Alert archive / Missouri / Tornado Warnings in 1990

Tornado Warning 18, NWS Kansas City, MO

November 27, 1990Boone County, Missouri

NWS Kansas City, MO issued this tornado warning at Nov 27, 1990, 11:25 AM CST for Boone County, Missouri. It was in force for 35 min.

The area

The counties it named.

The facts

Issued: Nov 27, 1990, 11:25 AM CST (17:25 UTC)
Expired: Nov 27, 1990, 12:00 PM CST
In force: 35 min
Issued by: NWS Kansas City, MO
Area: Whole counties

County Boone 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

Springfield, MO (KUMN), launched 12:00Z, 5.4 hours before the alert went out and 267 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 623 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 267 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCOU 271725 RRA
TORCOU
MOC019-271800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE COLUMBIA MO
1125 AM CST TUE NOV 27 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 1200 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE CENTRAL PART OF MISSOURI
      NORTHERN BOONE...CITY OF COLUMBIA

AT 1120AM...STRUCTURAL DAMAGE FROM A POSSIBLE TORNADO WAS REPORTED
AT CROSSROADS WEST SHOPPING CENTER IN WESTERN COLUMBIA.  A FUNNEL
CLOUD WAS ALSO REPORTED NEAR ROCKBRIDGE ELEMENTARY SCHOOL IN THE
SOUTHWEST PART OF THE CITY.

TAKE SHELTER IN A BASEMENT OR INTERIOR ROOM OR CLOSET ON THE LOWEST
FLOOR AND AWAY FROM WINDOWS.

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 27, 6:27 AM CST	Severe Thunderstorm Warning	EAX	Callaway	48 min
Nov 27, 10:16 AM CST	Tornado Warning	EAX	Benton, Cooper, Morgan	29 min
Nov 27, 10:49 AM CST	Severe Thunderstorm Warning	EAX	Cooper, Howard	41 min
Nov 27, 11:13 AM CST	Severe Thunderstorm Warning	EAX	Boone	47 min
Nov 27, 11:43 AM CST	Severe Thunderstorm Warning	EAX	Audrain, Callaway	47 min

Nearby

Tornado Warnings in Missouri, 1990 Every tornado warning in 1990 Tornadoes in 1990

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.