Intense fires continued to burn in the boreal forests of eastern Siberia on August 1, 2010. The fires span the borders of Russia’s Chukotskiy, Magadan, and Koryakskiy provinces.

Burning in coniferous (evergreen) forests, the fires blanketed northeastern Siberia with thick brown smoke. The smoke hugs the ground near the fires, filling valleys, and soars over clouds farther away from the flames. On August 1, the smoke flowed north from the fires and over the Arctic Ocean. A wide view of the Arctic shows the smoke crossing the Bering Strait and clouding skies over northern Alaska.

Source: NASA Earth Observatory