Marine Weather and Tide Forecast for Williams, OR

AVIATION
18/18Z TAFs...Onshore flow near the coast led to low ceilings, some fog and drizzle at the beaches and at North Bend this morning. These ceilings should erode in the next few hours becoming VFR this afternoon. Low-level flow will become offshore again tonight, but there could be a period of IFR/LIFR again with temps dropping quickly after sunset. These could then dissipate by early Monday morning.

Meanwhile, status quo inland with LIFR fog/low clouds persisting in the Umpqua Basin (Roseburg) and portions of the Rogue/Illinois valleys (especially Grants Pass/Cave Junction). These will erode this afternoon, breaking for a couple of hours in most places before returning this evening and lasting overnight into Monday morning.

Around Medford, fog has been developing out around the Table Rocks and briefly impacting the terminal toward morning. So have gone with persistence allowing for a brief period of IFR/LIFR visibility 14-17Z.

MARINE
Updated 200 PM PST Sunday, January 18, 2026...An extended stretch of relatively calm conditions will persist through midweek. Generally light winds and low seas are expected tonight.
North to northeast winds increase a bit Monday, but both winds and seas should remain below advisory levels. A long period swell will move through the waters Monday night into Tuesday with a brief return of light southerly flow over inner waters that shifts back to the north on Wednesday. North winds could increase enough Thursday or Friday to bring conditions hazardous to small craft, especially south of Cape Blanco.

BEACH HAZARDS
Updated 200 PM PST Sunday, January 18, 2026...A low amplitude (3-6 ft), but long period (18-20 seconds) swell is expected to move into the coastal waters Monday evening and persist through the high tide on Tuesday. This will increase the risk of sneaker waves on area beaches, especially on the incoming tide Tuesday morning.

If you plan to visit area beaches, please be aware of the dangers sneaker waves pose to beach goers. Sneaker waves can run up significantly farther on beaches than normal, including over rocks and jetties. These waves can suddenly knock people off of their feet and sweep them into the ocean. The waves can also move logs or other objects which could crush or trap anyone caught underneath. While sneaker waves can occur at any time, the greatest risk is on an incoming tide. Please be aware of the tides if venturing out onto the beaches. NEVER turn your back on the ocean!

MFR WATCHES/WARNINGS/ADVISORIES
OR...Beach Hazards Statement from Monday evening through Tuesday afternoon for ORZ021-022.

Air Stagnation Advisory until 4 PM PST Wednesday for ORZ023-024- 026-029>031.

Dense Fog Advisory from 7 PM this evening to noon PST Monday for ORZ023.

Freezing Fog Advisory from 8 PM this evening to noon PST Monday for ORZ024.

CA...None.

PACIFIC COASTAL WATERS...None.