Earthquakes
Based on the Taal Volcano Network (TVN), 212 quakes, including 168 tremors with durations one to 20 minutes, and 44 low frequency volcanic earthquakes were recorded.
Some 1, 229 tons of sulfur dioxide were emitted by the volcano in Batangas province in the past 24 hours, according to Phivolcs chief Renato Solidum.
Solidum said with the volcano under Alert Level 2, an increased unrest may lead to an eruption and advised "all concerned to remain vigilant".
"The fact that we have volcanic tremors and prolonged background tremor recorded, higher than normal sulfur dioxide emission rate of 923 tons per day, slow but steady inflation of the volcano still indicates magmatic activity at shallow depth beneath the volcano," he said.
The tremor occurred on Tuesday at 9:14 p.m. local time (0:14 GMT) about 100 kilometers (62 miles) away from Aksu county. The epicenter of the earthquake lay at a depth of 10 kilometers.
Seismologists recorded 10 repeated aftershocks, the strongest of them had a magnitude of 3.4.
As of Wednesday, three deaths have been registered as a result of the tremor. A total of 65 houses were also reported damaged or destroyed by the earthquake, 16 of which collapsed along with the roof.
According to preliminary data, the quake was located at a shallow depth of 10 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
In Miyagi Prefecture, where at least one person was injured, the quake measured up to a strong 5 on the Japanese seismic intensity scale to 7.
Tsunami waves of up to 1 meter may have reached the Miyagi Prefecture coast shortly after 6:30 p.m., according to NHK. All tsunami warnings were lifted by 7:30 p.m.
Due to the tsunami advisory, the town of Watari in the prefecture issued an evacuation order covering 2,527 homes and 6,911 residents.
Two hundred homes in Kurihara, Miyagi Prefecture were without power, NHK said. The quake caused the Tohoku Shinkansen to suspend services. Services were expected to resume around 10 p.m.
Local time at epicenter: Wednesday, 17 Mar 2021 5:38 am (GMT +11)
Magnitude: 6.6
Depth: 22.1 km
Epicenter latitude / longitude: 54.7018°N / 163.2077°E (North Pacific Ocean, Russia)
Nearest volcano: Vysoky (158 km / 98 mi)
It was followed 20 seconds later by another quake of magnitude 4.0, prolonging the vibration of people's houses and increasing the sensation of being rocked by a boat. Earlier in the day, at 12:34 pm, an earthquake of magnitude 4.6 had already hit the area.
The M5.4 quake was the second largest since the swarm of earthquakes began with one of magnitude 5.7 on February 24.
Scientist are closely monitoring the area for the possibility of a volcanic eruption.
A recording from the security camera of the rescue team Þorbjörn's building in the town of Grindavík, on the Reykjanes peninsula, clearly shows how the quake shook vehicles, stored inside the building, located less than 5 km from the source. The video was posted by the rescue team on Facebook.

Taal Volcano stays on alert level two on Monday after the Philippine Institute of Volcanology and Seismology recorded 252 volcanic earthquakes in the last 24 hours.
Under alert level 2, the volcano is seen to be under "increased unrest" as activities within the crater "indicate increased magmatic activity at shallow depths beneath the edifice," Phivolcs said in its 8 a.m. advisory.
"Sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas can occur and threaten areas within the Taal Volcano Island," it said.
Last month, Phivolcs warned of Taal's possible eruption over a year since it last spewed ash and hot rocks, covering parts of Batangas, Cavite, and Laguna with mud and grime.
Local time at epicenter: Sunday, 14 Mar 2021 10:05 am (GMT -2)
Magnitude: 6
Depth: 10.0 km
Epicenter latitude / longitude: 59.7°S / 29.7°W (South Atlantic Ocean, South Georgia & South Sandwich Islands)
Nearest volcano: Thule Islands (134 km / 83 mi)
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