US-WASHINGTON
This volcano erupted on -1860 B.C. in UnitedStates where it released a signifant amount of explosivity , reaching a Volcanic Explosivity Index of 6 (VEI: 6). The VEI scale was developed by the USGS and is open-ended with the largest volcanoes in history given a magnitude 8. A value of 0 is given for non-explosive eruptions . This particular volcano, named St.Helens is classified as a historical stratovolcano and is perched at an elevation of 2549ft.
Surface Geology
Underlying geological composition for the surrounding area.
Alaska Peninsula and Aleutian Islands - porphyry copperTertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands
Pacific Margin - porphyry copper
Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia.
Surface Lithology
Qv - Igneous - VolcanicYoungest volcanic rocks
Related USGS Publications
70159748 - 2016 - Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust70142817 - 2015 - Basement and regional structure along strike of the Queen Charlotte Fault in the context of modern and historical earthquake ruptures
sir20155110 - 2015 - 2013 volcanic activity in Alaska: summary of events and response of the Alaska Volcano Observatory
Latest Volcano Events
Recent Volcano activity from around the globe.
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Sabancaya Volcano Volcanic Ash Advisory: EMISSION OF VA AND GASES
2019-02-16T11:37:30Z
Sabancaya Volcano Volcanic Ash Advisory: EMISSION OF VA AND GASES ... VOLCANO: SABANCAYA 354006 ... Sabancaya volcano eruptions: -
Moderate mag. 5.3 earthquake - 262km NE of Santa Cruz das Flores, Portugal on Saturday, 16 ...
2019-02-16T07:07:30Z
Depth: 10.0 km. Epicenter latitude / longitude: 41.3292°N / 29.2389°W (Portugal) Nearest volcano: Corvo (240 km) Primary data source: USGS. -
Sabancaya Volcano Volcanic Ash Advisory: SPORADIC EMISSION
2019-02-16T05:26:15Z
Sabancaya Volcano Volcanic Ash Advisory: SPORADIC EMISSION. Saturday ... VOLCANO: SABANCAYA 354006 ... Sabancaya volcano eruptions: -
Light mag. 4.5 earthquake - MOROCCO on Saturday, 16 February
2019-02-16T04:47:20Z
Epicenter latitude / longitude: 34.88°N / 4.6°W (Morocco) Nearest volcano: Olot Field (1017 km) Primary data source: EMSC. [show map]. +−. 500 km. -
Semper Fi Fund clinics help injured vets like Chad Ohmer pursue Paralympic dreams
2019-02-16T04:30:00Z
The 2014 U.S. Paralympic Alpine skier Lujan was given the nickname when he threw a temper tantrum on top of the actual volcano. Several years ... -
Karymsky Volcano Volcanic Ash Advisory: VA AT 20190216/0227Z FL100 EXTD SE REPORTED ...
2019-02-16T04:07:30Z
Karymsky Volcano Volcanic Ash Advisory: VA AT 20190216/0227Z FL100 EXTD SE REPORTED OBS VA DTG: 16/0330Z to 10000 ft (3000 m).
| Nearby Tsunamis | |
|---|---|
|
6.7 mag |
MONTEREYBAY,N.CALIFORNIA 03-03-1901 T07:45:00 |
|
7 mag |
N.MEXICO 11-29-1852 T00:00:00 |
|
5.7 mag |
S.CALIFORNIA 01-01-1927 T08:17:00 |
|
7.3 mag |
S.CALIFORNIA 11-04-1927 T13:50:43 |
|
7.3 mag |
S.CALIFORNIA 03-26-1872 T10:30:00 |
|
6.9 mag |
N.CALIFORNIA 10-18-1989 T00:04:15.2 |
|
6.3 mag |
N.CALIFORNIA 10-08-1865 T20:46:00 |
|
5.5 mag |
N.CALIFORNIA 02-15-1856 T13:25:00 |
|
6.8 mag |
N.CALIFORNIA 10-21-1868 T15:53:00 |
|
7.9 mag |
N.CALIFORNIA 04-18-1906 T13:12:00 |
| Volcano Measurement | |
|---|---|
| |
| Volcano Stats | |
|---|---|
| year | -1860 |
| id | 11 |
| location | US-Washington |
| time | -1860 B.C. |
| latitude | 46.2 |
| type | Stratovolcano |
| vei | 6 |
| status | Historical |
| elevation | 2549 |
| name | St.Helens |
| longitude | -122.18 |
| country | UnitedStates |