The weather will be changing Monday as a strong system moving in. The day starts dry, but rain and thunderstorms chances increase after 3 to 4 pm and continue Monday night into Tuesday. The system has the potential to produce some strong thunderstorms or even isolated severe thunderstorms. The highest potential for these stronger thunderstorms will be over southeast WA and the central and southern ID Panhandle between 3 pm and 7 pm PDT.