Additional Report for Celebes Earthquake

1968 Northern Celebes Earthquake

Sangihe Islands, Indonesia

The following reports of possible volcanic activity were received following the Northern Celebes Earthquake and resulting tsunami on 10 August 1968 that killed many people on the Northern Celebes island of Tuguan. The reports, based mostly on news organizations, are vague and were never substantiated. However, later information from the CSLP and Bulletin of Volcanic Eruptions indicated some level of activity at Banua Wuhu volcano and crater avalanches at Awu during this period that may have been the original events that caused these reports.


Index of Monthly Reports

Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

08/1968 (CSLP 30-68) News reports of possible activity at four volcanoes

09/1968 (CSLP 30-68) Scientist who visited the area unable to confirm activity


Contents of Monthly Reports

All information contained in these reports is preliminary and subject to change.

08/1968 (CSLP 30-68) News reports of possible activity at four volcanoes

Card 0018 (26 August 1968) News reports of smoking and rumbling from four volcanoes

The following was reported by Reuters News Service on 24 August 1968. "Antara reported today that four volcanoes in the Sangihe Talud island group off the northern tip of the Celebes had begun rumbling and smoking following the earthquakes."

Card 0021 (28 August 1968) News reports of ships asked to help evacuate residents

The following information was reported by the United Press International on 25 August 1968. "Ships in the Celebes Sea have been asked to help evacuate residents from the volcano-threatened Talaud and Sangi island groups. The Antara News Agency reported increased activity by four volcanoes on the area about 100 miles south of the tip of the Philippine island of Mindanao. About 200,000 people live in the island groups."

Information Contacts:
Card 0018 (26 August 1968) Reuters; Antara News Agency, Indonesia.
Card 0021 (28 August 1968) UPI; Antara News Agency, Indonesia.

09/1968 (CSLP 30-68) Scientist who visited the area unable to confirm activity

Card 0037 (06 September 1968) Scientific team sent to confirm volcanic activity

"Sujatno of Institute of Marine Research reports that scientific team, including Soetadi of Geophysics Section, Office of Meteorology and Geophysics, Djakarta, travelled to Celebes to investigate reported subsidence Taguan Island and volcanic activity Sangihe and Talaud islands. Confirmation of island subsidence and volcanic activity must await return of investigating team."

Card 0040 (09 September 1968) Minor seismicity continues three weeks after main shock

". . . Volcanoes in the Sangihe-Talaud Island Group off the northern tip of the Celebes Islands had begun rumbling and smoking following the earthquakes. Minor earthquake activity is still being recorded in the area three weeks later, and activity of the volcanoes in the Talaud and Sangihe Island Groups are threatening the 200,000 people who live in the islands. Authorities have asked ships in the area to assist in the evacuation of residents."

Card 0043 (10 September 1968) Scientist who visited area uncertain about activity reports

"Uncertain about volcanic activity Sangihe and Talaud islands. Gunung Awu (Mount Awu) on Sangi Island was active and erupted in 1966. Will attempt obtain further information."

Information Contact:
Card 0037 (06 September 1968) American Embassy, Djakarta, Indonesia.
Card 0040 (09 September 1968) International Tsunami Information Center, Honolulu, Hawaii, USA.
Card 0043 (10 September 1968) Soetadi, Office of Meteorology and Geophysics, Djakarta, Indonesia.