Alert archive / Missouri / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 10, NWS Kansas City, MO
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
| Time | Report | Where | Remark |
|---|---|---|---|
| May 6, 12:30 PM CDT | Hail 1.75 | Macon, 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.
- 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
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 10:53 AM CDT | Severe Thunderstorm Warning | EAX | Linn | 37 min |
| May 5, 7:49 PM CDT | Severe Thunderstorm Warning | EAX | Leavenworth, Wyandotte | 26 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.