Kunashiri Island Japan unidentified aerial event — March 1, 1958

On or during March 1, 1958, at or near Kunashiri Island Japan, Japan, the source reports the following sequence: EVALUATION: Not reported 7. COURSE: Not reported 10. BRIEF SUMMARY OF SIGHTING: A disappearance body that disappeared at an altitude of 2,000 m. Luminous body observed as a pale color gradually increasing in size but not red or green. 2 Security Section, MARITIME SAFETY BOARD, as reported to them by Japanese fishermen off the HOKKAIDO COAST. Recently, three unknown luminous sightings were made off the coast of HOKKAIDO by fishermen and reported to MSA. At 1330 hours (JST) on 31 October 1957 fishermen observed a pillar of flame 100 m high, 1500 m west of EMPETSU (4443N/14418E) for approximately 15 minutes. The color changed from red to blue then disappeared. At 2034 hours (JST) on 1 March 1958 fishermen observed a luminous body disappeared after 10 minutes at an altitude of approximately 2,000 m in the direction of NOTSUTETO POINT (4444N/14525E) on KUNASHIRI ISLAND. At 2103 hours (JST) on the same day, a luminous body was observed rising gradually for about 20 minutes then disappearing near KAPADYAYA (ONERUSU) (4345N/14526E). Officials of the Intelligence Agency stated that any barometric change would be detected at weather stations in JAPAN. (A similar indication of a nuclear explosion was believed for seismic detection of USSR nuclear explosion.) May 20, 1958