Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 484, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Oct 25, 1997, 7:56 AM CDT for Claiborne County, Mississippi. It was in force for 34 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
- Oct 25, 1997, 7:56 AM CDT (12:56 UTC)
- Expired
- Oct 25, 1997, 8:30 AM CDT
- In force
- 34 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Claiborne County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 0.9 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
678 WUUS1 KJAN 251257 RRA SVRJAN MSC021-251330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 756 AM CDT SAT OCT 25 1997 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL MISSISSIPPI ...CLAIBORNE COUNTY AT 755 AM A SEVERE THUNDERSTORM WAS LOCATED NEAR PORT GIBSON MOVING NORTHEAST AT 30 MPH. THIS STORM WILL MOVE ALONG THE NATCHEZ TRACE WITH HAIL UP TO 1 INCH IN DIAMETER POSSIBLE. SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. < 76
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, 4:40 AM CDT, 3 hours 16 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072> 074-251600- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 440 AM CDT SAT OCT 25 1997 ...SEVERE THUNDERSTORMS TO THREATEN THE AREA AGAIN TONIGHT... ANOTHER STRONG UPPER LEVEL DISTURBANCE MOVING ACROSS THE SOUTHERN PLAINS WILL COMBINE WITH INCREASING MOISTURE TO PRODUCE SCATTERED DAYTIME THUNDERSTORMS THAT BECOME WIDESPREAD TONIGHT. WARM AFTERNOON TEMPERATURES WILL TEAM UP WITH INCREASING LOW LEVEL WINDS THIS EVENING TO SET THE STAGE FOR SEVERE THUNDERSTORMS OVERNIGHT. AT THIS TIME...IT APPEARS THAT A SQUALL LINE SHOULD EXIST OVER WEST LOUISIANA BY SUNSET AND THEN RAPIDLY MARCH EASTWARD INTO MISSISSIPPI BEFORE MIDNIGHT. DAMAGING THUNDERSTORM WINDS WILL BE THE MAIN THREAT FOR SEVERE WEATHER BEGINNING LATE THIS AFTERNOON...ESPECIALLY ACROSS NORTHEAST LOUISIANA AND EXTREME SOUTHEAST ARKANSAS. MUCH OF WEST MISSISSIPPI WILL BE THREATENED THIS EVENING AND THE EASTERN SECTIONS LATER TONIGHT. THE INCREASING LOW LEVEL WINDS WILL SUPPORT ISOLATED TORNADOES THESE AREAS AND RESIDENTS OF THE MAGNOLIA STATE SHOULD GEAR UP FOR A POTENTIALLY DANGEROUS WEATHER SCENARIO LATER TODAY THROUGH TONIGHT. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL WILL LIKELY BE REQUIRED TONIGHT. FOR MORE WEATHER INFORMATION...PLEASE VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT - HTTP://WWW.JANNWS.STATE.MS.US/ (IN LOWER CASE).
Special weather statement, Oct 25, 4:43 AM CDT, 3 hours 13 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072> 074-251600- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 440 AM CDT SAT OCT 25 1997 ...SEVERE THUNDERSTORMS TO THREATEN THE AREA AGAIN TONIGHT... ANOTHER STRONG UPPER LEVEL DISTURBANCE MOVING ACROSS THE SOUTHERN PLAINS WILL COMBINE WITH INCREASING MOISTURE TO PRODUCE SCATTERED DAYTIME THUNDERSTORMS THAT BECOME WIDESPREAD TONIGHT. WARM AFTERNOON TEMPERATURES WILL TEAM UP WITH INCREASING LOW LEVEL WINDS THIS EVENING TO SET THE STAGE FOR SEVERE THUNDERSTORMS OVERNIGHT. AT THIS TIME...IT APPEARS THAT A SQUALL LINE SHOULD EXIST OVER WEST LOUISIANA BY SUNSET AND THEN RAPIDLY MARCH EASTWARD INTO MISSISSIPPI BEFORE MIDNIGHT. DAMAGING THUNDERSTORM WINDS WILL BE THE MAIN THREAT FOR SEVERE WEATHER BEGINNING LATE THIS AFTERNOON...ESPECIALLY ACROSS NORTHEAST LOUISIANA AND EXTREME SOUTHEAST ARKANSAS. MUCH OF WEST MISSISSIPPI WILL BE THREATENED THIS EVENING AND THE EASTERN SECTIONS LATER TONIGHT. THE INCREASING LOW LEVEL WINDS WILL SUPPORT ISOLATED TORNADOES THESE AREAS AND RESIDENTS OF THE MAGNOLIA STATE SHOULD GEAR UP FOR A POTENTIALLY DANGEROUS WEATHER SCENARIO LATER TODAY THROUGH TONIGHT. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL WILL LIKELY BE REQUIRED TONIGHT. FOR MORE WEATHER INFORMATION...PLEASE VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT - HTTP://WWW.JANNWS.STATE.MS.US/ (IN LOWER CA0SE).
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, 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, 3:30 PM CDT | Severe Thunderstorm Warning | JAN | Clarke | 45 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, 1997Every 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.