GET /forecast/{event}/{window}/{lead}
—
—8 km cells · 384 km domain
+5 min
Forecast run = one model run: six 5-minute forecasts from the data available at that
time. The slider moves lead time inside a run, so only Bronte changes — it resolves
time within the half hour. LightningCast issues one probability covering 0–60 min (a longer
horizon than Bronte, but no sub-hour detail) and persistence holds the last observed frame,
because at issue time there is nothing newer. All three refresh at the next run.