Drought Probability

Drought hazard refers to the consecutive dry days that might occur during seasons. Dry days are the days at which rainfall height less than 0.1mm is measured. Drought hazard has four severity levels (Low, Moderate, High, Extreme). Low drought hazard corresponds to 30 to 50 days without rain, moderate to 50 to 75 days without rain, high to 75 to 80 days without rain, and extreme to more than 80 days. For each of the severity levels, drought hazard is calculated for each of the 4 seasons. The returned values of the drought hazard are probabilities of exceeding the above duration thresholds per severity class per calendar month.