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ML prediction · online ridge model
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SPOT-1644 · ground truth
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Nick Nidzieko / UCSB
Scale factor corrected
ft
direction-bin lookup · R²=0.582
Harvest offshore swell
ft
CDIP 071 · 548m depth
Wind · Campus Point
MOP raw
before correction
Tide · MLLW
SPOT period
peak dir —
avg correction
over logged period
dominant swell
hours logged
Wave height — last 72h (feet)
daytime surf hours approx 6am–8pm PT
corrected forecast SPOT buoy (ground truth) MOP raw ML prediction
Harvest swell direction — last 72h
offshore direction at Harvest buoy (° true)
Dp (degrees)
Tide — Santa Barbara (feet, MLLW)
NOAA station 9411340
water level
Wind speed — last 72h (knots)
Campus Point · Open-Meteo
wind speed
Swell direction distribution — all data
Model accuracy vs SPOT-1644 ground truth
computing...
Scale factor corrected
mean abs error (ft)
bias —
R² —
ML prediction
mean abs error (ft)
bias —
R² —
MOP raw (baseline)
mean abs error (ft)
bias —
R² —
Predicted vs observed — scale factor
points on the 1:1 line = perfect prediction · daytime only
corrected 1:1 line
Predicted vs observed — ML model
points on the 1:1 line = perfect prediction · daytime only
ML pred 1:1 line
Rolling error — last 72h · corrected vs ML vs SPOT
lower = better · based on last 72h of paired observations
scale factor |error| ML |error| MOP raw |error|
Daytime error only 6am–8pm PT · when surfing actually happens
Scale factor · daytime MAE
mean abs error (ft)
bias —
— daytime obs
ML model · daytime MAE
mean abs error (ft)
bias —
— daytime obs
MOP raw · daytime MAE
mean abs error (ft)
bias —
baseline
computing daytime error...
Daytime error over time — last 72h
only hours between 6am–8pm PT included · null = nighttime (excluded)
scale factor |error| ML |error| MOP raw |error|
Recent forecasts last 20 hours
time (UTC) corrected SPOT buoy corr error ML pred ML error MOP raw Tp (s) wind tide bin confidence