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Earth Happenings Archive
September 5, 2001 to September 28, 2001
September 27, 2001
On Wednesday, September 26th, an earthquake of magnitude 5.3 occurred 600 km down into the mantle, in the area between Fiji and the Kermadec Islands, in the southwestern Pacific Ocean (National Earthquake Information Center). Earlier that same day, an earthquake of magnitude 5.2 occurred southwest of Pago Pago in the Fiji Islands (National Earthquake Information Center), and another of magnitude 5.4 occurred northeast of Papua New Guinea (National Earthquake Information Center). Much earlier that day, an earthquake of magnitude 5.1 occurred in the Dodecanese Islands, between Crete and Turkey, in the southeastern portion of the Greek islands (National Earthquake Information Center).
On Tuesday, September 25th, a shallow earthquake of magnitude 5.4 occurred off the east coast of India, on the western Bay of Bengal (National Earthquake Information Center). An earthquake of magnitude 5.4 also occurred about 50 km (30 miles) ESE of St. John's, Antigua, in the eastern Caribbean Sea (National Earthquake Information Center). Another of magnitude 5.1 occurred beneath the central Kuril Islands on the NW margin of the Pacific Ocean (National Earthquake Information Center), and one of magnitude 5.0 occurred in the Kermadec Islands region of the southwestern Pacific (National Earthquake Information Center).
At Sheveluch Volcano, Kamchatka , Russian Far East, the current level of concern color code is orange (Alaska Volcano Observatory), meaning an eruption is imminent or may actually be occurring; ash and steam eruptions were reported for the week of September 14-21 (Smithsonian Institution Global Volcanism Program). Background information on Sheveluch Volcano is available at Volcano World.
On September 22nd, a shallow earthquake of magnitude 5.6 occurred in the Colombian Andes in northwestern South America (National Earthquake Information Center). A small earthquake of magnitude 2.6 on this same date was also felt over a portion of central Arkansas (National Earthquake Information Center).
On September 21st, a submarine volcanic eruption began off the coast of Iwo Jima, Japan (Smithsonian Institution Global Volcanism Program), Weekly Volcanic Activity Report. Also on this day, an earthquake of magnitude 5.1 occurred near Selam, in central Indonesia (National Earthquake Information Center).
September 21, 2001
On Thursday, September 20th, a magnitude 4.5 earthquake occurred 65 miles WSW of Eureka, California, along the Mendocino Fracture Zone (National Earthquake Information Center).On this same day, a magnitude 5.5 earthquake occurred with an epicenter south of Bali, Indonesia (National Earthquake Information Center).
On Tuesday, September 18th, another significant earthquake of magnitude 4.7 occurred southwest of Vancouver Island, British Columbia, Canada (National Earthquake Information Center). On this same day, a magnitude 6.0 earthquake occurred in the Banda Sea, northeast of Timor (National Earthquake Information Center).
On Monday, September 17th, the earthquake activity continued southwest of Vancouver Island with a tremor of magnitude 5.4 (National Earthquake Information Center).
On September 15th, an earthquake of magnitude 6.0 occurred in the Tonga Islands in the southwestern Pacific Ocean (National Earthquake Information Center).
On September 14th, a magnitude 5.8 earthquake occurred SW of Vancouver Island ( National Earthquake Information Center), continuing the activity in this area. This was followed later the same day by earthquakes of magnitude 4.7 and 4.8, and one on the 15th of magnitude 4.9 (National Earthquake Information Center).
During 7-14 September, several gas-and-ash plumes produced from explosions at Shiveluch Volcano, Kamchatka, Russian Far East ( Smithsonian Institution Global Volcanism Program - Preliminary Notices of Volcanic Activity).
Activity at Soufrière Hills Volcano, Montserrat, West Indies, remained at levels similar to the previous week. Bands of tremor, associated with rockfalls and ash venting, occurred at irregular intervals. On 12 September, a continuous low-amplitude tremor began and persisted until at least 14 September ( Smithsonian Institution Global Volcanism Program - Preliminary Notices of Volcanic Activity).
September 13, 2001
On September 13th, a 5.2 magnitude earthquake occurred 70 miles (110 km) SW of Hilo, Hawaii (National Earthquake Information Center), and was probably part of the ongoing volcanic/seismic activity beneath Loihi Seamount.
Also on September 13th, a magnitude 5.9 earthquake hit the Bonin Islands portion of Japan. (National Earthquake Information Center), and a magnitude 5.2 earthquake occurred in the NE Pacific Ocean about 200 km SW of Port Hardy, British Columbia (National Earthquake Information Center).
On September 12th, a magnitude 5.0 earthquake occurred about 130 miles (210 km) SSW of Port Hardy, Vancouver Island, British Columbia, Canada, in the NE Pacific Ocean (National Earthquake Information Center); this was followed shortly by a second earthquake of magnitude 4.9 in the same region (National Earthquake Information Center).
On September 10th, an earthquake swarm began beneath Loihi Seamount, south of the Big Island of Hawai'i, that was probably associated with submarine volcanic activity (Smithsonian-USGS Weekly Volcanic Activity Report).
A lava flow that began to cover a county lava-viewing road at Kilauea Volcano in Hawai'i on 1 September ceased flowing by 5 September (Smithsonian-USGS Weekly Volcanic Activity Report).
On the island of Luzon, in the Philippine Islands, workers began to partially drain Pinatubo's rapidly rising crater lake on 6 September, following the evacuation of ~40,000 NW-flank residents the previous day ( Smithsonian-USGS Weekly Volcanic Activity Report).


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