Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 117, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Mar 31, 2009, 4:24 PM CDT for Lamar County, Marion County, Mississippi. It was in force for 51 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 31, 2009, 4:24 PM CDT (21:24 UTC)
- Expired
- Mar 31, 2009, 5:15 PM CDT
- In force
- 51 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
Counties Lamar County, MS, Marion County, MS
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 31, 9:37 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 9.4 hours before the alert went out and 108 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
- 377 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 522 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 287 m²/s²
- 0-3 km storm-relative helicity
- 408 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 31, 3:40 PM CDT, 44 minutes earlier.
Area forecast discussion, Mar 31, 3:40 PM CDT, 44 minutes before
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</html>Hazardous weather outlook, Mar 31, 2:52 PM CDT, 1 hour 32 minutes before
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Special weather statement, Mar 31, 11:25 AM CDT, 4 hours 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1125 AM CDT TUE MAR 31 2009 LAZ025-026-MSZ053-054-059>062-311710- TENSAS LA-CONCORDIA LA-JEFFERSON MS-CLAIBORNE MS-FRANKLIN MS- LINCOLN MS-ADAMS MS-COPIAH MS- 1125 AM CDT TUE MAR 31 2009 ...STRONG THUNDERSTORMS NEAR NATCHEZ... A CLUSTER OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS LOCATED NEAR NATCHEZ AT 1124 AM CDT...MOVING EAST AT 30 MPH. PEOPLE IN SOUTHWESTERN COPIAH...NORTHEASTERN ADAMS...NORTHWESTERN LINCOLN...NORTHERN FRANKLIN...SOUTHEASTERN CLAIBORNE AND JEFFERSON COUNTIES...AND EXTREME NORTHEASTERN CONCORDIA AND EXTREME SOUTH CENTRAL TENSAS PARISHES SHOULD MONITOR THIS STORM CLOSELY. AEG
Special weather statement, Mar 31, 11:27 AM CDT, 4 hours 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1127 AM CDT TUE MAR 31 2009 LAZ016-MSZ040-042-043-047>049-053-311710- CLAIBORNE MS-HINDS MS-RANKIN MS-WARREN MS-MADISON MS-ISSAQUENA MS- YAZOO MS-MADISON LA- 1127 AM CDT TUE MAR 31 2009 ...STRONG THUNDERSTORMS NEAR VICKSBURG... AN AREA OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS LOCATED 4 MILES NORTHWEST OF BOVINA AT 1127 AM CDT... MOVING NORTHEAST AT 45 MPH. PEOPLE IN SOUTHERN YAZOO...EXTREME SOUTHEASTERN ISSAQUENA... SOUTHWESTERN MADISON...EASTERN WARREN...EXTREME SOUTHWESTERN RANKIN...HINDS AND EXTREME NORTHEASTERN CLAIBORNE COUNTIES...AND EXTREME EAST CENTRAL MADISON PARISH SHOULD MONITOR THIS STORM CLOSELY. AEG
Local storm report, Mar 31, 11:45 AM CDT, 4 hours 39 minutes before
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</html>Special weather statement, Mar 31, 11:50 AM CDT, 4 hours 34 minutes before
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</html>Special weather statement, Mar 31, 12:22 PM CDT, 4 hours 2 minutes before
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</html>The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 11:32 AM CDT | Severe Thunderstorm Warning | JAN | Adams, Franklin, Jefferson | 43 min |
| Mar 31, 12:12 PM CDT | Severe Thunderstorm Warning | JAN | Copiah, Franklin, Jefferson, Lincoln | 41 min |
| Mar 31, 4:50 PM CDT | Severe Thunderstorm Warning | JAN | Forrest | 40 min |
| Mar 31, 9:17 AM CDT | Severe Thunderstorm Warning | JAN | Franklin, Richland | 43 min |
| Mar 31, 9:56 AM CDT | Severe Thunderstorm Warning | JAN | Catahoula, Concordia, Tensas | 49 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2009Every severe thunderstorm warning in 2009
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.