BLINDING RAIN AND BRIEF GUSTY WINDS WITH THIS STORM. THE THUNDERSTORM WAS MOVING VERY SLOWLY EAST. LOCAL FLOODING IS LIKELY IN LOW LYING AREAS AND ALONG SMALL STREAMS WITH THIS THUNDERSTORM. HUGHES )
Special weather statement, May 8, 7:30 PM CDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 7 25 PM CDT THU MAY 8 1986 SOME VERY HEAVY THUNDERSTORMS WERE OCCURING OVER EXTREME WEST.. CENTRAL ILLINOIS NEAR THE MISSISSIPPI RIVER. A COUPLE OF THESE STORMS PRODUCED ONE HALF INCH HAIL AT BENTLY IN HANCOCK COUNTY AND ALSO AT DALLAS CITY AT THE SOUTHWEST TIP OF HENDERSON COUNTY. THIS IS ABOUT 70 MILES WEST AND WESTSOUTHWEST OF PEORIA. AT 7 20 A LARGE THUNDERSTORM WAS LOCATED ABOUT 10 MILES WEST OF ROSEVILLE WHICH IS ABOUT 25 MILES EAST OF BURLINGTON IOWA. THESE ISOLATED STORMS WILL LIKELY CONTINUE TO PRODUCE BRIEF SMALL HAIL AND HEAVY RAIN FOR THE NEXT HOUR OR TWO AS THEY DRIFT SLOWLY TO THE NORTH. RAY ATTN ISP DIST 14
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.