Flood Warnings and Advisories

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Glacier
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Flood Warnings and Advisories

Post by Glacier »

High Streamflow Advisory – BC Interior
ISSUED: 4:30 PM April 25, 2018

The River Forecast Centre is issuing the High Streamflow Advisory for:

South Interior
Boundary
Kootenay
Central Interior

A ridge of high pressure is building across British Columbia, ushering in the first prolonged warmer weather period of the freshet season. Temperatures are expected to gradually rise through Friday, with temperatures expected to reach in the low to high 20s throughout most of the BC Interior.

Snow pack observations at automated snow weather stations across the province have shown snow accumulation up until the past few days, and at higher elevations (above approximately 1500-1600m), much of the forecasted heat will translate into ripening the snow pack. At low-to-mid elevations (approximately 900-1500m) snow packs have ripened, and are now experiencing snowmelt. With warming over the next few days, the melt of these low-to-mid elevation areas is expected to accelerate. Current weather forecasts are indicating the potential for an upper low system to transition to wetter weather, particularly for south-east BC.

While it is still too early in the snow melt season for significant flows in the larger river systems of the province, smaller streams and tributaries that are fed by low-to-mid elevation terrain are at the greatest risk of high flows over the next several days. These areas include:

    Okanagan - including tributaries in the Oliver, Osoyoos, Summerland, Penticton, Kelowna, Vernon and surrounding areas
    Similkameen - including the Tulameen and tributaries
    Boundary - including the West Kettle River, Kettle River, Granby River and surrounding tributaries
    Kootenay - including the Moyie River and mid-elevation tributaries in the Castlegar, Trail, Salmo, Creston, Cranbrook and surrounding areas
    Central Interior – including the Bonaparte River, Salmon River (around Falkland), West Road River, Baker Creek, and tributary flows around Merritt, Cache Creek, Quesnel, Williams Lake and surrounding areas (some of these areas have experienced extensive forest fires in 2017 which may exacerbate high flows)

Some of these regions have been experiencing high flows already this season, and runoff is expected to increase. Other areas have yet to experience significant flows yet this season. Snow packs are extreme in many of these regions, with increased flood risk due to the significant amounts of water that are available for runoff.

The River Forecast Centre will continue to monitor conditions and update this advisory as conditions warrant.


The Blackwater west of Quesnel is absolutely booming right now! Because that area got decimated with fire last year, the snow is all melting at once. The melt is so fast in fact that the current river level is the 4th highest ever recorded.

blackwater.png
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alanjh595
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Re: Flood Warnings and Advisories

Post by alanjh595 »

UPDATE: 9:20 a.m.

Washouts around the Cache Creek area have several highways closed Saturday morning, as floodwater spreads across much of the village itself.

Highway 97 in the northbound direction is closed at the junction with Highway 1, right in Cache Creek, while farther north, the same highway is closed in both directions at the junction with Highway 99.

East of Cache Creek, Highway 1 is closed in both directions, six kilometres west of Savona, while south of Cache Creek, Highway 1 is closed in both directions at Spences Bridge.

Farther south, Highway 8 is closed in both directions, 24 km west of Merritt.

Late Friday evening, the River Forecast Centre issued a flood watch warning for the Central Interior, including tributary rivers around Cache Creek, Merritt, Williams Lake, Quesnel and surrounding areas.


https://www.castanet.net/news/BC/224913 ... close-hwys
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Queen K
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Re: Flood Warnings and Advisories

Post by Queen K »

Now it's Tulameen, BC. Ever drive down that way? Pretty retirement/summer area. I highly recommend the drive from Princeton through Coalmont and Tulameen and out to the Connector. Nice long drive though, take supplies.

https://www.castanet.net/edition/news-s ... htm#224939
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ferri
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Re: Flood Warnings and Advisories

Post by ferri »

Tulameen River feeds into the Similkameen which feeds into the Okanogan. This is going to get interesting. :135:
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alanjh595
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Re: Flood Warnings and Advisories

Post by alanjh595 »

That's what the USA gets in return for sending all their snow North in the Winter............in the Spring, when the Canadian Okanagan needs to flush, the water has got to go somewhere. We didn't like it and are sending it back in liquid form.
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