Mowi Canada East reports 166,262 farmed salmon died at two sites near Chaleur Bay on Newfoundland’s south coast, blaming repeated sea lice infestations intensified by warm surface waters, low freshwater runoff, and calm winds. The incident follows earlier 2025 mass mortalities linked to a thermocline inversion and warm, low-oxygen conditions.

An out‑of‑control wildfire near Lake George in Kings County, Nova Scotia, surged from 2 to an estimated 300 hectares, prompting expanded evacuation orders around Lake George and Aylesford Lake. Strong winds drove rapid growth as crews deployed aircraft, helicopters, heavy equipment, and structure-protection sprinklers.

Smoke from Central Washington wildfires pushed into Spokane on Thursday, raising air quality to unhealthy for sensitive groups and likely lingering into Friday. Forecasters cited the Labor Mountain and Lower Sugarloaf fires and gusty winds as primary drivers, with conditions expected to ease slightly Friday.

Residents across Finnmark reported a bright, fast-moving light in the sky on Saturday evening, with sightings from Alta, Lakselv, Tana and other places. The nature of the object remains unclear.

A temperature of 29.8 °C was recorded at Egilsstaðir Airport on August 16, 2025, marking the highest August temperature measured in Iceland this century.

Residents of Paradise, Newfoundland and Labrador, were allowed to return home on August 15 after an evacuation order due to the Paddy’s Pond wildfire was lifted, even as the fire continued to burn and other wildfires raged across Atlantic Canada.

The plume is expected to persist in the region for at least 18 hours, according to an advisory issued Tuesday morning. 

An eruption of ash from the Klyuchevskoy volcano prompted a red aviation alert and suspended flights between Kamchatka and Chukotka on August 11, 2025.

Smoke from Canadian wildfires is expected to drift over Finland by Saturday evening, brightening sunsets but not affecting air quality, according to the Finnish Meteorological Institute.

The Wesley Ridge wildfire near Qualicum Beach on Vancouver Island has expanded to nearly 590 hectares, and smoke is expected to linger across the region through the summer.

Amateur storm chaser Brian Penner captured video of debris spinning as a funnel cloud crossed the road near Dugald and Anola during a violent thunderstorm in southern Manitoba.

Wildfire smoke drifting east from Saskatchewan and Manitoba prompted air quality advisories across much of the Kivalliq Region but is expected to clear by Thursday.

The snow patch at Gunnlaugsskarð in Esja melted out by early August 2025, marking one of the earliest disappearances on record, previously only in July of 1941 and 2010.

Environment Canada has issued an air quality advisory for Iqaluit, Kinngait and Kimmirut due to smoke from wildfires in the Prairies, reducing visibility; the smoke is expected to clear Wednesday night.

Pyrocumulus clouds formed near Snow Lake, Manitoba, creating thunderstorm-like conditions that posed significant risks to firefighting efforts against nearby wildfires.

On Varanger Peninsula, record low rodent numbers this summer forced predators like crows, gulls, foxes, and jaegers to raid nearly every ground nest, with only 6 of 94 nests surviving, and models predict a further 30% drop in willow ptarmigan in Finnmark.

Russia’s Krasheninnikov volcano on Kamchatka erupted on August 3, 2025 for the first time in six centuries, following major seismic activity, sending ash up to six kilometers into the sky.

Warnings for thunderstorms and heavy rain have been issued across many areas of Finland as temperatures above 30 °C persist, with potential for hail, strong gusts and local flooding.

Dense wildfire smoke has prompted air quality advisories across several Northwest Territories communities, leading to health warnings and the opening of clean-air shelters in Yellowknife and Fort Providence.

A 99-hectare wildfire 32 km from the village of Anyuysk in Bilibino District is being fought by 20 airborne firefighters, with nine more specialists en route by Mi-8 helicopter.