Accra now has a flood early warning system that is switched on and working — but officials are urging caution before it is used to drive real emergency decisions.
The Flood Early Warning System for Accra (FEWS-Accra) is currently generating updated rainfall forecasts every 10 minutes, according to a status update issued on June 30, 2026. The platform is live, but technical teams say it is still mid-way through a validation process before it can be fully trusted for flood response operations.
What the System Actually Does
FEWS-Accra runs on Delft-FEWS, an integrated forecasting platform that pulls in weather and hydrological data, models flood scenarios, and fires off automated alerts. It generates forecasts at a two-kilometre spatial resolution, drawing on satellite data from the Meteosat Third Generation constellation, and it gives emergency responders a forecasting lead time of between two and three hours — enough time, in theory, to mobilise before floodwaters hit.
The system combines four components: satellite-based rainfall nowcasting, hydrological and hydraulic flood modelling, neighbourhood-level risk communication, and stakeholder coordination. Ground-level infrastructure supporting it includes additional automatic weather stations, telemetry rain gauges, and ultrasonic water-level sensors installed across the Greater Accra Region.
Still Under Testing
Being operational is not the same as being ready. Technical teams from the implementing agencies are still running threshold tests, sensor and data transmission checks, last-mile communication assessments, and simulation drills before the system goes fully live.
In May 2026, a limited simulation exercise was held at the Ga East District Assembly to test how fast NADMO — the National Disaster Management Organisation — could respond to an incoming flood alert. That drill was one of several exercises designed to stress-test the system's real-world performance.
Back in November 2025, project officials also sat down with selected media organisations to work out how warning messages could reach the public faster and more effectively. Those conversations have since shaped decisions on communication channels, with automated push and pull SMS alert systems now among the options under review.
"So far, the results are promising and we hope to set up a platform for the editors of the various media houses to support in the dissemination of warning alerts," the June 30 status update stated.
Who is Behind It
FEWS-Accra is a collaborative effort, brought together under the Greater Accra Resilient Integrated Development (GARID) Project — a World Bank-funded initiative. The implementing agencies are the Ghana Hydrological Authority, the Ghana Meteorological Agency, NADMO, and the Water Resources Commission.
One unresolved question that'll matter once the World Bank money runs out: which of those agencies picks up the bill for running the SMS messaging platform going forward. Officials say discussions are underway, but no decision has been announced.
A System Born From Disaster
The project traces its origins directly to the June 3, 2015 floods, which killed 159 people in Accra and exposed how unprepared the city was to anticipate and respond to extreme rainfall. That catastrophe made the case for a dedicated, technology-driven early warning system impossible to ignore.
More than a decade on, the infrastructure is finally in place. Whether it performs when Accra's next major flood arrives depends on how well the remaining validation exercises go — and on the broader question of long-term funding once international project support eventually ends. For a city that floods with troubling regularity, getting this right is not optional.