A very strong and shallow earthquake registered by the USGS as M7.3 hit Flores Sea at 03:20 UTC on December 14, 2021. The agency is reporting a depth of 18 km (11 miles). EMSC is reporting M7.3 at a depth of 12 km (7 miles). The epicenter was located about 113 km…
Tropical Storm "Rai" formed on December 13, 2021 east of the Philippines as the 22nd named storm of the 2021 Pacific typhoon season. The system is expected to continue intensifying over the next 3 days before it makes landfall over Caraga or Eastern…
A prolonged Atmospheric River will produce heavy snow across much of the U.S. West through Wednesday, December 15, 2021. Snowfall of 60 – 150 cm (2 – 5 feet) or more is likely in the Sierra Nevada, with 30 – 90 cm (1 – 3 feet) expected across much of the western…
A strong and shallow earthquake registered by the USGS as M6.5 hit west of Macquarie Island, southwestern Pacific Ocean, about halfway between New Zealand and Antarctica, at 08:58 UTC on December 12, 2021. The agency is reporting a depth of 10 km (6.2 miles). EMSC…
Exceptional early-December snowfall was reported across the Alps this week, with parts of eastern Austria receiving the heaviest snowfall in 9 years. In Burgenland, up to 30 cm (11.8 inches) of snow fell overnight on Wednesday, and power outages are impacting…
Due to the possibility of escalating volcanic events associated with a swarm of earthquakes in the vicinity of Davidof volcano in Alaska, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code and the Volcano Alert Level for Davidof volcano to…
A violent tornado outbreak took place across the U.S. South and Midwest on Friday, December 10 into Saturday, December 11, 2021, placing more than 16 million people under a tornado watch. In 24 hours to 11:10 UTC on December 11, the NWS Storm Prediction Center…
A major winter storm will expand across the Central Plains, Upper Midwest, and Great Lakes on Friday, December 10, and Saturday, December 11, 2021. Snowfall rates of 50 mm (2 inches) per hour are possible, producing near whiteout conditions and dangerous…
Heavy rain associated with the front derived from the extratropical cyclone forming off the coast of southern Brazil this week caused severe floods in parts of southern Bahia, leaving 3 people dead. The cyclone emerged from an area of low pressure of 1 010 hPa…
A slow-slip event began under the Kāpiti-Horowhenua area, New Zealand in mid-September 2021, and is expected to continue for several more months. The part of the subducting Pacific Plate 30 – 50 km (18 – 31 miles) beneath Kāpiti has started moving slowly again…
