Observed rainfall from live NRC telemetry tested against real HIRDS v4 design depths — peak ARI by duration and gauge, with the current event tracked as it accumulates toward the 1-in-10 yr qualifying line.
Live MET Norway forecast rainfall screened into flood and slip exposure across the network for the next 120 hours — ranked links with their drivers, and a mechanism toggle between surface flooding and slope instability.
Slope instability separated from surface flooding. Long-memory antecedent index drives the colouring and the ranked list; the lag between the two mechanisms is made legible — flood peaks with the rain band, slip keeps climbing for a further day and decays over several.
The differentiator. Forecast-red links populate the routing tool's existing closure engine; it routes detours and reports what severs and what isolates. User-initiated by design — a button you press, never an automatic display, because auto-closure would read as a prediction the screening cannot support.
Scoped as a watch list, not a scour model: bridges on catchments under a severe forecast, cross-referenced with known scour history and the weight-restriction schedule. Hakaru writes its own first entry — load-restricted since May 2026 and already on a flood site.
The week-after-the-storm artefact: rainfall, peak ARI by gauge and duration, antecedent state and event window, formatted for an NZTA Emergency Works application. Reuses the run archive, needs no new analysis, and replaces work the council currently does by hand.
Converts the product from a model's opinion into what has actually happened here before. Damage register and the 10-year WC141 claim record geocoded to links, activating w_fail so rankings cite the council's own cost history.
Ford crossings as their own instrument. Each ford keyed to its catchment's live rainfall and antecedent state, reporting passable / marginal / impassable rather than a rainfall depth — the question a grader driver or a school bus operator actually asks.
The other way this network fails. Shaking intensity against the same road links — GeoNet ShakeMap on an event, liquefaction and slope susceptibility as standing layers, feeding the same closure engine so a quake scenario routes detours exactly as a storm does.
The join that turns the map from illustrative to real: forecast.json v0.1, 29 timesteps, flood and slip scores on 1,200–1,600 selected links, published as a small separate file so the base tool stays cached and the forecast refreshes alone.