Earthquakes Swarm Before Kīlauea Eruption Episode 44 Begins
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Hawaii VOLCANOES NATIONAL PARK - The eruption window was set to begin today, although the summit has been on a deflationary trend since Sunday's earthquakes.
(BIVN) – Hawaiʻi island awaits the start of episode 44 lava fountaining in the ongoing Kīlauea summit eruption, but a recent swarm of earthquakes may have delayed the event.
The USGS Hawaiian Volcano Observatory reported on Sunday that the forecast window for episode 44 is April 6th to April 14th. That day, scientists noted a brief change to deflation at around 6 a.m. HST during a swarm of small earthquakes below Kīlauea summit between 1:50 a.m. to 7 a.m. HST.
At the time, the Observatory wrote:
Seismic tremor is continuous with frequent small, poorly-defined bursts possibly related to rise and fall of magma in the vents. Seventy-four small-magnitude earthquakes were recorded at the summit during the past day. Most were smaller than magnitude-2 and occurred between 1:50-7 a.m. this morning, at depths of 3.7-5 miles (6-8 km) below sea level. This activity does not appear to have had an effect on the episode 44 precursory activity, and HVO will continue to closely monitor it.
Since that time, deflation has continued. The Observatory is expected to issue another update today, providing their interpretation on how the deformation trend might impact the forecast window.
Lava flows were observed at the summit early Monday morning.
The USGS also issued a separate information statement on a stronger earthquake that occurred far from the summit area. At 11:41 a.m. HST on Sunday, a magnitude-3.9 earthquake occurred 2 miles east-northeast of Pāhala, at a depth of 2 miles below sea level. The earthquake had no apparent impact on either Mauna Loa or Kīlauea volcanoes.
“This earthquake is likely related to the seismic swarm under the Pāhala area, which has been going on since 2019,” the Observatory stated. “Earthquakes in this region have been observed at least as far back as the 1960s.”
The earthquake was not strong enough to cause damage or generate a tsunami threat.
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Volcanoes Today - summary of volcanic activity world-wide
Volcanoes Today - summary of volcanic activity world-wide
Shiveluch (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 30000 ft (9100 m) altitude or flight level 300 and is moving at 30 kts in N direction.
The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY. to 30000 ft (9100 m)
Canlaon (Central Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260406/1039Z VA CLD UNKNOWN REPORTED OBS VA DTG:06/1040Z
Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260406/0938Z FL090 EXTD SW REPORTED OBS VA DTG:06/0940Z
Ibu (Halmahera, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .
The full report is as follows: VA TO FL070 OBS AT 05/2230Z, MOV S EST VA DTG:06/0720Z to 7000 ft (2100 m)
Lewotolo (Lesser Sunda Islands): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 .
The full report is as follows: VA TO FL060 MOV NORTHWEST EST VA DTG:06/0853Z to 6000 ft (1800 m)
Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 05 kts in SW direction.
The full report is as follows: VA TO FL150 REP FM GND AT 06/0951Z EST VA DTG:06/1340Z to 15000 ft (4600 m)
Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 05 kts in S direction.
The full report is as follows: VA TO FL100 EXT SOUTH OBS VA DTG:06/1330Z to 10000 ft (3000 m)
Popocatépetl (Central Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EMS
Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .
The full report is as follows: FREQUENT VA EMS to 16000 ft (4900 m)
Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 23000 ft (7000 m) altitude or flight level 230 .
The full report is as follows: ONGOING VA EMS to 23000 ft (7000 m)
Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: OCNL VA EMS to 15000 ft (4600 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: UNABLE TO DETECT