Alert archive / Missouri / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 10, NWS Kansas City, MO

May 6, 1986Macon County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 6, 1986, 12:16 PM CDT for Macon County, Missouri. It was in force for 24 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 6, 1986, 12:16 PM CDT (17:16 UTC)
Expired
May 6, 1986, 12:40 PM CDT
In force
24 min
Issued by
NWS Kansas City, MO
Area
Whole counties

County Macon 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 6, 12:30 PM CDTHail 1.75Macon, 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

Peoria Regional, IL (KPIA), launched 12:00Z, 5.3 hours before the alert went out and 268 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, Peoria Regional, IL at 12:00Z on 1986-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1430 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, Peoria Regional, IL at 12:00Z on 1986-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.19395878Sfc1 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
1430 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
814 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
-76 m²/s²
Significant tornado parameter
0.0
Supercell composite
-5.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, May 6, 6:53 AM CDT, 5 hours 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO
650AM CDT TUE MAY 6 1986

THUNDERSTORMS WITH VERY HEAVY RAIN...GUSTY WINDS AND POSSIBLY SMALL HAIL
..HAVE DEVELOPED OXVER NORTHEAST KANSAS AND WERE MOVING EASTWARD INTO
NORTHWEST MISSOURI.

IN MISSOURI...THESE THUNDERSTORMS WILL MOVE INTO HOLT AND DONIPHAN
COUNTIES AND MAY SKIRT THE NORTHERN PORTION OF BUCHANAN COUNTY.
Special weather statement, May 6, 8:36 AM CDT, 3 hours 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO
830AM CDT TUE MAY 6 1986

AT 830 AM...AN AREA OF NUMEROUS THUNDERSTORMS...A FEW VERY STRONG...
EXTENDED FROM EXTREME SOUTHEAST NEBRASKA ACROSS NORTHWEST MISSOURI
INTO SOUTHWEST IOWA.

IN MISSOURI THE STRONGEST THUNDERSTORMS WERE 25 MILES NORTHWEST OF
ST JOSEPH...JUST SOUTH OF MOUNT CITY...IN HOLT COUNTY...AND 35 MILES
NORTHEAST OF ST JOSEPH...WEST OF BETHANY...IN HARRISON COUNTY.

A PERIOD OF VERY HEAVY RAIN...AND POSSIBLY SOME GUSTY WINDS AND
SMALL HAIL WILL OCCUR WITH THE VERY STRONG STORMS.

THE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 TO 40 MILES AN HOUR.
Special weather statement, May 6, 9:37 AM CDT, 2 hours 39 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO
930AM CDT TUE MAY 6 1986

AT 930 AM...AN AREA OF NUMEROUS THUNDERSTORMS...A FEW VERY STRONG...
WAS IN NORTHWEST AND NORTHCENTRAL MISSOURI.

THE STRONGEST THUNDERSTORMS WERE 55 MILES NORTHEAST OF KANSAS CITY...
JUST SOUTHWEST OF CHILLICOTHE...IN LIVINGSTON COUNTY...AND 60 MILES
NORTHEAST OF ST JOSEPH...WEST OF PRINCETON...IN MERCER COUNTY.

A PERIOD OF VERY HEAVY RAIN...AND POSSIBLY SOME GUSTY WINDS AND
SMALL HAIL WILL OCCUR WITH THE VERY STRONG STORMS.

THE THUNDERSTORMS WERE MOVING EAST AT 40 TO 45 MILES AN HOUR.
Special weather statement, May 6, 10:37 AM CDT, 1 hour 39 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO
1030AM CDT TUE MAY 6 1986

AT 1030 AM...AN AREA OF THUNDERSTORMS...A FEW VERY STRONG...CONTINUED
TO MOVE RAPIDLY EAST ACROSS NORTHERN MISSOURI.

THE THUNDERSTORMS WERE IN A BAND...ABOUT 50 MILES WIDE...AND EXTENDED
FROM 20 MILES EAST OF ST JOSEPH TO NORTH OF KIRKSVILLE.

THE STRONGEST THUNDERSTORMS WERE EAST OF CHILLICOTHE...ABOUT 75 MILES
NORTHEAST OF KANSAS CITY...AND JUST TO THE WEST AND NORTHWEST OF
KIRKSVILLE.

A PERIOD OF VERY HEAVY RAIN IS LIKELY WITH THE VERY STRONG STORMS...
AND ALSO THE POSSIBLY OF SOME GUSTY WINDS AND SMALL HAIL.
BETWEEN 7 AND 10 AM BETHANY MISSOURI...50 MILES NORTHEAST OF ST JOSEPH
RECEIVED .69 OF AN INCH OF RAIN.

THE THUNDERSTORMS WERE MOVING EAST AT 40 TO 45 MILES AN HOUR.

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 10:53 AM CDTSevere Thunderstorm WarningEAXLinn37 min
May 5, 7:49 PM CDTSevere Thunderstorm WarningEAXLeavenworth, Wyandotte26 min

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.