B.C. flood watch to intensify over next week

Heat wave speeding up snowmelt process

A unusually warm spring heat wave is raising flood warning concerns across the Okanagan and Shuswap regions over the next week, according to the B.C. River Forecast Centre.

Dave Campbell, head of the forecast centre, says the snow melting has been accelerated by temperatures trending six to eight degrees above the normal average, mixed with the potential for the heat to be briefly interrupted by rain later this week.

Related: Temperature soar to record-breaking heights in Kelowan, Vernon

“The weather will be critical over the few weeks,” Campbell explained. “There is a strong high pressure surge right now will a small potential disturbance that will generate rain leading into the long weekend, but that high pressure system is expected to rebuild and be more prolonged leading into next week.”

Campbell said in the South Okanagan, the rising Similkameen River is causing flooding headache, with a new peak level expected to be reached within the next three to five days.

He said flow projections of 800 cubic metres a second are anticipated for the peak freshet period, having already reached 600.

Related: Provincial aid for flood victims

“How high it goes will depend on a couple of pieces. One is how much snow at the higher elevation melts as from the snow perspective at some point that process will run out of gas, and what uncertainty the weather might bring through this week, as getting more rain will bump things up again,” he said.

Campbell said the Central and North Okanagan regions haven’t dodged a flood bullet yet, noting the mid-snow levels, 1,500 to 2,000 feet, are about two-thirds melted while the higher elevations above that are about 10 to 20 per cent melted.

“I think it would be premature to talk about dodging a bullet. Uncertainty over all rivers in the region right now makes them extremely vulnerable to flooding at this stage. The Mission Creek system and some around Vernon are very much in a transition period so we’ll find out more about the risk factor as that high elevation snow starts to melt at a higher rate,” he said.

Campbell added the Salmon River in the Shuswap, like the Similkameen, is another river that has already seen some peaks and valleys in its freshet enhanced flows.

“I think (the Salmon River) is one of those rivers where we have seen it peak, have seen it come down a bit, and now we are seeing it rise again. With a further warming trend the next four to seven days will be critical. If we get through that, then we should start to see improving conditions.”

To report a typo, email: edit@kelownacapnews.com.


@BarryGerding
barry.gerding@blackpress.ca

Like us on Facebook and follow us on Twitter.

Just Posted

Radio reporting legend Angelo Iacobucci dies at age 60

Iacobucci developed a reputation for teasing competing reporters and loved to dominate media scrums and press conferences

Police chase ends in two arrests

Suspects in stolen truck evade RCMP from Alberta border to Clearwater area

Barriere family airlifted to Vancouver due to carbon monoxide exposure have now returned home

A family of five from Barriere was transported to Vancouver for medical… Continue reading

TNRD renews Dangerous Dogs Contract for area

Highlights from the Thompson-Nicola Regional District (TNRD) Board of Directors’ meeting of Nov. 22

Milobar wants to see details of NDP’s Clean BC Plan

Jessica Wallace Kamloops This Week Environment advocates call for action from Prime… Continue reading

VIDEO: Ex-NASA engineer pranks mail thieves with glitter bomb trap

Package thefts are common this time of year, but YouTuber Mark Rober used his engineering skills

FortisBC says you can return to normal gas use following pipeline fire

Utility says increased pipeline capacity, warmer weather have allowed supply to reach normal levels

CSIS collected info on peaceful groups, but only in pursuit of threats: watchdog

Security Intelligence Review Committee says fears unjustified after reviewing evidence, testimony

Canada ranks 16th on annual gender gap list

This is the second year Canada has placed 16th in the World Economic Forum’s list

VIDEO: Tornado rips through city west of Seattle

Reports indicate five to seven homes damaged in Port Orchard, Wash.

Trial date postponed for man charged with killing Abbotsford police officer

Oscar Arfmann’s trial pushed back from January to May 2019

Privacy watchdog says legal cannabis buyers should use cash, not credit

Some countries could bar entry to individuals if they know they have purchased cannabis

‘A start:’ Alberta critical of Ottawa’s $1.6B package for ailing energy sector

A further $150 million is to be used for clean growth and infrastructure projects

New B.C. Lions coach DeVone Claybrooks adds eight to coaching staff

DeVone Claybrooks has filled out his staff for the 2019 season

Most Read