Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 236, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Mar 8, 1999, 11:39 PM CST for Forrest County, Lamar County, Mississippi. It was in force for 46 min. 4 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 8, 1999, 11:39 PM CST (05:39 UTC)
- Expired
- Mar 9, 1999, 12:25 AM CST
- In force
- 46 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Forrest County, MS, Lamar County, MS
The radar
The Mobile radar (KMOB), 123 km from the middle of the area, began a volume at 05:39 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 8, 11:50 PM CST | Thunderstorm Wind | Purvis, MS | Several trees were blown down. |
| Mar 9, 12:00 AM CST | Thunderstorm Wind | Countywide, MS | Numerous trees were blown down througout the county. |
| Mar 9, 12:35 AM CST | Thunderstorm Wind | Hattiesburg, MS | Numerous trees were blown down. |
| Mar 9, 12:35 AM CST | Thunderstorm Wind | Hattiesburg, MS | Trees were blown down along Highway 49. |
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, 5.7 hours before the alert went out and 110 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 7:27 PM CST | Severe Thunderstorm Warning | JAN | Issaquena | 48 min |
| Mar 8, 8:56 PM CST | Severe Thunderstorm Warning | JAN | Claiborne | 49 min |
| Mar 8, 9:27 PM CST | Severe Thunderstorm Warning | JAN | Hinds | 48 min |
| Mar 8, 9:40 PM CST | Severe Thunderstorm Warning | JAN | Copiah, Madison, Rankin | 45 min |
| Mar 8, 9:55 PM CST | Severe Thunderstorm Warning | JAN | Jefferson | 50 min |
| Mar 8, 10:05 PM CST | Tornado Warning | JAN | Adams | 45 min |
| Mar 8, 10:18 PM CST | Severe Thunderstorm Warning | JAN | Leake, Scott, Smith | 47 min |
| Mar 8, 10:18 PM CST | Severe Thunderstorm Warning | JAN | Simpson | 47 min |
| Mar 8, 10:31 PM CST | Severe Thunderstorm Warning | JAN | Neshoba, Newton | 49 min |
| Mar 8, 10:35 PM CST | Severe Thunderstorm Warning | JAN | Copiah, Lincoln | 50 min |
| Mar 8, 10:42 PM CST | Severe Thunderstorm Warning | JAN | Kemper, Lauderdale | 48 min |
| Mar 8, 10:48 PM CST | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lawrence | 47 min |
| Mar 8, 10:48 PM CST | Severe Thunderstorm Warning | JAN | Covington | 47 min |
| Mar 8, 11:01 PM CST | Severe Thunderstorm Warning | JAN | Jasper | 49 min |
| Mar 8, 11:19 PM CST | Severe Thunderstorm Warning | JAN | Jones | 46 min |
| Mar 8, 11:19 PM CST | Severe Thunderstorm Warning | JAN | Clarke | 46 min |
| Mar 8, 11:49 PM CST | Tornado Warning | JAN | Jones | 46 min |
| Mar 9, 12:21 AM CST | Severe Thunderstorm Warning | JAN | Forrest | 34 min |
| Mar 9, 12:49 AM CST | Severe Thunderstorm Warning | JAN | Marion | 31 min |
| Mar 8, 6:12 PM CST | Severe Thunderstorm Warning | JAN | West Carroll | 48 min |
| Mar 8, 6:32 PM CST | Severe Thunderstorm Warning | JAN | Richland | 48 min |
| Mar 8, 6:52 PM CST | Tornado Warning | JAN | East Carroll, Richland | 48 min |
| Mar 8, 8:14 PM CST | Severe Thunderstorm Warning | JAN | Catahoula | 31 min |
| Mar 8, 8:19 PM CST | Severe Thunderstorm Warning | JAN | Tensas | 51 min |
| Mar 8, 9:06 PM CST | Severe Thunderstorm Warning | JAN | Franklin | 49 min |
| Mar 8, 9:55 PM CST | Severe Thunderstorm Warning | JAN | Concordia | 50 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.