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

“Huge disappointment” as BCVT learns Northern Sea Wolf will not sail this summer

The Nimpkish is arrriving near-empty as frustrated travelers can’t get to Bella Bella for transfer

Protection order issued after Bella Coola bear attack

Fruit trees to be removed after sow grizzly defended cubs and sent man to hospital

Bella Coola enjoys 33rd Annual Valley Ridge Riders Rodeo

Sunny skies on Monday added a welcome touch to an otherwise damp weekend

First Nation pipeline protesters erect ‘tiny homes’ in B.C. Park

Kanahus Manuel and Tiny House Warriors say more homes being constructed in park

Greyhound to end bus service in B.C., Alberta

Company axing passenger bus and freight services in Prairies, and cutting all but one route in B.C.

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

Air quality statement warns of smoky air for Kamloops area

Environment ministry says area on north side of Thompson River may be affected by wildfire smoke

Pussy Riot claims on-field protest at World Cup final

Russian protest group claimed responsibility after four people ran onto field in police uniforms

Fans party on Montreal streets after French World Cup win

To city is home to nearly 57,000 French nationals

B.C. VIEWS: Making private health care illegal again

Adrian Dix battles to maintain Cuba-style medical monopoly

Almost every part of Canada’s largest national park deteriorating: federal study

Drawing on decades of research — the report lists 50 pages of citations

Activists protest outside Kinder Morgan terminal in kayaks, canoes

Tsleil-Waututh elder Ta’ah Amy George led the water ceremony from a traditional Coast Salish canoe

Canadian soccer fans brace for World Cup final between France, Croatia

First ever final for the Croatians, while it’s France’s third, going into match as betting favourite

B.C. Lions claw their way back to score 20-17 victory over Winnipeg Blue Bombers

The Bombers, who beat the Lions 41-19 last week in Edmonton, fell to 2-3 with the loss

Most Read