Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 34, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jun 14, 1986, 7:14 PM CDT for Menard County, Illinois. It was in force for 61 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
- Jun 14, 1986, 7:14 PM CDT (00:14 UTC)
- Expired
- Jun 14, 1986, 8:15 PM CDT
- In force
- 61 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Menard County, IL
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 |
|---|---|---|---|
| Jun 14, 7:40 PM CDT | Thunderstorm Wind 70 | Menard, IL |
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
Peoria Regional, IL (KPIA), launched 00:00Z, 0.2 hours before the alert went out and 74 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
- 636 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 771 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSPI 150014 SVRSPI ILC129-150115- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPRINGFIELD IL 714 PM CDT SAT JUN 14 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF CENTRAL ILLINOIS...MENARD AT 710 PM CDT WEATHER SERVICE RADAR INDICATES A SEVERE THUNDERSTORM IN NORTHWEST MENARD COUNTY 28 MILES NORTHWEST OF SPRINGFIELD ILLINOIS. THIS SEVERE THUNDERSTORM WAS MOVING TOWARD EAST SOUTHEAST AT 25 MPH. REMEMBER..A SEVERE THUNDERSTORM PRODUCES DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING AND HEAVY RAINS THAT CAN kQUICKLY 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..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, Jun 14, 5:45 PM CDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 545 PM CDT SAT JUN 14 1986 ...VERY STRONG THUNDERSTORMS IN WEST-CENTRAL AND SOUTHWEST ILLINOIS... AT 540 PM CDT WEATHER SERVICE RADARS SHOWS AN AREA OF SHOWERS AND THUNDERSTORMS WEST OF A LINE FROM JUST NORTH OF ST. LOUIS MISSOURI TO JUST WEST OF PEORIA ILLINOIS. THE STRONGEST THUNDERSTORMS WERE LOCATED JUST SOUTHWEST OF MACOMB ILLINOIS IN MC DONOUGH COUNTY AND IN NORTHERN CALHOUN COUNTY. THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAINS..STRONG GUSTY WINDS ..AND HAIL. THE AREA OF SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 20 TO 25 MPH. NO SEVERE WEATHER HAS BEEN REPORTED TO THE WEATHER SERVICE OFFICE IN SPRINGFIEL>D DURING THE PAST HOUR. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE WEST-CENTRAL ILLINOIS COUNTIES OF..SANGAMON..CASS..MORGAN AND MACOUPIN UNTIL 10 PM CDT THIS SATURDAY EVENING. HILLIARD
Special weather statement, Jun 14, 5:57 PM CDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 550 PM CDT SAT JUN 14 1986 ...HEAVY THUNDERSTORMS IN WEST CENTRAL ILLINOIS... AT 5 45PM A AREA OF HEAVY THUNDERSTORMS WERE LOCATED IN WEST CENTRAL ILLINOIS...FROM MACOMB TO VERMONT TO RUSHVILLE OR ABOUT 50 MILES SOUTHWEST OF PEORIA ILLINOIS. HEAVY RAIN AND SOME PEA SIZE AND OCCASIONAL MARBLE SIZE HAIL WITH WINDS GUST TO ABOUT 30 MPH. THESE STORMS WERE MOVING TO THE EAST AT ABOUT 2I0 MPH...AND WILL BE MOVING INTO SOUTHERN FULTON AND MASON COUNTIES WITHIN THE NEXT HOUR. GEER
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.