A heavy rain warning has been issued. (files)

Heavy rain advisory for Lower Mainland

High streamflow advisory, issued by the River Forecast Centre for the South Coast.

  • Jan. 28, 2018 6:00 p.m.

A heavy rain warning has been issued for the Lower Mainland, according to the watch commander for Mainroad Contracting.

“A weather event is anticipated to impact the Lower Mainland within the next 24 hours. In anticipation, Mainroad will be patrolling for flooding problems on all highways until the event passes, roadways are clear and back to normal.”

Mainroad’s 24-hour communications and dispatch office will pass on observations and concerns to crews when contacted.

According to Environment Canada, 40 to 50 millimetres of rain is expected to fall at Pitt Meadows airport Sunday night, with the temperature rising to 10 C by morning.

The rain is expected to cease in the afternoon Monday. The forecast for later that day is a 30 percent chance of showers, with another 10 to 15 mm, and a similar amount overnight.

Rain is expected throughout next week.

As well, a high streamflow advisory, issued by the River Forecast Centre for the South Coast, remains in effect.

The advisory is for: Howe Sound, including the Stawamus River and surrounding creeks and tributaries; Sunshine Coast, including streams around Gibsons, Sechelt and surrounding areas; North Shore Mountains, including the Seymour River and surrounding creeks and tributaries; and the Lower Fraser Valley, including the Chilliwack River and surrounding creeks and tributaries.

“An atmospheric river storm event is expected to impact the south coast of British Columbia Sunday and Monday. Rainfall amounts are forecast between 50-200mm. Freezing levels are expected to rise into the 1,500-2,000 m range during the storm. Snowmelt from mid-elevation terrain may add to runoff for this event. In watersheds with higher terrain, including the Squamish River and Lillooet River, snow may be the dominant form of precipitation, and river responses are expected to be lower than more coastal areas.”

River levels are expected to rise rapidly in response to heavy rain. High streamflow is expected on rivers throughout the region, with the highest flows expected on Monday and possibly Tuesday.

The River Forecast Centre will continue to monitor conditions and will update the advisory as conditions warrant.

• Mainroad Communications and dispatch: 604-271-0337.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Wally Oppal says policing ‘too important’ to be left to the police

Oppal was keynote speaker at a Surrey Board of Trade “Hot Topic Dialogue” breakfast event Wednesday

Surrey skater speeds his way to four golds, a silver at BC Winter Games

‘I just really enjoy going fast on the ice,’ says Barnett Liu, 14

‘Urgent’ need for Metro Vancouver homeless count volunteers

Organizers say another 100 people are sought to help in Surrey and Burnaby

UPDATE: Surrey RCMP say missing 14-year-old has been found and is safe

Brayden Ritchat, 14, had been last seen in the 10800-block of 141st Street in Whalley on Feb. 21

United Nations designates Surrey a ‘Tree City’

Surrey is one of 59 cities in the world to receive the designation

VIDEO: Minister says consider coronavirus outbreak when planning for spring break

Foreign Affairs minister points to rash of new cases appearing in places like Italy and Iran

Alberta tourist dies after plunge from 70-metre cliff in Stanley Park

The 26-year-old hopped a fence at Prospect Point on fell to a walkway below, police said

B.C. man who pulled a gun on off-duty cop gets two years in prison

Encounter also led police to a home where 100 guns and explosives were found

New Westminster woman’s ‘out of character’ disappearance probed by police

She left without telling anyone, prompting investigation by Major Crimes Unit, police say

EDITORIAL: Fraser Health needs to be transparent to fight coronavirus panic

Fraser Health and other authorities are not helping by being vague in recent communications

Riverdale actress Lili Reinhart rescues puppy from Langley shelter

American actress named her adopted pup Milo

How clean is your favourite local restaurant or café?

Online inspection reports allow consumers to find health hazard of all food facilities in region

Protecting privacy key to stopping spread of COVID-19, B.C. health officials say

The number of coronavirus cases in B.C. remains at seven

Most Read