Although more than 2 400 km (1 500 miles) away, the M7.6 earthquake in Mexico on September 19, 2022, triggered 1.2 m (4 feet) tall waves in Death Valley’s Devils Hole. A colloquial term for the event is a ‘desert tsunami.’
Seismic activity beneath the Mauna Loa volcano has been gradually increasing over the past 2 months. In addition, a small seismic swarm started on September 23, with most earthquakes in a cluster about 5 km (3.1 miles) wide and -2 to 1 km (-1.2 to 0.6 miles) below the surface. The Aviation Color Code is at Yellow and the Volcano Alert Level at Advisory.
Remnants of Typhoon “Merbok” will bring potentially historical coastal flooding, high surf, coastal erosion, high winds, high seas and heavy rain to western Alaska and the Bering Sea through the weekend, the National Weather Service (NWS) warns.
The remnants of Typhoon “Merbok” are working through the Bering Sea, bringing the potential for historic coastal flooding and storm surges as the system works through the region this weekend.
A seismic swarm started under Trident stratovolcano, Alaska on August 24, 2022, likely driven by the movement of magma or magmatic fluids. The swarm is still in progress but now at a decreased rate. The last eruption of this volcano took place in 1974 (VEI 3).
The remnants of Tropical Storm “Kay” brought more flash flooding to parts of Southern California on September 12 and 13, 2022, with mud and debris flows sweeping through three San Bernardino County communities.
Tropical Storm “Kay” delivered nearly a year’s worth of rain across Southern California last week, shattering daily rainfall records.
Tropical Storm “Kay” is moving parallel to the western coast of the Baja California peninsula, bringing heavy rains and flooding to Mexico. The moisture produced by the storm may also produce heavy rain and the potential for considerable flash flooding in the Southwest U.S., especially in the Peninsular ranges.
The earthquake swarm under Ta’u Island volcano that started in July 2022 continues with declining frequency. However, the current trend of decreasing numbers of earthquakes does not mean the earthquake swarm will end.
The earthquake swarm that started under Ta’u volcano, American Samoa, at the end of July 2022 continues with no significant change.
