Presque Isle Light
Live NOAA readings, Lake Huron, MI, station PRIM4
Presque Isle Light: reading the meter…
All readings
Knots, newest on the right, never interpolated — a gap is a gap in the record.
PRIM4, the morning after, Mon 12 Oct
What last night's forecast was worth
Yesterday the Presque Isle Light meter topped out at 13 kt at 3 pm. The night before, NWS said 11 kt, Forecast Lab — what Premium is served — 11.2, the other 4 models 9.5–15.4 kt.
How this was measured
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.