Cold Wave Probability

Cold wave duration hazard refers to the length of days where the daily minimum temperature is less than 5℃ from a centered six day average. The hazard has 3 severity levels (Low, Moderate, High). Low cold wave hazard intensity corresponds to 5 and 6 days, moderate to 7 and 8 days, while high to more than 9 days. For each of the severity levels, cold wave duration hazard is calculated for each of the 12 calendar months. The returned values of the cold wave duration hazard are probabilities of exceeding the above duration thresholds per severity class per calendar month.