Sturgeon Point Light
Live NOAA readings, Lake Michigan, MI, station SPTM4
Sturgeon Point Light has not reported in 2 hours. Its last reading was 1 kt from the NW.
Measured at NOAA station SPTM4. Readings are shown in knots, newest on the right, and are never interpolated — a gap here is a gap in the record.
SPTM4, the morning after, Sun 27 Sep
What last night's forecast was worth
Yesterday the Sturgeon Point Light meter topped out at 12.1 kt at noon. The night before, NWS had 9 kt, the corrected NWS — what Premium is served — 6. The other 4 models ranged 8.2–10.6 kt.One day is an illustration, not a record — a model that reads low every day will still land one. The number that means anything is the scored one over 90 days, in how our calls are graded.
Each model row is the highest wind it forecast for the 6am–6pm window at this meter, taken from the freshest run that existed before midnight the night before — between 10 and 23 hours ahead, depending on the hour. A model with no run in that window shows no call; it is never filled in from a closer-range forecast. Raw rows are the provider's own numbers; NWS + this meter's bias is that forecast shaded by this station's own measured error. That correction is Premium: a Premium rider is served the corrected row, and a free or signed-out rider is served the raw NWS row above it. The meter's figure is the strongest reading of each hour from this station's stored observations. Hours over your floor are counted from those readings alone; rideable is the nightly scorer's verdict and also weighs gust, direction and waves, so the two numbers are not the same measurement and are never added. Knots throughout.