Alert archive / Mississippi / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 63, NWS New Orleans, LA

April 15, 2023Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 15, 2023, 2:12 PM CDT for Harrison County, Jackson County, Mississippi. It was in force for 63 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: Apr 15, 2023, 2:12 PM CDT (19:12 UTC)
Expired: Apr 15, 2023, 3:15 PM CDT
In force: 63 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 64 km from the middle of the area, began a volume at 19:14 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 15, 11:20 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.2 hours before the alert went out and 84 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 529 J/kg
Mixed-layer CIN: -323 J/kg
Mixed-layer LCL: 915 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

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 New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 15, 12:41 PM CDT, 1 hour 31 minutes earlier.

Area forecast discussion, Apr 15, 12:41 PM CDT, 1 hour 31 minutes before

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In the hours before

Local storm report, Apr 15, 1:49 PM CDT, 23 minutes before

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Local storm report, Apr 15, 1:53 PM CDT, 19 minutes before

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Local storm report, Apr 15, 2:00 PM CDT, 12 minutes before

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Local storm report, Apr 15, 2:06 PM CDT, 6 minutes before

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Local storm report, Apr 15, 2:08 PM CDT, 4 minutes before

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Local storm report, Apr 15, 2:11 PM CDT, 1 minute before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 9:39 AM CDT	Special Marine Warning	LIX		96 min
Apr 15, 10:04 AM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	56 min
Apr 15, 10:27 AM CDT	Special Weather Statement	LIX	East Baton Rouge, East Feliciana, Iberville, West Baton Rouge	48 min
Apr 15, 10:41 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana	64 min
Apr 15, 11:09 AM CDT	Special Marine Warning	LIX		66 min
Apr 15, 11:10 AM CDT	Special Weather Statement	LIX	Lafourche, Terrebonne	50 min
Apr 15, 11:16 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	East Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa	44 min
Apr 15, 11:29 AM CDT	Special Marine Warning	LIX		61 min
Apr 15, 11:40 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston	27 min
Apr 15, 11:43 AM CDT	Special Marine Warning	LIX		70 min
Apr 15, 11:57 AM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Livingston	2 hr
Apr 15, 12:00 PM CDT	Special Weather Statement	LIX	Tangipahoa, Washington	30 min
Apr 15, 12:03 PM CDT	Special Weather Statement	LIX	Ascension, Assumption, Saint James	57 min
Apr 15, 12:15 PM CDT	Special Weather Statement	LIX	Jefferson, Lafourche, Plaquemines	60 min
Apr 15, 12:22 PM CDT	Special Marine Warning	LIX		83 min
Apr 15, 12:31 PM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles, Saint James and 1 more	119 min
Apr 15, 12:37 PM CDT	Special Weather Statement	LIX	Saint Charles, Saint John the Baptist	38 min
Apr 15, 12:45 PM CDT	Special Weather Statement	LIX	Saint Tammany	45 min
Apr 15, 12:51 PM CDT	Special Marine Warning	LIX		54 min
Apr 15, 1:04 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	41 min
Apr 15, 1:07 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	38 min
Apr 15, 1:23 PM CDT	Special Marine Warning	LIX		67 min
Apr 15, 1:38 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Tammany	37 min
Apr 15, 1:45 PM CDT	Special Marine Warning	LIX		60 min
Apr 15, 2:21 PM CDT	Special Marine Warning	LIX		24 min
Apr 15, 2:39 PM CDT	Special Marine Warning	LIX		27 min
Apr 15, 2:40 PM CDT	Small Craft Advisory	LIX		40 hr
Apr 15, 5:36 PM CDT	Special Weather Statement	LIX	Jefferson	39 min
Apr 15, 6:31 PM CDT	Special Weather Statement	LIX	Terrebonne	29 min
Apr 15, 11:01 AM CDT	Special Weather Statement	LIX	Amite, Pike	44 min
Apr 15, 11:36 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Pike, Walthall	39 min
Apr 15, 12:13 PM CDT	Special Weather Statement	LIX	Walthall	32 min
Apr 15, 6:04 PM CDT	River Flood Warning	LIX	Pearl River	108 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2023 Every 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; radar from the NEXRAD Level II archive.