Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 413, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jun 20, 1998, 9:49 PM CDT for Forrest County, Lamar County, Mississippi. It was in force for 36 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
- Jun 20, 1998, 9:49 PM CDT (02:49 UTC)
- Expired
- Jun 20, 1998, 10:25 PM CDT
- In force
- 36 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 02:51 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 |
|---|---|---|---|
| Jun 20, 10:00 PM CDT | Thunderstorm Wind | Glendale, MS | Several trees were blown down. |
| Jun 20, 10:00 PM CDT | Thunderstorm Wind | Sumrall, MS | Several trees were blown down and the tin of a barn roof was peeled off. |
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 nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 2.8 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
- 2787 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1474 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
075 WUUS1 KJAN 210249 RRA SVRJAN MSC035-073-210325- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 949 PM CDT SAT JUN 20 1998 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN FORREST COUNTY IN SOUTHEASTERN MISSISSIPPI NORTHERN LAMAR COUNTY IN SOUTHEASTERN MISSISSIPPI * UNTIL 1025 PM CDT * AT 948 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM 14 MILES NORTHWEST OF HATTIESBURG OR 2 MILES NORTHEAST OF SUMRALL MOVING SOUTH AT 10 MPH. * THE FOLLOWING LOCATION IS IN THE PATH OF THIS STORM... SUMRALL BY 955 PM CDT DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS 76
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 7:24 PM CDT | Severe Thunderstorm Warning | JAN | Jones | 31 min |
| Jun 20, 7:34 PM CDT | Severe Thunderstorm Warning | JAN | Simpson | 36 min |
| Jun 20, 7:59 PM CDT | Severe Thunderstorm Warning | JAN | Jones | 16 min |
| Jun 20, 8:08 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis | 32 min |
| Jun 20, 8:53 PM CDT | Severe Thunderstorm Warning | JAN | Smith | 37 min |
| Jun 20, 8:53 PM CDT | Severe Thunderstorm Warning | JAN | Smith | 32 min |
| Jun 20, 9:09 PM CDT | Severe Thunderstorm Warning | JAN | Covington | 36 min |
| Jun 20, 9:28 PM CDT | Severe Thunderstorm Warning | JAN | Jasper | 32 min |
| Jun 20, 10:01 PM CDT | Severe Thunderstorm Warning | JAN | Rankin | 34 min |
| Jun 20, 10:29 PM CDT | Severe Thunderstorm Warning | JAN | Forrest, Lamar | 31 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.