Flash floods claim one life in Benson, Ariznona
Flash flood struck Benson, Arizona claiming one life and prompting two rescues, overnight Friday into Saturday, September 12 to 13, 2025.

Flash flood struck Benson, Arizona claiming one life and prompting two rescues, overnight Friday into Saturday, September 12 to 13, 2025.

A long-track tornado was confirmed northeast of Montezuma Creek in San Juan County, Utah, between 12:30 and 13:05 MDT on September 13, 2025, about 10–13 km (6–8 miles) northeast of Montezuma Creek and 35 km (22 miles) southeast of Blanding. The National Weather Service issued a tornado warning for southeastern Utah and western Colorado.

New activity/unrest was reported for 5 volcanoes from September 3 to 9, 2025. During the same period, ongoing activity was reported for 21 volcanoes.

At least 1 person died while another was injured as record rainfall triggered severe flooding across Tokyo and the Kanto region, Japan on September 11, 2025. Evacuation orders were issued as the over 6 000 homes had their power knocked by the storm, as transport disruptions affected over 100 000 people.

A strong M7.4 earthquake struck near the east coast of Russia’s Kamchatka Peninsula at 02:37 UTC on September 13, 2025. The quake is aftermath of powerful, tsunami-producing M8.8 quake on July 29.

Tropical Storm Mario formed at 15:00 UTC on September 12, 2025, just off the coast of Mexico, prompting the government of Mexico to issue a Tropical Storm Watch from Lazaro Cardenas to Punta San Telmo. At the time of formation, the center of Mario was located 65 km (40 miles) SSW of Zihuatanejo and 95 km (60 miles) SSE of Lazaro Cardenas, Mexico.

A landslide struck Upper Rimbi in Sikkim on September 12, 2025, killing at least four people. Three victims from the same family died when their home was buried, while a seven-year-old girl from the family was rescued and reported safe.

A La Niña Watch was issued by NOAA’s Climate Prediction Center on September 11, 2025, with a 71% probability of La Niña forming in October–December 2025. Chances decline to 54% for December 2025–February 2026.

Weak to moderate lahars descended from Fuego volcano, Guatemala, at 19:17 LT on September 10, 2025, moving through Barranca Ceniza and into the Zarco and Mazate rivers, tributaries of the Achíguate River. The National Institute of Seismology, Volcanology, Meteorology and Hydrology (INSIVUMEH) reported that conditions remain favorable for additional lahars on the southwestern flanks.

Multiple tornadoes touched down in New South Wales on September 10, 2025, one of which destroyed the shed of a farm in Caragabal, and ripped the roof off a nearby house.