Weather Alert

To:         South East Region Contacts:

For your information, following is a Alert for SEA Weather as forwarded from Environment Canada.

Issued at 2023-05-04 18:51 UTC by Environment Canada:
Special weather statement issued for:
   Arrow Lakes – Slocan Lake, B.C. (084100)
   Boundary, B.C. (084200)
   West Kootenay, B.C. (084300)
   Kootenay Lake, B.C. (084400)

Current details:
Heavy rain possibly contributing to the escalating flooding situation and mudslides.

When: Friday through Saturday night.

Where: Central Okanagan – including Kelowna, South Okanagan – including Penticton, Boundary, Arrow Lakes – Slocan Lake, West Kootenay, Kootenay Lake and Highway 3 – Paulson Summit to Kootenay Pass.

Hazards: New flooding, exacerbation of existing flooding, and mudslides are possible from heavy rainfall on melting mid-high elevation snowpack.

Remarks: Showers at times heavy will develop on Friday as the first of multiple systems embedded in the flow arrives. By Friday afternoon, showers will intensify with embedded thunderstorms further increasing precipitation amounts.

Confidence remains low on spatial extent and intensity as the high precipitation amounts will depend on the embedded thunderstorms. Nevertheless, the threat for sudden heavy downpours and flash flooding on top of the volatile spring snowmelt conditions remains.

Rainfall warnings may be issued as certainty grows. Please refer to the British Columbia River Forecast Centre for local messaging on flood potential.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to or tweet reports using #BCStorm.

More details on the alert are available here.

The latest status and details on all alerts, including alerts that are not part of your subscription, can be found here:


Village of New Denver
115 Slocan Avenue
PO Box 40
New Denver, BC V0G 1S0

Phone: 250 358 2316

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