Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 166, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Apr 22, 1997, 10:00 AM CDT for West Carroll Parish, Louisiana. It was in force for 45 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, 10:00 AM CDT (15:00 UTC)
- Expired
- Apr 22, 1997, 10:45 AM CDT
- In force
- 45 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County West Carroll Parish, LA
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, 3.0 hours before the alert went out and 139 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 221501 RRA SVRJAN LAC123-221545- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CDT TUE APR 22 1997 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST LOUISIANA ...WEST CARROLL PARISH AT 1000 AM WEATHER SERVICE RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS OVER EASTERN MOREHOUSE PARISH MOVING EAST AT 35 MPH TOWARD WEST CARROLL PARISH. CONCORD...OAK GROVE...GOODWILL AND DARNELL ARE IN THE PATH OF THESE STORMS. DAMAGING WINDS AND HAIL UP TO THE SIZE OF QUARTERS CAN BE EXPECTED FROM THESE STORMS. A TORNADO WATCH IS@ ALSO IN EFFECT. REMEMBER SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. < 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, 5:05 AM CDT, 4 hours 55 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ001>067-072>076-078-079- 222200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 505 AM CDT TUE APR 22 1997 ...THREAT OF SEVERE WEATHER FOR MISSISSIPPI...NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS TODAY... EARLY THIS MORNING A STATIONARY FRONT EXTENDED ACROSS NORTHERN MISSISSIPPI AND ALONG THE ARKANSAS...LOUISIANA BORDER. LOW PRESSURE WILL DEVELOP AND MOVE ALONG THIS FRONT THIS AFTERNOON. THE COMBINATION OF THE LOW PRESSURE SYSTEM MOVING ALONG THE FRONT...A STRONG UPPER LEVEL WEATHER DISTURBANCE APPROACHING THE AREA FROM THE WEST...AND MOIST AND UNSTABLE AIR ACROSS THE REGION...WILL SET THE STAGE FOR SEVERE THUNDERSTORMS ACROSS THE AREA TODAY AND POSSIBLY INTO TONIGHT. SEVERE THUNDERSTORMS HAVE ALREADY BEEN OCCURRING JUST TO THE WEST OF THE AREA OVERNIGHT...AND A SEVERE THUNDERSTORM WATCH IS NOW IN EFFECT FOR ASHLEY COUNTY AR AND MOREHOUSE PARISH LA UNTIL 11 AM. THUNDERSTORMS WILL BE ON THE INCREASE FROM THE WEST ACROSS THE AREA TODAY...AND WILL CONTINUE INTO AT LEAST THE EARLY PART OF TONIGHT. SOME OF THESE STORMS WILL LIKELY BECOME SEVERE. THE MAIN THREAT FROM THIS SEVERE WEATHER EPISODE LOOKS TO BE LARGE HAIL...WITH SOME THREAT FOR DAMAGING WINDS. IN ADDITION...HEAVY RAINFALL WILL OCCUR WITH THE STORMS...AND VERY HEAVY RAINFALL TOTALS MAY OCCUR IN AREAS WHERE SEVERAL THUNDERSTORMS TRAIN ACROSS THE SAME AREA. SOME LOCALIZED FLOODING IS POSSIBLE. PEOPLE THROUGHOUT MISSISSIPPI...NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS SHOULD KEEP UP TO DATE ON THE WEATHER TODAY AND LISTEN FOR LATER WATCHES OR WARNINGS. HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL MAY BE REQUIRED TO ASSIST IN THE DETECTION OF SEVERE WEATHER TODAY.
Special weather statement, Apr 22, 5:07 AM CDT, 4 hours 53 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ001>067-072>076-078-079- 222200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 505 AM CDT TUE APR 22 1997 ...THREAT OF SEVERE WEATHER FOR MISSISSIPPI...NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS TODAY... EARLY THIS MORNING A STATIONARY FRONT EXTENDED ACROSS NORTHERN MISSISSIPPI AND ALONG THE ARKANSAS...LOUISIANA BORDER. LOW PRESSURE WILL DEVELOP AND MOVE ALONG THIS FRONT THIS AFTERNOON. THE COMBINATION OF THE LOW PRESSURE SYSTEM MOVING ALONG THE FRONT...A STRONG UPPER LEVEL WEATHER DISTURBANCE APPROACHING THE AREA FROM THE WEST...AND MOIST AND UNSTABLE AIR ACROSS THE REGION...WILL SET THE STAGE FOR SEVERE THUNDERSTORMS ACROSS THE AREA TODAY AND POSSIBLY INTO TONIGHT. SEVERE THUNDERSTORMS HAVE ALREADY BEEN OCCURRING JUST TO THE WEST OF THE AREA OVERNIGHT...AND A SEVERE THUNDERSTORM WATCH IS NOW IN EFFECT FOR ASHLEY COUNTY AR AND MOREHOUSE PARISH LA UNTIL 11 AM. THUNDERSTORMS WILL BE ON THE INCREASE FROM THE WEST ACROSS THE AREA TODAY...AND WILL CONTINUE INTO AT LEAST THE EARLY PART OF TONIGHT. SOME OF THESE STORMS WILL LIKELY BECOME SEVERE. THE MAIN THREAT FROM THIS SEVERE WEATHER EPISODE LOOKS TO BE LARGE HAIL...WITH SOME THREAT FOR DAMAGING WINDS. IN ADDITION...HEAVY RAINFALL WILL OCCUR WITH THE STORMS...AND VERY HEAVY RAINFALL TOTALS MAY OCCUR IN AREAS WHERE SEVERAL THUNDERSTORMS TRAIN ACROSS THE SAME AREA. SOME LOCALIZED FLOODING IS POSSIBLE. PEOPLE THROUGHOUT MISSISSIPPI...NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS SHOULD KEEP UP TO DATE ON THE WEATHER TODAY AND LISTEN FOR LATER WATCHES OR WARNINGS. HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL MAY BE REQUIRED TO ASSIST IN THE DETECTION. OF SEVERE WEATHER TODAY.
Special weather statement, Apr 22, 10:00 AM CDT, 0 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.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 9:10 AM CDT | Severe Thunderstorm Warning | JAN | Morehouse | 50 min |
| Apr 22, 9:38 AM CDT | Severe Thunderstorm Warning | JAN | Richland | 52 min |
| Apr 22, 9:55 AM CDT | Severe Thunderstorm Warning | JAN | Morehouse | 35 min |
| Apr 22, 10:02 AM CDT | Severe Thunderstorm Warning | JAN | Franklin | 43 min |
| Apr 22, 10:18 AM CDT | Severe Thunderstorm Warning | JAN | Madison | 42 min |
| Apr 22, 10:20 AM CDT | Severe Thunderstorm Warning | JAN | East Carroll | 40 min |
| Apr 22, 10:22 AM CDT | Severe Thunderstorm Warning | JAN | Catahoula | 53 min |
| Apr 22, 10:36 AM CDT | Severe Thunderstorm Warning | JAN | Tensas | 54 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 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.