Alert archive / Mississippi / Tornado Warnings in 1990

Tornado Warning 45, NWS Jackson, MS

December 20, 1990Hinds County, Rankin County, Mississippi

NWS Jackson, MS issued this tornado warning at Dec 20, 1990, 4:16 PM CST for Hinds County, Rankin County, Mississippi. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Dec 20, 1990, 4:16 PM CST (22:16 UTC)
Expired: Dec 20, 1990, 4:45 PM CST
In force: 29 min
Issued by: NWS Jackson, MS
Area: Whole counties

Counties Hinds County, MS, Rankin County, MS

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Dec 20, 4:27 PM CST	Tornado F0	Hinds, MS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.3 hours before the alert went out and 12 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 202217
TORJAN
MSC049-121-202245-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
416 PM CST THU DEC 20 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  445 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSISSIPPI
 
   ...SOUTHEASTERN HINDS COUNTY...RANKIN COUNTY
 
AT 415 PM CST RADAR INDICATED A TORNADO JUST NORTH OF CRYSTAL SPRINGS
MOVING TO THE NORTHEAST AT 45 MPH. THE TORNADO WILL BE MOVNG TOWARD
FLORENCE MISSISSIPPI.
 
SPOTTERES HAVE BEEN WATCHING THIS TORNADO AS IT IS TOUCHES DOWN AND
THEN LIFTS UP.
 
 
IF YOU ARE OUTSIDE...SEEK SHELTER IN A STURDY BUILDING.  AS A
LAST RESORT...SEEK SHELTER 5IN A 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.

Issued	Product	Office	Counties	Lasted
Dec 20, 2:41 PM CST	Severe Thunderstorm Warning	JAN	Yazoo	34 min
Dec 20, 2:58 PM CST	Tornado Warning	JAN	Yazoo	32 min
Dec 20, 3:09 PM CST	Tornado Warning	JAN	Madison	36 min
Dec 20, 3:47 PM CST	Tornado Warning	JAN	Copiah	28 min
Dec 20, 4:30 PM CST	Severe Thunderstorm Warning	JAN	Attala	30 min
Dec 20, 4:41 PM CST	Tornado Warning	JAN	Hinds	49 min
Dec 20, 4:52 PM CST	Tornado Warning	JAN	Noxubee	53 min
Dec 20, 4:58 PM CST	Tornado Warning	JAN	Rankin	24 min
Dec 20, 5:01 PM CST	Severe Thunderstorm Warning	JAN	Choctaw	44 min

Nearby

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