Alert archive / Mississippi / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 347, NWS Jackson, MS

November 19, 1991Madison County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Nov 19, 1991, 10:24 PM CST for Madison County, Mississippi. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Nov 19, 1991, 10:24 PM CST (04:24 UTC)
Expired
Nov 19, 1991, 11:05 PM CST
In force
41 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Madison County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.4 hours before the alert went out and 35 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 1991-11-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 898 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 1991-11-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 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
898 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
918 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

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, Nov 19, 6:46 PM CST, 3 hours 38 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013-
ALZ004-008-013-016-200140-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
 635 PM CST TUE NOV 20 1991

 TORNADO WATCH IN EFFECT FOR WEST MISSISSIPPI UNTIL 1100 PM...

AT 627 PM JACKSON WEATHER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALLOCCURRING IN A BROKEN LINE FROM ABOUT 20 MILES NORTH OF PINE BLUFF ARKANSAS...
TO THE VICINITY OF MONROE LOUISIANA...SOUTHWARD TO THE VICINITY OF MORROW
AND BUNKIE IN EAST LOUISIANA.  SOME PRELIMINARY REPORTS OF VERY HEAVY RAINFALL
AND HAIL HAVE BEEN REPORTED DURING THE PAST FEW HOURS FROM THESE THUNDERSTORMS.

THIS LINE OF THUNDERSTORMS IS EXPECTED TO MOVE WITHIN THE WESTERN PORTION OF
MISSISSIPPI IN THE NEXT COUPLE OF HOURS.  PEOPLE IN WEST MISSISSIPPI SHOULD
REMAIN ALERT TO CHANGING WEATHER CONDITIONS IN THE NEXT FEW HOURS.

                  
Special weather statement, Nov 19, 6:49 PM CST, 3 hours 35 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013-
ALZ004-008-013-016-200140-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
 635 PM CST TUE NOV 20 1991

 TORNADO WATCH IN EFFECT FOR WEST MISSISSIPPI UNTIL 1100 PM...

A TORNADO WATCH IS IN EFFECT UNTIL 11 PM FOR THE NORTHWESTERNMOST AND RIVER
COUNTIES OF MISSISSIPPI

AT 627 PM JACKSON WEATHER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALLOCCURRING IN A BROKEN LINE FROM ABOUT 20 MILES NORTH OF PINE BLUFF ARKANSAS...
TO THE VICINITY OF MONROE LOUISIANA...SOUTHWARD TO THE VICINITY OF MORROW
AND BUNKIE IN EAST LOUISIANA.  SOME PRELIMINARY REPORTS OF VERY HEAVY RAINFALL
AND HAIL HAVE BEEN REPORTED DURING THE PAST FEW HOURS FROM THESE THUNDERSTORMS.

THIS LINE OF THUNDERSTORMS IS EXPECTED TO MOVE WITHIN THE WESTERN PORTION OF
MISSISSIPPI IN THE NEXT COUPLE OF HOURS.  PEOPLE IN WEST MISSISSIPPI SHOULD
REMAIN ALERT TO CHANGING WEATHER CONDITIONS IN@ THE NEXT FEW HOURS
Special weather statement, Nov 19, 10:13 PM CST, 11 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Nov 19, 7:37 PM CSTSevere Thunderstorm WarningJANAdams, Jefferson38 min
Nov 19, 8:11 PM CSTSevere Thunderstorm WarningJANIssaquena, Sharkey, Washington49 min
Nov 19, 8:16 PM CSTTornado WarningJANAdams, Jefferson44 min
Nov 19, 8:38 PM CSTSevere Thunderstorm WarningJANClaiborne, Warren52 min
Nov 19, 9:10 PM CSTSevere Thunderstorm WarningJANHinds50 min
Nov 19, 9:59 PM CSTSevere Thunderstorm WarningJANHinds31 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1991Every severe thunderstorm warning in 1991

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.