Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 99, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Mar 7, 1998, 6:37 AM CST for Franklin Parish, Madison Parish, Louisiana. It was in force for 53 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 7, 1998, 6:37 AM CST (12:37 UTC)
- Expired
- Mar 7, 1998, 7:30 AM CST
- In force
- 53 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Franklin Parish, LA, Madison 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 |
|---|---|---|---|
| Mar 7, 6:00 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 0.6 hours before the alert went out and 130 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
- 2 J/kg
- Mixed-layer CIN
- -286 J/kg
- Mixed-layer LCL
- 599 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
268 WUUS1 KJAN 071239 RRA SVRJAN LAC041-065-071330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 637 AM CST SAT MAR 7 1998 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST LOUISIANA ...MADISON PARISH AT 637 AM RADAR INDICATED A SEVERE THUNDERSTORM ENTERING SOUTHWESTERN MADISON PARISH MOVING TO THE NORTHEAST 40 TO 45 MPH. THE STORM WILL MOVE THROUGH THE TALLULAH AREA AROUND 720 AM. 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. < 71
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 12:25 AM CST | Severe Thunderstorm Warning | JAN | Madison | 50 min |
| Mar 7, 12:40 AM CST | Severe Thunderstorm Warning | JAN | Morehouse | 50 min |
| Mar 7, 5:39 AM CST | Severe Thunderstorm Warning | JAN | Catahoula | 51 min |
| Mar 7, 6:59 AM CST | Severe Thunderstorm Warning | JAN | East Carroll | 46 min |
| Mar 7, 7:42 AM CST | Severe Thunderstorm Warning | JAN | Franklin, Richland | 48 min |
| Mar 7, 11:31 AM CST | Severe Thunderstorm Warning | JAN | Catahoula | 44 min |
| Mar 7, 11:57 AM CST | Severe Thunderstorm Warning | JAN | Tensas | 48 min |
| Mar 7, 12:06 PM CST | Severe Thunderstorm Warning | JAN | Concordia | 39 min |
| Mar 7, 4:13 PM CST | Severe Thunderstorm Warning | JAN | Concordia | 47 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1998Every severe thunderstorm warning in 1998
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.