Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 12, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 6, 1986, 2:05 PM CDT for Adams County, Illinois. It was in force for 25 min.
The area
The counties it named.
The facts
- Issued
- May 6, 1986, 2:05 PM CDT (19:05 UTC)
- Expired
- May 6, 1986, 2:30 PM CDT
- In force
- 25 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Adams 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 12:00Z, 7.1 hours before the alert went out and 154 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
- 1430 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 814 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- -76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -5.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 061910 COR SVRSTL ILC001-061930- BULLETIN...IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTION FOR EXPIRATION TIME NATIONAL WEATHER SERVICE ST LOUIS MO 205 PM CDT TUE MAY 6 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST CENTRAL ILLINOIS... NORTHERN ADAMS. AT 200 PM CDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 10 MILES NORTH OF QUINCY ILLINOIS..MOVING EAST AT 35 MPH. THE STORM DROPPED ONE INCH DIAMETER HAIL AT URSA ILLINOIS..TEN MILES NORTH OF QUINCY JUST BEFORE 2 PM. REMEMBER A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH..LARGE HAIL..DEADLY LIGHTNHING..AND HEAVY RAIN THAT CAN QUICKLY FLOOD LOW LYING AREAS. PLEASE REPORT ANY SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE. MCCARTHY
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 6, 10:24 AM CDT, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 1022 AM CDT TUE MAY 6 1986 ...VERY STRONG THUNDERSTORMS MOVING INTO NORTH CENTRAL MISSOURI... AT 1015 AM THE LEADING EDGE OF AN AREA OF SCATTERED VERY STRONG THUNDERSTORMS WAS LOCATED FROM JUST WEST OF KIRKSVILLE TO 25 MILES NORTHWEST OF MACON TO 35 MILES NORTH OF MARSHALL. THE MOST INTENSE STORM WAS LOCATED 40 MILES NORTH OF MARSHALL..OR ABOUT 70 MILES NORTHWEST OF COLUMBIA. THIS STORM CONTAINS SMALL HAIL.. GUSTY WINDS AND HEAVY RAIN. THE STORMS WERE MOVING EAST AT 40 MILES AN HOUR. RESIDENTS OF NORTH CENTRAL MISSOURI SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND REPORT ANY SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. HAGEMEYER
Special weather statement, May 6, 11:05 AM CDT, 3 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1100 AM CDT TUE MAY 6 1986 WEATHER SERVICE RADARS INDICATES INTENSE THUNDERSTORMS IN NORTHEAST MISSOURI AT 11AM THIS MORNING. A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR LINN COUNTY IN NORTH CENTRAL MISSOURI UNTIL 1130 AM. A LINE OF INTENSE THUNDERSTORMS EXTENDED FROM NEAR LANCASTER MO..25 MILES NORTH OF KIRKSVILLE MO TO NEAR BROOKFIELD MO. THESE STORMS WERE MOVING TO T+HE EAST NORTHEAST AT 40 MPH. BROOKFIELD MO REPORTED MARBEL SIZE HAIL AT 11AM THIS MORNING. THESE STORMS WILL MOVE THROUGH NORTHEAST MISSOURI BY 1PM THIS AFTERNOON. HEAVY RAIN..HAIL AND STRONG GUSTY WINDS WILL ACCOMPANY THE STORMS.
Special weather statement, May 6, 12:08 PM CDT, 1 hour 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1205 PM CDT TUE MAY 6 1986 AT NOON A VERY INTENSE THUNDERSTORM WAS OBSERVED 10 MILES SOUTHWEST OF KIRKSVILLE IN ADAIR COUNTY. THE STORM WAS MOVING TO THE NORTHEAST AT 35 MPH. SEVERAL REPORTS OF MARBLE SIZE HAIL WERE REPORTED IN LINN COUNTY AROUND 1140 AM CDT. THIS STORM IS EXPECTED TO MOVE INTO KNOX COUNTY AROUND 1230 PM. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT FOR THE gPOSSIBILITY OF SEVERE WEATHER WITH THESE STORMS. BW
Local storm report, May 6, 1:06 PM CDT, 59 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA MO
105 PM CDT TUE MAY 6 1986
TIME REPORT
1100 AM CDT 3/4 INCH HAIL AT BROOKFIELD IN LINN COUNTY.
1210 PM CDT GOLFBALL SIZE HAIL AT ATLANTA IN MACON
COUNTY. WINDOWS BROKEN AND ROOFS DAMAGED.
1230 PM CDT GOLFBALL SIZE HAIL AT NICKELLTON IN NORTHEAST
MACON COUNTY.The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 1:10 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 50 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.