•South Okanagan – including Penticton

Heavy rain is developing – potential flash flooding.

An area of rain with embedded thunderstorms is developing over the Southwest Interior in response to an inflow of moist sub-tropical air. This rain area will move northeastward toward the Columbias this evening. General rainfall amounts will be 15 to 25 mm through tonight with locally higher amounts of 40 mm under thunderstorms.

Heavy rainfall rates of more than 15 mm per hour could occur. Due to the drought conditions over these regions, the soil has a reduced capacity to absorb water. Thus heavy rainfall increases the risk of flash flooding.

To mitigate the risk of flash flooding, make sure drain spouts and sewer covers are free of debris, so water can freely drain.

During heavy rains, avoid roadway underpasses, drainage ditches, low lying areas and water collection areas. They can unexpectedly flood or overflow. Do not try to drive across a flooded road. You cannot tell the condition of the road under the water.

The public is advised to monitor future forecasts and warnings as warnings may be required or extended.

Please monitor the latest forecasts and warnings from Environment Canada at www.weather.gc.ca.