Alert archive / Missouri / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 33, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Jun 18, 1986, 4:39 PM CDT for Clay County, Missouri. It was in force for 51 min. 2 reports 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
- Jun 18, 1986, 4:39 PM CDT (21:39 UTC)
- Expired
- Jun 18, 1986, 5:30 PM CDT
- In force
- 51 min
- Issued by
- NWS Kansas City, MO
- Area
- Whole counties
County Clay 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 4:45 PM CDT | Hail 1.25 | Clay, MO | |
| Jun 18, 5:10 PM CDT | Hail 0.75 | Clay, 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, 9.7 hours before the alert went out and 111 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
- 1672 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 920 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMCI 182139 SVRMCI MOC047-182230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE KANSAS CITY INT'L AIRPORT MO 439 PM CDT WED JUN 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTHWEST MISSOURI...CLAY AT 430PM CDT GLADSTONE POLICE REPORTED 60 TO 70 MPH WINDS... PEA TO MARBLE SIZE HAIL AND VERY HEAVY RAIN. AN INTENSE THUNDERSTORM OVER GLADSTONE MISSOURI WAS MOVING VERY SLOWLY NORTH...AT 5 TO 10 MILES AN HOUR. SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH ..LARGE HAIL..FREQUENT LIGHTNING..AND HEAVY RAIN THAT CAN QUICKLY FLOOD NSMALL STREAMS AND LOW LYING AREAS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. WEJ/CS
What 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, Jun 18, 4:15 PM CDT, 24 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO 400PM CDT WED JUN 18 1986 AT 400 PM CDT...AN INTENSE THUNDERSTORM DEVELOPED IN CLAY COUNTY MISSOURI...BETWEEN LIBERTY AND KANSAS CITY INTERNATIONAL AIRPORT... DURING THE PAST 30 MINUTES. THIS STORM WILL PROBABLY AFFECT SUCH PLACES AS RANDOLPH...CLAYCOMA...PLEASANT VALLEY AND LIBERTY. AS THIS STORM DRIFTS SLOWLY TOWARD THE NORTH...SMALL HAIL...GUSTY SURFACE WINDS AND HEAVY DOUWNPOURS OF RAIN ARE POSSIBLE. SCATTERED THUNDERSTORMS...WITH SMALL HAIL...GUSTY SURFACE WINDS AND HEAVY DOWNPOURS OF RAIN...ARE EXPECTED IN BOTH THE GREATER KANSAS CITY AND ST JOSEPH AREAS UNTIL SHORTLY AFTER SUN4SET THIS WEDNESDAY EVENING.
Nearby
Severe Thunderstorm Warnings in Missouri, 1986Every severe thunderstorm warning in 1986
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.