Alert archive / Mississippi / Tornado Warnings in 1989

Tornado Warning 2, NWS Jackson, MS

February 20, 1989Adams County, Jefferson County, Mississippi

NWS Jackson, MS issued this tornado warning at Feb 20, 1989, 2:25 PM CST for Adams County, Jefferson County, Mississippi. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Feb 20, 1989, 2:25 PM CST (20:25 UTC)
Expired
Feb 20, 1989, 3:15 PM CST
In force
50 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Adams County, MS, Jefferson 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, 8.4 hours before the alert went out and 132 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°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 202027
TORJAN
MSC001-063-202115-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
225 PM CST MON FEB 20 1989
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  315 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTHWEST MISSISSIPPI
          ...NORTHERN ADAMS...JEFFERSON
 
AT 225 PM CST...A SEVERE THUNDERSTORM LIKELY PRODUCING A TORNADO WAS
BEING DETECTED OVER EAST CENTRAL LOUISIANA ABOUT 15 MILES NORTHWEST OF
NATCHEZ MISSISSIPPI. THIS STORM WAS MOVING TO THE EAST-NORTHEAST AT 40
MILES AN HOUR. ON ITS PRESENT PATH THIS STORM WILL BE CROSSING THE
MISSISSIPPI RIVER BETWEEN NATCHEZ MS AND WATERPROOF LA WITHIN THE NEXT
30 MINUTES.
 
 
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.
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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, 20 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, 3:06 PM CSTTornado WarningJANClaiborne, Jefferson54 min
Feb 20, 3:47 PM CSTTornado WarningJANWarren43 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.