Alert archive / Missouri / Tornado Warnings in 1986

Tornado Warning 4, NWS St. Louis, MO

September 22, 1986Adair County, Knox County, Missouri

NWS St. Louis, MO issued this tornado warning at Sep 22, 1986, 6:13 PM CDT for Adair County, Knox County, Missouri. It was in force for 57 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
Sep 22, 1986, 6:13 PM CDT (23:13 UTC)
Expired
Sep 22, 1986, 7:10 PM CDT
In force
57 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Adair County, MO, Knox County, MO

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

TimeReportWhereRemark
Sep 22, 6:30 PM CDTHail 1.75Adair, MO

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 12:00Z, 11.2 hours before the alert went out and 242 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.

Skew-T log-pSkew-T log-p diagram, Peoria Regional, IL at 12:00Z on 1986-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1725 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peoria Regional, IL at 12:00Z on 1986-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1725 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 222313
TORSTL
MOC001-103-230010-
 
BULLETIN - EBS ACTIVATION AND IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
613 PM CDT MON SEP 22 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 710 PM CDT FOR THE FOLLOWING COUNTIES OF
 
NORTHEAST MISSOURI... EAST ADAIR... KNOX



CHANNEL 3 IN KIRKSVILLE MISSOURI REPORTED A FUNNEL CLOUD WITH A
SEVERE THUNDERSTORM 3 MILES NORTHEAST OF KIRKSVILLE AT 605 PM CDT.
THE STORM IS MOVING TO THE EAST AT 25 TO 30 MPH.
 
IF YOU ARE IN THE PATH OF THIS STORM...GO INDOORS TO THE BASEMENT
OR LOWEST FLOOR AND STAY AWAY FROM WINDOWS AND DOORS.  PROTECT YOUR
HEAD AND CHEST.  TRY TO HAVE AS MANY WALLS <BETWEEN YOURSELF
AND THE STORM AS POSSIBLE.
 
REH

Nearby

Tornado Warnings in Missouri, 1986Every tornado warning in 1986Tornadoes 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.