Alert archive / Missouri / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 27, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 10, 1986, 2:23 AM CDT for Knox County, Shelby County, Missouri. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1986, 2:23 AM CDT (07:23 UTC)
- Expired
- Jul 10, 1986, 3:30 AM CDT
- In force
- 67 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Knox County, MO, Shelby County, MO
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, 7.4 hours before the alert went out and 227 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
- 685 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 887 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAAOO KSTL 100723
SVRSTL
MOC103-205-100830-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
223 AM CDT THU JUL 10 1986
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 330 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
IN NORTHEAST MISSOURI
..SOUTH KNOX AND EXTREME NORTH SHELBY
AT 225AM NATIONAL WEATHER SERVICE INDICATED A SEVERE THUNDERSTORM
SOUTHWEST OF EDINA. THIS STORM IS LIKELY PRODUCING DAMAGING WINDS OR
HAIL AS IT MOVES EAST AT 35 MILES AN HOUR.
IT WILL MOVE ACROSS SOUTHERN KNOX AND EXTREME NORTH SHELBY COUNTIES
BETWEEN 225 AND 315 AM THIS MORNING.
WHEN THUNDERSTORMS ARE OCCURRING, PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
FELDTWhat 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
Local storm report, Jul 9, 9:00 PM CDT, 5 hours 23 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
845 PM CDT WED JUL 9 1986
..............ATTENTION SELS............
TIME EVENT
8-830 PM CDT...FLOODING IN SALEM IL. SOME STREETS BLOCKED DUE TO HIGH
WATER.
LATE REPORT AT SALEM..TREES DOWN..POWER LINES DOWN OCCURRED
BETWEEN 615-630 PM.
6-8 PM CDT...LATE REPORT FOR CLINTON COUNTY ILLINOIS..RECEIVED FROM WILY
RADIO IN CENTRALIA..WIND DAMAGE BETWEEN 6-630 PM..TREES DOWN
AND POWER LINES DOWN IN NEW BADEN..TRENTON AND CARLYLE. FLASH
FLOODING IN TOWNS AND THROUGHOUT THE COUNTY. STREETS AND
SMALL STREAMS FLOODED AND SOME COUNTY ROADS.
HAMILTON/DYE RLocal storm report, Jul 9, 10:04 PM CDT, 4 hours 19 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
945 PM CDT WED JUL 9 1986
..............ATTENTION SELS............
TIME EVENT
330-4 PM CDT...LATE REPORT FROM NORTHEAST RANDOLPFH COUNTY TOWARD
WASHINGTON COUNTY..1.5 INCH RAINFALL IN 30 MINUTES WITH SMALL
HAIL. LOST METAL ROOF ON BARN AND BLEW DOWN LEAN/TO SHED.
MANY TREES DAMAGED.
DYERSpecial weather statement, Jul 9, 10:42 PM CDT, 3 hours 41 minutes before
RADAR SUMMARY NATIONAL WEATHER SERVICE ST LOUIS MO 1035 PM CDT WED JUL 9 1986 ...A FLASH FLOOD WATCH IS IN EFFECT FOR PORTIONS OF SOUTHERN ILLINOIS FOR TONIGHT... AT 1025 PM CDT..ISOLATED THUNDERSTORMS..SOME WITH VERY HEAVY RAINS.. WERE OCCURRING OVER CENTRAL ILLINOIS NEAR GREENVILLE. THESE STORMS HAVE PRODUCED VERY HEAVY RAINS AND STRONG GUSTY WINDS. REPORTS RECEIVED INDICATE THAT POWER LINES ARE DOWN IN THE GREENVILLE AREA ALONG WITH TREE DAMAGE. MOVEMENT OF THE STORMS WAS TO THE EAST AT 15 MILES AN HOUR. ELSEWHERE..SCATTERED THUNDERSTORMS AND RAINSHOWERS CONTINUED OVER PORTIONS OF SOUTHERN AND SOUTHWEST ILLINOIS AND SOUTHEAST MISSOURI. THE HEAVIER STORMS WERE] LOCATED OVER ILLINOIS JUST NORTH OF JERSEYVILLE AND OVER MISSOURI NEAR FLAT RIVER AND PERRYVILLE. THESE STORMS AND SHOWERS WERE MOVING TO THE SOUTHEAST AT 15 MILES AN HOUR. DS.
Special weather statement, Jul 9, 10:43 PM CDT, 3 hours 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ST LOUIS MO 1035 PM CDT WED JUL 9 1986 ...A FLASH FLOOD WATCH IS IN EFFECT FOR PORTIONS OF SOUTHERN ILLINOIS FOR TONIGHT... AT 1025 PM CDT..ISOLATED THUNDERSTORMS..SOME WITH VERY HEAVY RAINS.. WERE OCCURRING OVER CENTRAL ILLINOIS NEAR GREENVILLE. THESE STORMS HAVE PRODUCED VERY HEAVY RAINS AND STRONG GUSTY WINDS. REPORTS RECEIVED INDICATE THAT POWER LINES ARE DOWN IN THE GREENVILLE AREA ALONG WITH TREE DAMAGE. MOVEMENT OF THE STORMS WAS TO THE EAST AT 15 MILES AN HOUR. ELSEWHERE..SCATTERED THUNDERSTORMS AND RAINSHOWERS CONTINUED OVER PORTIONS OF SOUTHERN AND SOUTHWEST ILLINOIS AND SOUTHEAST MISSOU^RI. THE HEAVIER STORMS WERE LOCATED OVER ILLINOIS JUST NORTH OF JERSEYVILLE AND OVER MISSOURI NEAR FLAT RIVER AND PERRYVILLE. THESE STORMS AND SHOWERS WERE MOVING TO THE SOUTHEAST AT 15 MILES AN HOUR. DS.
Special weather statement, Jul 10, 12:30 AM CDT, 1 hour 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1230 AM CDT THU JUL 10 1986 ... STRONG THUNDERSTORMS MOVING INTO NORTHEAST MISSOURI ... SEVERAL VERY HEAVY THUNDERSTORMS HAVE MOVED OUT OF NEBRASKA..AND WERE MOVING ACROSS NORTHERN MISSOURI. AT 1230 AM CDT THIS THURSDAY MORNING THE STRONGEST STORMS WERE LOCATED ABOUT 30 MILES WEST OF KIRKSVILLE. THESE STORMS WERE MOVING EAST AROUND 40 MILES AN HOUR AND WILL MOVE INTO PORTIONS OF ADAIR AND MACON COUNTIES BETWEEN 135 AND 215AM. HEAVY RAIN...STRONG GUSTY WINDS..AND FREQUENT LIGHTNING..CAN BE EXPECTED WITH THE STRONGER OF THESE STORMS. IF THE CURRENT MOVEMENT CONTINUES..THEY SHOULD MOVE FAIRLY CLOSE TO KIRKSVILLE. FELDT
Nearby
Severe Thunderstorm Warnings in Missouri, 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.