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Sea Northwest Pass (Washington) — a popular fishing spot. About 68 ha in area. This is a sea water — its bite forecast is a marine one, computed apart from rivers and lakes. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.
Other nearby waters
The shoreline is moderately indented: bays and points alternate with even stretches. Larger than 16 of the 20 waters nearby.
Washington: the months when each species peaks and when it goes quiet. The current month is outlined.
| Fish | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steelhead | peak | peak | active | fair | active | peak | peak | peak | active | peak | peak | peak |
| Lingcod | slow | fair | active | peak | peak | active | active | active | active | active | fair | slow |
| Rockfish | slow | fair | active | peak | peak | active | active | active | active | active | fair | slow |
| Flounder | slow | slow | fair | active | active | active | active | peak | peak | active | fair | slow |
| Pacific halibut | slow | fair | active | peak | peak | fair | fair | active | active | active | fair | slow |
| Chinook salmon | slow | slow | slow | active | peak | peak | peak | active | fair | slow | slow | slow |
| Coho salmon | slow | slow | slow | slow | fair | active | peak | peak | peak | active | slow | slow |
Wednesday, October 21
Look for structure — reefs, flats, channel edges; work them slowly near the bottom.
Northwest Pass — Wednesday, October 21
The bite is moderate — fish feed in short bursts. Pressure is dropping — this usually boosts the bite. Peak 07:00–09:00 and 18:00–19:00.
The computed water temperature is around 57 °F — inside the 43–59 °F comfort range for Coho salmon, so baseline activity is high.
Coho salmon works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.
Pressure is dropping 0.12 inHg over the day — fish are usually more active ahead of a weather change.
One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.
October is an active season for Coho salmon here.
These are the same values the bite curve above was computed from. How the forecast works
Cloudy · feels like +57°
The day is 3 min shorter than yesterday.
Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.
Geomagnetic fieldquiet, Kp 3.7
Kp index — NOAA forecast. Not part of the bite score: catches show no link between geomagnetic storms and the bite.
The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.
What are solunar periods?Look for structure — reefs, flats, channel edges; work them slowly near the bottom.
Northwest Pass — Wednesday, October 21
The bite is moderate — fish feed in short bursts. Pressure is dropping — this usually boosts the bite. Peak 07:00–09:00 and 18:00–19:00.