Dangerous thunderstorms hitting the West Coast on Wednesday could feature hail as large as tennis balls, damaging wind gusts and even a tornado, according to the National Weather Service.
The weather more typical of the Southeast than the Pacific Northwest will be primed by a moist and near record-warm air mass, creating an unstable atmosphere ripe for severe thunderstorms in Seattle and Portland, Ore.
A few isolated non-severe thunderstorms are possible in the morning in the northern Sacramento Valley all the way toward the Canadian border as a low-pressure system swings toward the West Coast. Thunderstorms are expected to become more widespread and extreme in nature throughout the afternoon and evening along the Interstate 5 corridor from roughly Eugene, Ore. to Seattle…