F4 tornado — Hamilton County, Ohio

F4 tornado in Hamilton County, Ohio

Tornado April 9, 1999 · Hamilton County, Ohio

Rating

10.0 mi

Whole path

440 yd

Path width

Deaths

Injuries

$85.0M

Damage as recorded

NOAA records this tornado county by county. Its path ran through Hamilton County → Warren County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 440 yards (0.25 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What F4 means. This tornado was rated on Fujita’s original scale, used until 2007. F4 meant devastating damage: well-built houses levelled; the scale paired it with winds of 207–260 mph, figures later judged too high, especially toward the top of the scale, and revised downward in the Enhanced Fujita scale. Ratings then, as now, came from the damage.

What the National Weather Service wrote

A tornado began with F2 intensity in Blue Ash in the northeast corner of the county. This tornado moved through Montgomery, Symmes Township, and Loveland before entering Warren county. The intensity of the tornado was F2 and F3 at many points along the track, intensifying to a low end F4 while in Montgomery. The width of the tornado ranged from 100 yards to 1/4 mile wide. Four fatalities occurred; two in a home and the other two in vehicles. About 91 homes and apartments were destroyed along with 37 businesses. Additionally, 197 homes and apartments suffered major damage with 477 others also incurring damage. Twenty six businesses had major damage with 18 others also incurring damage.

Other tornadoes from the same storm system

Source: NOAA Storm Events Database, event 5691323. Narratives are written by the National Weather Service forecast office that issued the report.

F4 tornado in Hamilton County, Ohio

What the National Weather Service wrote

Other tornadoes from the same storm system

Tornadoes near your address