Irazu volcano

Updated: Aug 17, 2022 01:00 GMT - Refresh
Stratovolcano 3432 m / 11,260 ft
Costa Rica, 9.98°N / -83.85°W
Current status: normal or dormant (1 out of 5)
Last update: 22 Dec 2021 (Smithsonian / USGS Weekly Volcanic Activity Report)

Irazú (3432 m) immediately east of the capital San José is Costa Rica's highest and one of its most active volcanoes. Tephra fall (ash) during the last major eruption of Irazú in 1963-65 caused heavy damage to infrastructure and life in San José and its surroundings.

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Typical eruption style: Explosive.
Irazu volcano eruptions: 1726, 1775(?), 1821(?), 1822, 1823, 1826(?), 1842, 1844(?), 1847, 1864, 1875, 1882(?), 1909(?), 1914(?), 1917-21, 1924, 1928, 1930, 1933, 1939-40, 1963-65, 1977, 1994
Lastest nearby earthquakes:
TimeMag. / DepthDistance/Location
Tuesday, August 16, 2022 GMT (1 quake)
Aug 16, 2022 5:02 pm (GMT -6) (Aug 16, 2022 23:02 GMT)
2.9

3 km
72 km (45 mi)
26 km southwest of Ciudad de Limon, Costa Rica
Saturday, August 13, 2022 GMT (1 quake)
Aug 13, 2022 2:02 am (GMT -6) (Aug 13, 2022 08:02 GMT)
2.9

7 km
16 km (9.9 mi)
9.9 km north of Turrialba, Provincia de Cartago, Costa Rica
Thursday, August 11, 2022 GMT (1 quake)
Aug 10, 2022 11:21 pm (GMT -6) (Aug 11, 2022 05:21 GMT)
2.9

63 km
30 km (19 mi)
6.3 km south of San Jose, San José, Costa Rica
Wednesday, August 10, 2022 GMT (1 quake)
Aug 10, 2022 12:58 pm (GMT -6) (Aug 10, 2022 18:58 GMT)
2.8

6 km
32 km (20 mi)
17 km south of Paraiso, Provincia de Cartago, Costa Rica
Tuesday, August 9, 2022 GMT (1 quake)
Aug 9, 2022 4:45 am (GMT -6) (Aug 9, 2022 10:45 GMT)
2.9

1 km
99 km (62 mi)
Caribbean Sea, 9.8 km east of Ciudad de Limon, Costa Rica

Background

Irazú is a massive stratovolcano covering more than 500 sq km with at least 10 flank cones on the southern flank, all being older than at least 14,000 years when a massive lava flow (the "Ceravantes" flow) was erupted.
All known eruptions from Irazú during the past 10,000 years have been explosive and originated from the summit craters that show a migration to the W over time. The historically active crater contains a small acid lake of changing size and color.
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Source: GVP, Smithsonian Institution

Irazu Photos

The lake-filled crater of Irazu volcano, Costa Rica (Photo: Tom Pfeiffer)
The lake-filled crater of Irazu volcano, Costa Rica (Photo: Tom Pfeiffer)
Crater El Piroclastico of Irazu Volcano near Cartago, Costa Rica (Photo: WNomad)
Crater El Piroclastico of Irazu Volcano near Cartago, Costa Rica (Photo: WNomad)
Crater Principal of Irazu Volcano, near Cartago, Costa Rica (Photo: WNomad)
Crater Principal of Irazu Volcano, near Cartago, Costa Rica (Photo: WNomad)
Laguna del Irazu Volcano, Costa Rica (Photo: WNomad)
Laguna del Irazu Volcano, Costa Rica (Photo: WNomad)
 



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