Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 96, NWS Jackson, MS

May 12, 1990Choctaw County, Alabama

NWS Jackson, MS issued this severe thunderstorm warning at May 12, 1990, 5:48 PM CDT for Choctaw County, Alabama. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
May 12, 1990, 5:48 PM CDT (22:48 UTC)
Expired
May 12, 1990, 6:30 PM CDT
In force
42 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Choctaw County, AL

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

Centreville/Bibb, AL (KCKL), launched 12:00Z, 10.8 hours before the alert went out and 140 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, Centreville/Bibb, AL at 12:00Z on 1990-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Centreville/Bibb, AL at 12:00Z on 1990-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1743 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
288 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 
TTAA00 KMEI 122249
SVRMEI
ALC023-122330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MERIDIAN MS
548 PM CDT SAT MAY 12 1990
 
THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL ALABAMA
 
   ...CHOCTAW COUNTY
 
AT 547 PM CDT MERIDIAN WEATHER RADAR INDICATED A SEVERE THUNDERSTORM
15 MILES WEST OF BUTLER ALABAMA. THE STORM WAS MOVING EAST AT 35 MPH.
 
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 CYOUR 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, May 12, 2:33 PM CDT, 3 hours 15 minutes before
MSZ009-012-ALZ008-013-122100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 230 PM CDT SAT MAY 12 1990

 SEVERE THUNDERSTORM WATCH NUMBER 219 IS IN EFFECT UNTIL 900 PM CDT
FOR ALL OF EAST CENTRAL MISSISSIPPI.

AT 220 PM CDT RADAR INDICATED WIDELY SCATTERED STRONG THUNDERSTORMS
AND PATCHES OF LIGHT RAIN ALONG AND NORTHWEST OF A COLUMBUS TO
DURANT TO PORT GIBSON LINE.

THE AREA WAS MOVING NORTHEAST AT 35 MPH AND IS EXPECTED TO CONTINUE
FOR THE NEXT SEVERAL HOURS.

ALL LIVING IN EAST CENTRAL MISSISSIPPI SHOULD REMAIN WEATHER ALERT
AS SEVERE WEATHER IS A STRONG POSSIBILITY THIS AFTERNOON.

                                         C
Special weather statement, May 12, 2:46 PM CDT, 3 hours 2 minutes before
MSZ001>004-006-008-010-011-122100-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
240 PM CDT SAT MAY 12 1990

...SEVERE THUNDERSTORM WATCH NUMBER 219 REMAINS IN EFFECT FOR CENTRAL
AND SOUTH MISSISSIPPI...

AT 235 PM...A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL
EXTENDED FROM NATCHEZ TO HOLLY BLUFF. THE STRONGEST STORMS WERE LOCATED
FROM LORMAN TO EDWARDS. STORM MOVEMENT WAS TO THE EAST AT 35 MILES AN
HOUR.

THESE STORMS HAVE BEEN ASSOCIATED WITH HAIL...TORRENTIAL RAIN AND
STRONG WINDS. AREAS OF STREET AND HIGHWAY FLOODING HAVE OCCURED WITH
THESE STORMS WITH VICKSBURG AND GREENVILLE REPORTING FLOODING OF
LOW-LYING AREAS.

STRONG THUNDERSTORMS ARE CONTINUING TO DEVELOP OVER NORTHERN LOUISIANA
AND SOUTHERN ARKANSAS AND WILL TRACK OVER CENTRAL AND SOUTHERN
MISSISSIPPI FOR THE NEXT COUPLE OF HOURS. PLEASE REMAIN ALERT TO
CHANGING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS OR WARNINGS[.
Special weather statement, May 12, 4:06 PM CDT, 1 hour 42 minutes before
MSZ009-012-ALZ008-013-122300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
405 PM CDT SAT MAY 12 1990

SEVERE THUNDERSTORM WATCH NUMBER 219 CONTINUES UNTIL 900 PM CDT FOR
ALL OF EAST CENTRAL MISSISSIPPI.

AT 400 PM NATIONAL WEATHER SERVICE RADAR INDICATED RAIN AND WIDELY
SCATERED THUNDERSTORMS ALONG AND NORTHWEST OF A MACON TO EDINBURG
TO DECATUR TO MONTICELLO LINE.  ALSO THERE WAS A LINE OF STRONG
THUNDERSTORMS THAT EXTENDED FROM NEAR FOREST TO NEW HERBON.

MOVEMENT WAS TO THE EAST AT 40 MPH.

THOSE OF YOU IN NEWTON...JASPER AND JONES COUNTIES SHOULD EXPECT
STRONG GUSTY WINDS...SMALL HAIL...LIGHTNING AND HEAVY RAINFALL WITHIN
THE NEXT HOUR OR BY 505 PM CDT.
Special weather statement, May 12, 5:02 PM CDT, 46 minutes before
MSZ009-012-ALZ008-013-130000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
500 PM CDT SAT MAY 12 1990

SEVERE THUNDERSTORM WATCH NUMBER 219 CONTINUES UNTIL 900 PM CDT FOR
ALL OF EAST CENTRAL MISSISSIPPI.

AT 455 PM RADAR SHOWED A SOLID LINE OF VERY STRONG THUNDERSTORMS THAT
EXTENDED FROM 17 MILES NORTHWEST OF MERIDIAN TO 36 MILES SOUTHWEST OF
MERIDIAN.

THE LINE WAS MOVING EAST AT 40 MPH.

THOSE OF YOU IN LAUDERDALE AND CLARKE COUNTIES OF EAST CENTRAL
MISSISSIPPI SHOULD EXPECT FREQUENT LIGHTNING...STRONG GUSTY WINDS...SMALL
HAIL AND PERIODS OF HEAVY RAINFALL TO START IN THE NEXT 10 TO 40 MINUTES
OR FROM 510 TO 550 PM CDT.
Special weather statement, May 12, 5:10 PM CDT, 38 minutes before
MSZ001>004-006-008-010-011-122100-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
500 PM CDT SAT MAY 12 1990

...SEVERE THUNDERSTORM WATCH NUMBER 219 REMAINS IN EFFECT FOR CENTRAL
AND SOUTH MISSISSIPPI...

AT 500 PM...A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL
EXTENDED FROM MERIDIAN TO COLLINS. THE STRONGEST STORMS WERE LOCATED
FROM BAY SPRINGS TO TAYLORSVILLE. STORM MOVEMENT WAS TO THE EAST AT
35 MILES AN HOUR.

THESE STORMS HAVE BEEN ASSOCIATED WITH HAIL...TORRENTIAL RAIN AND
STRONG WINDS. AREAS OF STREET AND HIGHWAY FLOODING HAVE OCCURED WITH
THESE STORMS WITH VICKSBURG AND GREENVILLE REPORTING FLOODING OF
LOW-LYING AREAS.

STRONG THUNDERSTORMS ARE CONTINUING TO DEVELOP OVER NORTHERN LOUISIANA
AND SOUTHERN ARKANSAS AND WILL TRACK OVER CENTRAL AND SOUTHERN
MISSISSIPPI FOR THE NEXT COUPLE OF HOURS. PLEASE REMAIN ALERT TO
CHANGING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS OR WARNINGS.
Special weather statement, May 12, 5:40 PM CDT, 8 minutes before
MSZALL-122345-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
539 PM CDT SAT MAY 12 1990

...SEVERE THUNDERSTORM WATCH FOR CENTRAL AND SOUTH MISSISSIPPI TILL PM
9 PM...
...FLASH FLOOD WATCH FOR CENTRAL MISSISSIPPI TILL MIDNIGHT...

AT 535 PM CDT...A 50 MILE WIDE AREA OF STRONG THUNDERSTORMS
CONTINUED OVER SOUTH-CENTRAL MISSISSIPPI FROM ABOUT LORMAN TO MAGEE TO
SHUBUTA.  THESE THUNDERSTORMS CONTINUED TO MOVE OVER THE SAME GENERAL
AREA...AND WERE QUICKLY SATURATING THE GROUND.  THE STRONGEST STORMS
WERE OVER NORTHERN LAWRENCE COUNTY...AND BETWEEN LAUREL AND MERIDIAN.

OTHER SCATTERED THUNDERSTORMS WERE STILL INDICATED OVER EASTERN
LOUISIANA...MOVING ;EASTWARD TOWARDS WESTERN MISSISSIPPI.

A LARGE AREA OF RAIN WITH EMBEDDED THUNDERSTORMS CONTINUED OVER THE
NORTHERN HALF OF MISSISSIPPI.

MOVEMENT WAS EAST AT 40 MILES AN HOUR.

Nearby

Severe Thunderstorm Warnings in Alabama, 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.