area of responsibility. PAGASA assigns names to tropical depressions that form within their area of responsibility and any tropical cyclone that might move into their area of responsibility. Should the list of names for a given year prove to be insufficient, names are taken from an auxiliary list, the first 6 of which are published each year before the season starts. Names not retired from this list will be used again in the 1974 season. This is the same list used for the 1966 season. PAGASA uses its own naming scheme that starts in the Filipino alphabet, with names of Filipino female names ending with "ng" (A, B, K, D, etc.). Names that were not assigned/going to use are marked in . Retirement Due to the severe damage in the Philippines, PAGASA later retired the names Pitang, Sening, Titang, and Yoling. Those were replaced by Pasing, Susang, Tering, and Yaning for the 1974 season. This season had the most retired names by PAGASA at that time. Season effects This table will list all the storms that developed in the northwestern Pacific Ocean west of the International Date Line and north of the equator during 1970. It will include their intensity, duration, name, areas affected, deaths, missing persons (in parentheses), and damage totals. Classification and intensity values will be based on estimations conducted by the JMA, however due to lack of information around this time sustained winds were recorded by the JTWC. All damage figures will be in 1970 USD. Damages and deaths from a storm will include when the storm was a precursor wave or an extratropical low. |- | TD || || bgcolor=#| || bgcolor=#| || bgcolor=#| || None || None || None || |- | TD || || bgcolor=#| || bgcolor=#| || bgcolor=#| || None || None || None || |- | Nancy || || bgcolor=#| || bgcolor=#| || bgcolor=#| || Caroline Islands, Philippines || || None || |- | TD || || bgcolor=#| || bgcolor=#| || bgcolor=#| || Palau, Philippines || None || None || |- | Bising || || bgcolor=#| || bgcolor=#| || bgcolor=#| || Taiwan || None || None || |- | TD || || bgcolor=#| || bgcolor=#| || bgcolor=#| || Philippines || None || None || |- | Olga (Deling) || || bgcolor=#| || bgcolor=#| || bgcolor=#| || Caroline Islands, Ryukyu Islands, Japan, South Korea || || || |- | Pamela (Klaring) || ||