Alerts

Semeru Volcano Volcanic Ash Advisory: ERUPTION LAST REPORTED AT 27/0847Z EST VA DTG: 27/1140Z

Published: 27 August 2025
Categories: Global Volcano Activity

RSS feed source: Volcano Discovery.com

<!–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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Flash Flood Warning issued August 27 at 5:59AM MDT until August 27 at 7:30AM MDT by NWS Albuquerque NM

Published: 27 August 2025
Categories: National Weather Service

RSS feed source: Volcano Discovery.com

At 559 AM MDT, river gauge reports indicated increasing flows along the Mora River from earlier heavy rainfall. Flash flooding may occur on the Mora River between La Cueva, Golondrinas and areas toward Watrous. Of particular concern is where Coyote Creek meets the Mora River just downstream of Golondrinas as Coyote Creek also had a steep rise in water early this morning. Flash flooding is ongoing or expected to begin shortly. HAZARD…Flash flooding caused by thunderstorms. SOURCE…Gauges reported. IMPACT…Flash flooding of rivers, creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include… La Cueva, Golondrinas

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Moderate mag. 4.2 earthquake (unconfirmed) – Estado de Oaxaca, Mexico, on Wednesday, Aug 27, 2025, at 05:58 am (GMT -6)

Published: 27 August 2025
Categories: Global Earthquake Activity

RSS feed source: Volcano Discovery.com

Date and TimeMag
DepthDistanceLocationDetailsMap Aug 27, 01:00 am (Mexico City)

4.1

77 km93 km (58 mi) to the W 64 km east of Miahuatlan de Porfirio Diaz, Estado de Oaxaca, Mexico  I FELT IT InfoAug 24, 01:56 pm (Mexico City)

4.2

131 km96 km (60 mi) to the N 36 km north of Matias Romero, Estado de Oaxaca, Mexico  I FELT IT InfoAug 20, 11:01 am (Mexico City)

4.3

127 km92 km (57 mi) to the NE 42 km northeast of Matias Romero, Estado de Oaxaca, Mexico  I FELT IT InfoAug 19, 05:36 pm (Mexico City)

4.0

125 km99 km (61 mi) to the NE Oaxaca, Mexico InfoAug 18, 01:55 am (GMT -6)

4.0

16 km93 km (58 mi) to the S North Pacific Ocean, 76 km south of Salina Cruz, Estado de Oaxaca, Mexico InfoAug 17, 12:15 am (Mexico City)

4.2

82 km25 km (15 mi) to the NE Oaxaca, Mexico InfoAug 16, 11:53 pm (Mexico City)

4.3

47 km86 km (53 mi) to the W 74 km west of Santo Domingo Tehuantepec, Estado de Oaxaca, Mexico InfoAug 11, 07:58 am (GMT -6)

4.3

45 km79 km (49 mi) to the SE North Pacific Ocean, 70 km southeast of Salina Cruz, Estado de Oaxaca, Mexico InfoOct 6, 2023 11:06 pm (Mexico City)

6.0

110 km69 km (43 mi) to the N Mexico: 12 Km Al NOROESTE De MATIAS ROMERO, OAX 127 reportsInfoMar 1, 2023 10:40 pm (Mexico City)

5.8

98 km66 km (41 mi) to the E Mexico: 47 Km Al SURESTE De UNION HIDALGO, OAX 169 reportsInfoMar 5, 2022 09:29 pm (Mexico City)

5.6

88 km47 km (29 mi) to the N 43 km northwest of

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Flash Flood Warning issued August 27 at 5:58AM MDT until August 27 at 8:00AM MDT by NWS Salt Lake City UT

Published: 27 August 2025
Categories: National Weather Service

RSS feed source: Volcano Discovery.com

At 558 AM MDT, Doppler radar and automated rain gauges indicated 0.50 to 0.80 inches of rain fell across the area earlier, and flash flooding is likely ongoing. HAZARD…Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE…Radar and automated gauges. IMPACT…Life threatening flash flooding of creeks and streams, normally dry washes, slot canyons, and slick rock areas. Some locations that will experience flash flooding include… Zion National Park, Springdale and Rockville. The heaviest rainfall occurred over the Pine Creek and Clear Creek drainages along Highway 9 near the Zion-Mount Carmel Tunnel. The Zion Canyon automated weather station has received 0.79 inches since 4 AM.

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