Hurricane and Tornadoes in Louisiana, August 28 to 31, 2021

Storm surge flooding also affected areas outside the hurricane and storm damage risk reduction system levees. Several feet of water covered portions of US Hwy 90, with estimated peak inundation of 5-7 ft. Water was also a few feet deep throughout Venetian isles, flooding several garages and under-home storage areas, and threatening some homes.

Storm surge flooding overtopped the White Ditch levee causing significant flooding along Hwy 39 from White Ditch to Braithwaite. The surge also overtopped the back levees along the west bank, flooding areas along Hwy 23 from West Point A La Hache through Myrtle Grove, Ironton and Alliance. Many homes in the area are elevated, but unelevated homes were pushed off of their foundations and others were flooded with several feet of water. Numerous cattle and horses were killed when they were trapped by the flood waters.

Storm surge flooding overtopped the White Ditch levee causing significant flooding along Hwy 39 from White Ditch to Braithwaite. The surge also overtopped the back levees along the west bank, flooding areas along Hwy 23 from West Point A La Hache through Myrtle Grove, Ironton and Alliance. Many homes in the area are elevated, but unelevated homes were pushed off of their foundations and others were flooded with several feet of water. Numerous cattle and horses were killed when they were trapped by the flood waters.

Storm surge topped the seawall in Mandeville, flooding several blocks of the lakefront neighborhood. Nearly 2 feet of water covered much of Madisonville, and at least one home took in water. Estimated peak inundation was 5-7 feet.

Storm surge flooding pushed water into some homes and cut off low lying portions of Slidell - including the Palm Lake. Estimated peak inundation was 5-7 feet.

Storm surge from Lake Pontchartrain flooded mainly marshy areas south of Hyw 22 in the far southern end of the parish. Estimated peak inundation was 5-7 feet.

Some minor storm surge flooding occurred in low lying coastal areas as the storm approached. Estimated peak inundation was 1-3 feet. However, as the storm neared landfall, the northerly winds of the western eyewall resulted in significant water blow out with water levels dropping up to 6 feet.

Storm surge overtopped the levees surrounding Lafitte and Jean Lafitte, flooding the area with water reaching 5 to 6 feet in some unelevated homes, and stranding over 200 residents who had chosen to ride out the storm at home. One woman drowned in the flood waters in Lafitte. The area was also cut off after barges broke loose and one barge crashed into the Kerner Swing Bridge. Catastrophic flooding also affected the towns of Crown Point and Barataria. Estimated peak inundation was 10 to 11 ft.

Storm Surge breached the Grand Isle burrito levee in numerous locations, with inundation of 10-11 ft on the west end of the island and 5-6 ft on the east end of the island. Some lower sitting structures were knocked off their pilings.

Storm surge caused significant damage across areas south of the Larose to Golden Meadow levees, and waves overtopping portions of the 12ft flood walls near the Leon Theriot Lock. Storm surge breached a parish levee at Bayou Boeuf just south of Lac des Allemands, flooding the town of Kraemer with several feet of water entering some homes as well as the Bayou Bouef Elementary School.

Storm surge caused significant damage across areas south of the Larose to Golden Meadow levees, and waves overtopping portions of the 12ft flood walls near the Leon Theriot Lock. One the east side of the Golden Meadow levee, inundation is estimated at 12-15ft, with waves and runup reaching the top of the 19 ft levee. Farther south, inundation reached 9-10 ft, with a few lower buildings in Leeville were reduced to nothing more than the pilings on which they originally sat. As storm surge and waves battered coastal areas, several barges and vessels broke loose from Port Fourchon, within the Intracoastal waterway and throughout Bayou Lafourche.

Wind damage was common throughout the upper portions of the parish, with numerous trees downed and many homes suffering minor to moderate roof damage. A few were shifted off their foundations in the lower portion of the parish. Power lines and poles were damaged parish-wide, and nearly the entire parish was left without power following the storm.

Wind damage was common throughout the parish, with numerous trees downed and many homes suffering minor to moderate roof damage. A few were shifted off their foundations in the lower portion of the parish. Power lines and poles were damaged parish-wide, and nearly the entire parish was left without power following the storm.

Heavy rainfall led to moderate to major flooding along the Tangipahoa River with minor flooding along the Natalbany River. The flooding was likely made worse by storm surge flooding in the marshy areas south of Ponchatoula hindering drainage.

The parish suffered widespread tree damage with many trees snapped or uprooted, some falling on homes or power lines. Numerous power poles were also snapped. The strong winds also caused widespread minor to moderate structural damage such as shingle and minor roof damage, awning damage, signs blown over and other minor damage. A few structures suffered major damage or were destroyed. Several public buildings were damaged, including Kenner City Hall. 100% of the parish was left without power due to a catastrophic failure of the electric system serving all of metro New Orleans, including a major transmission tower collapsing at Nine Mile Point. There were four indirect fatalities in the parish: three due to carbon monoxide poisoning and one nursing home death.

Ida’s inner eyewall moved across the far western end of Grand Isle with estimated winds of around 155mph. Every structure on the island suffered damage, and 40-50% of the structures on the island were completely destroyed, especially on the western end of the island.

The parish suffered extreme impacts as the eyewall raked much of the parish from Port Fourchon to Lockport as it moved inland. Nearly all buildings in the parish suffered some level of damage, with widespread catastrophic structural damage occurring across much of the parish. Numerous homes, businesses and public buildings lost significant portions of their roof structures, with some homes totally destroyed. There was substantial damage to at least four major medical facilities in the parish, including at least one emergency room taking on water during the storm. The parish’s emergency operations center also suffered significant roof damage. The entire parish was left without power or water service following the storm.

The parish suffered extreme impacts as the eyewall raked much of the parish from Port Fourchon to Lockport as it moved inland. Nearly all buildings in the parish suffered some level of damage, with widespread catastrophic structural damage occurring across much of the parish. Numerous homes, businesses and public buildings lost significant portions of their roof structures, with some homes totally destroyed. Nearly every building in the fishing community of Leeville suffered catastrophic damage. There was also substantial damage to at least four major medical facilities in the parish, including at least one emergency room taking on water during the storm. The parish’s emergency operations center also suffered significant roof damage. The entire parish was left without power or water service following the storm.

Ida’s winds caused widespread damage to trees, power lines and poles, and some structures as well. Most structural damage was minor to moderate, consisting of shingle damage, carport damage or other fascia damage. A few homes suffered more serious damage from falling trees. 100% of the parish was left without power due to a catastrophic failure of the electric system serving all of metro New Orleans.

Ida’s winds caused widespread damage to trees, power lines and poles, and some structures as well. Most structural damage was minor to moderate, consisting of shingle damage, carport damage or other fascia damage. A few homes suffered more serious damage from falling trees. 100% of the parish was left without power due to a catastrophic failure of the electric system serving all of metro New Orleans.

The parish suffered minor to moderate wind damage. Several trees and power lines were downed, with a few poles down as well. Most structural damage was in the form of shingle damage or other fascia damage, though a few properties suffered more significant damage due to falling trees or large tree limbs. At the peak, nearly the entire parish was without power.

The parish suffered widespread tree damage with many trees snapped or uprooted, some falling on homes or power lines. Numerous power poles were also snapped. The strong winds also caused widespread minor to moderate structural damage such as shingle and minor roof damage, awning damage, signs blown over and other minor damage. A few structures suffered major damage or were destroyed. It also resulted in a catastrophic failure of the power system to the parish with all 8 transmission lines failing. This resulted in a 100% power outage not only to the parish but to the entire metro area. There were twelve indirect fatalities in the parish: eight due to excessive heat, two due to excessive heat and a lack of oxygen, and two due to carbon monoxide poisoning.

The parish suffered widespread tree damage with many trees snapped or uprooted, some falling on homes or power lines. Numerous power poles were also snapped. The strong winds also caused widespread minor to moderate structural damage such as shingle and minor roof damage, awning damage, signs blown over and other minor damage. A few structures suffered major damage or were destroyed. It also resulted in a catastrophic failure of the power system to the parish with all 8 transmission lines failing. This resulted in a 100% power outage not only to the parish but to the entire metro area. There were twelve indirect fatalities in the parish: eight due to excessive heat, two due to excessive heat and a lack of oxygen, and two due to carbon monoxide poisoning.

Ida resulted in widespread wind damage across the parish. Numerous trees and powerlines were downed. Most homes in the parish suffered at least minor to moderate roof or other damage, and several were completely destroyed. The parish’s main hospital suffered major damage to its emergency room and operating room, and every one of the parish’s public schools suffered damage ranging from cosmetic to catastrophic - with some suffering significant roof damage or wall collapses. Many roads in the parish, including River Road, were left impassable due to fallen trees, power lines or poles, or other debris. 100% of the parish was left without power due to a catastrophic failure of the electric system serving all of metro New Orleans.

Storm surge moving up Barataria Bay and through Lake Salvador flooded some areas along Bayou Des Allemands near Dufrene Ponds outside of the Sunset Levee System. Storm surge travelling up the Mississippi River caused a barge to crash into the parish’s pump system, interrupting water service throughout the parish. A rise of approximately 6 ft occurred on the Mississippi River near the Bonnet Carre Spillway.

Widespread wind damage occurred across the parish. Numerous trees and powerlines were downed. Most homes in the eastern half of the parish suffered at least minor to moderate roof or other damage, and some older homes and trailers were completely destroyed due to roofs or walls being sheared off. 48 parish buildings, including the parish emergency operations center and both water plants, suffered damage ranging from minor to severe. The majority of roads within the parish were left impassable due to downed trees, power lines and poles, or other debris. One man was killed when Ida’s winds caused his shed to collapse on him. 100% of the parish was left without power and the west bank of the parish was left without water service following the storm.

Ida’s winds downed trees and power lines parish-wide. Most structures in the parish suffered at least minor to moderate roof or other fascia damage, and numerous buildings collapsed or suffered other major damage in the form of roof or wall failure. Nearly every road in the parish was impassable due to downed trees, power lines and poles, or other debris. There was one indirect fatality in the parish due to carbon monoxide poisoning.

The parish suffered significant wind damage, with the greatest impacts across the western half of the parish. Thousands of trees were downed across the parish, with widespread minor to moderate damage to structures as well. Most structural damage was in the form of roof damage or other fascia damage, however, some structures suffered major damage due to falling trees. There were four indirect fatalities in the parish: one due to trauma from falling off a roof while making repairs, one due to lack of oxygen during the power outage, one due to excessive heat, and one due to an alligator attack.

The parish suffered significant wind damage, with the greatest impacts across the western half of the parish. Thousands of trees were downed across the parish, with widespread minor to moderate damage to structures as well. Most structural damage was in the form of roof damage or other fascia damage, however, some structures suffered major damage due to falling trees. Additional wind damage occurred across the east side of the parish, and there were 2 confirmed tornadoes in Slidell.

The parish suffered extreme impacts as the eyewall raked the eastern half of the parish as it moved inland. There was widespread catastrophic damage to structures throughout the parish and both of the parish’s hospitals were severely damaged. An estimated 60% of homes in the parish’s bayou communities were deemed unsafe for habitation, with many losing their roof structures removed, collapsed walls, or trees falling through them. The LUMCON Marine Center in Cocodrie suffered substantial damage, and several public buildings including 2 fire departments also suffered major structural damage. Most power poles were snapped or damaged. Nearly every road in the parish was blocked by downed trees, utility poles, or other debris. During the storm, 2 offshore vessels broke free, crashing into the Bouquet Bridge near Dulac. The entire parish was left without power and most without natural gas or water service following the storm. The strong winds and current caused damage to the parish’s main floodgate on the Houma Navigational Canal which was designed to withstand stronger forces from the south. There was one indirect nursing home death in the parish.

The parish suffered extreme impacts as the eyewall raked the eastern half of the parish as it moved inland. There was widespread catastrophic damage to structures throughout the parish and both of the parish’s hospitals were severely damaged. An estimated 60% of homes in the parish’s bayou communities were deemed unsafe for habitation, with many losing their roof structures removed, collapsed walls, or trees falling through them. The LUMCON Marine Center in Cocodrie suffered substantial damage, and several public buildings including 2 fire departments also suffered major structural damage. Most power poles were snapped or damaged. Nearly every road in the parish was blocked by downed trees, utility poles, or other debris. During the storm, 2 offshore vessels broke free, crashing into the Bouquet Bridge near Dulac. The entire parish was left without power and most without natural gas or water service following the storm. The strong winds and current caused damage to the parish’s main floodgate on the Houma Navigational Canal which was designed to withstand stronger forces from the south.

The parish suffered mainly minor wind impacts in the form of downed trees and powerlines and some minor structural damage to roofs. At the peak, approximately 30% of the parish was without power.

The parish suffered widespread damage to trees, powerlines and homes due to Ida’s strong winds. Numerous homes also suffered minor to moderate damage, mainly to roofs, carports and other fascia. A few homes were more severely damaged by falling trees, including one where a man was killed when a tree fell on his home. Over 100 roads across the parish were closed due to downed trees, power lines and power poles, or other debris. This includes I-10 between Prairieville and Gramercy, which was blocked by downed trees. At the peak nearly the entire parish was without power.

Ida’s winds downed numerous trees, power lines and power poles across the parish, with over 85 roads closed due to downed trees/lines or debris. Several structures suffered minor to moderate wind damage. Nearly 250,000 homes/businesses were without power during the peak. In the aftermath of the storm, two heat-related fatalities occurred.

Ida’s winds were responsible for minor to moderate damage, mainly across the southern portions of the parish. Several trees and power lines were downed, with a few poles down as well. Most structural damage was in the form of shingle damage or other fascia damage. A few properties suffered major damage due to falling trees or large tree limbs. Many of the parish’s sugar cane crops were also damaged by the strong winds. Roughly 60% of electric customers were without power during the peak.

Ida’s winds downed thousands of trees and power poles across the parish and also caused widespread damage to structures. Several structures suffered major damage such as portions of the roof torn off, and a few were completely destroyed by falling trees. Additionally hundreds of roads were impassable due to fallen trees, powerlines, or other debris. At the peak, roughly 85% of electric customers in the parish were without power.

Ida’s winds downed trees and power lines parish-wide as the eastern eyewall traversed far western portions of the parish. Many structures throughout the parish suffered at least minor to moderate roof or other fascia damage, and numerous buildings suffered other major damage from roof failure or falling trees. Most roads in the parish were impassable due to downed trees, power lines and poles, or other debris. There were two indirect fatalities in the parish: one nursing home death and one due to carbon monoxide poisoning.

Ida’s winds downed trees and power lines parish-wide as the eastern eyewall traversed far western portions of the parish. Many structures throughout the parish suffered at least minor to moderate roof or other fascia damage, and numerous buildings suffered other major damage from roof failure or falling trees. Most roads in the parish were impassable due to downed trees, power lines and poles, or other debris. There were two indirect fatalities in the parish: one nursing home death and one due to carbon monoxide poisoning.

Storm surge from Lake Maurepas resulted in flooding across areas generally along and east of Hwy 22, including Maurepas and Killian. Estimated peak surge was 3-4 ft.

As Ida’s storm surge moved into the parish from Lakes Pontchartrain and Maurepas, Frenier Landing and Laplace were flooded. In Laplace, many residents were trapped in their homes or attics by up to 4-6 feet of water. Approximately 800 people were rescued from the Laplace area following the storm. The storm surge flooding also covered I-10. Storm surge inundation period lasted for about 5 days. Estimated peak surge was 8-10 feet.

The parish suffered widespread tree damage with mostly minor to moderate damage to homes and other structures. A few homes suffered major damage due to falling trees. Several roads were blocked by downed trees or other debris. At the peak approximately 60% of the parish was without power.

The parish suffered mainly minor wind impacts with a few trees down and some minor structural damage to roofs. At the peak, approximately 50% of the parish was without power.

Widespread damage to trees and powerlines occurred throughout the parish, with mostly minor to moderate structural damage. Most structural damage was in the form of roof damage, carports damaged, or other fascia damage. However, some homes suffered major damage due to falling trees. At the peak, 100% of the parish was without power.

The parish suffered mainly minor wind impacts with a few trees down and some minor structural damage to roofs. At the peak, approximately 50% of the parish was without power.

The parish suffered mainly minor wind impacts with a few trees down and some minor structural damage to roofs. At the peak, approximately 30% of the parish was without power.

A tornado touched down in Eden Isle just east of I-10. The first sign of visible damage was to a vacant condominium complex on Lake Shore Blvd East. The roof to two of the buildings was partially torn with construction debris and downed trees blown to the west. The tornado tracked to the west-northwest, passing across I-10 and causing downed trees and property damage to numerous homes along Lakeshore Blvd S, Cuttysark Cv, Royal Palms, Moonraker Dr, Pontchartrain Dr, Clara Dr, and Carr Dr. Survey conducted remotely via high-res aerial photography.

Heavy rain across the parish also resulted in minor flooding of both the Amite and Tickfaw Rivers. The campgrounds in Tickfaw State Park were inundated by the floodwaters.

Ida’s storm surge flooded areas outside the hurricane and storm damage risk reduction system levees. Along Hwy 46, the Florissant rock dam was overtopped by storm surge, flooding the communities of Delacroix, Yscloskey, Shell Beach, and Hopedale with up to 6-8 ft of water. Most structures in these areas are elevated, but water flooded numerous garages and other under-home storage areas. During the storm, 22 barges broke loose near Chalmette, one of which collided with the dock at the Valero refinery.

Ida’s storm surge flooded areas outside the hurricane and storm damage risk reduction system levees. Along Hwy 46, the Florissant rock dam was overtopped by storm surge, flooding the communities of Delacroix, Yscloskey, Shell Beach, and Hopedale with up to 6-8 ft of water. Most structures in these areas are elevated, but water flooded numerous garages and other under-home storage areas. During the storm, 22 barges broke loose near Chalmette, one of which collided with the dock at the Valero refinery.

Heavy rain resulted in moderate to major flooding along the Tchefuncte and Bogue Falaya Rivers. Flooding along the Bogue Falaya River inundated portions of Bogue Falaya River Park in Covington and threatened homes along River Bend Road. The Tchefuncte River flooded campgrounds near the river and also threatened or flooded several unelevated homes.

A brief tornado touched down in Eden Isle on Marina Dr where several houses sustained roof and fence damage. Uprooted trees and additional property damage occurred along Constellation Dr, Charles Ct, and Intrepid Dr, and Eden Isles Dr. Survey conducted remotely via high-res aerial photography. The tornado may have continued beyond this point, but aerial imagery was unavailable to confirm this. Estimated peak winds of 75 mph.

Heavy rain fell throughout the parish causing significant street flooding. At least a few homes in Harahan suffered minor water intrusion from the flooding.

Significant street flooding occurred in a few parts of the parish, though no homes were reported to take on water. One man drowned when he drove into a flooded underpass on I-10.

Heavy rain led to significant street flooding on the east bank of the parish, and several homes in the Norco and Montz areas took on water from heavy rainfall.