This GOES-W repeating satellite time-lapse video provided by the National Weather Service in Portland, captured between 8 a.m. and noon, shows the swirling system approaching Oregon. Clear skies earlier today helped warm the atmosphere — a key ingredient for thunderstorm development later on. Forecasters said hail could reach lime-size, and Portland’s tornado risk — between 5% and 9% — is unusually high for the region. Storms have already developed in Lane County and were expected to move north