Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 490, NWS Jackson, MS

October 25, 1997Clarke County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 25, 1997, 3:30 PM CDT for Clarke County, Mississippi. It was in force for 45 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: Oct 25, 1997, 3:30 PM CDT (20:30 UTC)
Expired: Oct 25, 1997, 4:15 PM CDT
In force: 45 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Clarke County, MS

What was reported inside it

Time	Report	Where	Remark
Oct 25, 3:45 PM CDT	Hail 0.75	Shubuta, 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.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.5 hours before the alert went out and 135 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: 2580 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 503 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 8.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 252031 RRA
SVRJAN
MSC023-252115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
330 PM CDT SAT OCT 25 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...CLARKE COUNTY
 
AT 329 PM RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF
SHUBUTA MOVING NORTHEAST 25 MPH. THE STORM WILL REMAIN IN RURAL AREAS
THROUGH THE WARNING PERIOD.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH...PREPARE FOR
WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...AND DEADLY LIGHTNING.
PEOPLE OUTSIDE SHOULD SEEK SHELTER INSIDE A STRONG BUILDING.
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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, Oct 25, 10:25 AM CDT, 5 hours 5 minutes before

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072>
074-260400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1025 AM CDT SAT OCT 25 1997

...SEVERE THUNDERSTORMS WILL THREATEN THE AREA AGAIN THIS AFTERNOON AND
TONIGHT...

A SURFACE LOW PRESSURE CENTER WHICH WILL MOVE FROM NORTHEAST TEXAS THIS
AFTERNOON TO SOUTHERN INDIANA SUNDAY EVENING WILL TRAIL A COLD FRONT
SOUTHWARD FROM CENTRAL ARKANSAS TO NORTH-CENTRAL LOUISIANA LATE TONIGHT.
THE FRONT WILL MOVE INTO WESTERN MISSISSIPPI EARLY SUNDAY MORNING AND
MOVE EAST OF THE STATE OF MISSISSIPPI LATE SUNDAY. AHEAD OF THE FRONT
SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND
THUNDERSTORMS ARE EXPECTED TO INCREASE TONIGHT AS THE FRONT APPROACHES
THE MISSISSIPPI RIVER.

MOIST AND UNSTABLE CONDITIONS AHEAD OF THE APPROACHING FRONT WILL
MAKE FOR A MODERATE RISK OF SEVERE WEATHER ACROSS MOST ALL OF THE
THIS AFTERNOON AND TONIGHT.

IT WILL PROBABLY BE NECESSARY TO REQUEST THE ASSISTANCE OF HAM RADIO
OPERATORS...STORM SPOTTERS...EMERGENCY MANAGERS AND PUBLIC SAFETY
OFFICIALS IN SEVERE WEATHER DETECTION ACTIVITIES THIS AFTERNOON OR
TONIGHT.

FOR MORE WEATHER INFORMATION PLEAS VISIT OUR INTERNET SITE ON THE WORLD
WIDE WEB AT HTTP://WWW.JANNWS.STATE.MS.US

Special weather statement, Oct 25, 10:38 AM CDT, 4 hours 52 minutes before

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072>
074-260400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1025 AM CDT SAT OCT 25 1997

...SEVERE THUNDERSTORMS WILL THREATEN THE AREA AGAIN THIS AFTERNOON AND
TONIGHT...

A SURFACE LOW PRESSURE CENTER WHICH WILL MOVE FROM NORTHEAST TEXAS THIS
AFTERNOON TO SOUTHERN INDIANA SUNDAY EVENING WILL TRAIL A COLD FRONT
SOUTHWARD FROM CENTRAL ARKANSAS TO NORTH-CENTRAL LOUISIANA LATE TONIGHT.
THE FRONT WILL MOVE INTO WESTERN MISSISSIPPI EARLY SUNDAY MORNING AND
MOVE EAST OF THE STATE OF MISSISSIPPI LATE SUNDAY. AHEAD OF THE FRONT
SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND
THUNDERSTORMS ARE EXPECTED TO INCREASE TONIGHT AS THE FRONT APPROACHES
THE MISSISSIPPI RIVER.

MOIST AND UNSTABLE CONDITIONS AHEAD OF THE APPROACHING FRONT WILL
MAKE FOR A MODERATE RISK OF SEVERE WEATHER ACROSS MOST ALL OF THE
THIS AFTERNOON AND TONIGHT.

IT WILL PROBABLY BE NECESSARY TO REQUEST THE ASSISTANCE OF HAM RADIO
OPERATORS...STORM SPOTTERS...EMERGENCY MANAGERS AND PUBLIC SAFETY
OFFICIALS IN SEVERE WEATHER DETECTION ACTIVITIES THIS AFTERNOON OR
TONIGHT.

FOR MORE WEATHER INFORMATION PLEAS VISIT OUR INTERNET SITE ON THE WORLD
WIDE WEB AT HTTP://WWW.JANNWS.STATE.MS.US

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 6:23 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	37 min
Oct 25, 6:39 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower	36 min
Oct 25, 7:00 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	45 min
Oct 25, 7:56 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne	34 min
Oct 25, 8:10 AM CDT	Tornado Warning	JAN	Grenada	35 min
Oct 25, 11:06 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena	39 min
Oct 25, 1:52 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	53 min
Oct 25, 2:08 PM CDT	Severe Thunderstorm Warning	JAN	Jones	52 min
Oct 25, 2:40 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	35 min
Oct 25, 2:49 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	41 min
Oct 25, 3:18 PM CDT	Tornado Warning	JAN	Forrest	42 min
Oct 25, 5:30 PM CDT	Severe Thunderstorm Warning	JAN	Webster	30 min
Oct 25, 5:43 PM CDT	Tornado Warning	JAN	Webster	32 min
Oct 25, 6:30 PM CDT	Tornado Warning	JAN	Leflore, Sunflower	30 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.