Alert archive / Illinois / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 23, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 1, 1986, 4:55 PM CDT for Washington County, Illinois. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Jul 1, 1986, 4:55 PM CDT (21:55 UTC)
- Expired
- Jul 1, 1986, 5:30 PM CDT
- In force
- 35 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Washington 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 12:00Z, 9.9 hours before the alert went out and 55 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
- 1991 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTL 012155
SVRSTL
ILC189-012230-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
455 PM CDT TUE JUL 1 1986
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
IN SOUTH CENTRAL ILLINOIS
..EASTERN WASHINGTON
AT 450 PM CDT A FUNNEL CLOUD WAS SITED NEAR 2 MILES WEST OF NASHVILLE
ILLINOIS...MOVING TO THE NORTHEAST AT 20 MPH.
A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER..SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
HAMILTON/BROWNINGWhat 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 1, 1:47 PM CDT, 3 hours 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 145 PM CDT TUE JUL 1 1986 ...THUNDERSTORMS WITH VERY HEAVY RAIN MOVING ACROSS CENTRAL MISSOURI... AT 140 PM CDT THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED ACROSS CENTRAL MISSOURI EAST OF A LINE FROM THE MOBERLY AREA TO COLUMBIA TO 60 MILES SOUTH OF COLUMBIA. THE HEAVIEST RAINFALL WAS REPORTED JUST NORTH AND EAST OF COLUMBIA AND SOME FLOODING OF STREET INTERSECTIONS AND MINOR UBRAN FLOODING WAS REPORTED IN COLUMBIA AT 135 PM. OTHER THUNDERSTORMS WITH HEAVY RAIN WERE LOCATED IN SOUTH CENTRAL MISSOURI 30 MILES SOUTH OF JEFFERSON CITY NEAR IBERIA. THE THUNDERSTORMS WERE MOVING EAST AT 20 MPH. AT 140 PM THE HEAVIER RAIN WAS MOVING OUT OF THE COLUMBIA AREA. RESIDENTS OF ABOUT THE EASTERN HALF OF CENTRAL MISSOURI CAN EXPECT PERIODS OF THUNDERSTORMS WITH HEAVY RAIN THE REST OF THIS AFTERNOON AND EARLY THIS EVENING. SOME OF THE THUNDERSTORMS MAY REACH SEVERE LIMITS OVER EAST CENTRAL MISSOURI. MOTORISTS SHOULD EXERCISE CAUTION UPON ENCOUNTERING THE HEAVIER SHOWERS. HAGEMEYER
Special weather statement, Jul 1, 2:46 PM CDT, 2 hours 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
240 PM CDT TUE JUL 1 1986
...SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL MISSOURI UNTIL 9PM...
...THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUE OVER CENTRAL MISSOURI...
AT 236 PM CDT THUNDERSTORMS WITH VERY HEAVY RAIN WERE OCCURRING IN
EAST CENTRAL MISSOURI IN THE OWENSVILLE AREA OR ABOUT 40 MILES
SOUTHEAST OF JEFFERSON CITY AND IN A NARROW BAND FROM JUST NORTHWEST
OF COLUMBIA TO CENTRALIA. HEAVY RAIN WAS ALSO FALLING BETWEEN
MEXICO AND MONTGOMERY CITY. THESE HEAVY SHOWERS WILL CAUSE SOME
LOCALIZED FLOODING OF URBAN DRAINAGE AREAS..INTERSECTIONS..LOW LYING
AREAS AND LOW SPOTS IN ROADWAYS. MOTORISTS SHOULD EXERCISE CAUTION.
THE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 30 MPH. NO SEVERE
HAS BEEN REPORTED OR IS INDICATED ON RADAR IN CENTRAL MISSOURI.
THE CITY OF COLUMBIA IS IN STORE FOR ANOTHER BRIEF PERIOD OF
HEAVY RAIN. THESE STORMS WERE AHEAD OF A COLD FRONT MOVHING INTO WEST
CENTRAL MISSOURI AND THE HEAVY RAIN SHOULD MOVE OUT OF CENTRAL MISSOURI
EARLY THIS EVENING. THE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT
30 MPH.
HAGEMEYERSpecial weather statement, Jul 1, 3:10 PM CDT, 1 hour 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 310 PM CDT TUE JUL 1 1985 SEVERE THUNDERSTORM WATCH NO 325 CONTINUES IN EFFECT UNTIL 9 PM FOR EAST CENTRAL MISSOURI AND SOUTH ILLINOIS. AT 310 PM NUMEROUS THUNDERSTORMS WERE OCCURING IN EAST MISSOURI. STORMS WITH VERY HEAVY RAIN WERE LOCATED ABOUT 60 MILES NORTHWEST OF ST LOUIS CITY IN PIKE AND LINCOLN COUNTIES OF MISSOURI ALSO IN WASHINGTON COUNTY ABOUT 50 MILES SOUTHWEST OF ST LOUIS CITY. ONE TO TWO INCHES OF RAIN IS EXPECTED WITH THESE STORMS WITH URBAN AND SMALL STREAM FLOODING IN PIKE..LINCOLN..WASHINGTON AND JEFFERSON COUNTIES OF MISSOURI BETWEEN 3 AND 5 PM. NO REPORTS OF SEVERE WEATHER HAS BEEN RECEIVED BU`T PERSONS IN EAST CENTRAL MISSOURI AND SOUTH ILLINOIS SHOULD REMAIN ALERT FOR LARGE HAIL.. DAMAGING WIND AND LOCAL FLOODING WHICH CAN DEVELOP QUICKLY.
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 1:41 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 34 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.