Magnitude 5+ Earthquakes – Global

5.7 earthquake hits the Rat Islands in the Aleutian Islands.

5.3 earthquake hits the Solomon Islands.

5.1 earthquake hits eastern Honshu, Japan.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

In the northwest Pacific Ocean: Tropical storm 27w (Nyatoh), located approximately 560 nm west-northwest of Navsta, Guam, is tracking northward at 09 knots.

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Colombia – Raging flash floods swept through parts of the city of Medellín, capital of Antioquia Department in northwest Colombia, late on 30 November 2021. After some initial damage assessments on 01 December, the city administration reported 4 houses were completely destroyed and a further 70 damaged in the floods. Around 300 people were affected. Further damage assessments were ongoing.

Thailand – Flooding in southern Thailand has affected over 100,000 people across 8 provinces since late November according to disaster management authorities. Atotal of 21,109 households (an estimated 105,545 people) have been impacted. No fatalities have been reported.

Global Warming

Climate Change is Killing Seabirds

The warming of the planet is taking a deadly toll on seabirds that are suffering population declines from starvation, inability to reproduce, heat waves and extreme weather.

Climate-related losses have hit albatrosses off the Hawaiian islands, northern gannets near the British Isles and puffins off the Maine coast. Some birds are less able to build nests and raise young as sea levels rise, while others are unable to find fish to eat as the ocean heats up, researchers have found.

Common murres and Cassin’s auklets that live off the West Coast have also died in large numbers from conditions scientists directly tied to global warming.

With less food, rising seas that encroach on islands where birds roost and increasingly frequent hurricanes that wipe away nests, many seabirds have been producing fewer chicks, researchers say.

And tern species that live off New England have died during increasing rain and hailstorms scientists link to climate change. Some species, including endangered roseate terns, also can’t fledge chicks because more frequent severe weather kills their young.

It’s difficult to precisely determine the population loss to wide-ranging seabirds and how much is attributable to climate change. But one estimate by researchers from University of British Columbia stated that seabird populations have fallen 70% since the mid-20th century.

Reproductive success also decreased over the last half century for fish-eating seabirds, especially those that live north of the equator, according to a study earlier this year in the journal Science.


Roundup of Global Volcanic Activity – New Activity for the week 24 November – 30 November 2021

Iliwerung – Lomblen Island (Indonesia) : A submarine eruption at Iliwerung was observed during 28-29 November, prompting PVMBG to raise the Alert Level to 2 (on a scale of 0-4). Residents reported seeing the sea surface, 30 m from the shore to the S, bubbling up to heights of less than 1 m beginning at 2152 on 28 November; the activity lasted about an hour. Eruptive activity at the sea surface was again observed at 0517 on 29 November. An observer described bubbling water and a plume rising about 100 m a few hours later, at 0829, though they noted that the activity was about 1 km S of the Hobal submarine vent (about 3 km E of the summit), the site of multiple eruptions since 1973. PVMBG warned residents to stay away from the coastline and the water nearest to the activity.

Karymsky – Eastern Kamchatka (Russia) : KVERT reported that during 18-20 and 25 November explosions at Karymsky generated ash plumes that rose as high as 6.5 km (21,300 ft) a.s.l. and drifted 370 km NE and NW. A thermal anomaly was visible in satellite images during 18-19 and 22 November.

Pinatubo – Luzon (Philippines) : PHIVOLCS reported that a weak phreatic explosion at Pinatubo was recorded during 1209-1213 on 30 November. The event was likely drive by shallow hydrothermal processes based on very low seismicity recorded during the previous few days, low diffuse carbon dioxide flux from the lake, and a notable infrasound signal. A plume mostly comprised of steam was seen rising above weather clouds within a few minutes of the end of the event. The Tokyo VAAC stated that the plume rose to 13.4 km (44,000 ft) a.s.l. and drifted W based on satellite data.