Photos and videos of flooding have trickled out of B.C. as an atmospheric river continues to soak parts of the province

Search and rescue crews in B.C.'s Lower Mainland say they are on standby to help with possible evacuations as an atmospheric river makes its way through southwestern B.C. on Saturday. The heavy rainfall has caused widespread power outages and flooding,

B.C. residents will need to beware the risk for additional flooding and other potential impacts, including road washouts, rockfalls, and even landslides where the heavier rain continues to fall on Sunday.

The federal weather agency warns that heavy downpours can cause flash floods and water pooling on roads, and that localized flooding in low-lying areas is possible. Rapidly rising rivers and creeks can sweep away bridges, culverts, buildings, and people. Landslides may occur in vulnerable areas such as steep slopes.

By Sunday, between 80 and120 millimetres of rain is expected to fall, with the intensity expected to ease Saturday night before a second round of heavy rain on Sunday.

An atmospheric river weather system has hit much of coastal British Columbia, bringing heavy rain, high winds and the risk of flooding.