A 10-mile ice jam on the Lower Kuskokwim River has caused severe flooding in Tuluksak, with the area experiencing its worst flooding in over a decade.

Southern Brazil is grappling with severe flooding, with further storms and heavy rains forecasted, causing widespread displacement and damage.

Floodwaters in Tomsk region threatens to submerge the river banks in Seversk where highly radioactive liquid waste from the Soviet Union's nuclear weapons program for decades were injected into two unprotected underground reservoirs.

The swelling Tom River in southwestern Siberia has led to a partial dam collapse in the city of Tomsk. This year’s heavy rainfall, combined with abnormally warm spring weather, has led to severe flooding in Russia’s Urals and western Siberia. So far, the floods have submerged around 15,600 homes and 28,000 land plots in 193 Russian towns and cities across 33 regions.

The mayor of the southern Russian city of Orenburg urged residents to evacuate immediately on Friday as water in the nearby Ural River reached critically dangerous levels and was not expected to recede until next week.

Unprecedented flooding strikes Kazakhstan and Russia, marking the worst in decades for the region. The worse than usual seasonal floods have been caused by melting snow. Across the border in Russia, an oil refinery in the city of Orsk, 1,800km southeast of Moscow, has stopped operations because of the floods.

Powerful storm surges, coinciding with the monthly astronomical high tide, are flooding low-lying streets in Portland and other coastal communities.