Alert archive / Mississippi / Tornado Warnings in 1999
Tornado Warning 21, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Mar 9, 1999, 12:15 AM CST for Pike County, Mississippi. It was in force for 30 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 9, 1999, 12:15 AM CST (06:15 UTC)
- Expired
- Mar 9, 1999, 12:45 AM CST
- In force
- 30 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Pike County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 9, 12:18 AM CST | Tornado F0 | Mc Comb, MS | The Mississippi Highway Patrol reported a brief tornado touchdown three miles east of McComb along Highway 98. The tornado did not cause any damage. |
| Mar 9, 12:20 AM CST | Tornado F0 | Mc Comb, MS | Pike County Civil Defense reported that a tornado touched down briefly six miles east southeast of McComb near a trailer park. The tornado did not cause any damage. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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 8, 10:30 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 6.3 hours before the alert went out and 123 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
- 230 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 476 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 298 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KNEW 090615 RRA TORNEW MSC113-090645- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 1215 AM CST TUE MAR 9 1999 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A... * TORNADO WARNING FOR - PIKE COUNTY IN SOUTHERN MISSISSIPPI * UNTIL 1245 AM CST * AT 1212 AM CST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING TORNADO 7 MILES EAST OF MCCOMB MOVING EAST AT 45 MPH. LAW ENFORCEMENT OFFICIALS RELAYED PUBLIC REPORTS OF A FUNNEL CLOUD AND DEVELOPING TORNADO IN THE VICINITY OF MCCOMB. * THE TORNADO IS CURRENTLY EXPECTED TO REMAIN OVER RURAL AREAS NEAR THE PRICEDALE AREA. IF YOU ARE IN THESE AREAS...SEEK SHELTER IN A SMALL INTERIOR ROOM AWAY FROM WINDOWS IF YOU ARE IN THE PATH OF A TORNADO...GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS. &
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 12:41 AM CST | Tornado Warning | LIX | Walthall | 49 min |
Nearby
Tornado Warnings in Mississippi, 1999Every tornado warning in 1999Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.