A severe rainstorm dropped almost two months’ worth of rain in just seven hours over Odesa, Ukraine, triggering deadly flash floods across the city on September 30, 2025, causing at least nine fatalities.
Dangerous coastal flooding from hurricanes Humberto and Imelda collapsed six oceanfront homes in Buxton, North Carolina, on September 30, 2025, with debris forcing beach closures and travel restrictions on NC12. Authorities warn of additional collapses as long-period swells continue.
Bermuda is bracing for hurricane conditions and continued severe weather as Hurricane Imelda makes its way towards the island on October 1, 2025. Imelda and Humberto have claimed at least three lives so far as they continue to produce deadly rip currents and severe weather to Bermuda, the Bahamas, and much of the U.S. East Coast.
Hurricane Imelda formed over the Atlantic on September 30, 2025, after 2 fatalities were confirmed in Cuba due to heavy rain and flooding in the Santiago de Cuba and Guantánamo. Imelda is now the fourth hurricane of the season, following Hurricane Humberto which continues to send dangerous rip currents to the U.S. East Coast.
Successive atmospheric rivers are forecast to affect the U.S. West Coast through October 2, 2025. The first system that impacted Washington, Oregon, and Northern California on September 29 was forecast to dissipate by late evening, while a second, stronger event associated with a cyclone near British Columbia is expected to make landfall today. Forecasts call for 25–75 mm (1–3 inches) of rain in coastal ranges and up to 200 mm (8 inches) on the Olympic Peninsula.
Remnants of Hurricane Gabrielle brought extreme rain to eastern Spain on September 19 and 30, 2025, prompting red weather warnings, the suspension of classes for more than 536 000 students, road and rail disruption, and multiple emergency rescues.
One person was confirmed dead in Volusia County, Florida due to rip currents generated by Tropical Storm Imelda, and Hurricane Humberto in the Atlantic. Humberto is forecast to continue producing rip currents across the entire East Coast as Imelda intensifies.
Tropical Storm Imelda formed over the Atlantic on September 28, 2025, as Hurricane Humberto peaked at Category 5, and dropped back to Category 4. While neither of the storms is expected to make landfall over the contiguous United States, they could produce hazardous conditions for the southeastern states including Florida, South Carolina, and much of the East Coast this week.
Tornadoes triggered by Typhoon Bualoi struck Kim Son District in Ninh Binh Province, Vietnam on September 29, 2025, killing at least 9 people and flattening homes. Bualoi made landfall earlier the same day in northern Vietnam, leaving at least 11 people dead, 17 missing, forcing the evacuation of more than 28 500 residents, and damaging nearly 1 400 ha (3 460 acres) of crops.
A series of atmospheric rivers (AR) is forecast to hit the U.S. West Coast from late September through early October, beginning with a strong AR that made landfall over British Columbia on September 26, 2025. Forecasts show moderate AR conditions in Washington, Oregon, and northern California on September 28, followed by a stronger system making landfall on September 30 and potentially continuing into October 7.
