Environment Canada has issued another weather warning for the South Coast of British Columbia. An atmospheric river event is expected to melt weeks' worth of snow at a rapid rate which could trigger localized flooding. However, weeks worth of built up snow and ice is expected to melt aggressively which could cause washouts near rivers, creeks and culverts. “The rainfall itself you know this would probably show up as being a fairly run-of-the-mill moderate storm event that we’ve seen a half dozen times or more this season,” said Dave Campbell, of the River Forecast Centre. Heavy downpours can cause flash floods and water pooling on roads, so drivers are being urged to slow down and drive for the conditions.