Alert archive / Mississippi / Tornado Warnings in 1990

Tornado Warning 29, NWS Jackson, MS

April 27, 1990Simpson County, Mississippi

NWS Jackson, MS issued this tornado warning at Apr 27, 1990, 2:09 PM CDT for Simpson County, Mississippi. It was in force for 11 min.

The area

The counties it named.

The facts

Issued
Apr 27, 1990, 2:09 PM CDT (19:09 UTC)
Expired
Apr 27, 1990, 2:20 PM CDT
In force
11 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Simpson 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, 7.2 hours before the alert went out and 48 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 1990-04-27Temperature 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 1990-04-27The 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
-5 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 271909
TORJAN
MSC127-129-271945-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
209 PM CDT FRI APR 27 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  245 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSISSIPPI
 
   ...NORTHEASTERN SIMPSON COUNTY...SMITH COUNTY
 
AT 206 PM CDT...JACKSON RADAR INDICATED A TORNADO OVER NORTHEASTERN
SIMPSON COUNTY...5 MILES NORTH OF MAGEE. TREE DAMAGE HAS ALREADY BEEN
REPORTED WITH THIS STORM. THE STORM WAS MOVING TO THE NORTH AT 25
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 ST{URDY 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
Apr 27, 2:09 PM CDTTornado WarningJANSmith36 min
Apr 27, 2:17 PM CDTTornado WarningJANRankin28 min
Apr 27, 2:38 PM CDTSevere Thunderstorm WarningJANMadison, Yazoo37 min
Apr 27, 2:46 PM CDTTornado WarningJANRankin, Scott29 min
Apr 27, 3:03 PM CDTSevere Thunderstorm WarningJANHolmes42 min
Apr 27, 3:18 PM CDTTornado WarningJANLeake, Madison42 min
Apr 27, 3:18 PM CDTTornado WarningJANScott32 min
Apr 27, 3:37 PM CDTFlash Flood WarningJANHinds2 hr
Apr 27, 4:02 PM CDTTornado WarningJANAttala43 min
Apr 27, 4:09 PM CDTTornado WarningJANSimpson36 min
Apr 27, 4:46 PM CDTTornado WarningJANCarroll29 min
Apr 27, 4:53 PM CDTSevere Thunderstorm WarningJANNewton37 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.