Alert archive / Mississippi / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 102, NWS Jackson, MS

May 18, 1989Jasper County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 18, 1989, 3:32 PM CDT for Jasper County, Mississippi. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
May 18, 1989, 3:32 PM CDT (20:32 UTC)
Expired
May 18, 1989, 4:15 PM CDT
In force
43 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Jasper 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

Jackson, MS (KJAN), launched 12:00Z, 8.5 hours before the alert went out and 96 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, Jackson, MS at 12:00Z on 1989-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 176 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, Jackson, MS at 12:00Z on 1989-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 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
176 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 18, 12:57 PM CDT, 2 hours 35 minutes before
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Special weather statement, May 18, 1:18 PM CDT, 2 hours 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
115 PM CDT THU MAY 18 1989

...A TORNADO WATCH IS IN EFFECT FOR PORTIONS OF SOUTH MISSISSIPPI
   UNTIL 500 PM...

A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR SOUTHWEST AND WEST CENTRAL
MISSISSIPPI FROM CARTHAGE TO COLUMBIA AND WEST TO THE MISSISSIPPI
RIVER.

THUNDERSTORMS ARE RAPIDLY INCREASING ACROSS SOUTH CENTRAL AND SOUTHWEST
MISSISSIPPI AND RESIDENTS IN THESE AREAS SHOULD BE PREIPARED TO TAKE
PROTECTIVE ACTION IF A WARNING.
Special weather statement, May 18, 1:25 PM CDT, 2 hours 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 125 PM CDT THU MAY 18 1989

 TORNADO WATCH NUMBER 267 IS IN EFFECT FOR PARTS OF SOUTH
MISSISSIPPI INCLUDING JONES AND JASPER COUN[TIES IN EAST
CENTRAL MISSISSIPPI UNTIL 500 PM THIS AFTERNOON.

AT 122 PN RADAR SHOWED A LARGE AREA OF THUNDERSTORNS ALONG AND
WEST OF A LINE FROM NEAR WATER VALLEY TO JACKSON TO LUMBERTON.
THESE STORMS WERE MOVING NORTHEAST AT 35 MPH. <<
Special weather statement, May 18, 1:40 PM CDT, 1 hour 52 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
140 PM CDT THU MAY 18 1989

...A TORNADO WATCH IS IN EFFECT FOR PORTIONS OF SOUTH MISSISSIPPI
   UNTIL 500 PM...

A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR SOUTHWEST AND WEST CENTRAL
MISSISSIPPI FROM CARTHAGE TO COLUMBIA AND WEST TO THE MISSISSIPPI
RIVER.

AT 130 PM JACKSON RADAR SHOWED SCATTERED VERY STRONG THUNDERSTORMS OVER
THE SOUTHERN THIRD OF MISSISSIPPI. SOME OF THE STRONGER THUNDERSTORMS
WHICH COULD POSSIBLY INTENSIFY TO SEVERE WERE LOCATED 10 MILES SOUTHEAST
OF CRYSTAL SPRINGS...JUST SOUTHEAST OF MONTICELLO..AND NORTH OF FAYETTE
MISSISSIPPI.

THE THUNDERSTORMS WERE MOVING TO THE NORTH AT 35| MPH.
Special weather statement, May 18, 3:03 PM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
300 PM CDT THU MAY 18 1989

...A TORNADO WATCH IS IN EFFECT FOR PORTIONS OF SOUTH MISSISSIPPI
   UNTIL 500 PM...

AT 255 PM...STRONG THUNDERSTORMS EXTENDED FROM NEAR PELAHATCHIE TO
HATTIESBURG. THESE STORMS ARE MOVING NORTHEAST AT 25 MILES AND WERE
PRODUCING VERY HEAVY RAINS.

OTHER THUNDERSTORMS WITH VERY HEAVY RAIN STRETCHED FROM NEAR LIBERTY
TO NORTH OF MEADVILLE.

OTHERWISE...A LARGE AREA OF RAIN AND THUNDERSTORMS COVERED MISSISSIPPI
WEST OF A MCCOMB-JACKSON-TUPELO LINE. THE RAIN AREA EXTENDED INTO
EASTERN LOUISIANA AND SOUTHEAST ARKANSAS. THE AREA WAS MOVING TO THE
EAST AT 10 MILES AN HOUR.
Special weather statement, May 18, 3:16 PM CDT, 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 315 PM CDT THU MAY 18 1989

 TORNADO WATCH NUMBER 267 IS IN EFFECT UNTIL 500 PM CDT.

AT 315 PM CDT MERIDIAN RADAR INDICATED AN AREA OF RAIN WITH
STRONG THUNDERSTORMS EXTENDED ALONG AND WEST OF A LINE FROM
MCLAIN TO MERIDIAN TO PONTOTOC MISSISSIPPI. THE AREA OF
PRECIPITATION WAS MOVING TOWARD THE EAST AT 15 MPH WHILE THE
THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MPH. THE STRONGEST
THUNDERSTORMS WERE FROM RALEIGH TO CAMP SHELBY.

THE THUNDERSTORMS WILL CONTAIN VERY HEAVY RAIN...STRONG
GUSTY WINDS AND POSSIBLY SOME SMALL HAIL. PERSONS IN AND CLOSE TO
THE WATCH AREA SHOULD BE VERY ALERT FOR THREATENING WEATHER. IF THE
THUNDERSTORMS BECOME ANY STRONGER WARNINGS MAY HAVE TO BE ISSUED. <<

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 1:07 PM CDTSevere Thunderstorm WarningJANClaiborne, Jefferson38 min
May 18, 1:58 PM CDTSevere Thunderstorm WarningJANSimpson32 min
May 18, 4:30 PM CDTFlash Flood WarningJANHinds90 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.