Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 93, NWS Mobile, AL

April 14, 1990Hancock County, Pearl River County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Apr 14, 1990, 3:50 PM CDT for Hancock County, Pearl River County, Mississippi. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Apr 14, 1990, 3:50 PM CDT (20:50 UTC)
Expired
Apr 14, 1990, 4:33 PM CDT
In force
43 min
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Hancock County, MS, Pearl River 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.8 hours before the alert went out and 40 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 1990-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 129 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 1990-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 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
129 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 142054 COR
SVRMOB
MSC045-109-142145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING  CORRECTION
NATIONAL WEATHER SERVICE MOBILE AL
350 PM CDT SAT APR 14 1990

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHEAST MISSISSIPPI

   ...HANCOCK COUNTY...EASTERN PEARL.RIVER COUNTY

AT 345 PM MOBILE RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS IN
PEARL RIVER AND HANCOCK COUNTIES OF SOUTHEAST MISSISSIPPI. THE LINE OF
SEVERE THUNDERSTORMS EXTENDED FROM 10 MILES NORTH OF POPULARVILLE TO
20 MILES SOUTH OF PICAYUNE.

A SEVERE THUNDERSTORM WILL BE MOVING ACROSS POPULARVILLE DURING THE
NEXT 30 MINUTES.

MOVEMENT OF THE STORMS WAS TO THE NORTHEAST AT 25 MILES AN HOUR.

THE PEARL RIVER SHERIFFS OFFICE REPORTED TREES DOWN IN THE CROSSROADS
VICINITY BEFORE 333 PM REPORTED BY THE PUBLIC.

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, Apr 14, 3:08 PM CDT, 42 minutes before
ALC097-129-MSC039-041-045-047-059-109-111-131-142215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
308 PM CDT SAT APR 14 1990

AT 315 PM CDT MOBILE RADAR SHOWED THE LEADING EDGE OF A LINE OF
SHOWERS AND ISOLATED THUNDERSTORMS MOVING INTO SOUTHEAST MISSISSIPPI
FROM LOUISIANA. THE STRONGEST STORMS WILL BE MOVING INTO HANCOCK AND
PEARL RIVER COUNTIES WITHIN THE NEXT 30 MINUTES. THE STORMS WILL BE
TRACKING NORTHEAST ACROSS COASTAL MISSISSIPPI. THE LINE WILL BE MOVING
ACROSS SOUTHEAST MISSISSIPPI FOR THE NEXT COUPLE HOURS REACHING
SOUTHWEST ALABAMA BETWEEN 6 AND 7 THIS EVENING.

RESIDENTS SHOULD REMAIN ALERT FOR CHANGING WEATHER CONDITIONS AS THIS
STORM SYSTEM MOVES ACROSS MIScSISSIPPI THEN EAST INTO ALABAMA.

Nearby

Severe Thunderstorm Warnings in Mississippi, 1990Every severe thunderstorm warning in 1990

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.