Flood Warnings and Advisories

High Streamflow Advisory - Okanagan, North Thompson (NEW) - Nicola Lake, South Thompson (MAINTAINED)
ISSUED: 3:00 PM June 12th, 2020

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

  • Central Okanagan including tributaries around Kelowna including Mission Creek and Mill Creek and surrounding areas
  • North Okanagan including tributaries around Vernon, Lumby, Winfield and surrounding areas
  • North Thompson River and tributaries

The River Forecast Centre is maintaining a High Streamflow Advisory for:

  • Nicola Lake
  • South Thompson River including Shuswap River, Shuswap Lake and tributaries

Localized thunderstorms causing heavy downpours are possible on Friday across the Central region. On Saturday, a vigorous cold front is forecast to cross southern B.C. generating strong thunderstorms. Freezing Levels are expected to drop from approximately 4,000 m on Saturday to 2,200 metres by Sunday. Forecast precipitation rates for the event vary but could be as high as 50 mm with downpour rates as high as 15-20 mm/hr. 

River and creek levels may rise rapidly over the weekend depending on the timing and location of the heaviest rainfall.

The public is advised to stay clear of the fast-flowing rivers and potentially unstable riverbanks during the high-streamflow period.

The River Forecast Centre continues to monitor the situation and provides updates as conditions warrant.

Contact for Media Relations, Ministry of Forests, Lands, Natural Resource Operations and Rural Development:
Tel: 250 356-7506

Levels of Warnings/Advisories:

  1. High Streamflow Advisory: River levels are rising or expected to rise rapidly, but that no major flooding is expected. Minor flooding in low-lying areas is possible. This is the lowest level.
  2. Flood Watch: River levels are rising and will approach or may exceed bankfull. Flooding of areas adjacent to affected rivers may occur. This is the intermediate level.
  3. Flood Warning: River levels have exceeded bankfull or will exceed bankfull imminently, and that flooding of areas adjacent to the rivers affected will result. This is the highest level.


  1. Home of River Forecast Centre
  2. Current Streamflow Conditions and Flood Forecast Modeling
  3. Map of Current Streamflow Return Periods for All WSC Stations
  4. CLEVER Model 10-day Forecasts of Discharges and Return Periods
  5. COFFEE Model 5-day Forecasts of Discharges and Return Periods
  6. Back to page of Flood Warnings and Advisories