Alert archive / Mississippi / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 34, NWS Mobile, AL

May 18, 1986Forrest County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at May 18, 1986, 3:25 PM CDT for Forrest County, Mississippi. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
May 18, 1986, 3:25 PM CDT (20:25 UTC)
Expired
May 18, 1986, 4:00 PM CDT
In force
35 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Forrest 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, 8.4 hours before the alert went out and 148 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 1986-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 286 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 1986-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.193958Sfc1 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
286 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
680 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 182025
SVRMOB
MSC035-182100-

BULLETIN..IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
325 PM CDT SUN MAY 18 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 400 PM CDT FOR PERSONS IN THE FOLLOWING COUNTIES OF

SOUTHEAST MISSISSIPPI...FORREST

AT 308 PM CDT RADAR SHOWED A CLUSTER OF SEVERE THUNDERSTORMS OVER LAMAR
COUNTY MOVING TOWARD THE EAST NORTHEAST AT 40 MPH

THERE ARE STRONG INDICATIONS OF LARGE HAIL AND DAMAGING WINDS WITH
THIS THUNDERSTORM.

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, May 18, 12:26 PM CDT, 2 hours 59 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1223 PM CDT SUN MAY 18 1986

..JACKSON ALABAMA POLICE REPORTED POWER LINES DOWN IN THE SOUTH
PART OF THAT CITY.  TWIN TORNADOES WERE OBSERV;ED PASSING OVER THE
AREA ABOUT NOON.  ANOTHER TORNADO WAS REPORTED BY THE PUBLIC 9 MILES
NORTH OF JACKSON NEAR ANTIOCH..ABOUT 1215 PM.
Special weather statement, May 18, 1:15 PM CDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
115 PM CDT SUN MAY 18 1986

...TORNADO WATCH NUMBER 194 REMAINS IN EFFECT UNTIL 500 PM CDT
FOR ALL OF SOUTHEAST MISSISSIPPI AND MOST OF SOUTHWEST ALABAMA...

...A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 200 PM CDT FOR
MONROE COUNTY IN SOUTHWEST ALABAMA....

AT 110 PM CDT THE MOBILE WEATHER RADAR SHOWED SCATTERED SHOWERS AND
A FEW VERY HEAVY THUNDERSTORMS OCCURING OVER CENTRAL AND SOUTH CENTRAL
ALABAMA MAINLY TO THE NORTHEAST OF A LINE FROM BREWTON TO SILAS.  THE
HEAVIEST THUNDERSTORMS WERE LOCATED...NEAR MONROEVILLE...NEAR REPTON...
15 MILES WEST OF GROVE HILL.  THESE STORMS ARE MOVING TO THE NORTHEAST
AT 25 MPH AND MAY PRODUCE HAIL AND STRONG GUSTY WINDS ALONG WITH BRIEF
PERIODS OF VERY HEAVY RAINFALL.

ALSO, A LARGE AREA OF VERY HEAVY THUNDERSTORMS EXTENDS ACROSS MISSISSIPPI
FROM NEAR MCCOMB TO NEAR JACKSON.  THESE STORMS ARE MOVING TO THE EAST
AT 30 MPHz AND WILL PROBABLY EFFECT SOUTHEAST MISSISSIPPI LATER THIS
AFTERNOON.

STAY TUNED TO NOAA WEATHER RADIO, COMMERCIAL RADIO, OR TELEVISION FOR
THE LATEST INFORMATION ON THIS POTENTIALLY DANGEROUS WEATHER SITUATION.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 2:25 PM CDTSevere Thunderstorm WarningMOBLamar35 min
May 18, 2:45 PM CDTSevere Thunderstorm WarningMOBGreene, Perry45 min
May 18, 3:10 PM CDTSevere Thunderstorm WarningMOBLamar50 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.