Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 32, NWS Mobile, AL

February 15, 1990Lamar County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Feb 15, 1990, 9:56 PM CST for Lamar County, Mississippi. It was in force for 34 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 15, 1990, 9:56 PM CST (03:56 UTC)
Expired
Feb 15, 1990, 10:30 PM CST
In force
34 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Lamar County, MS

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Feb 15, 10:10 PM CSTThunderstorm Wind 0Lamar, MS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.9 hours before the alert went out and 108 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 00:00Z on 1990-02-16Temperature 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, Slidell Radar S, LA at 00:00Z on 1990-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.1939587897Sfc1 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
NaN m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
173 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 160356
SVRJAN
MSC073-160430-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
956 PM CST THU FEB 15 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHEAST MISSISSIPPI
          ...SOUTHERN LAMAR
 
AT 955 PM CST...A SEVERE THUNDERSTORM WAS INDICATED OVER NORTHERN
PEARL RIVER COUNTY NORTHWEST OF POPLARVILLE. THIS STORM WAS HEADED UP
INTO SOUTHERN LAMAR COUNTY TOWARDS LUMBERTON. MOVEMENT WAS NORTHEAST
AT 60 MILES AN HOUR.
 
 
A TORNADO WATCH IS ALSO IN EFFECT.  REMEMBER SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO^ ADVANCE WARNING.  REMAIN
CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
<

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, Feb 15, 5:00 PM CST, 4 hours 56 minutes before
ALZ016-013-015-MSZ013-014-160000

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
500 PM CST THU FEB 15 1990

...TORNADO WATCH CANCELLED FOR SOUTHWEST ALABAMA...CONTINUES FOR
PORTIONS OF SOUTHEAST MISSISSIPPI...

THE TORNADO WATCH HAS BEEN CANCELLED FOR PORTIONS OF SOUTHWEST ALABAMA
...BUT SEVERAL SOUTHEAST MISSISSIPPI COUNTIES REMAIN UNDER ANOTHER
TORNADO WATCH.  THOSE COUNTIES ARE PEARL-RIVER...PERRY AND GREENE.

THE MOBILE RADAR AT 455 PM SHOWED ONLY LIGHT TO MODERATE SHOWERS OVER
SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA.  THEY WERE MOVING RAPIDLY
TO THE NORTH NORTHEAST.  FURTHER NORTH...VERY STRONG THUNDERSTORMS WERE
OCCURRING OVER CENTRAL ALABAMA AND EAST CENTRAL MISSISSIPPI.

RESIDENTS IN THOSE MISSISSIPPI COUNTIES IN THE WATCH AREA SHOULD REMAIN
ALERT THIS EVENING.
Special weather statement, Feb 15, 5:01 PM CST, 4 hours 55 minutes before
ALZ016-013-015-MSZ013-014-160000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
500 PM CST THU FEB 15 1990

...TORNADO WATCH CANCELLED FOR SOUTHWEST ALABAMA...CONTINUES FOR
PORTIONS OF SOUTHEAST MISSISSIPPI...

THE TORNADO WATCH HAS BEEN CANCELLED FOR PORTIONS OF SOUTHWEST ALABAMA
...BUT SEVERAL SOUTHEAST MISSISSIPPI COUNTIES REMAIN UNDER ANOTHER
TORNADO WATCH.  THOSE COUNTIES ARE PEARL-RIVER...PERRY AND GREENE.

THE MOBILE RADAR AT 455 PM SHOWED ONLY LIGHT TO MODERATE SHOWERS OVER
SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA.  THEY WERE MOVING RAPIDLY
TO THE NORTH NORTHEAST.  FURTHER NORTH...VERY STRONG THUNDERSTORMS WERE
OCCURRING OVER CENTRAL ALABAMA AND EAST CENTRAL MISSISSIPPI.

RESIDENTS IN THOSE MISSISSIPPI COUNTIES IN THE WATCH AREA SHOULD REMAIN
ALERT THIS EVENING.
Special weather statement, Feb 15, 8:02 PM CST, 1 hour 54 minutes before
MSZ013-014-160330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
800 PM CST THU FEB 15 1990

...TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTHEAST
MISSISSIPPI...

A TORNADO WATCH REMAINS IN EFFECT FOR PEARL-RIVER...PERRY AND GREENE
COUNTIES OF MISSISSIPPI UNTIL 1000 PM.

THE MOBILE RADAR AT 755 PM INDICATED A SCATTERED LINE OF DEVELOPING
THUNDERSTORMS FROM NEAR MERIDIAN SOUTHWEST TO JUST WEST OF NEW ORLEANS.
THE LINE WAS DRIFTING SLOWLY EAST WHILE THE THUNDERSTORMS WERE MOVING
TOWARD THE NORT NORTHEAST AT 40 MPH.

THIS LINE OF THUNDERSTORMS IS EXPECTED TO CONTINUE DEVELOPING AND
DRIFTING EAST AND WILL AFFECT PORTIONS OF SOUTHEAST MISSISSIPPI BEFORE
MIDNIGHT.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 9:49 PM CSTSevere Thunderstorm WarningMOBPearl River26 min
Feb 15, 10:09 PM CSTTornado WarningMOBForrest, Lamar36 min
Feb 15, 10:40 PM CSTSevere Thunderstorm WarningMOBPerry35 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.