Severe storms and torrential rainfall struck parts of Italy, Slovenia and Croatia on September 9 and 10, 2026, causing flooding, evacuations, transport disruption and localized infrastructure damage. Two women died in Italy during the event, one after becoming trapped in a flooded underpass at Latisana and another after being struck by broken window glass at Sinalunga.
Nagoya recorded 104.5 mm (4.1 inches) of rain in one hour on September 8, 2026, setting an all-time station record as flooding disrupted roads and rail services. Nagoya City issued Level 5 Emergency Safety Measures for communities along the Kanare, Yada and Ueda rivers, while the Japan Meteorological Agency and the Ministry of Land, Infrastructure, Transport and Tourism issued a Level 5 flood special warning for the Shonai River system at 18:20 LT (09:20 UTC). The municipal Level 5 measures were downgraded at 22:25 LT (13:25 UTC), while local media reported four injuries across Aichi Prefecture.
Widespread thunderstorms and locally heavy rainfall are forecast across northern Italy, Slovenia and Croatia on September 9, 2026, with intense rainfall posing a risk of rapid rises in torrential watercourses and localized flash flooding. A marked temperature drop is also forecast behind the system, bringing substantially cooler conditions to northern Italy and parts of the Alpine and northern Adriatic region after the recent late-summer heat.
Record rainfall associated with Typhoon No. 24 and an autumn-rain front affected Yakushima Town, Kagoshima Prefecture, from September 4 to September 5, 2026, with 24-hour rainfall at Onoaida reaching 490.5 mm (19.31 inches) by 05:30 JST. The Japan Meteorological Agency issued a Level 5 Landslide Disaster Special Warning at 05:10 before replacing it with a Level 4 warning at 11:30, while authorities reported landslides, water outages affecting as many as 289 households, and large amounts of driftwood at Miyanoura Port.
Severe thunderstorms damaged trees and power infrastructure from Michigan to Pennsylvania on September 2 and 3, 2026 while a gust of 103 km/h (64 mph) was recorded at Ronald Reagan Washington National Airport late September 3. DTE Energy reported 145 000 customers restored by early September 4, while the Storm Prediction Center maintained a Slight Risk from the southern Great Lakes into the Mid-Atlantic, with damaging wind gusts the primary hazard
At least two people died, and at least 12 were injured in separate incidents during severe weather across Germany on August 19–20, 2026. By August 21, the German Weather Service (DWD) confirmed three damaging tornadoes in Fürstenwalde/Spree, the greater Wetzlar area, and Höhr-Grenzhausen, while recovery operations continued across several states.
A confirmed tornado moved through Dover, Delaware, on August 20, 2026, prompting a Particularly Dangerous Situation warning and a city State of Emergency. The tornado damaged buildings, downed trees, flooded roads and disrupted power in Dover, while severe storms in Pennsylvania injured 1 person, displaced at least 13 residents and damaged Eastern York High School and buildings in Columbia.
Heavy rain triggered two geological disasters in Sichuan Province, China, between August 18 and 19, 2026, disrupting National Highway G350 and prompting the pre-emptive evacuation of 21 784 people from risk areas across 64 counties. In a separate rain-related structural accident in Changning County on August 18, a rooftop parapet wall collapsed during a university-admission banquet, killing 5 people and injuring 17.
At least six people have died after severe storms and flooding spread across Indiana beginning August 11, 2026, while major White River flooding forced evacuations and rescues across several counties. The National Weather Service said widespread flooding was affecting the White River late August 15, with major flooding at Noblesville and Nora and extensive flooding around Ravenswood near and north of Indianapolis. NWS described the flooding in parts of central Indiana as catastrophic.
Ohio Governor Mike DeWine declared a state of emergency in Perry and Muskingum counties on August 11, 2026, after severe flooding left one person dead and affected communities including Roseville, Crooksville and New Lexington. Radar and rain gauges indicated 127–203 mm (5–8 inches) of rain in parts of southeastern Ohio, where numerous structures, vehicles, and roads were flooded. Forty Ohio Army National Guard members were deployed to assist local responders.
