Alert archive / Louisiana / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 119, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Feb 9, 1999, 2:33 PM CST for Catahoula Parish, Louisiana. It was in force for 47 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
- Feb 9, 1999, 2:33 PM CST (20:33 UTC)
- Expired
- Feb 9, 1999, 3:20 PM CST
- In force
- 47 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Catahoula Parish, LA
The radar
The Ft Polk radar (KPOE), 121 km from the middle of the area, began a volume at 20:36 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, 8.6 hours before the alert went out and 182 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
- 658 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 497 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Feb 9, 9:49 AM CST, 4 hours 44 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 110400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CST WED FEB 10 1999 A FRONTAL BOUNDARY JUST NORTH OF THE STATE WILL SLOWLY BEGIN MOVING NORTHWARD TODAY. INCREASING SOUTHERLY FLOW WILL PROVIDE WARM TEMPERATURES AND ABUNDANT MOISTURE OVER THE REGION. WARM AND MOIST CONDITIONS COMBINED WITH AN UNSTABLE AIRMASS WILL PRODUCE SHOWERS AND THUNDERSTORMS THROUGH EARLY EVENING. WHILE A FEW STRONG THUNDERSTORMS MAY DEVELOP...NO WIDESPREAD SEVERE WEATHER IS EXPECTED. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL NOT BE REQUIRED AT THIS TIME. HOWEVER...EMERGENCY PERSONNEL AND SPOTTERS SHOULD REMAIN ALERT FOR ANY RAPIDLY CHANGING WEATHER CONDITIONS. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Special weather statement, Feb 9, 9:50 AM CST, 4 hours 43 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 100400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 950 AM CST TUE FEB 9 1999 WARM...MOIST AIR WILL CONTINUE TO SPREAD NORTH FROM THE GULF OF MEXICO TODAY AHEAD OF A WEAK FRONTAL BOUNDARY. DURING THE MORNING...SCATTERED SHOWERS WILL DEVELOP ACROSS THE FORECAST AREA WITH ISOLATED STRONG THUNDERSTORMS POSSIBLE. THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL INCREASE DURING THE AFTERNOON. AN UPPER LEVEL DISTURBANCE IS EXPECTED TO MOVE ACROSS THE REGION DURING THE MAXIMUM HEATING OF THE DAY. WITH THIS DIURNAL HEATING...THE AIRMASS WILL BECOME MORE UNSTABLE...PARTICULARLY IN THE VICINITY OF THE SLOW-MOVING FRONTAL BOUNDARY. WHILE A FEW STRONG THUNDERSTORMS MAY DEVELOP...NO WIDESPREAD SEVERE WEATHER IS EXPECTED. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL NOT BE REQUIRED AT THIS TIME. HOWEVER...EMERGENCY PERSONNEL AND SPOTTERS SHOULD REMAIN ALERT FOR ANY RAPIDLY CHANGING WEATHER CONDITIONS. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Local storm report, Feb 9, 1:53 PM CST, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
153 PM CST TUE FEB 09 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....PARISH/COUNTY LOCATION....
0130 PM ST JOSEPH LA FLOODING
02/09/99 TENSAS SOME STREETS AND YARDS
FLOODED PER OEP OFFICE
0140 PM 15 SW HAZLEHURST MS 1.5 INCH HAIL
02/09/99 COPIAH REPORTED BY COPIAH COUNTY
GAME MANAGEMENT STAFFLocal storm report, Feb 9, 2:28 PM CST, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
228 PM CST TUE FEB 09 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....PARISH/COUNTY LOCATION....
0215 PM 10 SW HAZLEHURST MS 1.75 INCH HAIL
02/09/99 COPIAH REPORTED BY CD OFFICE
0231 PM WESSON MS 1.75 INCH HAIL
02/09/99 COPIAH REPORTED THROUGH STATE EOC
BY COUNTY CD OFFICEThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 9, 1:18 PM CST | Tornado Warning | JAN | Claiborne, Jefferson | 32 min |
| Feb 9, 1:32 PM CST | Tornado Warning | JAN | Copiah | 48 min |
| Feb 9, 2:15 PM CST | Tornado Warning | JAN | Lincoln | 50 min |
| Feb 9, 2:23 PM CST | Tornado Warning | JAN | Copiah | 32 min |
| Feb 9, 3:01 PM CST | Severe Thunderstorm Warning | JAN | Covington, Jones | 49 min |
| Feb 9, 3:05 PM CST | Tornado Warning | JAN | Lincoln | 35 min |
| Feb 9, 3:14 PM CST | Tornado Warning | JAN | Jefferson Davis | 46 min |
| Feb 9, 4:03 PM CST | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lawrence | 47 min |
| Feb 9, 8:25 AM CST | Severe Thunderstorm Warning | JAN | Franklin | 35 min |
| Feb 9, 11:09 AM CST | Flash Flood Warning | JAN | Franklin | 111 min |
| Feb 9, 11:56 AM CST | Flash Flood Warning | JAN | Tensas | 2 hr |
| Feb 9, 12:30 PM CST | Severe Thunderstorm Warning | JAN | Tensas | 30 min |
| Feb 9, 4:18 PM CST | Severe Thunderstorm Warning | JAN | Catahoula | 32 min |
| Feb 9, 4:24 PM CST | Severe Thunderstorm Warning | JAN | Concordia, Tensas | 36 min |
| Feb 9, 4:48 PM CST | Severe Thunderstorm Warning | JAN | Catahoula | 37 min |
| Feb 9, 5:14 PM CST | Flash Flood Warning | JAN | Catahoula, Concordia | 61 min |
| Feb 9, 5:24 PM CST | Severe Thunderstorm Warning | JAN | Catahoula | 46 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.