Alert archive / Mississippi / Tornado Warnings in 1999
Tornado Warning 17, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Mar 9, 1999, 12:19 AM CST for Greene County, Mississippi. It was in force for 56 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, 12:19 AM CST (06:19 UTC)
- Expired
- Mar 9, 1999, 1:15 AM CST
- In force
- 56 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Greene County, MS
The radar
The Mobile radar (KMOB), 71 km from the middle of the area, began a volume at 06:20 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 9, 12:30 AM CST | Hail 1.75 | Sand Hill, MS | Golfball size hail was reported on HWY42, west of Sand Hill. |
| Mar 9, 12:40 AM CST | Hail 1.75 | Piave, MS | Golfball size hail was reported in Piave. Windows were broken out of a trailer in the community. |
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 148 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 KMOB 090619 RRA TORMOB MSC041-090715- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MOBILE AL 1219 AM CST TUE MAR 9 1999 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * TORNADO WARNING FOR... GREENE COUNTY IN SOUTHEASTERN MISSISSIPPI * UNTIL 115 AM CST * AT 1216 AM CST... AS INDICATED BY DOPPLER RADAR A TORNADO WAS LOCATED 21 MILES NORTH OF MCLAIN OR 2 MILES NORTHWEST OF PIAVE... MOVING EAST AT 50 MPH. * TORNADO WILL PASS NEAR- PIAVE BY 1218 AM CST IF YOU ARE IN THE PATH OF A TORNADO...SEEK SAFETY IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...OR CUSHIONS TO COVER YOUR BODY. STAY AWAY FROM WINDOWS.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 11:37 PM CST | Severe Thunderstorm Warning | MOB | Perry, Wayne | 53 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; radar from the NEXRAD Level II archive.