August 25 , 2016. FR. Kilauea , Soufrière Hills , Popocatepetl , Santiaguito .
August 25 , 2016.
Kilauea , Hawai :
19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
In concert with inflationary tilt, the level of Kīlauea Volcano’s summit lava lake rose over the past day and was measured at 28 m (92 ft) below the vent rim this morning. With the higher lake level, and between passing heavy fog and rain showers throughout the day, vigorous spattering on the lake surface was visible from the Jaggar Museum Overlook in Hawaiʻi Volcanoes National Park. Because of calm winds, noise associated with the spattering could be heard from the Jaggar Overlook—amidst the occasional rumble from weather-related thunder.( HVO)
Kilauea Volcano continues to erupt at its summit and from its East Rift Zone. The 61g lava flow continues to enter the ocean at Kamokuna and produce scattered breakouts on the coastal plain and pali. The flow poses no threat to nearby communities. Activity of the Halema’uma’u lava lake continues, with its surface around 20 m (66 ft) below the crater rim. Over the past day, views of spattering from the lava lake have been visible from the Jaggar overlook.
The circulating lava lake within the Halema’uma’u Overlook crater remains active. Inflationary tilt, which began Sunday afternoon, continues this morning. The lava lake surface level has risen in concert with the tilt, and is approximately 20 m (66 ft) below the crater rim. This is among the highest measured levels of the lake since May 2015, and spattering has been visible from the Jaggar overlook during the past day. Seismicity rates are normal, with tremor fluctuations associated with lava lake spattering. The average daily summit sulfur dioxide emission rate ranged from 4,000 to 4,300 metric tons/day over the past week.
Pu’u ‘O’o Observations:
Limited webcam images (due to inclement weather) suggest no significant changes; intermittent views show that persistent glow continues at the long-term sources within the crater. There was no significant change in seismicity or tilt over the past day. The sulfur dioxide emission rate from all East Rift Zone vents was about 270 metric tons/day when last measured on August 19.
Lava Flow Observations:
Activity of the 61g lava flow, extending southeast of Pu’u ‘O’o on Kilauea’s south flank, continues. The flow is entering the sea at several places near Kamokuna , spanning about 1 km (0.6 mi) of coastline, and building an increasingly large lava delta at the base of the sea cliff. Scattered breakouts continue, predominantly on the pali, and the makai (seaward) portion of the coastal plain.
*HAWAII VOLCANOES NATIONAL PARK – A magnitude 3.8 earthquake shook 4 miles south of Volcano Village on Wednesday afternoon. The epicenter was located near the Chain of Craters Road southeast of the Kilauea summit inside the Hawaii Volcanoes National Park.
The temblor occurred at around 12:17 p.m. HST at a depth of 3 km.
USGS Hawaiian Volcano Observatory reported seismicity rates were normal this morning, “with tremor fluctuations associated with lava lake spattering.”
Source : HVO, bigislandvideonews.com.
Photos : HVO , Tom Kualii ( paradise helicopters)
Soufrière Hills , Montserrat :
MVO Weekly Report for the Period 12 to 19 August 2016
Activity at the Soufrière Hills Volcano remains low.
The seismic network recorded two rockfalls and one volcano-tectonic earthquake this week.
This is the upper crossing of the Belham Valley this morning. A lahar caused by the heavy rain has cut the road, making it impassable.
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 can be destroyed or heavily modified by flash flooding or lahars, and caution should be exercised crossing the valley during and after rainfall.
Source : MVO.
Popocatepetl , Mexico :
August 24 11:05 h (August 24 16:00 GMT)
In the last 24 hours the seismic records of the surveillance system at Popocatépetl volcano registered 48 low-intensity exhalations probably accompanied by emissions of steam and gas. Adicionaly, were registered 45 min of harmonic tremor in different episodes and also two volcanotectonic earthquakes, the first yesterday at 8:30 h M=1.0 and the second today at 6:05 h with M=1.2.
At the time of this report we cannot see the volcano due to cloudy conditions, but this morning we observed with continuous emission of steam and gas in a northwesterly direction .
CENAPRED emphasizes that people SHOULD NOT go near the volcano, especially near the crater, due to the hazard caused by ballistic fragments .
This type of activity is included within the scenarios Volcanic Traffic Light Yellow Phase 2.
Source : Cenapred
Photo : Cristobal Garciaferro
Santiaguito , Guatemala :
According to the volcanic monitoring of the INSIVUMEH and OVSAN, Santiaguito volcano continues its explosive activity. Yesterday at 2:03 pm, the seismic station Stg3 recorded a strong explosion raising a cloud of ash , mushroom-shaped , to a height of about 5000 meters.
That has spread to the West and South West of the volcanic complex to reach a distance of 40 km.
These explosions generate pyroclastic flows on the eastern flank of the dome and hot lahars in the bed of the river Nima 1.
Ash falls were reported in Loma Linda, San Marcos Palajunoj and can fall on farms in El Faro, La Florida, among others.
Similarly, the same fine particles could spread to areas such as Coatepeque and Colomba.
Source : Insivumeh.
Photo : Denis Hernandez