August 15 , 2016. EN. Yasur , Sheveluch , Santiaguito , Soufrière Hills .

Home / blog georges Vitton / August 15 , 2016. EN. Yasur , Sheveluch , Santiaguito , Soufrière Hills .

August 15 , 2016. EN. Yasur , Sheveluch , Santiaguito , Soufrière Hills .

August 15 , 2016.


Yasur , Tanna Island , Archipelago  of  Vanuatu :

19°32’0”S 169°26’30”E
Summit 1184ft (361m)
Current Vanuatu Volcano Alert Level: Level 2

The Alert Level for Tanna Volcano remains at Level 2.

This means that the volcanic explosions remain intense, volcanic bombs may fall in and/or around the crater and volcanic gas and ashes can also affect some villages.

The area of risk remains around the volcanic crater and in areas expose to trade winds.

The permanent Exclusion Zone which is around 600m wide around the eruptive vents is always closed (Shouldn’t be Access) but the Zones (Zone A and B) beyond this area are opened (Could be Access) (See photo below).

This is another reminder to all visitors to observe this volcano away from the crater rim to avoid volcano activity related impacts. See the safety map and Yasur visitors Fact-Sheet at the Vanuatu Geohazards website

All communities, villages, visitors and travel agencies have to seriously consider this information.

The Department of Meteorology and Geohazards will continue to closely monitor this volcano activity. More information will be provided when necessary.
Source : Geohazard

Photo : Georges Vitton


Sheveluch , Kamchatka :

56.64 N, 161.32 E;
Elevation 10768 ft (3283 m), the dome elevation ~8200 ft (2500 m)
Aviation Color Code is ORANGE

Explosive-extrusive eruption of the volcano continues. Ash explosions up to 32,800 ft (10 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

A growth of the lava dome continues (a viscous lava flow reveal in the northern its part), strong fumarole activity, ash explosions, hot avalanches and an incandescence of the dome blocks and hot avalanches accompany this process. Satellite data by KVERT showed a thermal anomaly over the lava dome all week.

Hot avalanche from western flank of the lava dome of Sheveluch volcano sent ash up to 3.5 km a.s.l. on 12 July, 2016.

The activity of the volcano remains essentially unchanged at currently low to moderate levels. The slow growth of the lava dome continues as viscous (sticky) lava accumulates in the dome. A (small) part of the inherently unstable dome collapsed yesterday morning and generated a pyroclastic flow that traveled down the SW valley between the dome and the remnants of the 1964 collapse scar, which forms a horse-show shaped wall around the dome.
The flow reached approx. 1500 m length and was 300-400 m wide. A second flow of similar size occurred immediately after. The resulting ash plume rose approx. 1 km.

Source : Kvert , Volcanodiscovery.

Photo : Yu. Demyanchuk, IVS FEB RAS, KVERT


Santiaguito , Guatemala :

The Santiaguito volcano  Observatory reported at 6:29 (local time) a new strong explosion, accompanied by impacts was generated. The explosion sent a gray column to the South. The activity was accompanied by pyroclastic flows on the eastern flank of the volcanic complex of Santiaguito, with thick ash columns that can reach a larger displacement up to 15 kilometers to the south.


The thick column of ash to a height of about 3800 meters (12,467 feet), moves in different directions mainly to the south and the southwest of the volcano with ash fall in areas of San Felipe, Mazatenango and Retalhuleu.
Following the explosion, the column of fine ash, can move further in the next hours.
The activity of the Santiaguito volcano continues to generate this type of events, it must be taken the necessary precautions and avoid staying near the volcanic area, and to take precautions because the ash contaminates drinking water.

Source : Insivumeh


Soufrière Hills , Montserrat :

MVO Weekly Report for the Period 29 July to 5 August 2016

Activity at the Soufrière Hills Volcano remains low.

The seismic network recorded no volcano-seismic events this week.

Sulphur-dioxide measurements were not possible during the reporting period.
soufrière hills

The Dôme at night ,  January 29 ,  2010

Pyroclastic flows can occur at any time without warning on any side of the volcano, including Gages from where they can travel rapidly into Plymouth. Tracks across the Belham valley are frequently destroyed or heavily modified by flash flooding or lahars, and caution should be exercised crossing the valley during and after rainfall.

The Hazard Level is 1. There is no public access to Zone V, including Plymouth. Maritime Zones E and W are daytime transit only between sunrise and sunset (boats may sail through the zone but must not stop). Anyone who ignores these restrictions is liable to be prosecuted.
Source : MVO

Photo : Photovolcanica

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