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St. Tammany Parish, Louisiana

Tornadoes, hail, floods and severe storms recorded here between 1957 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.

74
Tornado reports
98
Hail reports
162
Floods since 1996
802
All events
8
Deaths
$5.7B
Property damage

Tornado paths in St. Tammany Parish

The part of each tornado’s path NOAA recorded in this county, 73 in all. Zoom in and the paths widen to their surveyed width.

EF0EF1EF2EF3EF4EF5Unrated

Year by year

19572026
Hover or tap a bar to see that year.
All storm eventsTornadoes

NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.

Most significant events

The strongest tornadoes, deadliest events and biggest damage here, up to 50.

May 26, 2011 · St. Tammany, Louisiana
Tornado EF3 Tornado4 injuries
Damage began at Birtrue Road east of Louisiana Highway 40. The tornado then continued eastward producing EF2 damage to homes on Birtue and Thornhill Roads. EF3 damage was observed near the intersection of Jenkins Cemetery Road and Louisiana Highway 40. Two homes had extensive dam…
April 27, 2016 · St. Tammany, Louisiana
Lightning Lightning1 death
A 36 year old man was struck and killed by lightning at a construction site in Slidell.
August 28, 2012 · St. Tammany, Louisiana
Storm Surge/Tide Storm Surge/Tide1 death, $42.8M damage
June 13, 2007 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind1 death, 1 injury
Numerous trees and power lines along Tyler Street and nearby parallel streets between 19th Avenue and 23rd Avenue were knocked down by thunderstorm winds. Two vehicles and one residence were damaged by the falling trees. In one of the vehicles crushed by falling trees, one of the…
August 28, 2005 · St. Tammany, Louisiana
Hurricane (Typhoon) Hurricane (Typhoon)2 deaths, $2.5B damage
August 14, 1999 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind1 death
December 18, 1995 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind1 death
Sheriff's Office reported a driver was killed when a tree fell on the truck he was driving.
July 26, 1987 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind1 death, 3 injuries
August 13, 2011 · St. Tammany, Louisiana
Lightning Lightning15 injuries
Lightning struck near a large group of people gathered for a four-wheel vehicle event north of Covington. Firefighters evaluated at least a dozen people who had minor injuries, and three people were taken to the hospital.
November 21, 1997 · St. Tammany, Louisiana
Tornado F2 Tornado43 injuries, $3.5M damage
October 25, 1997 · St. Tammany, Louisiana
Lightning Lightning6 injuries
Six people were injured when lightning struck a pavilion under which they had taken shelter from heavy rain during a halloween benefit show. One was hospitalized overnight and the others were treated and released.
September 11, 2024 · St. Tammany, Louisiana
Flash Flood Flash Flood$3.0M damage
Heavy rain of 5-7' also fell across the parish with locally higher amounts. Much of this rain fell over the course of just a few hours, resulting in significant flash flooding, especially from Covington through Slidell. Numerous roads became impassable and several homes were floo…
October 28, 2020 · St. Tammany, Louisiana
Hurricane (Typhoon) Hurricane (Typhoon)$15.0M damage
Zeta produced tropical storm force winds and likely some hurricane force wind gusts which led to widespread damage to trees, power lines and some power poles across the parish. At the peak, roughly 60 percent of the parish was without power.
April 9, 2020 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind$1.5M damage
Estimated wind gusts between 40 and 50 mph across the city of Slidell. Minor sporadic damage reported via social media and NWS employee. Time estimated from radar.
August 12, 2016 · St. Tammany, Louisiana
Flood Flood$3.2M damage
Six to twelve inches of rainfall, most of which fell in one day, led to major flooding along the Tchefuncte River in St. Tammany Parish. Approximately 100 homes and businesses suffered varying degrees of damage due to the flooding and numerous roads, including Hwy 21 were closed …
March 10, 2016 · St. Tammany, Louisiana
Flash Flood Flash Flood$4.0M damage
Widespread heavy rainfall of 6 to 12 inches across northwest St Tammany Parish during the overnight and morning hours resulted in widespread flash flooding. Numerous roads were flooded during the night in the affected areas. High water rescues were conducted at a number of locati…
August 28, 2012 · St. Tammany, Louisiana
Hurricane (Typhoon) Hurricane (Typhoon)$4.8M damage
September 11, 2008 · St. Tammany, Louisiana
Storm Surge/Tide Storm Surge/Tide$5.0M damage
Storm surge flooding of 4 to 6 feet above normal on Lake Pontchartrain caused flooding of low lying areas including roadways and some structures in the southern part of the parish. Early estimates were that about 200 structures flooded from Slidell to the Madisonville area.
September 23, 2005 · St. Tammany, Louisiana
Storm Surge/Tide Storm Surge/Tide$8.6M damage
August 29, 2005 · St. Tammany, Louisiana
Storm Surge/Tide Storm Surge/Tide$3.0B damage
July 5, 2005 · St. Tammany, Louisiana
Hurricane (Typhoon) Hurricane (Typhoon)$5.0M damage
July 1, 2003 · St. Tammany, Louisiana
Flood Flood$2.0M damage
June 30, 2003 · St. Tammany, Louisiana
Tropical Storm Tropical Storm$2.0M damage
October 2, 2002 · St. Tammany, Louisiana
Hurricane (Typhoon) Hurricane (Typhoon)$5.5M damage
September 25, 2002 · St. Tammany, Louisiana
Tropical Storm Tropical Storm$6.4M damage
June 11, 2001 · St. Tammany, Louisiana
Flash Flood Flash Flood$2.0M damage
Severe flooding developing primarily in the southeast portion of St. Tammany Parish. Numerous streets were impassable. Parish officials estimate that over 1000 houses were flooded, primarily in the Slidell area.
April 2, 1988 · St. Tammany, Louisiana
Tornado F1 Tornado$2.5M damage
June 18, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
Gause Boulevard in Slidell impassable due to flooding.
June 18, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
Water was 1 to 2 feet deep on Airport Road in Slidell.
June 18, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
A picture on social media showed powerlines downed by thunderstorm winds along Highway 434.
June 18, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Tree fell on a car on Hwy 21 and Fairgrounds, in Bush.
June 18, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
Picture of entire yard covered with water 1-2 feet in depth. Car appears to be inundated.
June 18, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
South Perimeter Road and entrance to Veterans Cemetery covered by unknown amount of water.
June 18, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
Picture on social media showed water in cars parked along Brownswitch Road in Slidell.
June 18, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
Significant flooding in Crossgates neighborhood in Slidell. Water encroaching on homes.
June 18, 2026 · St. Tammany, Louisiana
Tornado EF1 Tornado
NWS ground survey confirmed an EF-1 tornado impacted areas near Bayou Cane and moved northeast across US Hwy 190 west of Lacombe, LA in St. Tammany Parish. The tornado touched down near the shore of Lake Pontchartrain or came ashore as a tornadic waterspout with evident damage to…
June 18, 2026 · St. Tammany, Louisiana
Tornado EF0 Tornado
A brief EF0 tornado touched down in Eden Isle, LA and moved east. Widespread branches and tree debris was found in Eden Isle along with a few houses with minor damage. One house had a failure at the garage where the wind looks to have been pushed into the garage. The tornado dama…
June 18, 2026 · St. Tammany, Louisiana
Tornado EF1 Tornado
NWS ground survey confirmed an EF-1 tornado with maximum sustained winds of 105 mph. The tornado began near or before moving into Treasure Isle where it flipped a large boat on its side. Additional visible damage to homes and lofting of outdoor fixtures was noted as the tornado m…
June 6, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
Multiple reports of flash flooding along Gause Boulevard with some vehicles stalled.
June 6, 2026 · St. Tammany, Louisiana
Flash Flood Flash Flood
Gause Boulevard continues to remain under water in some areas.
May 22, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Report of thunderstorm wind damage in the northern part of Folsom. Several downed trees in a park and several snapped trees in an adjacent field.
May 22, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Tree downed by thunderstorm winds across Highway 1077 at Harold Core Road.
May 22, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Trees reported down on several streets in the Folsom and Goodbee area.
May 9, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
A few pine trees snapped near the intersection of Scenic Drive and Airport Rd and in the Oakmont subdivision off Airport Rd.
March 16, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Report of a tree down high winds caused by severe thunderstorms.
March 16, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Small tree down on Marsha Dr.
March 11, 2026 · St. Tammany, Louisiana
Tornado EF0 Tornado
An EF-0 tornado with peak wind of 80 mph and max width of 50 yards rapidly developed within a line of storms near Blond, LA in St. Tammany Parish. This tornado predominantly uprooted and damaged tree branches and rotten trunks as it tracked from Allison Rd east-southeast through …
March 11, 2026 · St. Tammany, Louisiana
Tornado EF0 Tornado
An EF-0 tornado with peak winds 75 mph and max width of 50 yards rapidly developed within a line of storms subsequently after the dissipation of an EF-0 tornado to its southwest. This tornado caused minor tree damage along a defined path from a private residence west of LA Hwy 10…
March 11, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Tree, minor roof and window damage along Holly Street in Mandeville.
March 11, 2026 · St. Tammany, Louisiana
Thunderstorm Wind Thunderstorm Wind
Emergency management reported doors of a general store blown open and stock scattered inside.
Events by year, as a table
YearEventsTornadoes
2026336
2025181
2024756
2023240
2022174
2021435
2020232
201990
2018111
2017245
2016242
2015110
2014150
2013141
2012202
2011334
2010110
2009142
2008283
2007110
2006150
2005120
2004211
2003140
2002263
2001200
2000274
1999100
1998261
1997192
1996231
1995232
199440
199360
199262
199180
1990110
198940
1988113
1987101
198630
1985101
198440
198351
198221
198031
197920
197820
197610
197520
197442
197310
197021
196910
196820
196411
196111
195721