In Vietnam, about five kilometers, there is a station. But the rain gauges are between 10 and 20 kilometers are a station. It was rainy network layout must always thicker air network or air pressure to increase the forecast figures. Even so it could not be filled, but only at a certain level. So the forecast requires more scientific forecasting advances and improvements. And scientists predict that so far has made more progress than in the past. Ie people used the numerical models to predict with high resolution, such as from 5 to 10 kilometers is a very high resolution. Without techniques that resolution remains as large as 50 to 100 kilometers, it is not enough to predict in detail to the remote areas. It's tough! Therefore, the central forecasting agency forecasts only broadcast, not to the provincial regions, communes or districts. The central forecast, the meteorological stations in the provinces must be more detailed forecasts because they have their local data. It is argued that, despite a lot of effort in forecasting and flood prevention in the mountains, but people are still surprised and passive, especially in the prevention of rain.
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