Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 3, NWS Jackson, MS

January 20, 1990Hinds County, Madison County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jan 20, 1990, 3:30 AM CST for Hinds County, Madison County, Mississippi. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jan 20, 1990, 3:30 AM CST (09:30 UTC)
Expired
Jan 20, 1990, 4:15 AM CST
In force
45 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Hinds County, MS, Madison 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 00:00Z, 9.5 hours before the alert went out and 21 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 00:00Z on 1990-01-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 00:00Z on 1990-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
929 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
253 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 200931
SVRJAN
MSC049-089-201015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
330 AM CST SAT JAN 20 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN CENTRAL MISSISSIPPI
          ...HINDS...MADISON
 
AT 325 AM CST A LINE OF THUNDERSTORMS WAS MOVING INTO THE WESTERN
SECTIONS OF HINDS AND MADISON COUNTIES. THESE THUNDERSTORMS WERE
MOVING TO THE NORTHEAST AT AROUND 40 MPH.
 
SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR O?F YOUR HOME OR BUSINESS.
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What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jan 19, 9:56 PM CST, 5 hours 34 minutes before
MSZALL-200900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1000 PM CST FRI JAN 19 1990

AT 1000 PM...AND AREA OF SCATTERED THUNDERSTORMS...SOME WITH HEAVY RAIN
...WERE MOVING INTO NORTHWEST MISSISSIPPI. THESE THUNDERSTORMS WERE
PART OF LARGE BAND OF PRECIPITATION THAT EXTENDED THROUGH THE LOWER AND
MID MISSISSIPPI VALLEY.

THE THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE WESTERN HALF OF
MISSISSIPPI LATER TONIGHT. A FEW OF THE THUNDERSTORMS COULD BECOME
SEVERE WITH LOCALLY HEAVY RAINFALL.

TORNADO WATCHES HAVE BEEN IN EFFECT THIS EVENING FOR LOUISIANA AND
SOUTHERN ARKANSAS. WIND DAMAGE HAS OCCURRED WITH THESE THUNDERSTORMS
IN NORTH CENTRAL LOUSIANA.

PERSONS IN WEST MISSISSIPPI SHOULD REMAIN WEATHER CONSCIOUS FOR THE
REMAINDER OF TONIGHT AND LISTEN FOR LATER STATEMENTS.
Special weather statement, Jan 19, 11:56 PM CST, 3 hours 34 minutes before
MSZALL-200630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1150 PM CST FRI JAN 19 1990

SHOWERS AND THUNDERSTORMS CONTINUE TO SPREAD INTO WEST CENTRAL AND
NORTHWEST MISSISSIPPI.

AT 1146 PM CST THE STRONGEST STORMS WERE WERE SCATTERED OVER NORTHEAST
LOUISIANA. A CLUSTER OF STRONG STORMS WAS LOCATED NEAR THE MISSISSIPPI
RIVER JUST NORTH OF LAKE PROVIDENCE LOUISIANA.

THIS CLUSTER OF STORNS WILL MOVE ACROSS THE MISSISSIPPI RIVER INTO
NORTHERN ISSAQUENA COUNTY WITHIN THE NEXT 15 MINUTES.

BRIEF PERIODS OF HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLE HAIL WILL
ACCOMPANY SOME OF THESE STORMS AS THEY MOVE TO THE NORTHEAST AT 45 MPH.

PERSONS IN THE DELTA SHOULD REMAIN ALERT...AND BE PREPARED TO TAKE ACTION
IF THREATENING WEATHER APPROACHES OR A WARNING IS ISSUED.
Special weather statement, Jan 20, 1:10 AM CST, 2 hours 20 minutes before
MSZALL-200735-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
105 AM CST SAT JAN 20 1990

SCATTERED THUNDERSTORMS CONTINUE TO SPREAD INTO NORTHWEST AND WEST
CENTRAL MISSISSIPPI.

AT 100 AM CST THE STRONGEST STORMS IN MISSISSIPPI WERE OVER NORTHERN
ISSAQUENA AND SOUTHERN WASHINGTON COUNTIES...AND EXTENDED ACROSS THE
MISSISSIPPI RIVER INTO NORTHEAST LOUISIANA.

SOME OF THE STRONGER STORMS WILL BE ACCOMPANIED BY STRONG GUSTY WINDS
...HEAVY RAIN AND POSSIBLE HAIL AS THEY MOVE TO THE NORTHEAST AT 40
MPH.
Special weather statement, Jan 20, 2:08 AM CST, 1 hour 22 minutes before
MSZALL-200835-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
205 AM CST SAT JAN 20 1990

AT 200 AM CST A LARGE AREA OF RAIN AND SCATTERED THUNDERSTORMS COVERED
NORTHWEST AND WEST CENTRAL MISSISSIPPI...AND EXTENDED INTO NORTHEAST
LOUISIANA.

THE STRONGER THUNDERSTORMS IN THIS AREA EXTENDED FROM WASHINGTON AND
ISSAQUENA COUNTIES...AND ACROSS THE MISSISSIPPI RIVER INTO NORTHEAST
LOUISIANA.

THE STRONGER STORMS OVER NORTHEAST LOUISIANA WERE APPROACHING THE
MISSISSIPPI RIVER...AND WILL SPREAD INTO WARREN...CLABORNE AND
JEFFERSON COUNTIES WITHIN THE NEXT HOUR.

MANY OF THESE STORMS WILL PRODUCE VERY HEAVY RAIN...STRONG GUSTY WINDS
AND POSSIBLE HAIL AS THEY MOVE TO THE NORTHEAST AT 40 MPH.
Special weather statement, Jan 20, 3:17 AM CST, 13 minutes before
MSZALL-201030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
310 AM CST SAT JAN 20 1990

AT 305 AM CST A LARGE AREA OF RAIN AND SCATTERED THUNDERSTORMS COVERED
MUCH OF NORTH AND WEST MISSISSIPPI.

THE STRONGER THUNDERSTORMS IN THIS AREA WERE IN A BAND EXTENDING FROM
PORT GIBSON TO EDWARDS TO THE SOUTH OF YAZOO CITY.

THIS BAND OF THUNDERSTORMS WAS MOVING TO THE SOUTHEAST AT AROUND 15 MPH
...AND WILL MOVE INTO THE JACKSON METROPOL&ITIAN AREA IN ABOUT AN HOUR.

VERY HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLE HAIL WILL ACCOMPANY
THESE THUNDERSTORMS AS THEY MOVE INTO THE JACKSON AREA...SOME FLOODING
OF UNDERPASSES AND AREAS OF POOR DRAINAGE CAN BE EXPECTED

Nearby

Severe Thunderstorm Warnings in Mississippi, 1990Every severe thunderstorm warning 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.