Alert archive / Mississippi / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 59, NWS Jackson, MS

April 20, 1992Covington County, Jefferson Davis County, Smith County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 20, 1992, 8:01 AM CDT for Covington County, Jefferson Davis County, Smith County, Mississippi. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 20, 1992, 8:01 AM CDT (13:01 UTC)
Expired
Apr 20, 1992, 8:45 AM CDT
In force
44 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Covington County, MS, Jefferson Davis County, MS, Smith County, MS

What was reported inside it

TimeReportWhereRemark
Apr 20, 8:30 AM CDTTornado F1Covington, MS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.0 hours before the alert went out and 77 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 1992-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1066 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 1992-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
1066 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
616 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.8

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, Apr 20, 3:13 AM CDT, 4 hours 48 minutes before
MSZALL-200910-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
310 AM CST MON APR 20 1992

... A TORNADO WATCH IS IN EFFECT FOR PORTIONS OF WESTERN AND NORTHERN
    MISSISSIPPI UNTIL 7 AM CDT THIS MORNING ...

...INTENSE THUNDERSTORMS OVER THE SOUTH DELTA...

AT 305 AM...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL
OVER EASTERN HUMPHREYS COUNTY MOVING TO THE NORTHEAST AT 30 MPH.
THESE STORMS MAY ALSO CONTAIN STRONG GUSTY WINDS.  THE THUNDERSTORMS
WILL BE MOVING INTO HOLMES AND SOUTHERN LEFLORE COUNTIES BY 330 AM.

OTHER THUNDERSTORMS WITH HEAVY RAINFALL CONTINUED OVER CENTRAL
AND NORTHEAST LOUISIANA AND WILL LIKELY MOVE INTO WEST CENTRAL AND
SOUTHWEST MISSISSIPPI BEFORE DAYBREAK.
Special weather statement, Apr 20, 3:39 AM CDT, 4 hours 22 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013-
ALZ004-008-013-016-200930-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
335 AM CDT MON APR 20 1992

 ... A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF NORTHERN AND
     WESTERN MISSISSIPPI UNTIL 7 AM CDT THIS MONDAY MORNING ...

 ... THUNDERSTORMS DECREASING OVER THE DELTA...AND INCREASING OVER
     NORTHEAST LOUISIANA...

AT 325 AM CDT...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL
OVER SOUTHERN LEFLORE AND EXTREME WESTERN HOLMES COUNTIES MOVING TO THE
NORTHEAST AT 30 MPH.  BRIEF GUSTY WINDS CAN ALSO BE EXPECTED WITH THESE
THUNDERSTORMS. THE STORMS HAVE WEAKENED SLIGHTLY OVER THE PAST HOUR.

ANOTHER AREA OF THUNDESTORMS WAS INCREASING OVER CENTRAL AND NORTHEAST
LOUISIANA IN THE WINNSBORO AREA AND JUST EAST OF ALEXANDRIA.  THESE
STORMS ARE ALSO MOVING NORTHEAST AND WILL LIKELY AFFECT WEST CENTRAL
AND SOUTHWEST MISSISSIPPI BEFORE DAYBR
EAK.
Special weather statement, Apr 20, 4:11 AM CDT, 3 hours 50 minutes before
MSZALL-201010-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
410 AM CST MON APR 20 1992

... A TORNADO WATCH IS IN EFFECT FOR NORTH AND WESTERN MISSISSIPPI
    UNTIL 7 AM CDT THIS MORNING ...

AT 405 AM...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL
OVER EXTREME NORTHEAST LOUISIANA BETWEEN LAKE PROVIDENCE AND TALLULAH.
THE STORMS WERE MOVING TO THE NORTHEAST AT 30 TO 35 MPH AND WILL MOVE
INTO WEST CENTRAL MISSISSIPPI DURING THE NEXT HOUR.  BRIEF GUSTY WINDS
AND POSSIBLY SMALL HAIL CAN BE EXPECTED WITH THESE STORMS.  OTHER
THUNDERSTORMS WERE SCATTERED OVER SOUTHWEST MISSISSIPPI BETWEEN
NATCHEZ AND WOODVILLE.

THE THUNDERSTORMS PREVIOUSLY OVER THE DELTA HAVE CONTINXUED TO WEAKEN
AND HAVE MOVED INTO WESTERN CARROLL COUNTY.
Special weather statement, Apr 20, 4:37 AM CDT, 3 hours 24 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013-
ALZ004-008-013-016-201030-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
435 AM CDT MON APR 20 1992

 ... A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF NORTHERN AND
     WESTERN MISSISSIPPI UNTIL 7 AM CDT THIS MONDAY MORNING ...

AT 430 AM CDT...RADAR INDICATED THUNDERSTORMS HAD MOVED INTO WEST
CENTRAL MISSISSIPPI.  THE MOST INTENSE STORMS WERE OVER NORTHERN WARREN
AND SOUTHERN ISSAQUENA COUNTIES.  OTHER THUNDESTORMS WITH VERY HEAVY
RAINFALL WERE INDICATED FROM ROLLING FORK TO ST. JOSEPH LOUISIANA.
THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 30 MPH AND WILL
MOVE THROUGH WEST CENTRAL AND SOUTHWEST MISSISSIPPI DURING THE NEXT
HOUR.  RESIDENTS OF THE AREA SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER.
Special weather statement, Apr 20, 7:57 AM CDT, 4 minutes before
MSZALL-201400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
755 AM CDT MON APR 20 1992

...TORNADO WATCH 157 FOR MOST OF SOUTHERN AND PARTS OF CENTRAL
MISSISSIPPI TILL 1 PM...

AT 755 AM CDT...A LINE OF INTENSE THUNDERSTORMS WAS MOVING ACROSS
SOUTH-CENTRAL MISSISSIPPI FROM ABOUT DLO TO PRENTISS TO WEST OF
COLUMBIA.

THE GREATEST THREAT OF SEVERE WEATHER WILL LIKELY BE MOVING FROM
SOUTH-CENTRAL MISSISSIPPI INTO SOUTHEAST AND EAST-CENTRAL
MISSISSIPPI DURING THE NEXT COUPLE OF HOURS.

THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 35 MILES AN HOUR.
Special weather statement, Apr 20, 8:00 AM CDT, 1 minute before
MSZ009-012-201400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
759 AM CDT MON APR 20 1992

...TORNADO WATCH NUMBER 157 WHICH INCLUDES CLARKE...JASPER...NEWTON...
AND JONES COUNTIES IN EAST CENTRAL MISSISSIPPI REMAINS IN EFFECT UNTIL
100 PM CDT...

AT 750 AM CDT RADAR INDICATED A LINE OF VERY STRONG THUNDERSTORMS WEST
OF A LINE FROM COLUMBIA TO NEWTON TO AMORY MISSISSIPPI.  THE STRONGEST
THUNDERSTORMS WERE INDICATED BETWEEN D'LO AND TYLERTOWN MISSISSIPPI.
THESE THUNDERSTORMS HAVE HAD A HISTORY OF PRODUCING SEVERE WEATHER.
THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 40 MPH.

THE STRONGEST THUNDERSTORMS SHOULD MOVE INTO JASPER AND JONES COUNTIES
WITHIN THE NEXT HOUR.  PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD
REMAIN ALERT FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 7:01 PM CDTSevere Thunderstorm WarningJANCopiah, Hinds29 min
Apr 19, 7:35 PM CDTSevere Thunderstorm WarningJANHinds25 min
Apr 20, 5:10 AM CDTSevere Thunderstorm WarningJANAmite65 min
Apr 20, 5:17 AM CDTTornado WarningJANLincoln43 min
Apr 20, 5:33 AM CDTSevere Thunderstorm WarningJANPike42 min
Apr 20, 6:03 AM CDTTornado WarningJANLawrence, Lincoln42 min
Apr 20, 6:22 AM CDTSevere Thunderstorm WarningJANHinds68 min
Apr 20, 6:47 AM CDTSevere Thunderstorm WarningJANLawrence, Simpson58 min
Apr 20, 6:54 AM CDTSevere Thunderstorm WarningJANRankin66 min
Apr 20, 7:03 AM CDTTornado WarningJANSimpson57 min
Apr 20, 7:29 AM CDTSevere Thunderstorm WarningJANJefferson Davis61 min
Apr 20, 7:53 AM CDTTornado WarningJANMarion37 min
Apr 20, 8:07 AM CDTTornado WarningJANJefferson Davis38 min
Apr 20, 8:29 AM CDTSevere Thunderstorm WarningJANJasper, Newton61 min
Apr 20, 8:58 AM CDTTornado WarningJANJasper, Newton32 min
Apr 20, 9:05 AM CDTSevere Thunderstorm WarningJANForrest, Lamar40 min
Apr 20, 9:05 AM CDTTornado WarningJANClarke, Lauderdale55 min
Apr 20, 9:42 AM CDTTornado WarningJANKemper48 min
Apr 20, 9:59 AM CDTTornado WarningJANChoctaw46 min
Apr 20, 10:01 AM CDTTornado WarningJANSumter44 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1992Every severe thunderstorm warning in 1992

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.