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Knappa, OR - Knappa Slough Coastal Forecast

FZUS56 KPQR 091004
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Coastal Waters Forecast
National Weather Service Portland OR
204 AM PST Thu Jan 9 2025

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

PZZ200-100100-
204 AM PST Thu Jan 9 2025

.SYNOPSIS FOR THE SOUTHERN WASHINGTON AND NORTHERN OREGON COAST...
Light offshore breezes today under high pressure. A front crosses
the waters late tonight, with strong northwest breezes developing
behind the front Friday into Saturday. An arriving swell will push
seas above 10 ft Friday into the weekend.

$$

PZZ251-100100-
Coastal waters from Cape Shoalwater WA to Cape Falcon OR out
10 NM-
204 AM PST Thu Jan 9 2025

.TODAY...E wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 2 ft
at 4 seconds and W 5 ft at 14 seconds.
.TONIGHT...SE wind 5 to 10 kt, becoming S 15 to 20 kt with gusts
up to 25 kt after midnight. Seas around 4 ft, building to 5 to
8 ft after midnight. Wave Detail: S 3 ft at 6 seconds and W 7 ft
at 17 seconds. Rain after midnight.
.FRI...NW wind 15 to 20 kt with gusts up to 25 kt. Seas 9 to
13 ft, building to 12 to 14 ft in the afternoon. Wave Detail: NW
5 ft at 7 seconds and W 13 ft at 17 seconds. Rain, mainly in the
morning.
.FRI NIGHT...NW wind 15 to 20 kt with gusts up to 25 kt. Seas
11 to 14 ft. Wave Detail: NW 4 ft at 6 seconds and W 13 ft at
15 seconds. A chance of rain in the evening.
.SAT...NW wind 15 to 20 kt, easing to 10 to 15 kt in the
afternoon. Seas 9 to 12 ft. Wave Detail: NW 4 ft at 6 seconds and
W 12 ft at 14 seconds.
.SAT NIGHT...NW wind 10 to 15 kt with gusts up to 20 kt. Seas
7 to 10 ft. Wave Detail: NW 3 ft at 5 seconds and W 10 ft at
12 seconds.
.SUN...N wind 5 to 10 kt. Seas 6 to 9 ft, subsiding to 6 to 7 ft
in the afternoon. Wave Detail: N 3 ft at 4 seconds and W 8 ft at
12 seconds.
.SUN NIGHT...NE wind 5 to 10 kt. Seas 7 to 10 ft. Wave Detail: NW
10 ft at 17 seconds.
.MON...NE wind 5 to 10 kt. Seas 7 to 10 ft, subsiding to 6 to
8 ft in the afternoon. Wave Detail: W 9 ft at 15 seconds.
.MON NIGHT...NE wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: NE
2 ft at 4 seconds and W 8 ft at 15 seconds.

$$

PZZ252-100100-
Coastal waters from Cape Falcon to Cape Foulweather OR out 10 NM-
204 AM PST Thu Jan 9 2025

.TODAY...E wind 5 to 10 kt, becoming NE this afternoon. Seas 4 to
5 ft. Wave Detail: W 5 ft at 14 seconds.
.TONIGHT...SE wind 5 to 10 kt, becoming S 10 to 15 kt with gusts
up to 20 kt after midnight. Seas around 4 ft, building to 5 to
8 ft after midnight. Wave Detail: S 3 ft at 4 seconds and W 7 ft
at 17 seconds. Rain after midnight.
.FRI...NW wind 15 to 20 kt with gusts up to 25 kt. Seas 8 to
11 ft, building to 11 to 13 ft in the afternoon. Wave Detail: NW
4 ft at 6 seconds and W 12 ft at 17 seconds. Rain, mainly in the
morning.
.FRI NIGHT...NW wind 15 to 20 kt with gusts up to 25 kt. Seas
10 to 13 ft. Wave Detail: NW 4 ft at 5 seconds and W 12 ft at
15 seconds. A chance of rain.
.SAT...NW wind 10 to 15 kt with gusts up to 20 kt. Seas 10 to
12 ft, subsiding to 9 to 10 ft in the afternoon. Wave Detail: NW
3 ft at 5 seconds and W 11 ft at 14 seconds.
.SAT NIGHT...NW wind 10 to 15 kt with gusts up to 20 kt. Seas
8 to 10 ft. Wave Detail: NW 3 ft at 4 seconds and W 10 ft at
12 seconds. A chance of rain after midnight.
.SUN...N wind 10 to 15 kt. Seas 7 to 9 ft, subsiding to 6 to 7 ft
in the afternoon. Wave Detail: N 3 ft at 4 seconds and W 8 ft at
12 seconds. A chance of rain in the morning.
.SUN NIGHT...NE wind 5 to 10 kt. Seas 7 to 10 ft, building to
9 to 10 ft after midnight. Wave Detail: W 10 ft at 17 seconds.
.MON...NE wind 5 to 10 kt. Seas 8 to 10 ft, subsiding to 7 to
8 ft in the afternoon. Wave Detail: W 9 ft at 16 seconds.
.MON NIGHT...NE wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: NE
2 ft at 4 seconds and W 8 ft at 15 seconds.

$$

PZZ253-100100-
Coastal waters from Cape Foulweather to Florence OR out 10 NM-
204 AM PST Thu Jan 9 2025

.TODAY...E wind 5 to 10 kt, becoming NE late. Seas 4 to 6 ft.
Wave Detail: W 6 ft at 14 seconds.
.TONIGHT...E wind around 5 kt, veering to S after midnight. Seas
4 to 5 ft, building to 6 to 7 ft after midnight. Wave Detail: S
2 ft at 4 seconds and W 7 ft at 17 seconds. Rain after midnight.
.FRI...W wind 10 to 15 kt, veering to NW in the afternoon. Seas
7 to 10 ft, building to 9 to 11 ft in the afternoon. Wave Detail:
NW 3 ft at 5 seconds and W 11 ft at 17 seconds. Rain, mainly in
the morning.
.FRI NIGHT...NW wind 10 to 15 kt with gusts up to 20 kt. Seas
9 to 11 ft. Wave Detail: NW 3 ft at 5 seconds and W 11 ft at
15 seconds.
.SAT...N wind 10 to 15 kt. Seas 9 to 10 ft. Wave Detail: N 3 ft
at 4 seconds and W 10 ft at 14 seconds.
.SAT NIGHT...N wind 5 to 10 kt, rising to 10 to 15 kt after
midnight. Seas 7 to 9 ft. Wave Detail: N 3 ft at 4 seconds and W
9 ft at 12 seconds.
.SUN...N wind 5 to 10 kt. Seas 6 to 9 ft, subsiding to 6 to 7 ft
in the afternoon. Wave Detail: N 3 ft at 4 seconds and NW 7 ft at
12 seconds.
.SUN NIGHT...NE wind 5 to 10 kt. Seas 7 to 10 ft, building to
9 to 10 ft after midnight. Wave Detail: W 9 ft at 17 seconds.
.MON...NE wind 5 to 10 kt. Seas 7 to 9 ft. Wave Detail: NE 2 ft
at 4 seconds and W 9 ft at 16 seconds.
.MON NIGHT...NE wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: NE
2 ft at 4 seconds and W 7 ft at 14 seconds.

$$

PZZ271-100100-
Waters from Cape Shoalwater WA to Cape Falcon OR from 10 to 60 NM-
204 AM PST Thu Jan 9 2025

.TODAY...E wind 5 to 10 kt, veering to SE late. Seas 4 to 5 ft.
Wave Detail: E 2 ft at 4 seconds and W 5 ft at 14 seconds.
.TONIGHT...S wind 10 to 15 kt, becoming SW 15 to 20 kt with gusts
up to 25 kt after midnight. Seas 4 to 6 ft, building to 6 to 9 ft
after midnight. Wave Detail: SW 3 ft at 6 seconds and W 7 ft at
16 seconds. Rain after midnight.
.FRI...NW wind around 20 kt with gusts up to 25 kt. Seas 9 to
13 ft, building to 14 ft in the afternoon. Wave Detail: NW 5 ft
at 7 seconds and W 13 ft at 16 seconds. Rain, mainly in the
morning.
.FRI NIGHT...NW wind 15 to 20 kt with gusts up to 25 kt. Seas
13 to 14 ft. Wave Detail: NW 5 ft at 7 seconds and W 13 ft at
15 seconds.
.SAT...NW wind around 15 kt with gusts up to 20 kt. Seas 10 to
13 ft. Wave Detail: NW 4 ft at 6 seconds and W 12 ft at
13 seconds.
.SAT NIGHT...NW wind around 15 kt with gusts up to 20 kt. Seas
8 to 11 ft. Wave Detail: NW 4 ft at 5 seconds and W 10 ft at
12 seconds.
.SUN...N wind 10 to 15 kt. Seas 6 to 9 ft. Wave Detail: NW 4 ft
at 5 seconds and NW 8 ft at 12 seconds.
.SUN NIGHT...N wind 5 to 10 kt. Seas 7 to 10 ft, building to 9 to
11 ft after midnight. Wave Detail: NE 2 ft at 4 seconds and W
11 ft at 17 seconds.
.MON...NE wind 5 to 10 kt. Seas 8 to 10 ft, subsiding to 7 to
8 ft in the afternoon. Wave Detail: NE 2 ft at 4 seconds and W
10 ft at 15 seconds.
.MON NIGHT...NE wind around 10 kt. Seas 7 to 9 ft. Wave Detail:
NE 2 ft at 4 seconds and W 9 ft at 15 seconds.

$$

PZZ272-100100-
Waters from Cape Falcon to Cape Foulweather OR from 10 to 60 NM-
204 AM PST Thu Jan 9 2025

.TODAY...E wind 5 to 10 kt, veering to SE late. Seas 4 to 5 ft.
Wave Detail: W 5 ft at 14 seconds.
.TONIGHT...S wind 5 to 10 kt, becoming SW 10 to 15 kt with gusts
up to 25 kt after midnight. Seas 4 to 5 ft, building to 6 to 9 ft
after midnight. Wave Detail: SW 3 ft at 5 seconds and W 8 ft at
16 seconds. Rain after midnight.
.FRI...NW wind 15 to 20 kt with gusts up to 25 kt. Seas 9 to
13 ft, building to 12 to 14 ft in the afternoon. Wave Detail: NW
5 ft at 6 seconds and W 12 ft at 17 seconds. Rain, mainly in the
morning.
.FRI NIGHT...NW wind 15 to 20 kt with gusts up to 25 kt. Seas
10 to 13 ft. Wave Detail: NW 4 ft at 6 seconds and W 12 ft at
15 seconds.
.SAT...NW wind 10 to 15 kt with gusts up to 20 kt. Seas 10 to
12 ft. Wave Detail: NW 4 ft at 5 seconds and W 11 ft at
14 seconds.
.SAT NIGHT...NW wind around 15 kt with gusts up to 20 kt. Seas
9 to 10 ft. Wave Detail: NW 3 ft at 5 seconds and W 10 ft at
12 seconds.
.SUN...N wind 10 to 15 kt. Seas 6 to 9 ft. Wave Detail: N 3 ft at
5 seconds and NW 8 ft at 12 seconds.
.SUN NIGHT...N wind 10 to 15 kt. Seas 7 to 10 ft, building to
9 to 11 ft after midnight. Wave Detail: N 2 ft at 4 seconds and W
11 ft at 17 seconds.
.MON...NE wind around 10 kt. Seas 8 to 10 ft, subsiding to 7 to
8 ft in the afternoon. Wave Detail: NE 2 ft at 4 seconds and W
10 ft at 16 seconds.
.MON NIGHT...NE wind around 10 kt. Seas 7 to 8 ft. Wave Detail:
NE 2 ft at 4 seconds and W 8 ft at 15 seconds.

$$

PZZ273-100100-
Waters from Cape Foulweather to Florence OR from 10 to 60 NM-
204 AM PST Thu Jan 9 2025

.TODAY...NE wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft
at 15 seconds.
.TONIGHT...NW wind around 5 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 5 to 6 ft, building to
6 to 9 ft after midnight. Wave Detail: SW 2 ft at 4 seconds and W
8 ft at 16 seconds. Rain after midnight.
.FRI...NW wind 15 to 20 kt with gusts up to 25 kt. Seas 9 to
12 ft, building to 11 to 13 ft in the afternoon. Wave Detail: NW
4 ft at 6 seconds and W 12 ft at 17 seconds. Rain, mainly in the
morning.
.FRI NIGHT...NW wind 10 to 15 kt with gusts up to 20 kt. Seas
9 to 12 ft. Wave Detail: NW 4 ft at 5 seconds and W 12 ft at
15 seconds.
.SAT...N wind around 15 kt with gusts up to 20 kt. Seas 9 to
11 ft. Wave Detail: N 3 ft at 5 seconds and W 10 ft at
14 seconds.
.SAT NIGHT...N wind around 15 kt with gusts up to 20 kt. Seas
8 to 9 ft. Wave Detail: N 3 ft at 5 seconds and W 9 ft at
12 seconds.
.SUN...N wind 10 to 15 kt. Seas 6 to 9 ft. Wave Detail: N 3 ft at
5 seconds and NW 8 ft at 12 seconds.
.SUN NIGHT...N wind 10 to 15 kt. Seas 7 to 10 ft, building to
9 to 11 ft after midnight. Wave Detail: N 2 ft at 4 seconds and
NW 11 ft at 17 seconds.
.MON...NE wind 10 to 15 kt. Seas 7 to 10 ft. Wave Detail: NE 2 ft
at 4 seconds and NW 10 ft at 16 seconds.
.MON NIGHT...NE wind 10 to 15 kt. Seas 7 to 9 ft. Wave Detail: NE
2 ft at 4 seconds and W 8 ft at 15 seconds.

$$

PZZ210-100100-
Columbia River Bar-
204 AM PST Thu Jan 9 2025

.IN THE MAIN CHANNEL...

.GENERAL SEAS...4 to 6 ft today building to 8 to 10 ft Friday
morning.

.FIRST EBB...Ebb current of 2.5 kt at 1202 AM Thursday. Seas 6
ft.

.SECOND EBB...Ebb current of 5.56 kt at 1242 PM Thursday. Seas 7
ft.

.THIRD EBB...Ebb current of 2.41 kt at 112 AM Friday. Seas 7 to 8
ft.

$$


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