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Wednesday, October 21
Pick a stretch of steady current, chum one spot and fish it — don't move around without reason.
Michigan — Wednesday, October 21
The bite is strong — fish are active. Pressure is rising — activity tends to be more subdued. Peak 07:00–09:00 and 17:00–19:00.
The computed water temperature is around 51 °F — inside the 36–57 °F comfort range for Whitefish, so baseline activity is high.
Whitefish works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.
Pressure is flat: it moves no more than 0.03 inHg over the day, so the weather isn't shifting today's bite.
October is peak season for Whitefish here.
These are the same values the bite curve above was computed from. How the forecast works
Cloudy · feels like +56°
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 fieldG1 geomagnetic storm, Kp 4.7
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?