Alert archive / Louisiana / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 252, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Mar 24, 1999, 4:05 PM CST for Catahoula Parish, Franklin Parish, Louisiana. 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
- Mar 24, 1999, 4:05 PM CST (22:05 UTC)
- Expired
- Mar 24, 1999, 4:55 PM CST
- In force
- 50 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Catahoula Parish, LA, Franklin Parish, LA
The radar
The Ft Polk radar (KPOE), 142 km from the middle of the area, began a volume at 22:05 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 10.1 hours before the alert went out and 165 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
- 130 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 642 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 215 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KJAN 242208 RRA SVRJAN LAC025-041-242255- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 405 PM CST WED MAR 24 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTHERN CATAHOULA PARISH IN NORTHEASTERN LOUISIANA EXTREME SOUTHERN FRANKLIN PARISH IN NORTHEASTERN LOUISIANA * UNTIL 455 PM CST * AT 403 PM CST... RADAR INDICATED A SEVERE THUNDERSTORM 17 MILES WEST OF WISNER OR 17 MILES WEST OF SICILY ISLAND... MOVING EAST AT 30 MPH. * SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE... SICILY ISLAND AT 435 PM CST WISNER AT 435 PM CST GILBERT AT 435 PM CST DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS 64
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, Mar 24, 10:15 AM CST, 5 hours 50 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 260400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1015 AM CST WED MAR 24 1999 CLOUDINESS WILL DECREASE OVER NORTHERN PORTION OF THE FORECAST AREA AS DRIER AND MORE STABLE AIR GRADUALLY FILTERS INTO THE REGION DURING THE AFTERNOON. SCATTERED SHOWERS WILL CONTINUE OVER THE SOUTHERNMOST COUNTIES OF MISSISSIPPI IN THE VICINITY OF A SLOW-MOVING COLD FRONT. ISOLATED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AS THE BOUNDARY SLOWLY MOVES SOUTHEAST. IN THE STRONGER STORMS...GUSTY WINDS...HEAVY RAINFALL...AND SMALL HAIL MAY DEVELOP. HOWEVER...WIDESPREAD SEVERE THUNDERSTORMS ARE NOT EXPECTED. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL NOT BE REQUIRED. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Special weather statement, Mar 24, 10:45 AM CST, 5 hours 20 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 250400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1045 AM CST WED MAR 24 1999 A WEAK...NEARLY STATIONARY FRONT WILL BE LOCATED ACROSS THE FORECAST AREA TODAY. THE FRONT WILL DRIFT SLOWLY SOUTHWARD INTO SOUTHERN MISSISSIPPI BY TONIGHT. SOME THUNDERSTORMS WILL OCCUR TODAY AND TONIGHT ALONG AND SOUTH OF THE FRONTAL BOUNDARY. AN ISOLATED STORM COULD PRODUCE LARGE HAIL THIS AFTERNOON...BUT WIDESPREAD SEVERE THUNDERSTORMS ARE NOT EXPECTED. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL NOT BE REQUIRED. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Special weather statement, Mar 24, 10:45 AM CST, 5 hours 20 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 250400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1045 AM CST WED MAR 24 1999 A WEAK...NEARLY STATIONARY FRONT WILL BE LOCATED ACROSS THE FORECAST AREA TODAY. THE FRONT WILL DRIFT SLOWLY SOUTHWARD INTO SOUTHERN MISSISSIPPI BY TONIGHT. SOME THUNDERSTORMS WILL OCCUR TODAY AND TONIGHT ALONG AND SOUTH OF THE FRONTAL BOUNDARY. AN ISOLATED STORM COULD PRODUCE LARGE HAIL THIS AFTERNOON...BUT WIDESPREAD SEVERE THUNDERSTORMS ARE NOT EXPECTED. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL NOT BE REQUIRED. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 4:54 PM CST | Severe Thunderstorm Warning | JAN | Catahoula, Concordia | 51 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1999Every severe thunderstorm warning in 1999
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; radar from the NEXRAD Level II archive.