The National Weather Service has issued Red Flag Warnings for the areas shown in blue on the map to the right.
Thunderstorms, some of which will be dry are moving from the south to the north across Oregon Tuesday.
These storms will contain frequent lightning, little rain and gusting winds. Winds of 25-50 mph are possible. Numerous fire starts are expected in areas with dry fuels.
Most of the thunderstorm activity will die down late Tuesday night.