Winnipeg hit a record daytime high of 35.2 °C (95.36 F) on May 12, 2025, shattering a 67-year-old May 12 temperature record amid Canada’s first heat wave of the year, Environment and Climate Change Canada reports.

Strong winds and dry weather are fueling rapidly spreading wildfires across Russia’s Zabaikalsky region, with over 456,000 hectares burning and firefighters racing to protect populated areas.

On Sunday afternoon, a family on the Byron Glacier Trail in Portage Valley, Alaska captured footage of a large wet springtime avalanche that sent debris down into the valley floor. No one was injured.

An algal bloom in Northern Norway dominated by Chrysochromulina and Phaeocystis has caused massive fish die-offs in recent weeks, with up to one million farmed fish reported dead around Astafjorden.

Anchorage is experiencing the highest tree pollen counts in nearly a decade, with counts reaching thousands of grains per cubic meter from birch, poplar, cottonwood, aspen, willow, and alder, triggering widespread allergy symptoms.

Since mid-March, seabirds and marine mammals that appear to have been infected with highly pathogenic avian influenza, which has a high fatality rate, have been confirmed on the eastern coastline of Hokkaido. 　Volunteers are conducting their own surveys in Nemuro City, and as of the 4th, a total of 614 dead seabirds, seals, and sea otters have been confirmed.

This event follows a series of deep earthquakes, the last comparable one occurring on April 23, and while no eruption has taken place in nearly a millennium, experts warn these movements could signal deeper volcanic processes.

A late-season blizzard dumped up to 30 cm of snow in northeastern Finland, snarling roads around Kuusamo and Salla and causing train delays between Parikkala and Joensuu due to a damaged electric rail track.

UAF graduate student Leanne Bulger may take an even deeper look into the mysterious hole in the ground that is likely one of many developing all over Alaska.

High water and erosion have washed out the North Klondike Highway at kilometre 682 near Dawson City, Yukon, forcing an indefinite closure of the route.

A historic late‐spring blizzard on May 2 blanketed Moscow with up to 15 cm of snow—the first May 2 snow cover in 75 years—toppling trees onto cars and cutting power for over 26,000 residents. The record snowfall came a day after Moscow was hit by record rainfall and an unusually mild winter. The capital city and its outer suburbs saw 71% of the precipitation usually recorded in May in just 36 hours.

Light diesel leaked from an oil company facility into Ramfjorden outside Tromsø, and police, fire crews, Kystverket and the acute pollution committee are working to contain it.

A dead moose calf in Karasjok was found with moose botfly larvae in its throat, marking a potentially first reported occurrence of this parasite in inner Finnmark, Norway, raising concerns about its impact on local wildlife.

Wildfires in B.C.'s northeast forced evacuations in parts of Fort St. John and disrupted communications in Tumbler Ridge amid warm, windy conditions that raised fire danger.

A large ice run jammed on the Kuskokwim River below Aniak on May 1, prompting flood advisories for Aniak and Kalskag, though relief channels kept water below flood levels.

Fort Albany First Nation declared a state of emergency and fully evacuated after flood warnings, marking the third remote Ontario Far North community to evacuate this spring.

The red-headed woodpecker has been observed for the past week.

Breakup on the Kuskokwim River reached Aniak on April 30, roughly five days ahead of the median date, though unusually low water levels could increase the risk of ice jams downstream.

Tobique Valley High School in Plaster Rock, N.B., has been temporarily closed and its 134 students and 22 staff relocated to nearby schools after a persistent bat infestation.

A bloom of non-toxic Noctiluca algae is lining Saanich Inlet’s shoreline; safe for swimmers and shellfish consumption so far. Scientists say the bloom is not producing toxins yet, but could as the water gets warmer. “This one is a bit early!” said Galbraith.