Alert archive / Mississippi / Tornado Watches in 1999

Tornado Watch 79

March 8, 19995 counties in Alabama; 11 parishes in Louisiana; 32 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Mar 8, 1999, 10:30 PM CST for 5 counties in Alabama; 11 parishes in Louisiana; 32 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 8, 1999, 10:30 PM CST (04:30 UTC)
Expired
Mar 9, 1999, 4:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 48 counties

Choctaw County, AL, Clarke County, AL, Dallas County, AL, Marengo County, AL, Washington County, AL, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Hinds County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Newton County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS, Wilkinson County, MS

Warnings issued inside it

26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 8, 10:31 PM CSTSevere Thunderstorm WarningJANNeshoba, Newton49 min
Mar 8, 10:35 PM CSTSevere Thunderstorm WarningJANCopiah, Lincoln50 min
Mar 8, 10:41 PM CSTTornado WarningLCHSaint Landry29 min
Mar 8, 10:42 PM CSTSevere Thunderstorm WarningJANKemper, Lauderdale48 min
Mar 8, 10:48 PM CSTSevere Thunderstorm WarningJANJefferson Davis, Lawrence47 min
Mar 8, 10:48 PM CSTSevere Thunderstorm WarningJANCovington47 min
Mar 8, 10:56 PM CSTSevere Thunderstorm WarningLIXPointe Coupee34 min
Mar 8, 11:01 PM CSTSevere Thunderstorm WarningJANJasper49 min
Mar 8, 11:17 PM CSTSevere Thunderstorm WarningLIXWest Feliciana33 min
Mar 8, 11:19 PM CSTSevere Thunderstorm WarningJANJones46 min
Mar 8, 11:19 PM CSTSevere Thunderstorm WarningJANClarke46 min
Mar 8, 11:37 PM CSTSevere Thunderstorm WarningMOBChoctaw53 min
Mar 8, 11:37 PM CSTSevere Thunderstorm WarningMOBPerry, Wayne53 min
Mar 8, 11:39 PM CSTSevere Thunderstorm WarningJANForrest, Lamar46 min
Mar 8, 11:43 PM CSTSevere Thunderstorm WarningBMXMarengo47 min
Mar 8, 11:49 PM CSTTornado WarningJANJones46 min
Mar 9, 12:15 AM CSTTornado WarningLIXPike30 min
Mar 9, 12:19 AM CSTTornado WarningMOBGreene56 min
Mar 9, 12:21 AM CSTSevere Thunderstorm WarningJANForrest34 min
Mar 9, 12:27 AM CSTSevere Thunderstorm WarningMOBWashington63 min
Mar 9, 12:28 AM CSTTornado WarningLIXSaint Helena, Tangipahoa32 min
Mar 9, 12:41 AM CSTTornado WarningLIXWalthall49 min
Mar 9, 12:49 AM CSTSevere Thunderstorm WarningJANMarion31 min
Mar 9, 12:57 AM CSTTornado WarningLIXSaint Helena48 min
Mar 9, 1:06 AM CSTTornado WarningLIXTangipahoa34 min
Mar 9, 1:43 AM CSTSevere Thunderstorm WarningLIXSaint Tammany32 min

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.5 hours before the alert went out and 120 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.

Skew-T log-pSkew-T log-p diagram, Jackson, MS at 00:00Z on 1999-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 00:00Z on 1999-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 381 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
694 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
381 m²/s²
0-3 km storm-relative helicity
674 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 9, 1:00 AM CSTTornado WatchSPCBaldwin, Clarke, Conecuh, Covington, Escambia, Mobile and 2 more5 hr

Nearby

Tornado Watches in Mississippi, 1999Tornado Watches in Louisiana, 1999Tornado Watches in Alabama, 1999Every tornado watch 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; the sounding from the Mesonet's radiosonde archive.