Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 180, NWS Jackson, MS

April 22, 1997Claiborne County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 22, 1997, 2:40 PM CDT for Claiborne County, Mississippi. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 22, 1997, 2:40 PM CDT (19:40 UTC)
Expired: Apr 22, 1997, 3:30 PM CDT
In force: 50 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Claiborne County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 22, 8:45 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 7.7 hours before the alert went out and 87 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1284 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 525 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 259 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 221942 RRA
SVRJAN
MSC021-222030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
240 PM CDT TUE APR 22 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL MISSISSIPPI
 
   ...CENTRAL AND EASTERN CLAIBORNE COUNTY
 
AT 240 PM WEATHER SERVICE RADAR INDICATED A CLUSTER OF SEVERE
THUNDERSTORMS OVER CENTRAL AND SOUTHERN CLAIBORNE COUNTY MOVING
EAST AT 30 MPH.  THE STORMS WILL AFFECT HERMANVILLE AND PATTISON
BY 250 PM.  HAIL TO THE SIZE OF NICKELS AND WINDS UP TO 60 MPH
MAY BE PRODUCED BY THESE STORMS.
 
IF YOU ARE OUTSIDE...SEEK SH8ELTER IN A STRONG BUILDING AWAY FROM
WINDOWS.  DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
<
 
 
75

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 22, 10:00 AM CDT, 4 hours 40 minutes before

MSZ001>082-230400-

MISSISSIPPI THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1000 AM CDT TUE APR 22 1997

...MAIN SEVERE WEATHER THREAT CENTRAL AND SOUTH MISSISSIPPI TODAY...

A COLD FRONT EXTENDED FROM NORTHEAST LOUISIANA TO NORTHEAST
MISSISSIPPI THIS MORNING. A DEVELOPING LOW PRESSURE SYSTEM OVER TEXAS
IS EXPECTED TO TRACK ALONG THE FRONT AND INTENSIFY AS IT MOVES ACROSS
MISSISSIPPI.

THE AIR MASS ACROSS THE REGION IS VERY UNSTABLE TODAY AND PERSISTENT
SOUTHERLY FLOW SOUTH OF THE FRONT WILL MAINTAIN WARM GULF MOISTURE OVER
CENTRAL AND SOUTH MISSISSIPPI. THIS WILL RESULT IN THE DEVELOPMENT OF
STRONG THUNDERSTORMS OVER THE STATE...PARTICULARLY OVER CENTRAL
MISSISSIPPI COUNTIES. THUNDERSTORM OUTFLOWS THAT MOVE SOUTHWARD FROM
AFTERNOON STORMS MAY ALSO FOCUS THUNDERSTORM DEVELOPMENT IN SOUTH
MISSISSIPPI TODAY.
THE MAIN SEVERE WEATHER THREAT WILL BE VERY LARGE HAIL AND
DAMAGING WINDS. THE CURRENT WIND FIELDS AND WIND SHEAR ARE NOT
VERY STRONG BUT ISOLATED TORNADOES ARE POSSIBLE.

SEVERE THUNDERSTORMS ARE POSSIBLE TONIGHT...PARTICULARLY FOR SOUTH
MISSISSIPPI. THE SEVERE WEATHER THREAT WILL DIMINISH LATE TONIGHT
AS THE LOW PRESSURE SYSTEM MOVES INTO ALABAMA.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT PERSONNEL WILL LIKELY BE REQUIRED TODAY AND TONIGHT.

Special weather statement, Apr 22, 10:03 AM CDT, 4 hours 37 minutes before

MSZ001>082-230400-

MISSISSIPPI THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1000 AM CDT TUE APR 22 1997

...MAIN SEVERE WEATHER THREAT CENTRAL AND SOUTH MISSISSIPPI TODAY...

A COLD FRONT EXTENDED FROM NORTHEAST LOUISIANA TO NORTHEAST
MISSISSIPPI THIS MORNING. A DEVELOPING LOW PRESSURE SYSTEM OVER TEXAS
IS EXPECTED TO TRACK ALONG THE FRONT AND INTENSIFY AS IT MOVES ACROSS
MISSISSIPPI.

THE AIR MASS ACROSS THE REGION IS VERY UNSTABLE TODAY AND PERSISTENT
SOUTHERLY FLOW SOUTH OF THE FRONT WILL MAINTAIN WARM GULF MOISTURE OVER
CENTRAL AND SOUTH MISSISSIPPI. THIS WILL RESULT IN THE DEVELOPMENT OF
STRONG THUNDERSTORMS OVER THE STATE...PARTICULARLY OVER CENTRAL
MISSISSIPPI COUNTIES. THUNDERSTORM OUTFLOWS THAT MOVE SOUTHWARD FROM
AFTERNOON STORMS MAY ALSO FOCUS THUNDERSTORM DEVELOPMENT IN SOUTH
MISSISSIPPI TODAY.

THE MAIN SEVERE WEATHER THREAT WILL BE VERY LARGE HAIL AND
DAMAGING WINDS. THE CURRENT WIND FIELDS AND WIND SHEAR ARE NOT
VERY STRONG BUT ISOLATED TORNADOES ARE POSSIBLE.

SEVERE THUNDERSTORMS ARE POSSIBLE TONIGHT...PARTICULARLY FOR SOUTH
MISSISSIPPI. THE SEVERE WEATHER THREAT WILL DIMINISH LATE TONIGHT
AS THE LOW PRESSURE SYSTEM MOVES INTO ALABAMA.

ACTIVJATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT PERSONNEL WILL LILEY BE REQUIRED TODAY AND TONIGHT.

Special weather statement, Apr 22, 10:04 AM CDT, 4 hours 36 minutes before

MSZ001>082-230400-

MISSISSIPPI THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1000 AM CDT TUE APR 22 1997

...MAIN SEVERE WEATHER THREAT CENTRAL AND SOUTH MISSISSIPPI TODAY...

A COLD FRONT EXTENDED FROM NORTHEAST LOUISIANA TO NORTHEAST
MISSISSIPPI THIS MORNING. A DEVELOPING LOW PRESSURE SYSTEM OVER TEXAS
IS EXPECTED TO TRACK ALONG THE FRONT AND INTENSIFY AS IT MOVES ACROSS
MISSISSIPPI.

THE AIR MASS ACROSS THE REGION IS VERY UNSTABLE TODAY AND PERSISTENT
SOUTHERLY FLOW SOUTH OF THE FRONT WILL MAINTAIN WARM GULF MOISTURE OVER
CENTRAL AND SOUTH MISSISSIPPI. THIS WILL RESULT IN THE DEVELOPMENT OF
STRONG THUNDERSTORMS OVER THE STATE...PARTICULARLY OVER CENTRAL
MISSISSIPPI COUNTIES. THUNDERSTORM OUTFLOWS THAT MOVE SOUTHWARD FROM
AFTERNOON STORMS MAY ALSO FOCUS THUNDERSTORM DEVELOPMENT IN SOUTH
MISSISSIPPI TODAY.
THE MAIN SEVERE WEATHER THREAT WILL BE VERY LARGE HAIL AND
DAMAGING WINDS. THE CURRENT WIND FIELDS AND WIND SHEAR ARE NOT
VERY STRONG BUT ISOLATED TORNADOES ARE POSSIBLE.

SEVERE THUNDERSTORMS ARE POSSIBLE TONIGHT...PARTICULARLY FOR SOUTH
MISSISSIPPI. THE SEVERE WEATHER THREAT WILL DIMINISH LATE TONIGHT
AS THE LOW PRESSURE SYSTEM MOVES INTO ALABAMA.

ACTRIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT PERSONNEL WILL LIKELY BE REQUIRED TODAY AND TONIGHT.

Local storm report, Apr 22, 1:28 PM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MISSISSIPPI
1228 PM CST TUE APR 22 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1025 AM    4 N NATCHEZ               MS   WIND DAMAGE
04/22/97   ADAMS                          TREES DOWN

1146 AM    FLOWOOD                   MS   WIND DAMAGE
04/22/97   RANKIN                         JACKSON AIRPORT TERMINAL
                                          BUILDING REPORTED 20 FT.
                                          SECTION OF ROOF DAMAGED
                                          AND 100 POUND CONCRETE
                                          MAPS BLOWN AROUND

1210 PM    6 S KOSCIUSKO             MS   WIND DAMAGE
04/22/97   ATTALA                         TREES DOWN...WINDOW DAMAGE
                                          TO HOUSE...SHINGLES OFF

Local storm report, Apr 22, 1:34 PM CDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MISSISSIPPI
1228 PM CST TUE APR 22 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1025 AM    4 N NATCHEZ               MS   WIND DAMAGE
04/22/97   ADAMS                          TREES DOWN

1146 AM    FLOWOOD                   MS   WIND DAMAGE
04/22/97   RANKIN                         JACKSON AIRPORT TERMINAL
                                          BUILDING REPORTED 20 FT.
                                          SECTION OF ROOF DAMAGED
                                          AND 100 POUND CONCRETE
                                          MAPS BLOWN AROUND

1210 xPM    6 S KOSCIUSKO             MS   WIND DAMAGE
04/22/97   ATTALA                         TREES DOWN...WINDOW DAMAGE
                                          TO HOUSE...SHINGLES OFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 7:04 PM CDT	Severe Thunderstorm Warning	JAN	Webster	41 min
Apr 21, 7:41 PM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	64 min
Apr 22, 10:39 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena	51 min
Apr 22, 10:51 AM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Washington	39 min
Apr 22, 11:10 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne	50 min
Apr 22, 11:12 AM CDT	Severe Thunderstorm Warning	JAN	Yazoo	48 min
Apr 22, 11:32 AM CDT	Tornado Warning	JAN	Holmes, Yazoo	43 min
Apr 22, 12:08 PM CDT	Severe Thunderstorm Warning	JAN	Rankin	52 min
Apr 22, 12:32 PM CDT	Severe Thunderstorm Warning	JAN	Scott	43 min
Apr 22, 12:56 PM CDT	Severe Thunderstorm Warning	JAN	Newton	34 min
Apr 22, 1:35 PM CDT	Severe Thunderstorm Warning	JAN	Smith	40 min
Apr 22, 2:52 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	53 min
Apr 22, 3:57 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	48 min
Apr 22, 4:01 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence	44 min
Apr 22, 4:11 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	49 min
Apr 22, 4:18 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Simpson	27 min
Apr 22, 4:26 PM CDT	Tornado Warning	JAN	Clarke	34 min
Apr 22, 4:33 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	42 min
Apr 22, 4:57 PM CDT	Tornado Warning	JAN	Jones	48 min
Apr 22, 5:04 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence	41 min
Apr 22, 5:24 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Marion	66 min
Apr 22, 5:45 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	60 min
Apr 22, 5:54 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	36 min
Apr 22, 6:27 PM CDT	Severe Thunderstorm Warning	JAN	Marion	33 min
Apr 22, 6:44 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	46 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1997 Every severe thunderstorm warning in 1997

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.