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The Earth Today

A regular update on the geologic rumblings of the Earth

November 9, 2003

On November 6, a 2.8 magnitude earthquake was felt 35 km (20 miles) WSW of El Centro, California. (National Earthquake Information Center).


On November 4, a 2.7 magnitude earthquake was felt 10 km (5 miles) SSE of Reading, Pennsylvania. (National Earthquake Information Center).


The Alert Level at Cereme was raised to 2 (on a scale of 1-4) on 13 October after increases in seismic and volcanic activity. During 13-19 October, the seismic network recorded 36 deep-volcanic earthquakes. Seismicity decreased during 20-26 October, with 7 deep-volcanic earthquakes recorded. (Smithsonian Institution Global Volcanism Program).


On 30 October two small eruptions occurred at Colima that consisted of mostly steam and some ash. The plumes rose to about 7.3 km a.s.l. and mainly drifted W. (Smithsonian Institution Global Volcanism Program).


October 27, 2003

On September 21, a 6.6 magnitude earthquake was felt 110 km (65 miles) S of Meiktila, Myanmar. (National Earthquake Information Center).


On September 25, a 8.3 magnitude earthquake was felt 140 km (85 miles) SSW of Kushiro, Hokkaido, Japan. (National Earthquake Information Center).


On October 8, a 6.7 magnitude earthquake was felt 35 km (20 miles) SSE of Kushiro, Hokkaido, Japan. (National Earthquake Information Center).


According to news reports, local authorities issued an alert and closed Cereme to the public after detecting unrest. Several earthquakes were recorded on 17 October. Seismicity increased on 18 October, when 18 earthquakes up to M 2 occurred. Seismicity was felt in seven subdistricts of the Cilimus and Pesawahan districts. (Smithsonian Institution Global Volcanism Program).


According to news reports, the continuing unrest at Mayon led authorities to extend the 6-km-radius Permanent Danger Zone to 7 km in the SE quadrant of the volcano on 13 October. Seismicity and SO2 emissions increased during the previous week. During a 24-hour-monitoring period, ending the night of 17 October, 16 volcanic earthquakes were recorded beneath Mayon's lower flanks. Authorities maintained Alert Level 2 (on a scale of 0-5). (Smithsonian Institution Global Volcanism Program).


September 9, 2003

On September 6, a 4.3 magnitude earthquake was felt 200 km (125 miles) NNW of Anchorage, Alaska. (National Earthquake Information Center).


On September 4, a 5.7 magnitude earthquake was felt 85 km (55 miles) SSE of David, Panama. (National Earthquake Information Center).


During the first week of September, Hurricane Fabian was headed towards Bermuda. Impressive images of this storm can be viewd at NASA Earth Observatory.


June 20, 2003

On June 6, a 4.0 magnitude earthquake was felt 20 km (10 miles) SE of Cairo, Illinois. (National Earthquake Information Center).


On June 20, a 7.1 magnitude earthquake was felt 115 km (70 miles) E of Cruzeiro do Sul, Brazil. (National Earthquake Information Center).


May 13, 2003

On May 12, a 5.5 magnitude earthquake was felt 60 km (40 miles) S of Sibolga, Sumatra, Indonesia. (National Earthquake Information Center).


Chikurachki began erupting on 18 April 2003 and the eruption was clearly continuing through 25 April. Associated ash plumes were over 100 km long. The ongoing eruptions since April 18, 2003, have left a blanket of ash in the central part of the island. View additional images at NASA Earth Observatory (Smithsonian Institution Global Volcanism Program).


May 9, 2003

On May 5, a 3.9 magnitude earthquake was felt 50 km (30 miles) SE of Charlottesville, Virginia. (National Earthquake Information Center).


Also on May 5, a 6.4 magnitude earthquake was felt 65 km (40 miles) SSW of Ternate, Moluccas, Indonesia. (National Earthquake Information Center).


This week Guagua Pichincha was marked by low-to-modest seismicity, which included earthquakes on 30 April and 1 May with magnitudes less than 3. Both had epicenters within an earthquake swarm N of Quito. Episodes of harmonic tremor appeared, most noteworthy on 4 and 5 May with each episode lasting under 40 minutes. (Smithsonian Institution Global Volcanism Program).


April 29, 2003

On April 29, a 4.9 magnitude earthquake was felt 15 km (10 miles) NE of Fort Payne, Alabama. (National Earthquake Information Center).


On April 28, a 2.8 magnitude earthquake was felt 50 km (30 miles) SSE of Portland, Oregon. (National Earthquake Information Center).


Chikurachki stratovolcano, located on Paramushir Island in the Northern Kuriles, began erupting on 18 April 2003. During the next few days observers described the ash falls and substantial plumes with estimated heights up to ~10 km altitude. Observers on Paramushir island saw ash explosions on 18 April; ash fell in Podgorny town and Cape Vasiliev. (Smithsonian Institution Global Volcanism Program).


April 21, 2003

On April 21, a 3.5 magnitude earthquake was felt 55 km (35 miles) NE of King City, California. (National Earthquake Information Center).


On April 17, a 6.4 magnitude earthquake was felt 190 km (120 miles) NE of Golmud, Qinghai, China. (National Earthquake Information Center).


Increased seismic and volcanic activity at Llaima during 9-11 April led officials to put the volcano at Alert Level Yellow. Seismic signals indicating weak eruptive activity were recorded and observations made during a flight revealed a thin layer of pyroclastic material atop a glacier on the NE flank. In addition to extensive fumarolic activity, observers saw new cracks in the glacier. Only weak fumaroles were seen during 12-13 April. (Smithsonian Institution Global Volcanism Program).


April 15, 2003

On April 12, a 5.4 magnitude earthquake was felt 35 km (25 miles) W of Batangas, Luzon, Philippines. (National Earthquake Information Center).


April 11, 2003

On April 11, a 6.1 magnitude earthquake was felt 365 km (230 miles) SW of PANAMA CITY, Panama. (National Earthquake Information Center).


On April 10, a 5.7 magnitude earthquake was felt 35 km (20 miles) SW of Izmir, Turkey. (National Earthquake Information Center).


A strong explosion at Stromboli on 5 April around 0915 produced a mushroom-shaped ash cloud that rose several hundred meters above the volcano. Rocks ejected during the explosion damaged two homes and several roads in the town of Ginostra ~ 2 km SW of Stromboli's summit. There were no reports of injuries. (Smithsonian Institution Global Volcanism Program).


April 7, 2003

On April 7, a 5.5 magnitude earthquake was felt 85 km (55 miles) SE of Iwaki, Honshu, Japan. (National Earthquake Information Center).


On April 3, a 3.1 magnitude earthquake was felt 275 km (170 miles) SE of ATHENS, Greece. Several other smaller earthquakes were felt in the area on the 2nd and 3rd of April. (National Earthquake Information Center).


During 17-23 March, white-thick ash emissions rose to ~300 m above Lokon-Empung (Indonesia), ash explosions occurred, and there was a significant decrease in emission earthquakes compared to the previous week. On 27 March at 0156 an explosion ejected ash to 1.5 km and incandescent volcanic material to 400 m above the crater. (Smithsonian Institution Global Volcanism Program).


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