Alert archive / Missouri / Tornado Warnings in 1986

Tornado Warning 3, NWS St. Louis, MO

August 5, 1986Shelby County, Missouri

NWS St. Louis, MO issued this tornado warning at Aug 5, 1986, 6:55 PM CDT for Shelby County, Missouri. It was in force for 35 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
Aug 5, 1986, 6:55 PM CDT (23:55 UTC)
Expired
Aug 5, 1986, 7:30 PM CDT
In force
35 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Shelby 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
Aug 5, 7:10 PM CDTTornado F1Shelby, 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, 11.9 hours before the alert went out and 232 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 1986-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 1986-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1190 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
177 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 052358
TORSTL
MOC205-060030-

BULLETIN - EBS ACTIVATION AND IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
655 PM CDT TUE AUG 5 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE
UNTIL 730 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SHELBY IN
NORTHEASTERN MISSOURI.

AT 655 PM CDT...A TORNADO WAS LOCATED NEAR CLARENCE...20 MILES EAST OF
MACON MISSOURI.

THIS STORM IS MOVING TO THE EAST AT 25 MPH.


<

PERSONS IN THE PATH OF THIS STORM SHOULD GO TO A SAFE PLACE...SUCH AS
A BASEMENT OR INTERIOR ROOM ON THE GROUND FLOOR OF A BUILDING.
STAY AWAY FROM WINDOWS AND OUT OF YOUR CAR.  PLEASE REPORT SEVERE
WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER
SERVICE.

WORK

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.