Alert archive / Mississippi / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 1, NWS New Orleans, LA

January 3, 2023Saint Helena Parish, Louisiana; Amite County, Pike County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Jan 3, 2023, 3:58 PM CST for Saint Helena Parish, Louisiana; Amite County, Pike County, Mississippi. It was in force for 47 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
Jan 3, 2023, 3:58 PM CST (21:58 UTC)
Expired
Jan 3, 2023, 4:45 PM CST
In force
47 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Saint Helena Parish, LA, Amite County, MS, Pike County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 3, 9:14 AM CSTTornado WatchSPC8 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.0 hours before the alert went out and 150 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 12:00Z on 2023-01-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 352 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2023-01-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 351 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
352 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
710 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
351 m²/s²
0-3 km storm-relative helicity
423 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.4

Open this sounding in Storm Lab

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 3, 1:41 AM CSTFlood WatchLIXAscension, East Baton Rouge, Jefferson, Livingston, Orleans, Plaquemines and 7 more27 hr
Jan 3, 8:35 AM CSTRiver Flood WarningLIXSaint Tammany11 hr
Jan 3, 10:02 AM CSTSpecial Weather StatementLIXTangipahoa28 min
Jan 3, 10:25 AM CSTSpecial Weather StatementLIXWashington35 min
Jan 3, 10:58 AM CSTSpecial Weather StatementLIXWashington32 min
Jan 3, 5:57 PM CSTMarine Dense Fog AdvisoryLIX12 hr
Jan 3, 8:38 AM CSTRiver Flood WarningLIXPearl River11 hr
Jan 3, 8:38 AM CSTRiver Flood WarningLIXPearl River11 hr
Jan 3, 8:54 AM CSTSpecial Weather StatementLIXAmite36 min
Jan 3, 9:28 AM CSTSpecial Weather StatementLIXAmite32 min
Jan 3, 9:42 AM CSTSpecial Weather StatementLIXWalthall33 min
Jan 3, 9:56 AM CSTSpecial Weather StatementLIXWalthall34 min
Jan 3, 11:34 AM CSTSpecial Weather StatementLIXPearl River26 min
Jan 3, 3:41 PM CSTSpecial Weather StatementLIXWalthall19 min
Jan 3, 3:43 PM CSTSpecial Weather StatementLIXAmite32 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2023Severe Thunderstorm Warnings in Louisiana, 2023Every severe thunderstorm warning in 2023

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.