A high streamflow advisory issued on Friday remains in effect for parts of Vancouver Island and the south coast, as persistent weather systems continue to impact the region, according to a statement released today by the BC River Forecast Centre.
The advisory currently applies to the south coast, including the Sunshine Coast, Howe Sound, North Shore Mountains, Lower Mainland, and Fraser Valley.
It also affects areas along western Vancouver Island, such as Bamfield, Ucluelet, Tofino, Tahsis, Zeballos, and surrounding coastal communities.
Additionally, the Kingcome River area remains under close watch.
The next round of heavy rainfall is expected to begin Tuesday and last overnight into Wednesday.
Environment Canada is forecasting 50 to 70 millimetres of rain over Tofino today, with a possibility of thunderstorms overnight.
See also:
- Another windstorm is heading for Greater Victoria on Tuesday
- Multiple BC Ferries sailings cancelled amid high winds Tuesday
Areas of west Vancouver Island, Howe Sound, and Metro Vancouver are forecasted to experience substantial rainfall, which is anticipated to raise river levels significantly.
According to hydrologic modelling, water levels in these regions could reach two- to five-year highs, particularly in locations receiving the heaviest rain.
This may result in minor flooding in low-lying areas if precipitation exceeds initial forecasts, adding to the ongoing challenges from fast-rising streams and rivers.
The BC River Forecast Centre emphasizes that fast-flowing rivers present heightened risks to public safety, with potentially life-threatening currents in certain areas.
Residents are advised to exercise extreme caution and to avoid rivers and other bodies of water where currents may be unpredictable and dangerous.
To assist residents in preparing for potential hazards, the BC River Forecast Centre is actively monitoring conditions and will issue updates as necessary.
A high streamflow advisory indicates that river levels are rapidly rising, though major flooding is not currently expected. However, minor flooding remains possible in some low-lying areas.
If conditions worsen, the advisory could be upgraded to a Flood Watch, signalling that rivers are approaching or could soon exceed bankfull, raising the risk of flooding in surrounding areas.
The most severe warning level, a Flood Warning, is issued when rivers have exceeded their banks or imminent flooding is anticipated, potentially resulting in significant flooding in areas adjacent to affected rivers.
Residents are encouraged to stay informed as conditions evolve and to be cautious near water bodies within these affected regions.
