Alert archive / Missouri / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 79, NWS Kansas City, MO

July 21, 19904 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 21, 1990, 6:16 PM CDT for 4 counties in Missouri. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jul 21, 1990, 6:16 PM CDT (23:16 UTC)
Expired
Jul 21, 1990, 7:15 PM CDT
In force
59 min
Issued by
NWS Kansas City, MO
Area
Whole counties

Counties Boone County, MO, Cole County, MO, Cooper County, MO, Moniteau 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, 11.3 hours before the alert went out and 235 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 12:00Z on 1990-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 605 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 12:00Z on 1990-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -69 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
605 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1219 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-69 m²/s²
0-3 km storm-relative helicity
-37 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 KCOU 212320 COR
SVRCOU
MOC019-125-051-053-135-220015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION
NATIONAL WEATHER SERVICE COLUMBIA MO
616 PM CDT SAT JUL 21 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES

   IN THE CENTRAL PART OF MISSOURI
      SOUTHERN BOONE...NORTHERN MILLER...COLE...EASTERN
      COOPER...MONITEAU

AT 610PM...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM 25 MILES
WEST OF COLUMBIA TO 30 MILES SOUTHWEST OF JEFFERSON CITY AND
MOVING EAST AT 35 MPH.  HEAVY RAIN...DANGEROUS LIGHTNING...HAIL
AND DAMAGING WIND ARE MAY BE EXPECTED FROM THESE STORMS AS THEY
MOVE THORUGH CALIFORNIA AND ELDON BETWEEN 615 AND 630PM AND THEN
THROUGH ASHLAND...JEFFERSON CITY AND META BY 7PM.

 SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO
 WARNING.  REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING CONDITIONS.

 LARM


The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 7:34 PM CDTSevere Thunderstorm WarningEAXPettis41 min
Jul 21, 6:16 PM CDTSevere Thunderstorm WarningEAXMaries59 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1990Every severe thunderstorm warning 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.