Forecast atlas / horizon ledger

Five horizons. No blurred promises.

Observed radar is not a forecast. A nowcast is not a 16-day outlook. Every lane keeps an explicit job, source, and release state.

Open map layersRead the scorecards
ObservedRight nowLive RadarNowcast0–120 minZenith FlowNear term1–12 hrZenith MiddleRegional1–72 hrZenith RegionalLong range3–16 dayZenith Global

Lane ledger

Availability is not promotion.

Map freshness is authoritative. A lane can exist in the catalog and still be held, disabled, or reference-only; the status below is the product truth.

01Live RadarRight nowMRMSReflectivity, storms, and current precipitation motion.Observed feed02Zenith Flow0–120 minpySTEPS nowcastShort-fuse precipitation extrapolation.Promotion held03Zenith Middle1–12 hrMesoscale guidanceStorm evolution and near-term hazards.Schedule disabled04Zenith Regional1–72 hrRegional blendTemperature, wind, precipitation, and daily planning.Schedule disabled05Zenith Global3–16 dayGlobal blendLong-range signal and broad pattern awareness.Reference lane

Delivery path

From atmosphere to map.

Forecast objects do not become user-facing layers by magic. Each artifact moves through a visible delivery path before the weather route can render it.

  1. 01

    Ingest

    Radar + forecast objects

  2. 02

    Compute

    Model artifacts

  3. 03

    Tile

    TiTiler raster path

  4. 04

    Map

    Weather route