Winter Arrives Early: Japan’s First Snowcap of the Season Recorded on Hokkaido’s Mount Asahi

On October 2, the first snowcap of the season in Japan was recorded on Mount Asahi in Hokkaido's Daisetsuzan volcanic mountain range. Driven by a surge of unseasonably strong cold air typically seen in late October, the area around the summit was transformed into a silvery white landscape, sparking widespread surprise and a sense of winter’s arrival across social media.

According to the Japan Meteorological Agency (JMA), this season marks a change in reporting procedures: the traditional practice of visual human observation from meteorological observatories has been phased out, and the official announcement of the first snowcap is now determined using advanced analyzed snow depth data. Alongside Mount Asahi, early snowfall and snowcaps were also observed on nearby Mount Kurodake and neighboring peaks. Residents across Hokkaido took to social media with comments like "No wonder it felt so freezing today!" and "Winter is finally knocking at the door."

The news also resonated with people on the main island of Honshu, prompting reactions such as "The seasons are moving so fast" and "I'd better enjoy autumn while it lasts." This early snowy bulletin from the northern island served as a brisk reminder nationwide that colder months are just around the corner.

The Context

In Japan, the phenomenon known as hatsukansetsu (the first snowcap of the season) refers to the first time a mountain summit is seen covered with snow after the highest temperatures of summer have passed. It is widely treated in Japanese media as an iconic seasonal marker signaling the transition from autumn to winter. Hokkaido, Japan's northernmost prefecture, regularly experiences the nation's earliest winter weather. Daisetsuzan, meaning "Great Snowy Mountains," features Mount Asahi (Asahidake) as its highest peak at 2,291 meters (7,516 ft). Historically, meteorological observers at local weather stations had to visually confirm the snow from their offices down in nearby cities, but automation and automated satellite/radar snow-depth analysis have recently replaced these visual checks to provide more objective, reliable meteorological records.

Comments

Popular posts from this blog

Typhoon No. 25 Disrupts Tokyo Game Show 2026: Cancellation Sparks Refund Confusion and Travel Woes

A New Species of Cat Discovered for the First Time in Over 100 Years! Meet the 'Tilkayo'

Strike Noir Gundam Returns in METAL BUILD 20th Memorial Color: Fan Excitement Overshadowed by Price Concerns