Storm Surge/Tide — Harrison, Mississippi

2020-10-28 · Harrison, Mississippi

Event narrative

Storm surge flooded portions of US HWY 90/Beach Boulevard and other low lying areas near the coast. While there are no official gauges on the immediate coast in Harrison county, high water marks suggest peak water levels of at least 10 ft NAVD88, though inundation depths vary by location. The storm surge also resulted in one drowning death in Biloxi.

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 coastal Mississippi with measured sustained winds up to 81 mph and gusts up to 104 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 2 fatalities and 75 injuries. Hurricane Zeta caused approximately $90 million 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 926247. Narrative written by the NWS forecast office that issued the report.