Alert archive / Missouri / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 78, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Jul 20, 1990, 7:34 PM CDT for Pettis County, Missouri. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1990, 7:34 PM CDT (00:34 UTC)
- Expired
- Jul 20, 1990, 8:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Kansas City, MO
- Area
- Whole counties
County Pettis 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
Topeka, KS (KTOP), launched 00:00Z, 0.6 hours before the alert went out and 206 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.
- Mixed-layer CAPE
- 1271 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1216 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KCOU 210034
SVRCOU
MOC159-210115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA MO
734 PM CDT FRI JUL 20 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE CENTRAL PART OF MISSOURI
NORTHERN PETTIS...CITY OF SEDALIA
AT 720 PM RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES NORTHWEST
OF SEDALIA. THE STORM WILL PRODUCE TORRENTIAL RAIN AND DANGEROUS
LIGHTNING AND IS LIKELY TO PRODUCE WINDS IN EXCESS OF 60 MILES AN
HOUR AND SOME LARGE HAIL. THE STORM WILL DRIFT EASTSOUTHEAST
ALONG ROUTE 50 THROUGH PETTIS COUNTY.
THIS STORM COULD PRODUCE A TORNADO WITH LITTLE WARNING. STAY IN
A SMALL CENTRAL ROOM ON THE LOWEST FLOOR OF A STRONG BUILDING.
GOEBELWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 20, 4:44 PM CDT, 2 hours 50 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO 440 PM CDT FRI JUL 20 1990 AT 425 PM...A THUNDERSTORM WITH VERY HEAVY RAIN WAS IN CLAY COUNTY MISSOURI...15 MILES NORTH OF DOWNTOWN KANSAS CITY. THIS STORM PRODUCED /0.41/ INCHES OF RAIN AT THE KANSAS CITY INTERNATIONAL AIRPORT WITHIN THE PAST HOUR. ANOTHER THUNDERSTORM WITH VERY HEAVY RAIN WAS NEAR RICHMOND MISSOURI...30 MILES NORTHEAST OF KANSAS CITY. SCATTERED SHOWERS AND THUNDERSTORMS...SOME PRODUCING VERY HEAVY RAIN...GUSTY WINDS AND FREQUENT LIGHTNING...WILL CONTINUE IN THE KANSAS CITY AND ST JOSEPH AREAS THROUGH THE REST OF THE AFTERNOON AND EVENING. THESE THUNDERSTORMS WER(E PART OF AN AREA OF SHOWERS AND THUNDERSTORMS IN NORTHWEST AND WEST CENTRAL MISSOURI...AND EAST KANSAS WHICH WAS NORTH OF A LINE FROM NEAR COLUMBIA TO 60 MILES SOUTHWEST OF TOPEKA. ALL PRECIPITATION WAS MOVING EAST AT 30 MILES AN HOUR.
Special weather statement, Jul 20, 5:03 PM CDT, 2 hours 31 minutes before
MOZ004-008-202235- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO 440 PM CDT FRI JUL 20 1990 AT 425 PM...A THUNDERSTORM WITH VERY HEAVY RAIN WAS IN CLAY COUNTY MISSOURI...15 MILES NORTH OF DOWNTOWN KANSAS CITY. THIS STORM PRODUCED /0.41/ INCHES OF RAIN AT THE KANSAS CITY INTERNATIONAL AIRPORT WITHIN THE PAST HOUR. ANOTHER THUNDERSTORM WITH VERY HEAVY RAIN WAS NEAR RICHMOND MISSOURI...30 MILES NORTHEAST OF KANSAS CITY. SCATTERED SHOWERS AND THUNDERSTORMS...SOME PRODUCING VERY HEAVY RAIN...GUSTY WINDS AND FREQUENT LIGHTNING...WILL CONTINUE IN THE KANSAS CITY AND ST JOSEPH AREAS THROUGH THE REST OF THE AFTERNOON AND EVENING. THESE THUNDERSTORMS WERE PART OF AN AREA OF SHOWERS AND THUNDERSTORMS IN NORTHWEST AND WEST CENTRAL MISSOURI...AND EAST KANSAS WHICH WAS NORTH OF A LINE FROM NEAR COLUMBIA TO 60 MILES SOUTHWEST OF TOPEKA. ALL PRECIPITATION WAS MOVING EAST AT 30 MILES AAN HOUR.
The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:16 PM CDT | Severe Thunderstorm Warning | EAX | Boone, Cole, Cooper, Moniteau | 59 min |
| Jul 21, 6:16 PM CDT | Severe Thunderstorm Warning | EAX | Maries | 59 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.