Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 17, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 13, 1986, 10:06 PM CDT for Monroe County, Randolph County, Illinois. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- May 13, 1986, 10:06 PM CDT (03:06 UTC)
- Expired
- May 13, 1986, 10:45 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Monroe County, IL, Randolph 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, 3.1 hours before the alert went out and 110 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
- 770 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1565 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 140306 SVRSTL ILC133-157-140345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAINT LOUIS MO 1006 PM CDT TUE MAY 13 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHWEST ILLINOIS...SOUTHERN MONROE AND NORTHERN RANDOLPH AT 950 PM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM IN SOUTHERN MANROE COUNTY ILLINOIS MOVING INTO NORTH RANDOLPH COUNTY. THIS STORM HAD THE POTENTIAL FOR LARGE HAIL. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE AT /314/922-9120. FELDT
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 13, 5:06 PM CDT, 5 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 505 PM CDT TUE MAY 13 1986 ...ISOLATED STRONG THUNDERSTORM NEAR COLUMBIA REGIONAL AIRPORT... AT 500 PM CDT AN ISOLATED STRONG THUNDERSTORM WITH SMALL HAIL..DANGEROUS LIGHTNING AND GUSTY WINDS WAS LOCATED JUST SOUTH OF THE COLUMBIA REGIONAL AIRPORT. MARBLE SIZE HAIL WAS REPORTED IN ASHLAND IN SOUTHERN BOONE COUNTY. THE THUNDERSTORM WAS MOVING EAST AT 30 MILES AN HOUR AND WILL BE aMOVING INTO THE FULTON AREA BY 540 PM. OTHER SCATTERED VERY STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER EAST CENTRAL MISSOURI THIS EVENING AS A COLD FRONT MOVES THROUGH CENTRAL MISSOURI. HAGEMEYER
Special weather statement, May 13, 6:19 PM CDT, 3 hours 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 615 PM CDT TUE MAY 13 1986 ...SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL MISSOURI UNTIL 11PM... AT 613 PM CDT AN ISOLATED INTENSE THUNDERSTORM WITH SMALL HAIL AND GUSTY WINDS WAS LOCATED JUST SOUTHEAST OF BAGNELL DAM OR 35 MILES SOUTHWEST OF JEFFERSON CITY MOVING EAST AT 30 MILES AN HOUR. THIS THUNDERSTORM HAS INTENSIFIED RAPIDLY AND PERSONS IN MILLER COUNTY OF SOUTH CENTRAL MISSOURI SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND REPORT ANY SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. OTHER SCATTERED INTENSE THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER SOUTH CENTRAL AND EAST CENTRAL MISSOURI THIS EVENING. HAGEMEYER
Special weather statement, May 13, 7:08 PM CDT, 2 hours 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
650 PM CDT TUE MAY 13 1986
.. THUNDERSTORM UPDATE .. EASTERN MISSOURI ..
SEVERE THUNDERSTORM WATCH SOUTH ILLINOIS UNTIL 9PM
SEVERE THUNDERSTORM WATCH SOUTHEAST MISSOURI UNTIL 11PM
THUNDERSTORMS HAVE INCREASED IN COVERAGE AND INTENSITY BETWEEN
630PM AND 700PM THIS EVENING. THUNDERSTORMS WERE SCATTERED IN A LINE
THAT EXTENDED THROUGH CENTRAL AND EAST MISSOURI FROM ABOUT 30 MILES
NORTH OF ST LOUIS TO NEAR TROY TO NEAR HERMANN AND THEN SOUTHWEST
TOWARDS THE LAKE OF THE OZARKS.
MOVEMENT WAS TOWARDS THE EAST AT 30 MILES AN HOUR. SHOWERS AND A FEW
THUNDERSTORMS WILL MOVE INTO WEST SECTIONS OF THE ST LOUIS
AREA INCLUDING ST CHARLES COUNTY BETWEEN 700 AND 730PM...AND INTO THE
REMAINDER OF THE METRO AREA BETWEEN 730 AND 800PM THIS EVENING.
.
AS THE STORMS MOVE INTO THE ST LOUIS AREA THERE WILL BE A CHANCE OF
HEAVY RAIN..GUSTY WINDS AND POSSIBLY SOME HAIL.
STATUS ON SEVERE THUNDERSTORM WATCH 157...
SEVERE THUNDERSTORM WATCH 157 HAS BEEN CANCELLED NORTHWEST OF A LINE
FROM FULTON TO CLARKSVILLE MISSOURI. IT REMAINS IN EFFECT FOR THE
ST LOUIS AREA.
FELDTSpecial weather statement, May 13, 7:40 PM CDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 737 PM CDT TUE MAY 13 1986 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 11 PM CDT... AT 735 PM CDT RADAR SHOWED VERY STRONG THUNDERSTORMS IN A LINE FROM JUST NORTHEAST OF ST. LOUIS..THROUGH THE ST. LOUIS METROPOLITAN AREA..EXTENDING SOUTHWEST ALONG INTERSTATE 44 TO JUST WEST OF ROLLA MISSOURI. TWO OF THE STRONGEST STORMS WERE JUST WEST OF ROLLA AND JUST WEST OF SALEM. OTHER STRONG STORMS WERE SCATTERED OVER SOUTHEAST MISSOURI..FROM NEAR SALEM TO JUST WEST OF CLEARWATER LAKE. THESE STORMS WILL LIKELY PRODUCE EXTREMELY HEAVY RAIN..STRONG.. GUSTY WINDS AND SOME HAIL AS THEY MOVE TO THE EAST AT 30 MPH. PEA SIZE HAIL WAS REPORTED IN FLORISSANT MISSOURI..A NORTHWEST SUBURB OF ST. LOUIS AT 730 PM. MCCARTHY
Special weather statement, May 13, 8:20 PM CDT, 1 hour 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 812 PM CDT TUE MAY 13 1986 ...SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 11 PM CDT... THUNDERSTORMS HAVE MOVED OUT OF CENTRAL MISSOURI. AT 812 PM THUNDERSTORMS WERE SOUTHEAST OF A LINE FROM 10 MILES SOUTHEAST OF HERMANN TO 10 MILE SOUTHEAST OF WAYNESVILLE MOVING EAST AT 30 MILES AN HOUR. THE INTENSE STORMS THAT MOVED THROUGH MILLER AND MARIES COUNTIES DID NOT HIT ANY HEAVILY POPULATED AREAS. REPORTS FROM THE DIXON AREA INDICATE THAT EXTREMELY HIGH STRAIGHT LINE WINDS FLATTENED AND OR TWISTED OFF NUMEROUS LARGE TREES TWO TO THREE FEET IN DIAMETER IN SOUTHERN MARIES COUNTY TO THE NORTH OF DIXON.# SKIES ARE EXPECTED TO CLEAR OVER ALL OF CENTRAL MISSOURI DURING THE NIGHT AND NO MORE THUNDERSTORMS ARE EXPECTED IN THE AREA. HAGEMEYER
Special weather statement, May 13, 8:24 PM CDT, 1 hour 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 812 PM CDT TUE MAY 13 1986 ...SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 11 PM CDT... THUNDERSTORMS HAVE MOVED OUT OF CENTRAL MISSOURI. AT 812 PM THUNDERSTORMS WERE SOUTHEAST OF A LINE FROM 10 MILES SOUTHEAST OF HERMANN TO 10 MILE SOUTHEAST OF WAYNESVILLE MOVING EAST AT 30 MILES AN HOUR. THE INTENSE STORMS THAT MOVED THROUGH MILLER AND MARIES COUNTIES DID NOT HIT ANY HEAVILY POPULATED AREAS. REPORTS FROM THE DIXON AREA INDICATE THAT EXTREMELY HIGH STRAIGHT LINE WINDS FLATTENED AND OR TWISTED OFF NUMEROUS LARGE TREES TWO TO THREE FEET IN DIAMETER IN SOUTHERN MARIES COUNTY TO THE NORTH OF DI'XON AT APPROXIMATELY 715PM CDT. SKIES ARE EXPECTED TO CLEAR OVER ALL OF CENTRAL MISSOURI DURING THE NIGHT AND NO MORE THUNDERSTORMS ARE EXPECTED IN THE AREA. HAGEMEYER
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 9:25 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 35 min |
| May 13, 9:25 PM CDT | Severe Thunderstorm Warning | LSX | Bond | 35 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.