Alert archive / Missouri / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 84, NWS Kansas City, MO

September 9, 19904 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Sep 9, 1990, 4:49 PM CDT for 4 counties in Missouri. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Sep 9, 1990, 4:49 PM CDT (21:49 UTC)
Expired
Sep 9, 1990, 5:30 PM CDT
In force
41 min
Issued by
NWS Kansas City, MO
Area
Whole counties

Counties Maries County, MO, Miller County, MO, Moniteau County, MO, Pulaski 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, 9.8 hours before the alert went out and 197 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 1990-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1504 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 1990-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
1504 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1211 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
112 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 092149
SVRCOU
MOC169-125-131-135-092230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE COLUMBIA MO
449 PM CDT SUN SEP 9 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE CENTRAL PART OF MISSOURI
      NORTHERN PULASKI...WESTERN MARIES...MILLER...SOUTHERN 
      MONITEAU

AT 445PM...SEVERE THUNDERSTORMS CONTINUED OVER MILLER COUNTY FROM
20 MILES SOUTH OF JEFFERSON CITY NEAR TUSCUMBIA TO 20 MILES WEST
OF ROLLA NEAR CROCKER AND DIXON.  ADDITIONALLY...A SEVERE THUNDER-
STORM WAS DEVELOPING IN SOUTHERN MONITEAU COUNTY NEAR HIGH POINT
OR ABOUT 15 MILES WEST OF JEFFERSON CITY.  THESE THUNDERSTORMS
WERE MOVING VERY LITTLE OR SLOWLY TO THE SOUTHEAST.  THERE HAVE
BEEN REPORTS OF HAIL AND STRONG WINDS ALONG WITH VERY HEAVY RAIN.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNI#NG...AND VERY HEAVY RAIN THAT MAY CAUSE FLOODING.

 GOLF BALL SIZE OR LARGER HAIL IS POSSIBLE FROM THESE STORMS.
 SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOS WITHOUT WARNING.

 LARM

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 4:01 PM CDTSevere Thunderstorm WarningEAXMaries, Miller, Pulaski44 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.