By using the objective similaritymethod, A short - range forecastmodel of hail in Gannan Plateau was comp leted. The system comp iled by four parts, including a history database of hail, similar case and judgment, viewing history weathermap and comparing with intraday actually happening, adding new hail data. The result shows that the model has a good effect in short - range forecast of hail, and it is an effective method of short - range forecast.
