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

Highlights and winners from the Binche Fishing Derby

The third annual event was a massive succes

Buy BC relaunches to keep business local

Local farmers’ markets may benefit

Province expands program to keep youth away from gang life

The Government of British Columbia is providing $1.12 million in additional funding… Continue reading

Applications for high-speed internet in rural communities being accepted

According to a news release that was issued by the Ministry of… Continue reading

France doubles up Croatia 4-2 to win World Cup

Played in Moscow Russia, latest Fifa World Cup marks the highest scoring final since 1966

REPLAY: B.C.’s best video this week

In case you missed it, here’s a look at replay-worthy highlights from across the province this week

Non-union construction industry fears exclusion in B.C.

Premier John Horgan imposes ‘project labour agreements’ for public works

Trump, Putin sit down a bit late for closely watched summit

Trump and Putin arrived Monday at Helsinki’s presidential palace for a long-awaited summit.

In TV interview, Trump claims queen called Brexit ‘complex’

Asked the queen’s view on Brexit, Trump said: “She said it’s a very complex problem.”

Exotic corpse flower begins to emit its putrid scent at Vancouver conservatory

A unique and exotic tropical plant, acclaimed for its size and abhorred for its smell, is blooming at a Vancouver conservatory.

CREA reports June home sales down 10.7% from year ago, but up from May

The Canadian Real Estate Association says home sales in June were down 10.7 per cent compared with a year ago.

Tens of thousands give heroes’ welcome to Croatia team

Euphoria gave way to a mixture of disappointment and pride for Croatia fans after their national team lost to France in its first ever World Cup final.

Crews battle fire northeast of Terrace

The 10-hectare fire was discovered Saturday

Northern B.C. cadet goes from English Channel to BC Summer Games

Amber Ly is taking her experience aboard the tall ship Royalist with to Cowichan July 19-22

Most Read