An atmospheric river (AR) with moderate-to-strong integrated vapor transport (IVT) exceeding 500 kg m⁻¹ s⁻¹ is forecast to make landfall over the Pacific Northwest and southern British Columbia on the evening of August 14, 2025, bringing sustained AR conditions for about 24 hours and significant precipitation through August 16.
Widespread flash flooding struck Chattanooga, Tennessee, on August 12, 2025, after 160 mm (6.4 inches) of rain fell in a single day, prompting a local state of emergency, multiple rescues, and resulting in three fatalities and one missing person.
A severe dust storm produced near-zero to zero visibility along Interstate 10 between Lordsburg and Deming, New Mexico, at about 17:30 local time (LT) on August 12, 2025, prompting a full closure of the corridor between mile markers 20 and 81, roughly 98 km (61 miles). Conditions improved in the area by 18:30 LT.
The first significant rainfall event in weeks is forecast for coastal British Columbia, Canada, with an atmospheric river expected to bring 20–40 mm (0.8–1.6 inches) to the Lower Mainland and over 50 mm (2 inches) to higher elevations from August 15 to 17, 2025. The rainfall is expected to bring some relief to the region following prolonged wildfire activity that has scorched over 7 000 000 ha (1.8 million acres) across Canada making it the country’s second-worst wildfire season on record.
Typhoon Podul made landfall near Taitung City, southeastern Taiwan, at around 13:00 LT (05:00 UTC) on August 13, 2025, bringing strong winds and heavy rains. The storm left at least one person missing, injured at least 33 others, and prompted mass evacuation and transport shutdowns.
New research published on August 6, 2025, in JAMA estimates that 440 excess deaths occurred in Los Angeles County, California, from January 5–February 1, 2025, due to the Palisades and Eaton wildfires, compared with 30 direct deaths officially reported.
At least three people have been confirmed dead in Kumamoto and Kagoshima prefectures, after record-breaking rainfall triggered deadly floods and landslides across southern Japan between August 10 and 11, 2025.
Suicide Basin above Mendenhall Glacier in Juneau, Alaska, began overtopping its ice dam at about 19:00 LT on August 10, 2025, triggering a unified emergency response and a state disaster declaration the same day ahead of an expected glacial lake outburst flood (GLOF).
Typhoon Podul is forecast to make landfall near Taitung City, southeastern Taiwan, on August 13, 2025, bringing heavy rainfall, strong winds, and coastal flooding across much of Taiwan, southern Japan, and northern Philippines over the next 48 hours. It is then expected to make a second landfall along the south-central coast of China and potentially penetrate deep inland.
At least 52 all-time high temperature records were broken across France on August 11, 2025, with more than 175 weather stations exceeding 40°C (104°F), as a persistent heat dome intensified extreme heat across southwestern Europe.
