Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 2, NWS Jackson, MS

January 17, 1990Scott County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jan 17, 1990, 9:20 PM CST for Scott County, Mississippi. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Jan 17, 1990, 9:20 PM CST (03:20 UTC)
Expired
Jan 17, 1990, 9:45 PM CST
In force
25 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Scott 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, 3.3 hours before the alert went out and 52 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 1990-01-18Temperature 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 00:00Z on 1990-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 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
NaN m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 180321
SVRJAN
MSC123-180345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
920 PM CST WED JAN 17 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN CENTRAL MISSISSIPPI
          ...SCOTT
 
AT 915 PM CST...RADAR INDICATED A VERY STRONG THUNDERSTORM NEAR MORTON
MOVING EAST AT 30 MPH. THIS IS THE SAME STORM WHICH PRODUCED WIND
GUSTS OF 60 MPH AS IT MOVED THROUGH THE JACKSON AREA...AND IT HAS
REINTENSIFED DURING THE PAST FEW MINUTES. THE STORM IS ALSO LIKELY TO
PRODUCE HAIL AND HEAVY RAIN.
 
SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESSo OF 55 MPH...LARGE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF 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 17, 5:42 PM CST, 3 hours 38 minutes before
MSZ002-003-180100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
540 PM CST WED JAN 17 1990

...STRONG THUNDERSTORMS MOVING INTO THE DELTA OF MISSISSIPPI...

ANOTHER LINE OF STRONG THUNDERSTORMS WERE SITUATED OVER SOUTHEAST
ARKANSAS AND NORTHEAST LOUISIANA AT 540 PM. THESE THUNDERSTORMS WILL BE
MOVING INTO BOLIVAR..WASHINGTON...ISSAQUENA AND SHARKEY COUNTIES DURING
THE NEXT HOUR.

RESIDENTS IN THESE COUNTIES SHOULD BE ON THE ALERT FOR PERIODS OF HEAVY
RAINFALL...GUSTY SHIFTING WINDS...DANGEROUS LIGHTNING AND POSSIBLE SMALL
HAIL.
Special weather statement, Jan 17, 8:10 PM CST, 1 hour 10 minutes before
MSZ008-180330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
810 PM CST WED JAN 17 1990

...STRONG THUNDERSTORMS MOVING INTO CENTRAL MISSISSIPPI...

A LINE OF STRONG THUNDERSTORMS WAS SITUATED FROM NEAR WINONA TO JUST
EAST OF VICKSBURG AT 810 PM. SMALL HAIL WAS REPORTED WITH THESE
THUNDERSTORMS AS THEY MOVED THROUGH THE VICKSBURG AND BOLTON AREAS. ALSO
WIND GUSTS OF 30 MPH AND VERY HEAVY RAIN WERE OBSERVED.

RESIDENTS OF THE JACKSON METRO AREA CAN EXPECT PERIODS OF HEAVY
RAIN...GUSTY SHIFTING WINDS...DANGEROUS LIGHTNING AND POSSIBLE SMALL
HAIL DURING THE NEXT HOUR.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 17, 8:34 PM CSTSevere Thunderstorm WarningJANRankin36 min

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.