Small 3.4 quake hits near Pomona, Los Angeles County, California, USA

Published: 6 September 2025
Categories: Global Earthquake Activity

RSS feed source: Volcano Discovery.com--Global earthquake monitor

Sun, 7 Sep 2025, 00:25 | BY: EARTHQUAKEMONITOR

A very shallow magnitude 3.4 earthquake was reported in the afternoon near Pomona, Los Angeles County, California, USA.
According to the United States Geological Survey, the quake hit on Saturday, September 6th, 2025, at 5:11 pm local time at a very shallow depth of 4.8 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by The Incorporated Research Institutions for Seismology (IRIS), which listed it as a magnitude 3.2 earthquake. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 3.4.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in San Antonio Heights (pop. 3,400) located 6 miles from the epicenter, and Glendora (pop. 52,000) 8 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Upland (pop. 76,400) located 9 miles from the epicenter, Pomona

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Semeru Volcano Volcanic Ash Advisory: VA TO FL150 OBS AT 06/2300Z MOV S EST VA DTG: 06/2330Z to 15000 ft (4600 m)

Published: 6 September 2025
Categories: Global Volcano Activity

RSS feed source: Volcano Discovery.com--Global earthquake monitor

<!–div style="font-size:14px;text-align:center;border:3px solid blue;border-radius:5px;padding:3px;margin:5px;background:#eee"><a href="https://www.volcanoesandearthquakes.com/app/volcano-report.php?volcanoId=44" style="text-decoration:none" target="_blank" rel="noopener noreferrer nofollow" title="Share a volcano (activity) report, submit a photo or other interesting news!” onclick=”window.open(this.href,’Volcano Report’,’status=0,toolbar=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1,height=500,width=450′);return false”>Send Volcano Report</div–> Stratovolcano 3676 m (12,060 ft)
East Java, Indonesia, -8.11°S / 112.92°E
Current status: erupting (4 out of 5) Semeru volcano eruptions:
1818, 1829, 1830, 1832, 1836, 1838, 1842, 1844, 1845, 1848, 1849(?), 1851, 1856, 1857, 1865, 1866(?), 1887, 1887, 1888, 1889-91, 1892, 1893, 1893-94, 1895, 1896, 1897, 1899, 1899, 1900, 1901, 1903, 1904, 1905, 1907, 1908, 1909-10, 1910-11, 1911, 1912, 1913, 1941-42, 1945, 1946, 1946-47, 1950-64, 1967-ongoing
Typical eruption style
Explosive. Near constant strombolian activity, occasionally stronger explosions, lava flows and pyroclastic flows.

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Fuego Volcano Volcanic Ash Advisory: OCNL VA EM

Published: 6 September 2025
Categories: Global Volcano Activity

RSS feed source: Volcano Discovery.com--Global earthquake monitor

<!–div style="font-size:14px;text-align:center;border:3px solid blue;border-radius:5px;padding:3px;margin:5px;background:#eee"><a href="https://www.volcanoesandearthquakes.com/app/volcano-report.php?volcanoId=26" style="text-decoration:none" target="_blank" rel="noopener noreferrer nofollow" title="Share a volcano (activity) report, submit a photo or other interesting news!” onclick=”window.open(this.href,’Volcano Report’,’status=0,toolbar=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1,height=500,width=450′);return false”>Send Volcano Report</div–> Stratovolcano 3,763 m / 12,346 ft
Guatemala, 14.47°N / -90.88°W
Current status: erupting (4 out of 5) Fuego volcano eruptions:
1581, 1585, 1586, 1587, 1614, 1617, 1620, 1623, 1629, 1679(?), 1685, 1686, 1689(?), 1699, 1702, 1705, 1706, 1709(?), 1710,1717,1730, 1732, 1737, 1751(?), 1765(?), 1773(?), 1799, 1826, 1829, 1850(?), 1852(?), 1855, 1856, 1857, 1860, 1861(?), 1867(?), 1880, 1896, 1932, 1944, 1949, 1953, 1955, 1957, 1962, 1963, 1966, 1967, 1971, 1973, 1974, 1975, 1977, 1987, 1999, 2002 – ongoing
Typical eruption style
Dominantly explosive, construction of lava domes and extrusion of viscous lava flows. In near constant activity, at least during the past centuries.

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