Alert archive / Louisiana / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 103, NWS New Orleans, LA

May 17, 20244 parishes in Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at May 17, 2024, 1:08 AM CDT for 4 parishes in Louisiana. It was in force for 18 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: May 17, 2024, 1:08 AM CDT (06:08 UTC)
Expired: May 17, 2024, 1:26 AM CDT
In force: 18 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Jefferson Parish, LA, Lafourche Parish, LA, Saint Charles Parish, LA, Saint John the Baptist Parish, LA

The radar

The Hammond radar (KHDC), 80 km from the middle of the area, began a volume at 06:08 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
May 16, 7:59 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.1 hours before the alert went out and 79 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: 61 J/kg
Mixed-layer CIN: -248 J/kg
Mixed-layer LCL: 1098 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 May 17, 12:57 AM CDT, 11 minutes earlier.

Area forecast discussion, May 17, 12:57 AM CDT, 11 minutes before

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In the hours before

Local storm report, May 17, 12:25 AM CDT, 43 minutes before

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Local storm report, May 17, 12:37 AM CDT, 31 minutes before

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Local storm report, May 17, 12:47 AM CDT, 21 minutes before

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Local storm report, May 17, 12:58 AM CDT, 10 minutes before

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Local storm report, May 17, 1:05 AM CDT, 3 minutes before

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Local storm report, May 17, 1:06 AM CDT, 2 minutes 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
May 16, 8:13 PM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	47 min
May 16, 8:23 PM CDT	River Flood Warning	LIX	Tangipahoa	14 hr
May 16, 8:24 PM CDT	River Flood Warning	LIX	Saint Tammany	14 hr
May 16, 8:24 PM CDT	River Flood Warning	LIX	Saint Tammany	14 hr
May 16, 8:56 PM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	49 min
May 16, 9:07 PM CDT	Areal Flood Advisory	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 3 more	50 min
May 16, 9:23 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana	52 min
May 16, 9:57 PM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 3 more	3 hr
May 16, 10:00 PM CDT	Areal Flood Advisory	LIX	Ascension, Assumption, Iberville, Lafourche, Livingston, Saint James	4 hr
May 16, 10:00 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, East Baton Rouge, East Feliciana, Livingston, Saint Helena	45 min
May 16, 10:05 PM CDT	Severe Thunderstorm Warning Destructive damage threat	LIX	Ascension, Assumption, East Baton Rouge, Iberville, West Baton Rouge	40 min
May 16, 10:07 PM CDT	Severe Thunderstorm Warning	LIX	Iberville, Pointe Coupee, West Baton Rouge, West Feliciana	20 min
May 16, 10:33 PM CDT	Areal Flood Advisory	LIX	Livingston, Saint Helena, Saint John the Baptist, Saint Tammany, Tangipahoa, Washington	3 hr
May 16, 10:37 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, Assumption, Iberville, Lafourche, Livingston, Saint James and 1 more	38 min
May 16, 10:39 PM CDT	Severe Thunderstorm Warning	LIX	Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington	51 min
May 16, 10:43 PM CDT	Special Marine Warning	LIX		2 hr
May 16, 10:50 PM CDT	Tornado Warning	LIX	Ascension, Saint James	25 min
May 16, 10:54 PM CDT	Tornado Warning Tornado observed	LIX	Saint James, Saint John the Baptist	21 min
May 16, 10:59 PM CDT	Areal Flood Advisory	LIX	Ascension, Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard and 3 more	21 min
May 16, 11:05 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 3 more	55 min
May 16, 11:09 PM CDT	Flash Flood Warning	LIX	Livingston, Saint Helena, Saint John the Baptist, Saint Tammany, Tangipahoa, Washington	2 hr
May 16, 11:11 PM CDT	Special Weather Statement	LIX	Washington	64 min
May 16, 11:16 PM CDT	Areal Flood Advisory	LIX	Saint Tammany, Washington	2 hr
May 16, 11:16 PM CDT	Tornado Warning	LIX	Saint Charles, Saint John the Baptist	14 min
May 16, 11:20 PM CDT	Flash Flood Warning	LIX	Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 2 more	3 hr
May 16, 11:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Saint Tammany, Tangipahoa	66 min
May 16, 11:32 PM CDT	Special Weather Statement	LIX	Jefferson, Lafourche, Terrebonne	73 min
May 16, 11:51 PM CDT	Special Marine Warning	LIX		84 min
May 16, 11:57 PM CDT	Flash Flood Warning	LIX	Saint Tammany, Washington	2 hr
May 16, 11:59 PM CDT	Severe Thunderstorm Warning Destructive damage threat	LIX	Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard	61 min
May 17, 12:05 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Orleans, Saint Tammany	55 min
May 17, 12:12 AM CDT	Special Marine Warning	LIX		2 hr
May 17, 12:25 AM CDT	Special Marine Warning	LIX		95 min
May 17, 12:28 AM CDT	Severe Thunderstorm Warning	LIX	Assumption, Lafourche, Saint James, Terrebonne	47 min
May 17, 12:33 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Plaquemines	59 min
May 17, 12:52 AM CDT	Special Marine Warning	LIX		70 min
May 17, 12:59 AM CDT	Special Marine Warning	LIX		91 min
May 17, 1:16 AM CDT	Special Marine Warning	LIX		89 min
May 17, 1:32 AM CDT	Special Weather Statement	LIX	East Baton Rouge	28 min
May 17, 1:39 AM CDT	Special Weather Statement	LIX	Iberville, West Baton Rouge	36 min
May 17, 1:47 AM CDT	Special Weather Statement	LIX	Orleans	28 min
May 17, 2:00 AM CDT	Special Marine Warning	LIX		60 min
May 17, 2:18 AM CDT	Special Marine Warning	LIX		87 min
May 17, 2:20 AM CDT	Special Weather Statement	LIX	East Baton Rouge	25 min
May 17, 2:30 AM CDT	Special Marine Warning	LIX		90 min
May 17, 3:23 AM CDT	Special Weather Statement	LIX	Washington	52 min
May 16, 7:09 PM CDT	Special Weather Statement	LIX	Hancock	36 min
May 16, 8:26 PM CDT	River Flood Warning	LIX	Pike, Walthall	14 hr
May 16, 8:27 PM CDT	River Flood Warning	LIX	Pearl River	14 hr
May 16, 8:29 PM CDT	River Flood Warning	LIX	Harrison	5 days
May 16, 8:30 PM CDT	River Flood Warning	LIX	Harrison	4 days
May 16, 11:34 PM CDT	Special Weather Statement	LIX	Pearl River	41 min
May 17, 12:58 AM CDT	Severe Thunderstorm Warning	LIX	Harrison, Jackson	36 min
May 17, 3:35 AM CDT	Special Weather Statement	LIX	Pearl River	25 min
May 17, 4:31 AM CDT	Special Weather Statement	LIX	Pearl River	29 min
May 17, 5:38 AM CDT	Special Weather Statement	LIX	Harrison	37 min
May 17, 6:10 AM CDT	Special Weather Statement	LIX	George	35 min
May 17, 3:33 PM CDT	Special Weather Statement	LIX	Jackson	27 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2024 Every severe thunderstorm warning in 2024

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.