December 28 , 2024.
Hawaii , Kilauea :
Friday, December 27, 2024, 9:22 AM HST (Friday, December 27, 2024, 19:22 UTC)
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:
The eruption at Kīlauea volcano that began on Monday, December 23, continues at a very low level this morning. Following a pause in lava fountaining on Wednesday, December 25, very weak effusion of lava began yesterday, December 26, around 8 a.m., producing very small flows near the vent. Eruptive activity has been confined to Halemaʻumaʻu and the downdropped block within the caldera. No unusual activity has been noted along Kīlauea’s East Rift Zone or Southwest Rift Zone.
Summit Instrumental Observations:
Seismicity at the summit over the last 24 hours has been low with just 2 small earthquakes. Seismic tremor remains low due to the lack of significant lava fountaining. Summit tiltmeters have recorded gradual inflationary tilt over the past day. SO2 emissions remain elevated, with a gas plume rising above the caldera this morning, but outgassing vigor is greatly reduced compared to the periods of lava fountaining in previous days.
This oblique aerial photo was captured during a USGS Hawaiian Volcano Observatory overflight on the morning of Friday, December 27, 2024, providing a northeast-looking overview of the ongoing Kīlauea summit eruption within Halema‘uma‘u crater. At the time, eruptive activity was limited to low-level effusion from a couple vents on the southwest side of the crater floor, as evidenced by the silvery patch of lava near the lower-left corner of the image frame. The darker lava flows on the crater floor were emplaced during the first day of the eruption, December 23, 2024.
Summit Eruption Observations:
Webcam images indicate that the eruption within Kaluapele (the summit caldera) resumed gradually yesterday morning around 8 a.m. from vents on the southwest side of Halemaʻumaʻu crater. Very weak effusion of lava over the past day has produced small flows that remain close to the vent in the southwest portion of the crater. HVO geologists in the field this morning report sluggish oozing of lava from the active vent and no significant spattering. They also report numerous rockfalls from the crater walls.
Source : HO.
Photo : USGS / M. Zoeller.
Indonesia , Lewotobi Laki-laki :
An eruption of Lewotobi Laki-laki occurred on Saturday, 28 December 2024 at 05:47 UTC (13:47 local time) with the height of the ash column observed at ±2000 m above the summit (±3584 m above sea level). The ash column was observed to be grey with thick intensity, oriented towards the north and northeast. At the time of writing, the eruption was still ongoing.
VOLCANO OBSERVATORY NOTICE FOR AVIATION – VONA
Issued : December 28 , 2024
Volcano : Lewotobi Laki-laki (264180)
Current Aviation Colour Code : ORANGE
Previous Aviation Colour Code : orange
Source : Lewotobi Laki-laki Volcano Observatory
Notice Number : 2024LWK818
Volcano Location : S 08 deg 32 min 20 sec E 122 deg 46 min 06 sec
Area : East Nusa Tenggara, Indonesia
Summit Elevation : 5069 FT (1584 M)
Volcanic Activity Summary :
Eruption with volcanic ash cloud at 05h47 UTC (13h47 local).
Volcanic Cloud Height :
Best estimate of ash-cloud top is around 9869 FT (3084 M) above sea level or 4800 FT (1500 M) above summit. May be higher than what can be observed clearly. Source of height data: ground observer.
Other Volcanic Cloud Information :
Ash cloud moving from north to northeast. Volcanic ash is observed to be gray. The intensity of volcanic ash is observed to be thick.
Remarks :
Eruption recorded on seismogram with maximum amplitude 7.4 mm and maximum duration 883 second.
Source et photo : Magma Indonésie .
Italy , Stromboli :
Statement on Stromboli activity, 27 December 2024, 19:19 (18:19 UTC)
The National Institute of Geophysics and Volcanology, Osservatorio Etneo, reports that surveillance camera images show that the lava overflow fed by the North Crater area reported in the previous statement has stopped and is cooling. Ordinary explosive activity and modest spattering activity in the North Crater area persist, with varying intensity.
Volcanic tremor, after peaking yesterday at 18:40 UTC, has returned to the average range, still showing large fluctuations. No significant changes have been reported in the occurrence rate of explosion earthquakes. Deformation data from the GPS network (HF) show no significant changes. Inclinometer data are currently unavailable.
Further updates will be provided shortly.
Source : INGV
Photo : Stromboli stati d’animo / Sebastiano Cannavo
Indonesia , Merapi :
MOUNT MERAPI ACTIVITY REPORT, December 20 to December 26, 2024, published on December 27, 2024
OBSERVATION RESULT
Visual
The weather around Mount Merapi is generally clear in the morning and night, while it is foggy from noon to evening. White smoke, thin to thick, low to moderate pressure and 150 m high was observed from the Badaban Mount Merapi observation post on December 2, 2024 at 17:41 WIB.
This week, lava avalanches were observed 99 times in the Southwest (upstream of Bebeng River) up to a maximum of 1,800 m, 24 times upstream of Krasak River up to a maximum of 1,800 m, and 6 times upstream of Sat/Putih River up to a maximum of 1,500 m. Changes were observed in the morphology of the Southwest dome due to dome growth activity, lava avalanches, and hot cloud avalanches. For the morphology of the middle dome, there is no significant morphological change. Based on the morphological analysis of the Babadan2 camera, the volume of the Southwest dome has experienced a measurable growth of 3,342,300 m3. As for the central dome, it is 2,361,800 m3.
Seismicity
This week, the seismicity of Mount Merapi recorded
126 shallow volcanic earthquakes (VTB),
587 multi-phase earthquakes (MP),
1293 avalanche earthquakes (RF),
15 tectonic earthquakes (TT).
The intensity of earthquakes this week is still quite high.
Deformation
The deformation of Mount Merapi monitored by EDM this week shows an average shortening rate of 0.2 cm/day, higher than last week.
Rainfall and Lahars
This week, there was rain at Mount Merapi observation post with a rainfall intensity of 127 mm/hour for 50 minutes at Kaliurang post on 23 December 2024 and additional discharge was reported in the Boyong River.
Conclusion
Based on the results of visual and instrumental observations, it was concluded that:
The volcanic activity of Mount Merapi is still quite high in the form of effusive eruptive activity. The activity status is set at the « SIAGA » level.
Source : BPPTKG
Photo : hvic_32/FB
La Martinique Island , Mount Pelée :
Weekly report, Institut de physique du globe de Paris / Observatoire volcanologique et sismologique de Martinique. Saint-Pierre, December 27, 2024 at 3:30 p.m. local time (GMT-4)
Volcanic activity is stable this week with 10 earthquakes of volcanic origin observed.
Between December 20, 2024 at 4:00 p.m. (UT) and December 27, 2024 at 4:00 p.m. (UT), the OVSM recorded 10 low-energy volcano-tectonic earthquakes. These earthquakes were clearly identified as coming from one of the well-known seismically active zones at Mount Pelée, located between 1.0 and 1.4 km deep below the summit of the volcano. The superficial seismicity of the volcano-tectonic type is associated with micro-fracturing in the volcanic edifice in connection with the global reactivation of the volcano observed since the end of 2018.
No earthquake was felt by the population.
The previous week, the OVSM had recorded 11 earthquakes of volcanic origin. As of December 27, 2024 and over the past 4 weeks, the OVSM has therefore observed a total of 43 volcanic earthquakes, an average of 10 to 11 earthquakes per week.
During the volcanic reactivation phases of volcanoes similar to Mount Pelée, it is common to observe seismic activity that varies in intensity and frequency.
For more details on observations and interpretations of volcanic activity over the longer term, refer to the OVSM monthly bulletins.
The alert level is currently YELLOW: vigilance.
Source : Direction de l’OVSM-IPGP.
Photo : Photopoesie
