Alert archive / Mississippi / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 69, NWS Jackson, MS

June 16, 1986Copiah County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 16, 1986, 5:55 PM CDT for Copiah County, Mississippi. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Jun 16, 1986, 5:55 PM CDT (22:55 UTC)
Expired
Jun 16, 1986, 6:30 PM CDT
In force
35 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Copiah County, MS

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

Jackson, MS (KJAN), launched 12:00Z, 10.9 hours before the alert went out and 61 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, Jackson, MS at 12:00Z on 1986-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 781 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, Jackson, MS at 12:00Z on 1986-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 square meters per square second.1939Sfc1 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
781 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
1022 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAAOO KJAN 162255
SVRJAN
MSC029-162330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
555 PM CDT MON JUN 16 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  630 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN CENTRAL MISSISSIPPI
          ..COPIAH

AT 550 PM CDT JACKSON RADAR WAS DETECTING A SEVERE THUNDERSTORM ABOUT
10 MILES SOUTHWEST OF HAZLEHURST IN COPIAH COUNTY. THIS THUNDERSTORM
IS MOVING SLOWLY TOWARD THE NORTH.
 
IF YOU ARE CAUGHT OUTSIDE, SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND, LARGE HAIL, VERY HEAVY RAIN, AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.  STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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

Local storm report, Jun 16, 4:09 PM CDT, 1 hour 46 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
410 PM CDT MON JUN 16 1986

TIME:        EVENT:
215PM        PUBLIC REPORTS SMALL HAIL IN NORTHWEST WAYNE COUNTY
             MISSISSIPPI
Special weather statement, Jun 16, 4:18 PM CDT, 1 hour 37 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
415 PM CDT MON JUN 16 1986

 ...STRONG THUNDERSTORMS IN CENTRAL AND SOUTH MISSISSIPPI...

AT 410 PM CDT...JACKSON RADAR WAS DETECTING SEVERAL CLUSTERS OF STRONG
THUNDERSTORMS ACROSS CENTRAL AND SOUTH MISSISSIPPI.

THE FIRST CLUSTER OF THUNDERSTORMS WAS LOCATED IN A 20 MILE WIDE BAND
FROM JACKSON SOUTHEAST TO JUST SOUTH OF RALEIGH.  THE SECOND CLUSTER
WAS JUST SOUTH OF A WOODVILLE...MCCOMB...COLUMBIA LINE.

EARLIER...ONE OF THESE STORMS PRODUCED PENNY SIZED HAIL AT BRANDON
AT 330PM WITH HAIL THE SIZE OF HALF-DOLLARS AT PICYUNE AROUND 4PM.

ALL OF THE THUNDERSTORMS IN THESE CLUSTERS CONTINUE TO HAVE THE
POTENTIAL TO PR,ODUCE HAIL...STRONG WINDS AND HEAVY DOWNPOURS OF RAIN.
Special weather statement, Jun 16, 5:11 PM CDT, 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
510 PM CDT MON JUN 16 1986

...INTENSE THUNDERSTORMS CONTINUE OVER CENTRAL AND SOUTH MISSISSIPPI...

AT 505 PM CDT...JACKSON RADAR WAS DETECTING SEVERAL INTENSE THUNDER-
STORMS NEAR AND WITHIN A 25 MILE RADIUS OF MCCOMB.

A COUPLE OF STRONG STORMS WERE ALSO OCCURRING BETWEEN CRYSTAL SPRINGS
AND NATCHEZ OVER SOUTHWEST MISSISSIPPI.  STRONG STORMS WERE ALSO NOTED
OVER CENTRAL MISSISSIPPI BETWEEN YAZOO CITY AND CANTON.

ONE INTENSE STORM WAS OCCURRING OVER NORTHEAST LOUISIANA 25 MILES NORTH-
EAST OF MONROE.

ALL OF THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING SMALL HAIL..BRIEF
PERIODS OF HEAVY RAIN..AND FREQUENT LIGHTNING. Q THESE STORMS WERE STILL
DRIFTING SLOWLY TO THE NORTH.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 16, 1:48 PM CDTSevere Thunderstorm WarningJANClarke, Wayne55 min
Jun 16, 3:18 PM CDTSevere Thunderstorm WarningJANRankin57 min
Jun 16, 5:25 PM CDTSevere Thunderstorm WarningJANLincoln35 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive.