Alert archive / Mississippi / Tornado Warnings in 1989

Tornado Warning 4, NWS Jackson, MS

February 20, 1989Warren County, Mississippi

NWS Jackson, MS issued this tornado warning at Feb 20, 1989, 3:47 PM CST for Warren County, Mississippi. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Feb 20, 1989, 3:47 PM CST (21:47 UTC)
Expired
Feb 20, 1989, 4:30 PM CST
In force
43 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Warren 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, 9.8 hours before the alert went out and 73 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 1989-02-20Temperature 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, Jackson, MS at 12:00Z on 1989-02-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 247 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
600 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
247 m²/s²
0-3 km storm-relative helicity
311 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 202152 COR
TORJAN
MSC149-202230-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING  ...CORRECTED...
NATIONAL WEATHER SERVICE JACKSON MS
347 PM CST MON FEB 20 1989

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  430 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...

IN WEST CENTRAL MISSISSIPPI
          ...WARREN

AT 345 PM CST...A SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO WAS
CROSSING THE MISSISSIPPI RIVER INTO WESTERN WARREN COUNTY ABOUT 20
MILES SOUTHWEST OF VICKSBURG. THIS STORM COULD MOVE INTO THE VICKSBURG
AREA WITHIN THE NEXT 10 TO 20 MINUTES. THIS STORM ALSO HAS A HISTORY OF
PRODUCING A TORNADO BACK OVER LOUISIANA A FEW HOURS AGO. MOVEMENT WAS
TO THE NORTHAEAST AT 35 MILES AN HOUR.
<
THIS IS A DANGEROUS STORM.  MOVE QUICKLY TO UNDERGROUND SHELTER IF
AVAILABLE.  OTHERWISE...GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR.
AVOID WINDOWS.  LEAVE CARS AND MOBILE HOMES FOR A STURDY BUILDING.
<

What forecasters said that day

The local office's own words before this tornado 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 20, 2:05 PM CST, 1 hour 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
205 PM CST MON FEB 20 1989

...TORNADO WATCH NUMBER 5 IN EFFECT UNTIL 8 PM FOR A SMALL PART OF
WEST CENTRAL AND SOUTHWEST MISSISSIPPI...

AT 200 PM CST...JACKSON RADAR INDICATED A VERY INTENSE THUNDERSTORM
OVER EAST CENTRAL LOUISIANA...NEAR JONESVILLE IN CATAHOULA PARISH.
THIS STORM HAS A HISTORY OF BEING TORNADIC AND THE WEATHER SERVICE
OFFICE IN BATON ROUGE HAS ISSUED A TORNADO WARNING UNTIL 250 PM FOR
CATAHOULA AND NORTHERN CONCORDIA PARISHES.

THE STORM WAS STILL ABOUT 25 MILES WEST OF THE MISSISSIPPI RIVER AS
IT MOVED TO THE NORTHEAST AT 40 MILES AN HOUR.  THE PRESENT TRACK
WOULD TAKE THE STORM TO NEAR THE MISSISSIPPI RIVER JUST WEST OF
PORT GIBSON AROUND 3 PM.  IF THE STORM CONTINUES TO BE INTENSE...
A WARNING WILL BE NECESSARY AS IT APPROACHES SOUTHWEST MISSISSIPPI.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 2:25 PM CSTTornado WarningJANAdams, Jefferson50 min
Feb 20, 3:06 PM CSTTornado WarningJANClaiborne, Jefferson54 min
Feb 20, 4:19 PM CSTTornado WarningJANIssaquena41 min
Feb 20, 4:29 PM CSTTornado WarningJANWarren46 min
Feb 20, 5:15 PM CSTTornado WarningJANHinds, Warren, Yazoo45 min
Feb 20, 5:45 PM CSTTornado WarningJANMadison30 min
Feb 20, 5:58 PM CSTTornado WarningJANYazoo32 min

Nearby

Tornado Warnings in Mississippi, 1989Every tornado warning in 1989Tornadoes 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.