Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Coastal Waters Forecast for Northern Inland Waters Including The San Juan Islands (PZZ133) (Text-Only)
NWS Forecast for: Northern Inland Waters Including The San Juan Islands (PZZ133)
Issued by: National Weather Service Seattle, WA
Last Update: 243 AM PST Wed Jan 21 2026
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Today: N wind around 5 kt this morning, becoming light and variable. Waves around 2 ft or less. Areas of dense fog early this morning.

Tonight: Light and variable winds. Waves around 2 ft or less.

Thu: E wind around 5 kt in the morning, becoming light and variable. Waves around 2 ft or less.

Thu Night: N wind around 5 kt. Waves around 2 ft or less.

Fri: N wind around 5 kt. Waves around 2 ft or less.

Fri Night: NE wind around 5 kt. Waves around 2 ft or less.

Sat: NE wind around 5 kt in the morning, becoming light and variable. Waves around 2 ft or less.

Sat Night: Light and variable winds. Waves around 2 ft or less.

Sun: E wind around 5 kt. Waves around 2 ft or less.

Sun Night: E wind around 5 kt. Waves around 2 ft or less. A chance of rain after midnight.







Zone Forecast: Northern Inland Waters Including The San Juan Islands (PZZ133)

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