Alert archive / Mississippi / Tornado Warnings in 1990

Tornado Warning 47, NWS Jackson, MS

December 20, 1990Noxubee County, Mississippi

NWS Jackson, MS issued this tornado warning at Dec 20, 1990, 4:52 PM CST for Noxubee County, Mississippi. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Dec 20, 1990, 4:52 PM CST (22:52 UTC)
Expired
Dec 20, 1990, 5:45 PM CST
In force
53 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Noxubee 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

Centreville/Bibb, AL (KCKL), launched 12:00Z, 10.9 hours before the alert went out and 130 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, Centreville/Bibb, AL 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, Centreville/Bibb, AL at 12:00Z on 1990-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
544 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMEI 202252
TORMEI
MSC103-202345-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MERIDIAN MS
452 PM CST THU DEC 20 1990
 
THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...NOXUBEE COUNTY
 
AT 450 PM CST RADAR SHOWED A POSSIBLE TORNADO 4 MILES SOUTHWEST OF
MACON MOVING NORTHEAST AT 35 MPH.
 
GROUND SPOTTElR ALSO STATES POSIBILE TORNADO.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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, 4:58 PM CSTTornado WarningJANRankin24 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.