Alert archive / Mississippi / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 66, NWS Mobile, AL

July 24, 1993Greene County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jul 24, 1993, 3:50 PM CDT for Greene County, Mississippi. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jul 24, 1993, 3:50 PM CDT (20:50 UTC)
Expired
Jul 24, 1993, 4:30 PM CDT
In force
40 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Greene County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.8 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, Slidell Radar S, LA at 12:00Z on 1993-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1043 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, Slidell Radar S, LA at 12:00Z on 1993-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
1043 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
818 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
60 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 
WUUS1 KMOB 242051 RRA
SVRMOB
MSC041-242130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
350 PM CDT SAT JUL 24 1993
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST MISSISSIPPI
 
   ...NORTHWESTERN GREENE COUNTY
 
AT 345 PM THE MOBILE RADAR INDICATED A SEVERE THUNDERSTORM NEAR THE
TOWNS OF SAND HILL AND AVERA. LITTLE MOVEMENT WAS INDICATED.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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, Jul 24, 3:04 PM CDT, 46 minutes before
ALZ013-015-016-MSZ013-014-242100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
303 PM CDT SAT JUL 24 1993

AT 300 PM THE MOBILE RADAR INDICATED SEVERAL CLUSTERS OF STRONG
THUNDERSTORMS OVER PORTIONS OF SOUTHEAST MISSISSIPPI. THE STRONGEST
STORMS WERE LOCATED OVER NORTHERN HARRISON AND IN STONE COUNTY
MISSISSIPPI. THE STORMS WERE MOVING VERY SLOWLY TO THE WEST.

THESE THUNDERSTORMS ARE PRODUCING DANGEROUS LIGHTNING...GUSTY WINDS...
AND VERY HEAVY RAINFALL.  THE RAINFALL WILL LIKELY FLOOD ROADS AND
STREETS BRIEFLY AND CAUSE SMALL STREAMS TO RISE TO NEAR BANKFULL.
THE RAINFALL WILL BE ESPECIALLY SIGNIFICANT IN STONE COUNTY WHERE AN
ESTIMATED 1 TO 2 INCHES FELL DURING THE MORNING.

MOTORISTS IN THESE COUNTIES SHOULD BE ALERT FOR THE HEAVY RAINFALL AND
SLOW DOWN.

OTHER STRONG THUNDERSTORMS ARE LIKELY TO DEVELOP OVER PORTIONS OF
SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA THIS AFTERNOON.

RESIDENTS ARE REMINDED T(HAT LIGHTNING IS THE STORMS WORST KILLER.
GO INDOORS OR GET INTO A VEHICHLE IF A THUNDERSTORM DEVELOPS NEAR YOU.

Nearby

Severe Thunderstorm Warnings in Mississippi, 1993Every severe thunderstorm warning in 1993

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.