Alert archive / Louisiana / Tornado Watches in 2026

Tornado Watch 348

June 17, 202623 parishes in Louisiana; 6 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Jun 17, 2026, 10:23 PM CDT for 23 parishes in Louisiana; 6 counties in Mississippi. It was in force for 10 hr.

The area

The outline as issued.

The facts

Issued: Jun 17, 2026, 10:23 PM CDT (03:23 UTC)
Expired: Jun 18, 2026, 8:00 AM CDT
In force: 10 hr
Issued by: the Storm Prediction Center
Largest hail expected: 0.5 in
Strongest gust expected: 50 kt

All 29 counties

Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, George County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Stone County, MS

The radar

The Hammond radar (KHDC), 43 km from the middle of the area, began a volume at 03:26 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 40%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 20%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 5%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 30%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 18, 12:39 AM CDT	Tornado Warning	LIX	Terrebonne	31 min
Jun 18, 1:01 AM CDT	Tornado Warning	LIX	Lafourche	44 min
Jun 18, 1:43 AM CDT	Tornado Warning	LIX	Lafourche, Saint Charles	36 min
Jun 18, 1:48 AM CDT	Severe Thunderstorm Warning	LIX	Terrebonne	57 min
Jun 18, 1:54 AM CDT	Tornado Warning	LIX	Lafourche, Terrebonne	36 min
Jun 18, 1:58 AM CDT	Tornado Warning	LIX	Terrebonne	47 min
Jun 18, 2:05 AM CDT	Tornado Warning Tornado observed	LIX	Saint Charles	25 min
Jun 18, 2:17 AM CDT	Tornado Warning	LCH	Saint Martin, St. Mary	15 min
Jun 18, 2:22 AM CDT	Tornado Warning	LIX	Terrebonne	53 min
Jun 18, 2:31 AM CDT	Flash Flood Warning	LIX	Assumption, Lafourche, Terrebonne	4 hr
Jun 18, 3:04 AM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Terrebonne	41 min
Jun 18, 3:09 AM CDT	Tornado Warning Tornado observed	LIX	Lafourche, Terrebonne	35 min
Jun 18, 3:14 AM CDT	Flash Flood Warning	LIX	Lafourche, Saint Charles, Saint James, Saint John the Baptist	5 hr
Jun 18, 3:22 AM CDT	Tornado Warning	LIX	Jefferson, Saint Charles, Saint John the Baptist	46 min
Jun 18, 3:30 AM CDT	Flash Flood Warning	LIX	Lafourche, Terrebonne	3 hr
Jun 18, 3:34 AM CDT	Tornado Warning	LIX	Lafourche, Saint Charles	41 min
Jun 18, 3:40 AM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Saint Charles, Terrebonne	50 min
Jun 18, 3:41 AM CDT	Tornado Warning	LIX	Lafourche, Terrebonne	49 min
Jun 18, 4:06 AM CDT	Tornado Warning	LIX	Lafourche	39 min
Jun 18, 4:18 AM CDT	Tornado Warning	LIX	Saint Charles	27 min
Jun 18, 4:26 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Orleans, Saint Charles, Terrebonne	64 min
Jun 18, 4:33 AM CDT	Flash Flood Warning	LIX	Jefferson, Orleans, Saint Charles	3 hr
Jun 18, 4:33 AM CDT	Tornado Warning	LIX	Jefferson	18 min
Jun 18, 4:38 AM CDT	Tornado Warning	LIX	Lafourche, Saint Charles	24 min
Jun 18, 4:54 AM CDT	Tornado Warning Tornado observed	LIX	Saint Charles	22 min
Jun 18, 4:56 AM CDT	Tornado Warning	LIX	Saint Tammany	25 min
Jun 18, 5:07 AM CDT	Flash Flood Warning	LIX	Saint Tammany	6 hr
Jun 18, 5:08 AM CDT	Tornado Warning	LIX	Jefferson, Saint Charles	39 min
Jun 18, 5:16 AM CDT	Tornado Warning	LIX	Jefferson	13 min
Jun 18, 5:28 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Orleans, Saint Bernard, Saint Charles, Saint John the Baptist	62 min
Jun 18, 5:32 AM CDT	Tornado Warning	LIX	Jefferson, Orleans	32 min
Jun 18, 6:03 AM CDT	Flash Flood Warning	LIX	Saint Tammany	3 hr
Jun 18, 6:12 AM CDT	Flash Flood Warning Considerable damage threat	LIX	Jefferson, Orleans, Saint Charles	3 hr
Jun 18, 6:41 AM CDT	Tornado Warning	LIX	Saint Tammany	34 min
Jun 18, 6:44 AM CDT	Flash Flood Warning	LIX	Hancock, Harrison, Pearl River	5 hr
Jun 18, 6:51 AM CDT	Tornado Warning	LIX	Saint Tammany	24 min
Jun 18, 7:00 AM CDT	Flash Flood Warning Considerable damage threat	LIX	Saint Tammany	5 hr
Jun 18, 7:02 AM CDT	Tornado Warning Tornado observed	LIX	Saint Tammany	43 min
Jun 18, 7:03 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Orleans, Saint Tammany	42 min
Jun 18, 7:15 AM CDT	Flash Flood Warning	MOB	Stone	3 hr
Jun 18, 7:16 AM CDT	Tornado Warning	LIX	Harrison	14 min
Jun 18, 7:19 AM CDT	Tornado Warning	MOB	Stone	23 min
Jun 18, 7:32 AM CDT	Tornado Warning	LIX	Saint Tammany	11 min
Jun 18, 7:42 AM CDT	Severe Thunderstorm Warning	LIX	Hancock, Harrison	63 min
Jun 18, 7:55 AM CDT	Tornado Warning	MOB	Perry, Stone	50 min
Jun 18, 7:56 AM CDT	Tornado Warning	LIX	Hancock, Harrison	29 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 7:43 PM CDT	Mesoscale Discussion	SPC	Acadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 22 more	3 hr
Jun 18, 2:04 AM CDT	Mesoscale Discussion	SPC	Ascension, Assumption, Jefferson, Lafourche, Livingston, Orleans and 10 more	116 min
Jun 18, 5:12 AM CDT	Mesoscale Discussion	SPC	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 10 more	63 min
Jun 18, 7:55 AM CDT	Tornado Watch	SPC	Saint Tammany, Washington	9 hr
Jun 18, 9:03 AM CDT	Mesoscale Discussion	SPC	Forrest, George, Greene, Hancock, Harrison, Jackson and 6 more	87 min
Jun 18, 12:46 PM CDT	Mesoscale Discussion	SPC	George, Greene, Hancock, Harrison, Jackson, Stone	119 min
Jun 18, 3:48 PM CDT	Mesoscale Discussion	SPC	Jackson	87 min
Jun 18, 5:55 PM CDT	Mesoscale Discussion	SPC	George, Stone	2 hr

Nearby

Tornado Watches in Louisiana, 2026 Tornado Watches in Mississippi, 2026 Every tornado watch in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.