Weak Atmospheric River Brings Rain, Wind to Seattle
Weak Atmospheric River Brings Rain, Wind to Seattle
US · Published Sep 29, 2026
• A weak atmospheric river is set to bring rain and gusty winds to Seattle and surrounding areas starting Monday evening.
• This weather system, characterized by a tropical moisture source, will primarily affect the North Sound region with steady rains and breezy conditions.

Impact & Risks

The atmospheric river event is expected to have minimal impact, with light to moderate rainfall and gusty winds. A Wind Advisory is in effect for the San Juan Islands and Whatcom County from 2 a.m. to 2 p.m. Tuesday, where gusts could reach 45 mph. While the rain may cause brief disruptions during commutes, no significant flooding or damage is anticipated. The event will primarily affect areas north of Everett, with lighter rainfall expected in the South Sound region.

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