November 20 , 2017. EN. Bromo , Kilauea , Mayon , Reventador , Popocatepetl .

Home / blog georges Vitton / November 20 , 2017. EN. Bromo , Kilauea , Mayon , Reventador , Popocatepetl .

November 20 , 2017. EN. Bromo , Kilauea , Mayon , Reventador , Popocatepetl .

November 20 , 2017.

Bromo , Indonesia :

Sutopo Purwo Nugroho, Head of Information and Public Relations Data Center at National Disaster Management Agency (BNPB), says his side has raised the status of Mount Bromo to alert level two.

According to Sutopo, currently the peak of Mount Bromo appears in the clouds. There emerges low pressure crater smoke with a height of 50-500 meters (m) above the top of the crater.
« The peak of Mount Bromo appears in the middle of the clouds, alert status [level 2], » Sutopo said, as quoted from his official twitter,@Sutopo_BNPB, on Sunday (19/11/2018).
Sutopo said now there is a smell of sulfur concentrated in the post of Volcano Monitoring Center (PGA). Continuous tremors (microtremor) are recorded with amplitude of 0.5-1 mm (dominant 1 mm).

Photo : Oystein Lund Andersen

Kilauea , Hawaï :

19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary:
No significant change. Kīlauea Volcano continues to erupt at the summit and the Puʻu ʻŌʻō vent on its East Rift Zone. The episode 61g lava flow activity persists on the upper portion of the flow field, on the pali, and in scattered areas on the coastal plain. These lava flows pose no threat to nearby communities at this time. The lava lake surface is approximately 40 m (131 ft.) below the floor of Halemaʻumaʻu. Low rates of ground deformation and seismicity continue across the volcano.

Summit Observations:
Tiltmeters at Kīlauea’s summit are recording inflationary tilt; over the last 24 hours the volcano experienced a cycle of inflation-deflation and now inflationary tilt. The lava lake surface is approximately 40 m (131 ft.) below the rim of the Overlook Vent, based on web camera images. Seismicity is within normal, background rates with tremor fluctuations associated with lava lake spattering. Summit sulfur dioxide emission rates remain high.

Puʻu ʻŌʻō Observations:
Webcam images over the past 24 hours show persistent glow at long-term sources within the crater and from a small lava pond on the west side of the crater. There were no significant changes in seismicity over the past 24 hours. The tiltmeter is recording a deflationary trend. The sulfur dioxide emission rate from the East Rift Zone vents has been steady over the past several months and remains significantly lower than the summit emission rate.

Lava Flow Observations:
The episode 61g flow is still active. Based on overnight web camera images, surface lava flow activity persists on the upper portion of the flow field, on the pali, and in scattered areas on the coastal plain. A field crew visited the ocean entry, on Friday, and found that activity at the ocean entry stopped and activity on the lava delta was in a dramatic state of decline; very sluggish, pasty flows in a few random spots and very little to no degassing in the usual places. None of these flows poses any threat to nearby communities at this time. At Kamokuna delta this morning, there is no plume is visible in webcam images

Source : HVO
Photo : HVO , Bruce Omori

Mayon , Philippines :

MAYON VOLCANO BULLETIN 20 November 2017 8:00 A.M.

Mayon Volcano’s seismic monitoring network recorded two (2) volcanic earthquakes during the past 24 hours. Moderate emission of white steam-laden plumes that drifted west-northwest was observed. Precise leveling data obtained on November 7 to 11, 2017 indicated slight inflation of the edifice relative to September 2017. Continuous GPS and tiltmeter measurements also indicate an inflationary trend since July 2016. Sulfur dioxide (SO2) emission was measured at an average of 633 tonnes/day on November 03, 2017. Alert Level 1 remains in effect over Mayon Volcano, which means that it is at abnormal condition.

Although this means that presently no magmatic eruption is imminent, it is strongly advised that the public refrain from entering the 6-kilometer radius Permanent Danger Zone (PDZ) due to the perennial life-threatening dangers of rockfalls, landslides/avalanches at the middle to upper slope, sudden ash puffs and steam-driven or phreatic eruptions from the summit. Active stream/river channels and those identified as perennially lahar-prone areas on all sectors of the volcano should also be avoided especially during extreme weather conditions when there is heavy and prolonged rainfall. DOST-PHIVOLCS maintains its close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.

Source : Phivolcs

Reventador , Ecuador :

Activity Bulletin of the Reventador Volcano, 19 November 2017. Information from the Geophysical Institute – EPN:

Level of activity:
Superficial: Surface Trend: High, No Change
Internal: Internal trend: High, No change

Seismicity: From 18 November 2017 to 19 November 2017, 32 Long Period (LP) events, 29 Explosions (EXP), 12 Transmission Tremors (TE), 3 Harmonic Tremor events (TA) were recorded. ).

Rain / lahars: Rain not recorded

Emission / Ash Column: During today’s morning between the clouds, vapor, gas and ash emissions have been observed that have exceeded 600 meters at the crater level, dissipating in the North direction -Where is.

Other monitoring parameters: No change

Observations: Incandescence at the top and blocks down to 300 meters below the crater level were observed on the south and southwest flanks.

Alert level: Orange.

Source : IGEPN

Popocatépetl , Mexico :

November 19, 10:30 am (November 19, 16:30 GMT)

In the last 24 hours, thanks to the seismic monitoring systems of the Popocatépetl volcano, 310 low intensity exhalations accompanied by water vapor and gas have been identified. In addition, five explosions were recorded, including three yesterday at 3:42 pm, 6:11 pm and 11:22 pm and two today at 0:22 am, with emission of incandescent fragments on the east slope, and the last at 6:49 am, most explosions issued a column that has reached more than 2 kilometers. In addition, yesterday an earthquake at 11:15 pm with an amplitude of M2.0 was recorded. Finally, there were 395 minutes of harmonic tremor of low amplitude.

Today, in the morning, the volcano is observed with a continuous emission of water vapor, gas and small quantities of ash towards the North-East.
CENAPRED asked not to approach the volcano and in particular the crater, because of the risk of falling of projectiles, and in case of heavy rain to remain far from the bottom of the ravines because of the danger of landslides and flows of mud.
The volcanic alert signaling flag of the Popocatepetl volcano is located at Amarillo Phase 2.

Source : Cenapred.
Photo :9Chuytorres

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