It's not expected to be as drenching as the first rainstorm the weekend of Nov. 14.
However, the Tri-Cities is in for another continuous stretch of heavy rainfall as up to 80 mm is predicted during the third atmospheric river event for B.C.'s Lower Mainland between now and tomorrow (Dec. 1).
Environment Canada issued a fourth rainfall warning for the region in under three weeks at 11:16 a.m. today (Nov. 30)
Meteorologists believe freezing levels and snowmelt is also very likely in higher elevations and may contribute to increased runoff in Coquitlam, Port Coquitlam, Port Moody, Anmore and Belcarra.
"Heavy rain may ease somewhat tonight but will persist through Wednesday as a cold front moves across the region," Environment Canada explains in its latest statement.
"Heavy downpours are likely to cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible."
Winds are in the forecast to gust between 20 and 40 km/h for inland communities and up to 60 km/h near the water.
As of 11:55 a.m., roughly 35 mm of rain has accumulated in the last 24 hours at Coquitlam's gauge on Burke Mountain.
More than 200 mm of rain downpoured on the city during the last warning between Nov. 26 and 28.
BC Hydro has also implemented signs along the Coquitlam River Trail warning residents and hikers of the rising water levels.
They — along with other experts — are encouraging everyone to stay clear of rivers, creeks and culverts, as well as banks as they may become unstable.
The City of Port Coquitlam is set to monitor pump stations and to be alert to other issues that arise.
In Coquitlam, the city is advising people to avoid forested parks and trails along rivers and pathways on steeper slopes during the current rain events.
Workers are set to go for 12-hour shifts, while its Emergency Operations Centre is supporting coordinated works across all city departments to ensure the city is prepared for the upcoming weather systems, a spokesperson told the Tri-City News via email.
The City of Port Moody is advising residents via Facebook to clean catch basins to prevent pooling water and flooding.
- with a file from Diane Strandberg, Tri-City News