Alert archive / Mississippi / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 63, NWS Mobile, AL

May 23, 1989Forrest County, Lamar County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at May 23, 1989, 6:36 PM CDT for Forrest County, Lamar County, Mississippi. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
May 23, 1989, 6:36 PM CDT (23:36 UTC)
Expired
May 23, 1989, 7:15 PM CDT
In force
39 min
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Forrest County, MS, Lamar 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, 11.6 hours before the alert went out and 110 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 1989-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3122 joules per kilogram.LCLEL10008507005003002001001 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 1989-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
3122 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
110 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 KJAN 232338
SVRJAN
MSC035-073-232330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
636 PM CDT TUE MAY 23 1989

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...

IN SOUTHEAST MISSISSIPPI
          ...FORREST...LAMAR

AT 630 PM CDT...JACKSON RADAR INDICATED A CLUSTER OF VERY STRONG
THUNDERSTORMS PRODUCING LARGE HAIL JUST SOUTH OF HATTIESBURG.
THE STORM IS DRIFTING SLOWLY SOUTH AND WILL BE APPROACHING CAMP
SHELBY AND PURVIS BEFORE 700 PM.

MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS
IF THREATENING WEATHER ARRIVES.

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 23, 2:30 PM CDT, 4 hours 6 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
230 PM CDT TUE MAY 23 1989

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 5 PM CDT AND
INCLUDES THE FOLLOWING COUNTIES IN NORTHWEST FLORIDA. ESCAMBIA...SANTA
ROSA...OKALOOSA...WALTON...BAY...WASHINGTON AND HOLMES.

AT 230 PM CDT...THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WERE OVER
SOUTH ALABAMA AND THE WEST FLORIDA PANHANDLE. THUNDERSTORMS WERE 25
MILES OR MORE INLAND AND WERE MOVING TOWARD THE EAST NEAR 25 MILES AN
HOUR.
Special weather statement, May 23, 2:47 PM CDT, 3 hours 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
245 PM TUE MAY 23 1989

ALL COUNTIES IN SOUTHWEST ALABAMA REMAIN UNDER A SEVERE THUNDERSTORM
WATCH UNTIL 500 PM TODAY.

AT 240 PM THE MOBILE RADAR INDICATED SCATTERED THUNDERSTORMS MOVING
TOWARD THE EAST AT 35 MPH OVER SOUTHWEST ALABAMA.  THE STRONGEST
STORMS WERE MOVING ACROSS NORTHWESTERN CLARKE COUNTY ALABAMA.

RESIDENTS OF SOUTHWEST ALABAMA SHOULD REMAIN ALERT FOR THE POSSIBLITY
OF SEVERE WEATHER THIS AFTERNOON.
Special weather statement, May 23, 3:26 PM CDT, 3 hours 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
330 PM CDT TUE MAY 23 1989

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 5 PM CDT AND
INCLUDES THE FOLLOWING COUNTIES IN NORTHWEST FLORIDA. ESCAMBIA...SANTA
ROSA...OKALOOSA...WALTON...BAY...WASHINGTON AND HOLMES.

AT 330 PM CDT...NUMEROUS THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...
WERE OVER SOUTH ALABAMA AND THE WEST FLORIDA PANHANDLE. THUNDERSTORMS
MAINLY 15 MILES OR MORE INLAND BUT WERE BEGINNING TO SPREAD SLOWLY
SOUTH TOWARD THE COAST. INDIVIDUAL THUNDERSTORMS WERE MOVING TOWARD THE
EAST ABOUT 25 MILES AN HOUR.

STRONG GUSTY WINDS ALONG WITH PERIODS OF HEAVY RAIN AND FREQUENT
LIGHTNING CAN B"E EXPECTED WITH THE PASSAGE OF THESE THUNDERSTORMS.
Special weather statement, May 23, 4:10 PM CDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
410 PM CDT TUE MAY 23 1989

...SOUTHWEST ALABAMA REMAINS UNDER A SEVERE THUNDERSTORM WATCH
   UNTIL 5 PM CDT...

AT 405 PM NUMEROUS THUNDERSTORMS WERE OVER SOUTHWEST ALABAMA MOVING
EAST-SOUTHEAST AT 20 MPH. THE STRONGEST STORMS WERE LOCATED FROM
SOUTHWEST MONROE COUNTY EXTENDING SOUTHWARD ACROSS WESTERN ESCAMBIA
COUNTY. OTHER THUNDERSTORMS WERE OCCURRING IN WASHINGTON AND SOUTHERN
CLARKE COUNTIES. LITTLE THUNDERSTORM ACTIVITY WAS IN MOBILE OR
BALDWIN COUNTIES BUT STORMS ARE EXPECTED TO MOVE INTO THESE COUNTIES
DURING THE NEXT SEVERAL HOURS.

RESIDENTS OF SOUTHWEST ALABAMA SHOULD REMAIN ALERT FOR THE POSSIBLITY
OF SEVERE WEATHER dFOR THE REMAINDER OF THE AFTERNOON.
Special weather statement, May 23, 5:44 PM CDT, 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
545 PM CDT TUE MAY 23 1989

...SEVERE THUNDERSTORM WATCH UNTIL 10 PM FOR ALL OF SOUTHWEST
   ALABAMA AND SOUTHEAST MISSISSIPPI...

AT 540 PM A LINE OF THUNDERSTORMS 20 MILES WIDE EXTENDED FROM THE
LAUREL-HATTIESBURG AREA SOUTHEASTWARD ACROSS CITRONELLE AND BAY
MINETTE ALABAMA. THE LINE WAS MOVING SOUTH AT 15 MPH WHILE THE
THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MPH.

THE LINE OF STORMS HAS DECREASED IN INTENSITY DURING THE PAST HOUR.
HOWEVER...THE LINE COULD INTENSIFY AT ANY TIME THIS EVENING.
STRONG GUSTY WINDS...DANGEROUS LIGHTNING...HEAVY RAINFALL AND
POSSIBLY HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS AS THEY
CONTINUE MOVING TOWARDS THE COAST.
Special weather statement, May 23, 6:31 PM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
630 PM CDT TUE MAY 23 1989

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
THE NORTHWEST FLORIDA PANHANDLE...

AT 630 PM CDT...THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WERE OVER
THE FLORIDA PANHANDLE AND SOUTHWEST ALABAMA WITH THE HEAVIEST RAIN
STRETCHING FROM FT WALTON NORTHWEST TO NEAR MOBILE.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 TO 30 MILES AN HOUR.

THESE THUNDERSTORMS MAY PRODUCE PERIODS OF VERY HEAVY RAIN...FREQUENT
LIGHTNING...STRONG GUSTY WINDS AND POSSIBLE HAIL. PEOPLE IN THESE
AREAS SHOULD STAY ALERT AND BE PREPARED TO MOVE TO SAFETY IF WARNINGS
ARE ISSUED.
F

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 4:21 PM CDTSevere Thunderstorm WarningMOBGreene54 min
May 23, 6:04 PM CDTSevere Thunderstorm WarningMOBForrest26 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1989Every severe thunderstorm warning in 1989

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.