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

Colwood’s Esi Edugyan wins $100K Giller prize for Washington Black

Edugyan won her first Scotiabank Giller Prize in 2011 for Half-Blood Blues

Help Polar Express and pancakes fight child hunger

Rotary of Victoria and Breakfast2Music look for event sponsors

More opioid harm reduction resources needed for B.C. youth

Front-line workers advocate for a youth-targeted supervised consumption site in Greater Victoria

Good energy marks third annual celebration of welcome pole

Nov. 22 is Sno’uyutth day in Oak Bay with good energy at Windsor Park beginning at 7 p.m.

Peninsula cab companies want level playing field with ride-hailing legislation

Taxi services concerned they’ll be undercut by Uber, Lyft

Unique technology gives children with special needs more independent play

UVic’s CanAssist refined seven prototypes aided by $1.5M government contribution

No deal in sight: Canada Post warns of delivery delays into January

Union holds fifth week of rotating strikes as both sides remain apart on contract negotiations

COLUMN: Higher interest rates will slow B.C. economy after ‘unusually robust’ show

Jock Finlayson is executive vice president and chief policy officer of the Business Council of BC

Jason Aldean, Old Dominion to headline Merritt’s Rockin’ River concerts next summer

Four-day music festival at Coldwater River from Aug. 1 to 4

Takedown of deranged, slashing man with knife earns Vancouver Island RCMP officers bravery honour

“The members feel they were just doing their job, I have to disagree. They went above and beyond.”

Courtenay’s new council cycles to its first meeting

Councillors kick off term on two wheels to make a statement

Nanaimo billing ‘drug and theft house’ for police calls

City takes steps under nuisance property bylaw

Police looking into two more incidents at private Toronto all-boys’ school

Police and the school have said two of the prior incidents involved an alleged sexual assault

Bovine tuberculosis found in cow on southern B.C. farm

CFIA said the disease was found during slaughter and they are investigating

Most Read