Coastal Waters Forecast
Issued by NWS Portland, OR

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Coastal Waters Forecast
National Weather Service Portland OR
928 PM PDT Tue Oct 17 2017

Coastal Waters from Cape Shoalwater Washington to Florence Oregon
and westward 60 NM

PZZ200-181045-
928 PM PDT Tue Oct 17 2017

.SYNOPSIS FOR SOUTHERN WASHINGTON AND NORTHERN OREGON COAST...
A 970 mb low off Haida Gwaii will send a frontal system across
the waters Wed and Thu. Southerly gales expected and seas in the
mid teens expected Wed afternoon and night. A strong westerly
swell will likely bring seas above 20 ft Thu afternoon through
Fri morning. Another strong strong front will arrive on Sat.

$$

PZZ250-181045-
Coastal waters from Cape Shoalwater WA to Cascade Head OR out
10 NM-
928 PM PDT Tue Oct 17 2017

...GALE WARNING IN EFFECT FROM 5 AM PDT WEDNESDAY THROUGH
WEDNESDAY EVENING...

.TONIGHT...E wind 5 kt, becoming S 10 to 15 kt after midnight.
Wind waves E 1 ft at 4 seconds, shifting to the S 3 ft at
4 seconds after midnight. NW swell 8 ft at 10 seconds.
.WED...S wind 25 to 30 kt with gusts to 35 kt, rising to 30 to
35 kt with gusts around 40 kt in the afternoon. Combined seas 9
ft dominant period 9 seconds, building to 15 ft dominant period
8 seconds late in the afternoon. Rain.
.WED NIGHT...S wind 30 to 35 kt with gusts around 45 kt, easing
to 25 to 30 kt with gusts to 35 kt after midnight. Combined
seas 16 ft dominant period 10 seconds. Rain.
.THU...S wind 20 to 25 kt, becoming SW 10 to 15 kt with gusts
to 20 kt in the afternoon. Wind waves SW 4 ft at 6 seconds. W
swell 12 ft at 10 seconds, building to 18 ft at 15 seconds in
the afternoon. Showers and a slight chance of tstms.
.THU NIGHT...SW wind 10 to 15 kt with gusts to 20 kt. Wind
waves SW 3 ft at 5 seconds. W swell 22 ft at 16 seconds.
Showers and a slight chance of tstms.
.FRI...W wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft.
W swell 18 ft. Showers likely.
.FRI NIGHT...S wind 10 to 15 kt. Wind waves 2 ft. W swell
14 ft. Rain.
.SAT...S wind 20 to 25 kt. Combined seas 16 ft.
.SUN...S wind 5 to 10 kt. Wind waves 2 ft. W swell 13 ft.

$$

PZZ270-181045-
Waters from Cape Shoalwater WA to Cascade Head OR from 10 to
60 NM-
928 PM PDT Tue Oct 17 2017

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT UNTIL 9 PM
PDT THIS EVENING...
...GALE WARNING IN EFFECT FROM 5 AM PDT WEDNESDAY THROUGH
WEDNESDAY EVENING...

.TONIGHT...SE wind 5 to 10 kt with gusts to 15 kt, becoming S
10 to 15 kt with gusts to 20 kt after midnight. Wind waves SE
2 ft at 4 seconds. W swell 8 ft at 11 seconds. Rain likely
after midnight.
.WED...S wind 25 to 30 kt with gusts to 40 kt. Combined seas
9 ft dominant period 10 seconds, building to 15 ft dominant
period 9 seconds in the afternoon. Rain.
.WED NIGHT...S wind 30 to 35 kt with gusts to 40 kt, becoming
SW 20 to 25 kt with gusts to 30 kt after midnight. Combined
seas 15 ft dominant period 11 seconds. Rain.
.THU...SW wind 20 to 25 kt. Wind waves SW 5 ft at 7 seconds. W
swell 12 ft at 11 seconds, building to 20 ft at 16 seconds in
the afternoon. Showers and a slight chance of tstms.
.THU NIGHT...SW wind 15 to 20 kt with gusts to 25 kt. Wind
waves SW 4 ft at 6 seconds. W swell 22 ft at 17 seconds.
Showers and a slight chance of tstms.
.FRI...W wind 15 to 20 kt with gusts to 25 kt. Wind waves 4 ft.
W swell 18 ft. Showers likely.
.FRI NIGHT...SW wind 10 to 15 kt with gusts to 20 kt. Wind
waves 3 ft. W swell 14 ft. Rain.
.SAT...SW wind 25 to 30 kt. Combined seas 17 ft.
.SUN...SW wind 10 to 15 kt. Wind waves 3 ft. W swell 13 ft.

$$

PZZ255-181045-
Coastal waters from Cascade Head to Florence OR out 10 NM-
928 PM PDT Tue Oct 17 2017

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY MORNING...

.TONIGHT...SE wind 5 to 10 kt, becoming S 10 to 15 kt after
midnight. Wind waves SE 2 ft at 4 seconds. W swell 8 ft at
11 seconds.
.WED...S wind 15 to 20 kt with gusts to 25 kt, rising to 20 to
25 kt with gusts to 35 kt in the afternoon. Combined seas 12 ft
dominant period 9 seconds in the afternoon. Chance of rain.
.WED NIGHT...S wind 25 to 30 kt. Gusts to 35 kt, becoming 40 kt
after midnight. Combined seas 15 ft dominant period 11 seconds.
Rain.
.THU...S wind 20 to 25 kt with gusts to 30 kt, becoming SW
15 to 20 kt in the afternoon. Wind waves SW 5 ft at 7 seconds.
W swell 11 ft at 11 seconds, building to 19 ft at 16 seconds
late in the afternoon. Rain.
.THU NIGHT...SW wind 10 to 15 kt. Gusts to 20 kt after
midnight. Wind waves SW 3 ft at 5 seconds. W swell 21 ft at
17 seconds. Showers and a slight chance of tstms.
.FRI...SW wind 10 to 15 kt with gusts to 20 kt. Wind waves
3 ft. W swell 18 ft. Showers.
.FRI NIGHT...S wind 10 to 15 kt with gusts to 20 kt. Wind waves
3 ft. W swell 14 ft. Rain.
.SAT...S wind 20 to 25 kt. Combined seas 16 ft.
.SUN...S wind 5 to 10 kt. Wind waves 2 ft. W swell 13 ft.

$$

PZZ275-181045-
Waters from Cascade Head to Florence OR from 10 to 60 NM-
928 PM PDT Tue Oct 17 2017

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY MORNING...

.TONIGHT...E wind 5 to 10 kt, becoming S 10 to 15 kt after
midnight. Wind waves E 2 ft at 4 seconds, shifting to the S
3 ft at 4 seconds after midnight. W swell 8 ft at 11 seconds.
.WED...S wind 20 to 25 kt with gusts to 30 kt, rising to 25 to
30 kt with gusts to 35 kt in the afternoon. Combined seas 13 ft
dominant period 9 seconds in the afternoon. Chance of rain.
.WED NIGHT...S wind 25 to 30 kt with gusts to 40 kt. Combined
seas 15 ft dominant period 11 seconds. Rain.
.THU...SW wind 20 to 25 kt. Wind waves SW 5 ft at 7 seconds. W
swell 11 ft at 11 seconds, building to 19 ft at 16 seconds in
the afternoon. Showers.
.THU NIGHT...SW wind 15 to 20 kt, rising to 20 to 25 kt after
midnight. Wind waves SW 4 ft at 6 seconds. W swell 21 ft at
17 seconds. Showers and a slight chance of tstms.
.FRI...W wind 20 to 25 kt. Wind waves 4 ft. W swell 18 ft.
Showers likely.
.FRI NIGHT...SW wind 20 to 25 kt. Wind waves 4 ft. W swell
14 ft. Rain.
.SAT...S wind 25 to 30 kt. Combined seas 16 ft.
.SUN...SW wind 5 to 10 kt. Wind waves 2 ft. W swell 13 ft.

$$

PZZ210-181045-
Columbia River Bar-
928 PM PDT Tue Oct 17 2017

...SMALL CRAFT ADVISORY FOR ROUGH COLUMBIA RIVER BAR IN EFFECT
FROM 1 AM TO 6 AM PDT WEDNESDAY...
...SMALL CRAFT ADVISORY FOR ROUGH COLUMBIA RIVER BAR IN EFFECT
FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT...

.IN THE MAIN CHANNEL...Combined seas 6 TO 8 FT building TO
between 10 and 12 FT Wednesday afternoon. However, seas will
temporarily build to around 11 FT with breakers possible during
the ebb around 415 AM Wednesday, and to around 15 FT with
breakers likely during the strong ebb around 445 PM Wednesday.

$$


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