Marine Weather Net

Florence to Cape Blanco OR from 10 to 60 NM Marine Forecast


TODAY

N
WINDS
5 - 10
KNOTS

TONIGHT

NW
WINDS
5 - 10
KNOTS

FRI

SW
WINDS
5 - 10
KNOTS

FRI NIGHT

NW
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
PZZ370 Forecast Issued: 216 AM PDT Thu May 15 2025

Today...N Wind 5 To 10 Kt. Seas Around 4 Ft, Building To 5 To 6 Ft This Afternoon. Wave Detail: Nw 2 Ft At 4 Seconds, Nw 5 Ft At 12 Seconds And Sw 2 Ft At 14 Seconds. A Slight Chance Of Showers Late This Morning. A Chance Of Showers This Afternoon.
Tonight...Nw Wind 5 To 10 Kt. Seas 4 To 5 Ft. Wave Detail: Nw 2 Ft At 4 Seconds And Nw 5 Ft At 11 Seconds. A Slight Chance Of Showers In The Evening.
Fri...Sw Wind 5 To 10 Kt. Seas 3 To 5 Ft. Wave Detail: Sw 2 Ft At 4 Seconds And Nw 5 Ft At 13 Seconds. A Slight Chance Of Showers In The Morning. Patchy Fog In The Morning.
Fri Night...Nw Wind 5 To 10 Kt. Seas 6 To 7 Ft. Wave Detail: Nw 3 Ft At 4 Seconds And W 7 Ft At 12 Seconds. Patchy Fog In The Evening. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight.
Sat...Nw Wind 10 To 15 Kt, Rising To 15 To 20 Kt With Gusts Up To 25 Kt In The Afternoon. Seas Around 7 Ft. Wave Detail: Nw 4 Ft At 6 Seconds And W 6 Ft At 11 Seconds. A Chance Of Showers, Mainly In The Morning.
Sat Night...Nw Wind Around 20 Kt With Gusts Up To 25 Kt. Seas Around 6 Ft. Wave Detail: Nw 5 Ft At 7 Seconds And W 4 Ft At 10 Seconds. A Slight Chance Of Showers.
Sun...Nw Wind 15 To 20 Kt. Seas 5 To 6 Ft, Building To 7 Ft In The Afternoon. Wave Detail: Nw 6 Ft At 7 Seconds And W 2 Ft At 12 Seconds.
Sun Night...N Wind 10 To 15 Kt. Seas 6 To 7 Ft. Wave Detail: Nw 3 Ft At 5 Seconds, Nw 6 Ft At 8 Seconds And W 3 Ft At 12 Seconds.
Mon...W Wind 5 To 10 Kt. Seas Around 5 Ft. Wave Detail: Nw 2 Ft At 4 Seconds, W 4 Ft At 11 Seconds And S 2 Ft At 15 Seconds.
Mon Night...Nw Wind 5 To 10 Kt, Becoming N 10 To 15 Kt After Midnight. Seas 4 To 5 Ft. Wave Detail: N 3 Ft At 4 Seconds, W 4 Ft At 10 Seconds And N 2 Ft At 8 Seconds.
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Area Forecast Discussion
National Weather Service Medford OR
Issued by National Weather Service Portland OR
240am PDT Thu May 15 2025

An extensive area of clouds has pushed into the coast and the Umpqua Basin this morning ahead of a weak front that will push towards the coast today. Otherwise, skies remain mostly clear across the forecast area, with the exception of a thin layer of cirrus moving overhead.

The weak front arrives later today, with light showers possible along the coast, into the Umpqua Basin and into the Cascades north of Crater Lake. A few showers may make it into northern Lake and Klamath counties as well, but any precipitation there would be spotty at best.

Dry weather returns Friday as weak high pressure returns, with milder temperatures in the afternoon. Some brief clearing skies are possible as well, but will be short lived.

There's good agreement that another, but stronger upper trough will move in from the northwest Friday night and Saturday resulting in cooler temperatures and increasing shower chances. Showers will become more frequent in the afternoon due to daytime heating and the resulting increased instability. Isolated thunderstorms are also possible Saturday afternoon, but the general consensus is instability will be greatest east of the Cascades, thus have a slight chance of storms in this area.

The upper trough will exit out of the area Saturday night, but there's some question as to the location of another weak upper trough to follow Sunday. The operational GFS (Global Forecast System) slides the upper trough over our area while the ECMWF (European Centre for Medium-Range Weather Forecasts) has it farther north which would favor a drier solution. The respective individual ensemble members pretty much follow the operational solutions. Additionally, the majority of the clusters also lean towards a dry solution. The one commonality is they all show drying Sunday afternoon. Therefore we'll keep a slight chance of showers for the northern Cascades, and portions of the Coastal counties Sunday morning with dry conditions in the afternoon.

The general consensus shows upper ridging building in Sunday night through Monday. The operational ECMWF suggest the ridging will flatten out as a shortwave moves in from the west, and shows some evidence of light precipitation for the northwest part of the area. However the majority of the individual ECMWF ensemble members and clusters favor stronger upper ridging, thus we'll keep the forecast dry for the start of next week.

In fact most, if not all of next week could end up dry with sufficient evidence supporting stronger ridging to at least keep the storm track north of our forecast area. -Petrucelli/BPN

Marine
Updated 200am Thursday, May 15, 2025...Gusty north winds and steep seas will continue through tonight south of Cape Blanco. Seas diminish a bit Friday, then low pressure will bring continued gusty north winds and areas of fog and showers Friday night into Saturday. Increasing west-northwest swell is also expected this weekend. -BPN

NOAA Medford OR Office: Watches - Warnings - Advisories
OR...None.

CA...None.

PACIFIC COASTAL WATERS...Small Craft Advisory until 5am PDT Friday for PZZ356-376.