28972576.pdf

|  1. DATE | 2. LOCATION | 12. CONCLUSIONS  |
| --- | --- | --- |
|  31 October 1957 | 44.43N 141.4SE | ☐ Was Balloon ☐ Probably Balloon ☐ Possibly Balloon  |
|  3. DATE-TIME GROUP Local 1830 GMT 31/0930Z | 4. TYPE OF OBSERVATION ☑ Ground-Visual ☐ Ground-Rador ☐ Air-Visual ☐ Air-Intercept Rador | ☐ Was Aircraft ☐ Probably Aircraft ☐ Possibly Aircraft  |
|  5. PHOTOS ☐ Yes ☑ No | 6. SOURCE Civilian | ☐ Was Astronomical ☐ Probably Astronomical ☐ Possibly Astronomical  |
|  7. LENGTH OF OBSERVATION 15 minutes | 8. NUMBER OF OBJECTS one | 9. COURSE stationary ☐ Other ☑ Insufficient Data for Evalua…

Country: Japan/USSR
Subject: Luminous Sightings off the Hokkaido Coast
Source: Maritime Safety Board
Preparing Officer: Anthony M. Pereira, Capt. USAF
Set 1/1, Card 1/3

UnCLASSIFIED
MC #: None
AF #: 1170908
Rpt #: IR-1886-58
Agency: 5004th Air Intel Sv Sq
D.R.: April 2, 1958
D.I.: March 8, 1958
Eval: B-3

Info Spec: DK/nd
Distr: 4E4g/4F3-3 cys/4B1a
Entire Document

Summary:
1. The information contained in this report was obtained from Mr. [redacted] Chief of the Aviation Administration Section and Mr. [redacted] Chief of the No. 2 Security Section, MARITIME SAFETY BOARD, as reported to them b…

Set 1/1, Card 2/3 Japan/ USSR
MC #: None
Rpt #: YR-1886-58

6004th AISS, visited Noboru ITO, Chief of the Aviation Administration Section and , Chief of the No. 2 Security Section, MARITIMA SAFETY BOARD (MSA) for information on an alleged explosion off the SIBERIAN coast on 19 February 1958.

2. Recently, three unknown luminous sightings were made off the coast of HOKKAIDO by fishermen and reported to MSA. MSA has recorded these incidents but will not investigate the matter further. In each instance the sighting was made at night. There is no report indicating an explosion off the coast of SIB…

Set 1/1, Card 3/3 Japan/USSR MC #: None 7
Rpt #: IR-1886-58 5

COMMENTS OF THE PREPARING OFFICER:

5. At approximately 0959 hours (JST) on 19 February 1958 an unknown phenomena, believed to have been an explosion, was detected at 4430N/13730E at a US radar site in JAPAN. The phenomena lasted approximately two hours. This office checked with the Meteorological Agency for barometric or seismic data on the premise that an explosion was detonated. It was learned that there were no barometric or seismic changes indicative of an explosion at the above time. Negative information was also obtained fro…