A blaze broke out over the weekend west of Summerland that has scorched at least ten hectares of forest.

The fire, which is 35 kilometres west of Summerland, was being worked on by two dozen firefighters, three helicopters and an air tanker on Sunday.

The fire is one of ten that broke out in the Okanagan over the weekend as temperatures reached the mid 30s.

No homes are threatened by the fire as it is in a remote location and it is believed to be caused by "holdover lightning", a phenomenon in which grass and bush fires move underground.

Forecasts are calling for a chance of thunderstorms this afternoon and temperatures to break the 30 degree mark again.

Anita Sthankiya -Penticton