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

Fraser Valley Bandits draft Abbotsford’s Joel Friesen first overall

Professional basketball team reveals 13 players selected at CEBL draft

Abbotsford council votes to increase their event expense limits

Increase needed in case annual conferences require significant travel, staff say

Plans redrawn for Fraser Valley Inn redevelopment

Owner of building scales back plans on inn site, adds proposal to build second low-rise

LETTER: Why is Jati Sidhu ashamed of his riding?

Lytton’s Christopher di Armani shares his dismay at the potential name change of the MP’s riding

Solitary confinement gets overhaul at Abbotsford prison

‘It’s more social,’ Matsqui Institution’s citizens advisory committee chair says

Sparks fly as SUV speeds down wrong side of Highway 1 trying to flee RCMP

Captured on video, the vehicle headed westbound against oncoming traffic before crashing

VIDEO: Vancouver fall to Seattle in Game 2 of the playoffs

Thunderbirds topple the Giants 4-1 in Langley, evening the Western Conference series one game each

Calgary captain has 3 points as Flames torch Canucks 3-1

Giordano leads way as Alberta side cracks 100-point plateau

1,300 cruise ship passengers rescued by helicopter amid storm off Norway’s coast

Rescue teams with helicopters and boats were sent to evacuate the cruise ship under extremely difficult circumstances

Province announces $18.6 million for B.C. Search and Rescue

The funding, spread over three years, to pay for operations, equipment, and training

Vancouver-bound transit bus involved in fatal crash near Seattle

One man was killed and a woman injured in crash with bus purchased by TransLink

Late-season wave of the flu makes its round in B.C.

BC Centre for Disease Control reported 50 per cent jump in flu cases in first weeks of March

Most Read