UPDATE: 4:30 p.m.
Environment Canada has upgraded the severe thunderstorm warning to a watch.
Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce large hail, torrential rainfall and damaging winds.
The warning effects the entire Okanagan and Shuswap region. Residents are warned to prepare for severe weather.
Another thunderstorm is forecast for the entire Okanagan Valley, Shuswap and Similkameen on Friday.
Environment Canada is anticipating strong winds, hail and heavy rain.
Between 5 to 10 mm of rain is expected with winds gusting up to 20 km an hour by Friday afternoon.
Residents are warned to prepare for severe weather later in the day and to watch for lightning.
Those living in the South Okanagan are reporting lightning strikes in the area.
Check out the video below from Thursday night’s storm in Penticton.