Slide decks
Simulation exercise: three fictional cyclones
Forecast by forecast, which triggers activate: readiness then action (Cyclone Alpha), readiness then nothing (Bravo), and the observational trigger alone (Charlie). Forecasts are checked with the live monitoring code; includes the trigger emails each activation sends.
Present full screen in the browser · PDF and PowerPoint download /slides/simex/Oct 2026
2025–26 season: how close did the trigger come?
A five-minute walk through every RSMC Nadi forecast for cyclones Urmil (February) and Vaianu (April), and the observed rainfall, against the trigger thresholds.
Present full screen in the browser · PDF and PowerPoint download /slides/2025-26-season/Oct 2026
Methods
Wind-field calculation notes
How the 34-, 50- and 64-knot wind zones are built from RSMC Nadi forecasts (radius model fit, FMS approximation). Previously at the root of this site.
/methods/Framework documentExternal
Fiji National Anticipatory Action Framework for Tropical Cyclones 2025–2027, endorsed December 2025.
unocha.org