Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 126, NWS Jackson, MS

May 21, 1990Lauderdale County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 21, 1990, 12:10 PM CDT for Lauderdale County, Mississippi. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
May 21, 1990, 12:10 PM CDT (17:10 UTC)
Expired
May 21, 1990, 1:00 PM CDT
In force
50 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Lauderdale 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, 5.2 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 1990-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2059 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 1990-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 square meters per square second.193958Sfc1 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
2059 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
558 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, May 21, 10:11 AM CDT, 1 hour 59 minutes before
MSZ009-012-ALZ008-013-211600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
1005 AM CDT MON MAY 21 1990

THE SEVERE THUNDERSTORM WARNINGS FOR WINSTON AND NOXUBEE COUNTIES
IN EAST CENTRAL MISSISSIPPI HAVE EXPIRED AND ARE NO LONGER IN EFFECT.

SEVERE THUNDERSTORM WATCH NUMBER 292 IN EFFECT UNTIL 100 PM CDT AND
SEVERE THUNDERSTORM WATCH NUMBER 293 IN EFFECT UNTIL 200 PM CDT.

AT 10 AM CDT MERIDIAN RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
WITH VERY HEAVY RAIN EXTENDED FROM TUSCALOOSA ALABAMA WESTWARD TO MACON
TO YAZOO CITY MISSISSIPPI. THE LINE WAS MOVING SLOWLY SOUTHEAST
AS THE INDIVIDUAL THUNDERSTORMS MOVED EAST AT 35 MPH. COVERAGE AND
INTENSITY CHANGED LITTLE DURING T.HE PAST HOUR.
SEVERAL REPORTS OF VERY HEAVY RAIN ASSOCIATED WITH THE LINE OF
THUNDERSTORMS HAVE BEEN RECEIVED. AS THE LINE IS MOVING VERY SLOW...
IF THUNDERSTORMS CONTINUE TO DEVELOPE ALONG THE LINE FLASH FLOODING
COULD OCCUR. <<
Special weather statement, May 21, 10:57 AM CDT, 1 hour 13 minutes before
MSZALL-211700-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
1055 AM CDT MON MAY 21 1990

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF NORTH AND
MUCH OF CENTRAL MISSISSIPPI UNTIL 100 PM CDT...

AT 1045 AM CDT...A LINE OF THUNDERSTORMS ACROSS CENTRAL MISSISSISSIPPI
FROM LOUISVILLE TO CARTHAGE TO JACKSON TO VICKSBURG.  HAIL AND HEAVY
RAIN ARE POSSIBLE ALONG THIS LINE.

A WIND GUST LINE HAS DEVELOPED AHEAD OF THE THUNDERSTORM LINE.  IT
EXTENDS FROM MACON TO BRANDON TO SOUTH OF VICKSBURG.  WIND GUSTS NEAR
50 MILES AN HOUR ARE POSSIBLE ALMOST ANYWHERE ALONG THIS GUST LINE.

DURING THE PAST HOUR...WIND GUSTS NEAR 50 MILES AN HOUR HAVE BEEN
REPORTED AT THE ROSS BARNETT RESERVOIR NORTHEAST OF JACKSON.

THE LINE OF THUNDERSTORMS IS MOVING SOUTHEAST AROUND 30 MILES AN HOUR
AND THE GUST LINE IS PROBABLY MOVING AROUND THE SAME SPEED.  THE
INDIVIDUAL STORMS ARE MOVING EAST AROUND 35 MILES AN HOUR.
Local storm report, May 21, 11:18 AM CDT, 52 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE JACKSON MS
1115 AM CDT MON MAY 21 1990

A PARTIAL LIST OF STORM REPORTS RECEIVED BY NWS JACKSON.  MORE WILL
PROBABLY FOLLOW LATER.

845 AM...NUMEROUS TREES DOWN WEST OF LEXINGTON.  (MP&L)

850 AM...MARBLE SIZE HAIL NORTHEAST OF LEXINGTON.  (SPOTTER)

900 AM...VERY HEAVY RAIN AT WEST.  (SPOTTER)

1045 AM...WIND GUSTS NEAR 50 MPH AT ROSS BARNETT RESERVOIR NORTHEAST
          OF JACKSON.

1050 AM...WIND GUFSTS NEAR 40 MPH AT HAWKINS FIELD IN JACKSON.

1055 AM...WIND GUSTS NEAR 40 MPH AT THOMPSON FIELD IN JACKSON.
Local storm report, May 21, 11:20 AM CDT, 50 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE JACKSON MS
1115 AM CDT MON MAY 21 1990

A PARTIAL LIST OF STORM REPORTS RECEIVED BY NWS JACKSON.  MORE WILL
PROBABLY FOLLOW LATER.

845 AM...NUMEROUS TREES DOWN WEST OF LEXINGTON.  (MP&L)

850 AM...MARBLE SIZE HAIL NORTHEAST OF LEXINGTON.  (SPOTTER)

900 AM...VERY HEAVY RAIN AT WEST.  (SPOTTER)

1045 AM...WIND GUSTS NEAR 50 MPH AT ROSS BARNETT RESERVOIR NORTHEAST
          OF JACKSON.

1050 AM...WINLD GUSTS NEAR 40 MPH AT HAWKINS FIELD IN JACKSON.

1055 AM...WIND GUSTS NEAR 40 MPH AT THOMPSON FIELD IN JACKSON.
<
1045 AM...TREES DOWN NEAR CARTHAGE.

1115 AM...PEA SIZE HAIL IN JACKSON.
Local storm report, May 21, 11:41 AM CDT, 29 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
1135 AM CDT MON MAY 21 1990

1134 AM CDT...NESHOBA COUNTY C. D. REPORTED NICKEL SIZE HAIL
              2 MILES SOUTHEAST OF PHILADELPHIA IN NESHOBA
              COUNTY MISSISSIPPI.
Special weather statement, May 21, 12:04 PM CDT, 6 minutes before
MSZALL-211800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1203 PM CDT MON MAY 21 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF CENTRAL AND SOUTH
MISSISSIPPI UNTIL 500 PM...

AT NOON...A LINE OF STRONG THUNDERSTORMS CONTINUES ACROSS CENTRAL
MISSISSIPPI FROM SOUTH OF DEKALB TO FORREST TO FLORENCE AND TO THE
MISSISSIPPI RIVER NORTHWEST OF PORT GIBSON.  THE HEAVIEST STORMS ALONG
THIS LINE WERE LOCATED JUST ACROSS THE RIVER FROM PORT GIBSON...AND
WILL BE MOVING INTO PORT GIBSON BEFORE 1230 PM.  THESE STORMS MAY
PRODUCE HAIL AND VERY HEAVY RAIN IN A SHORT PERIOD OF TIME.

A WIND GUST LINE CONTINUES ROUGHLY 10 TO 15 MILES AHEAD OF THE
THUNDERSTORM LINE.  WIND GUSTS AROUND 50 MILES AN HOUR ARE POSSIBLE
ALMOST ANYWHERE AHEAD OF THIS LINE.

BOTH THE THUNDERSTORM LINE AND THE WIND GUST LINE ARE MOVING SOUTHEAST
AROUND 25 TO 30 MILES AN HOUR.  THE INDIVIDUAL THUNDERSTORMS ARE
MOVING EAST AT 35 TO 40 MILES AN HOUR.

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:55 AM CDTSevere Thunderstorm WarningJANLeflore50 min
May 21, 8:21 AM CDTSevere Thunderstorm WarningJANWinston54 min
May 21, 8:29 AM CDTSevere Thunderstorm WarningJANHolmes31 min
May 21, 8:51 AM CDTSevere Thunderstorm WarningJANNoxubee54 min
May 21, 10:29 AM CDTSevere Thunderstorm WarningJANWinston46 min
May 21, 10:40 AM CDTSevere Thunderstorm WarningJANNoxubee65 min
May 21, 10:52 AM CDTSevere Thunderstorm WarningJANNeshoba68 min
May 21, 11:52 AM CDTSevere Thunderstorm WarningJANNewton53 min
May 21, 12:15 PM CDTSevere Thunderstorm WarningJANClaiborne45 min
May 21, 1:02 PM CDTSevere Thunderstorm WarningJANJasper43 min
May 21, 1:08 PM CDTSevere Thunderstorm WarningJANLincoln37 min
May 21, 2:19 PM CDTSevere Thunderstorm WarningJANWayne26 min
May 21, 11:26 AM CDTSevere Thunderstorm WarningJANSumter34 min
May 21, 12:52 PM CDTSevere Thunderstorm WarningJANChoctaw53 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.