Abstract: The traditional grey prediction model got good results for a stable medium and long sequence, but not good for a variable medium and long sequence, such as severe drought occurrence. The center approach grey GM(1,1)model was established for prediction of severe drought occurrence. Prediction results showed that this model was valid for prediction of the severe drought occurrence in Zhejiang Province.

Key words: Zhejiang Province, Zhejiang Province, Severe Drought, GM(1, 1)prediction model, Forecast