A rainfall warning has been issued for North Coast inland sections.
Environment Canada says a storm will stall just off the Central Coast and will remain in place on Monday.
Kitimat is expected to be the hardest hit area in rainfall amounts.
Rainfall amounts are expected to reach up to 100 mm through Monday night.
Localized flooding in low-lying areas is possible.
Lighter amounts are expected before the front finally moves off the east on Tuesday.