Hokkaido Japan radar-visual unidentified-object report — February 19, 1958

The radar showed rapidly to moving objects that expanded to cover an area approximately 15 miles and returned similar to weather conditions. The object rose from an altitude of 46,000 feet. LUMINOUS SIGHTINGS IN THE BORE* - SIGHTING COAST On 3 March, 1958 between 2200 and 0200 hrs, three luminous objects were observed and tracked by the HOKKAIDO Coast Safety Board visual and electronic means. Fishermen observed a luminous body that disintegrated in the air at 2036 hours (JST) on 31 October 1957. At 2034 hours (JST) on 1 March 1958, fishermen observed a luminous body that disintegrated in the air at 2036 hours (JST) on 1 March 1958. At 2103 hours (JST) on the same day, a luminous body was observed at HABOMAI (CHISHIMA) (44°45N/145°28E). Text output: COMMENTS ON THE DEPARTING OFFICER: As apparently about 0235 hours (JST) on 19 February 1958 an unknown radar target was detected at a US radar site in JAPAN. The phenomena was connected with the high speed apparent departure of two objects from the premises that an explosion was detected. Changes would be detected at Weather Stations in JAPAN.