Alert archive / Missouri / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 21, NWS Kansas City, MO

May 25, 1990Johnson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 25, 1990, 6:31 PM CDT for Johnson County, Missouri. It was in force for 44 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 25, 1990, 6:31 PM CDT (23:31 UTC)
Expired
May 25, 1990, 7:15 PM CDT
In force
44 min
Issued by
NWS Kansas City, MO
Area
Whole counties

County Johnson 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 25, 6:43 PM CDTHail 1.75Johnson, 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

Topeka, KS (KTOP), launched 12:00Z, 11.5 hours before the alert went out and 161 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, Topeka, KS at 12:00Z on 1990-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1426 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, Topeka, KS at 12:00Z on 1990-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 208 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
1426 J/kg
Mixed-layer CIN
-297 J/kg
Mixed-layer LCL
743 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
208 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMCI 252331
SVRMCI
MOC101-260015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE KANSAS CITY INT'L AIRPORT MO
631 PM CDT FRI MAY 25 1990

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

   IN THE WEST CENTRAL PART OF MISSOURI
      SOUTHERN JOHNSON

AT 620 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTH
OF HOLDEN...WHICH IS IN THE SOUTHWEST PART OF JOHNSON COUNTY
MISSOURI.  THE STORM WAS MOVING TOWARD THE EAST AT 15 TO 20 MPH.

IF YOU ARE IN AN AREA THREATENED BY THE STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...AND VERY HEAVY
RAIN.

 LTH/MT

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 6:53 PM CDTSevere Thunderstorm WarningEAXBenton, Pettis37 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.