The storms are from the jet stream moving from north of Seattle, to south of the region. When the jet stream is directly above us, we get storms.
Summer is when the jet stream is to the north, and we get included in the band of warm air that California always enjoys. Winter is when it moves to the south, putting the Seattle area in the cold band that Alaska always endures.
Summer is when the jet stream is to the north, and we get included in the band of warm air that California always enjoys. Winter is when it moves to the south, putting the Seattle area in the cold band that Alaska always endures.
The jet stream is late this year.