Alert archive / Mississippi / Tornado Warnings in 1990

Tornado Warning 48, NWS Jackson, MS

December 20, 1990Rankin County, Mississippi

NWS Jackson, MS issued this tornado warning at Dec 20, 1990, 4:58 PM CST for Rankin County, Mississippi. It was in force for 24 min.

The area

The counties it named.

The facts

Issued
Dec 20, 1990, 4:58 PM CST (22:58 UTC)
Expired
Dec 20, 1990, 5:22 PM CST
In force
24 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Rankin 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, 11.0 hours before the alert went out and 14 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 1990-12-20Temperature 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 1990-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 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
572 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 202259
TORJAN
MSC121-202345-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
458 PM CST THU DEC 20 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSISSIPPI
 
   ...RANKIN COUNTY
 
AT 500 PM A TORNADO WAS REPORTED BY THE PUBLIC JUST NORTH OF FLORENCE
MOVING NORTHEAST AT 40 MPH TOWARD PEARL.
 
 
IF YOU AxRE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS IN AN
INTERIOR ROOM ON THE LOWEST FLOOR.  GET UNDER STURDY FURNITURE.
USE PILLOWS OR CUSHIONS TO COVER YOUR HEAD.
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 20, 2:41 PM CSTSevere Thunderstorm WarningJANYazoo34 min
Dec 20, 2:58 PM CSTTornado WarningJANYazoo32 min
Dec 20, 3:09 PM CSTTornado WarningJANMadison36 min
Dec 20, 3:47 PM CSTTornado WarningJANCopiah28 min
Dec 20, 4:16 PM CSTTornado WarningJANHinds, Rankin29 min
Dec 20, 4:30 PM CSTSevere Thunderstorm WarningJANAttala30 min
Dec 20, 4:41 PM CSTTornado WarningJANHinds49 min
Dec 20, 4:52 PM CSTTornado WarningJANNoxubee53 min
Dec 20, 5:01 PM CSTSevere Thunderstorm WarningJANChoctaw44 min

Nearby

Tornado Warnings in Mississippi, 1990Every tornado warning in 1990Tornadoes 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; the sounding from the Mesonet's radiosonde archive.