Environment Canada has issued widespread rainfall warnings as a new system moves into the Fraser Valley in British Columbia. The region, which was dealing with widespread flooding from overflowing border rivers just a week ago, is now facing the threat of heavy rain and the possibility of flash flooding.

Up to 80 millimetres of rain is forecast in some areas, with the heaviest rainfall expected on Monday.

Rainfall to continue through Monday night

The weather service said the rain began on Sunday and will continue through Monday night. The warnings are not limited to the Fraser Valley, but also include Abbotsford, Metro Vancouver and several surrounding areas.

Experts warn that soils and fields saturated by recent floods may not be able to absorb the new volume of rainfall; Conditions that could lead to localized flooding and sudden rise in river levels.

Concerns over rising river levels in Chilliwack

City officials in Chilliwack have said that local river levels are likely to rise as the rain continues.

While the risk of severe flooding is not expected to be as severe as last week, the risk of localized flooding remains and residents are urged to heed official warnings.

Abbotsford eases restrictions, but concerns remain

After recent flooding subsided, the city of Abbotsford was able to lift evacuation advisories for 1,069 properties in the Sumas Prairie West and Sumas Prairie East areas.

Some evacuation orders have also been reduced to warning levels, and a number of residents have been able to return to their homes.

However, the situation is still not completely normal:

325 properties are still under evacuation orders

160 properties are still under evacuation warnings

Central Fraser Valley Search and Rescue said flooding along the Sumas River is now under control, but stressed that residents should leave the area immediately if any new official orders are issued.

Be prepared for emergencies

With heavy rains ahead and the vulnerability of land still saturated from previous flooding, provincial officials are urging Fraser Valley residents to be fully prepared for emergencies and to continue to monitor weather advisories and safety advisories.