SPOKANE, Wash. (AP) — The National Weather Service in Spokane has issued a flood warning for numerous lakes and rivers in Eastern Washington and northern Idaho.

The Weather Service says rising temperatures this week will increase snowmelt and runoff.

Minor flooding is occurring on the Similkameen River near Nighthawk, and major flooding is forecast for later in the week.

The Okanogan River near Tonasket is running at more than 18 feet, while flood stage is 15 feet. The Okanogan River is expected to rise to more than 21 feet by Saturday, which may flood some homes and farmlands.

The Kettle River above Curlew is also above flood stage and major flooding is expected.

Over in northern Idaho, Lake Pend Oreille (pawn'-duh-ray) is expected to reach flood stage on Thursday.