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EF0 tornado in Harrison County, Mississippi

Tornado August 29, 2021 · Harrison County, Mississippi

EF0
Rating
0.5 mi
Path length
75 yd
Path width
$100K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 75 yards (0.04 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

A likely waterspout moved onshore near Hwy 90 and Fort Henry Ave. It caused damage to trees and a detached garage on Fort Henry Ave. The tornado then moved north-northwest, damaging several roofs in a subdivision near Bayview St, and snapping trees and power lines. The tornado continued on its north-northwestward track, downing trees and causing additional damage to houses on Louisiana Ave. It lifted near Livingston Drive. Survey conducted remotely via high-res satellite imagery.

The wider storm

The ninth named storm, fourth hurricane, and second major hurricane of the 2021 Atlantic hurricane season, Ida originated from a tropical wave in the Caribbean Sea on August 23rd. On August 26th, the wave developed into a tropical depression, which organized further and became Tropical Storm Ida later that day, near Grand Cayman. On a northwestward track, Ida intensified into a hurricane on August 27, just before moving over western Cuba. A day later, the hurricane underwent rapid intensification over the Gulf of Mexico as it passed over a warm core eddy and reached major hurricane strength. It was just under 72 hours from tropical depression formation to category 4 strength with 150 mph winds. Ida remained at its peak intensity of 150 mph winds and a minimum central pressure of 929 millibars as it made landfall near Port Fourchon midday on August 29th. It didn't weaken to a tropical storm until it reached near the Louisiana/Mississippi border.

Ida produced over a dozen tornadoes and light to moderate wind damage across southwestern and coastal Mississippi. Around 100,000 residents were without power. Around 100 homes were damaged, 6 destroyed. Storm surge inundation ranged from a few feet in Jackson County to 7 feet in Harrison County. Hurricane Ida caused approximately $10 million worth of damage.

Began near Henderson Pt (30.3081, -89.2822).

Other tornadoes from the same storm system

10 more tornadoes the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 980447. Narratives are written by the National Weather Service forecast office that issued the report.

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