A strong and shallow earthquake registered by India’s National Center for Seismology as M6.2 hit Nepal at 09:21 UTC (15:06 local time) on October 3, 2023. The agency is reporting a depth of 5 km (3.1 miles). USGS and EMSC are reporting M5.7 at a depth of 10 km (6.2 miles). The quake was preceded by M4.6 and followed by M3.6, M3.1, M3.5, M4.3, M3.9 and M3.0 by 14:00 UTC.
An ash cloud from Shishaldin Volcano reaching 12 km (40 000 feet) above sea level was observed in satellite data at 13:50 UTC on October 3, 2023.
A strong earthquake registered by the JMA as M6.3 hit Izu Islands, Japan at 11:38 UTC on October 3, 2023. The agency is reporting a depth of 40 km (25 miles). The USGS is reporting M6.1 at a depth of 11.9 km (7.4 miles); EMSC M6.1 at a depth of 10 km (6.2 miles).
Major flooding occurred in Dominica and Guadeloupe on October 2 and 3, 2023, as Tropical Storm Philippe’s tail brought torrential rains to the northern Leeward Islands.
Japan experienced its warmest September on record in 2023, with a national monthly temperature that was 2.66 °C (4.79 °F) higher than the standard. The record-breaking temperatures were particularly pronounced in the eastern and western regions of the country.
PHIVOLCS maintains Alert Level 3 over the Mayon volcano, which means that it is currently in a relatively high level of unrest, and hazardous eruption within weeks or even days could still be possible.
Record-breaking rainfall submerged streets and disrupted travel across the New York City metropolitan area on September 29, 2023. The deluge set new daily records and made this month the wettest September in New York City’s recorded history.
New activity/unrest was reported for 2 volcanoes from September 20 to 26, 2023. During the same period, ongoing activity was reported for 21 volcanoes.
A strong earthquake registered by the USGS as M6.1 hit Vanuatu at 14:40 UTC on September 28, 2023. The agency is reporting a depth of 127.5 km (79 miles). EMSC is reporting M6.0 at a depth of 126 km (78 miles).
On September 27, 2023, a powerful weather system named Storm Elias brought a second wave of severe flooding to central Greece, particularly affecting the city of Volos and the island of Evia. The storm came on the heels of the devastating Storm Daniel earlier this month.