Alert archive / Mississippi / Tornado Warnings in 1990

Tornado Warning 40, NWS Jackson, MS

September 8, 1990Washington County, Mississippi

NWS Jackson, MS issued this tornado warning at Sep 8, 1990, 4:24 PM CDT for Washington County, Mississippi. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Sep 8, 1990, 4:24 PM CDT (21:24 UTC)
Expired
Sep 8, 1990, 5:00 PM CDT
In force
36 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Washington 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, 9.4 hours before the alert went out and 134 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 1990-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 930 joules per kilogram.LCLLFCEL10008507005003002001001 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 1990-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 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
930 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
1257 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 082124
TORJAN
MSC151-082200-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
424 PM CDT SAT SEP 8 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST MISSISSIPPI
 
   ...WASHINGTON COUNTY
 
AT 420 PM CDT...WASHINGTON COUNTY SHERIFFS OFFICE REPORTED SEVERAL
SIGHTINGS OF A FUNNEL CLOUD NEAR THE MISSISSIPPI RIVER BETWEEN EUDORA
ARKANSAS AND GREENVILLE MISSISSIPPI...NEAR THE COMMUNITY OF JAMES.
JACKSON RADAR INDICATED A VERY INTENSE THUNDERSTORM IN THIS AREA
MOVING EAST AT 15 MILES AN HOUR.
 
 
 
IF YOU ARE 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
Sep 8, 5:31 PM CDTSevere Thunderstorm WarningJANHumphreys29 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.