Storm Surge/Tide — Lower Terrebonne, Louisiana

2020-10-28 · Lower Terrebonne, Louisiana

$25.0M

Property damage

Event narrative

Ahead of Hurricane Zeta, officials issued mandatory evacuation orders for areas outside of the parish's levees and floodgates. The storm surge flooded several coastal roads, including LA HWY 56 with water rising under homes as well. The bottom levels of the Lumcon building were also flooded due to storm surge. A usgs gauge at Cocodrie (CCOL1) recorded a peak water level of 5.22 ft NAVD88. The Cutoff (CTFL1) tide gauge measured a peak of 4.62 NAVD88. The Dulac (DCLL1) tide gauge measured a peak of 3.33 NAVD88.

Wider weather episode

A tropical depression formed in the northwestern Caribbean on the afternoon of October 24th. 9 hours later, it became the twenty-seventh named storm and eleventh hurricane of the exceptionally active 2020 Atlantic hurricane season. After meandering virtually in the same place, it finally began moving northwest and slowly strengthening before making its first landfall on the Yucatan Peninsula on October 26th. Zeta exited the Yucantan Peninsula weaker but still a strong tropical storm. The path of the storm began shifting from northwest to northeast, and heading straight towards Louisiana. In terms of intensity, Zeta slowly but steadily strengthened from this point all the way up until landfall. It reached the highest wind speed possible of a Category 2 storm, 110 mph. Zeta produced extensive wind damage across southeast Louisiana with measured sustained winds up to 87 mph and gusts up to 110 mph. Thousands of power poles were downed and thousands of homes experienced minor damage. Storm surge ranged from a few feet to several feet. There were a total of 1 fatality and 1 injury. Hurricane Zeta caused approximately $1 billion worth of damage.

Zeta was the record-tying sixth hurricane to make landfall in the United States and the record fifth named storm to strike Louisiana in 2020.

Source: NOAA Storm Events Database, event_id 925330. Narrative written by the NWS forecast office that issued the report.