Alert archive / Missouri / Tornado Warnings in 1986

Tornado Warning 1, NWS St. Louis, MO

May 13, 1986Dent County, Missouri

NWS St. Louis, MO issued this tornado warning at May 13, 1986, 9:18 PM CDT for Dent County, Missouri. It was in force for 42 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
May 13, 1986, 9:18 PM CDT (02:18 UTC)
Expired
May 13, 1986, 10:00 PM CDT
In force
42 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Dent 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
May 13, 9:25 PM CDTTornado F0Dent, 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

Springfield, MO (KUMN), launched 00:00Z, 2.3 hours before the alert went out and 218 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, Springfield, MO at 00:00Z on 1986-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1322 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, Springfield, MO at 00:00Z on 1986-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939587897Sfc1 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
1322 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1372 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 140219
TORSTL
MOC065-140300-

BULLETIN - EBS ACTIVATION AND IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
918 PM CDT TUE MAY 13 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE
UNTIL 10 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF
SOUTH CENTRAL MISSOURI...

DENT

AT 915 PM CDT..RADAR INDICATED A POSSIBLE TORNADO NEAR SALEM.  THE
THUNDERSTORM WAS MOVING TO THE EAST SOUTHEAST AT 30 MPH.  PERSO$NS
JUST SOUTH AND EAST OF SALEM MISSOURI IN DENT COUNTY SHOULD TAKE
SHELTER NOW.  THE STORM WILL LIKELY MOVE EAST SOUTHEAST ALONG AND
JUST SOUTH OF ROUTE 32.

MCCARTHY

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 13, 7:58 PM CDTSevere Thunderstorm WarningLSXPhelps47 min
May 13, 8:39 PM CDTSevere Thunderstorm WarningLSXCrawford, Dent36 min

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.