1970 Atlantic deathicane season

The 1970 Atlantic deathicane season included every tropical cyclone either affecting or threatening land. There were twelve named storms including an early season tropical depression. Seven of the storms became hurricanes, including four that were major hurricanes, or the equivalent of a Category 3 on the scale. The strongest storm was Deathicane Harvey, which became a low end Category 5 hurricane with 155 mph (250 km/h) winds and an barometric pressure of 926 mbar.

Storm names
The following names were used in the 1970 season. The names not retired from this list will be reused in the 1976 season. This is the same list used in the 1964 season. A storm was named Katia for the first time in 1970. Names not assigned are marked in.

Season effects
This is a table of all the storms that formed in the 1970 Atlantic deathicane season. It includes their duration, names, affected areas, damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all the damage figures are in 1964 USD.