Given the increasing severity of Sri Lanka's weather-related disasters such as heavy rainfall and droughts, the additional grant aid is expected to contribute to the establishment of the Doppler Weather Radar Network, furthering efforts to mitigate the impact of meteorological disasters, said the Embassy of Japan in Colombo. In an effort to enhance Sri Lanka's short-term weather forecasting capabilities and mitigate the impact of meteorological disasters, the Japanese government has been supporting the establishment of a Doppler Weather Radar Network since June 30, 2017.ĭue to the current economic crisis, an additional grant aid has been provided for this project. 335 million), additional grant for The Project for the Establishment of a Doppler Weather Radar Network. 435 million), is designated for enhancing the North-East Fisheries infrastructure, while the second grant, totaling JPY 160 million (approximately Rs. The first grant, amounting to JPY 200 million (approximately Rs. Siriwardana, Secretary, Ministry of Finance, Economic Stabilization and National Policies, representing the respective governments. The Exchange of Notes on the Japanese Grant Aid for 2 projects were signed by MIZUKOSHI Hideaki, Ambassador of Japan to Sri Lanka and K. In addition, it will provide a JPY 200 Million-Grant Assistance to boost North-East fisheries infrastructure. 300 Million (JPY 160 Million) for the Establishment of a Doppler Weather Radar Network. If the radar animation of the last hours shows local thunderstorms or precipitation cells forming and disappearing in an irregular manner, then the forecast is not vey accurate.Colombo (News 1st): Japan will be providing over Rs. The forecast works very well when weather fronts or large organized precipitation structures are moving regularly, without disappearing or being created. Real weather is more complex than just the displacement of existing precipitation cells. Longer forecasts are not possible, as new precipitation cells are developing or existing ones are disappearing within a short time. This so called precipitation nowcast is the most accurate precipitation forecast possible but the forecast horizon is limited to about an hour. The rain/snow forecast is computed by estimating the movement of precipitation cells observed by radar and extrapolating this movement into the future. Moreover, some countries do not operate a weather radar network, and in those countries satellite data is used to estimate rainfall, which is less accurate than a realtime weather radar.Ĭonnecticut: How accurate is the radar based forecast? Note that lightning is not shown on the forecast, as it cannot be predicted. Light blue indicates drizzle, blue a medium intensity, and red and yellow indicate very strong precipitation, usually associated with thunderstorms.Ĭurrent lightning strikes are marked with small orange dots on the map (Europe only). The different colours indicate the intensity of rainfall or snowfall. The radar map is updated every 5 minutes with a new radar observation. The weather radar ( Connecticut) shows where it is currently raining or snowing.
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