Hazard risk has become an important issue because global warming will lead to an increased risk of extreme weather and climate events. Based on the daily snow precipitation of 63 cities and counties in Heilongjiang Province, China from 1961 to 2015, the probability of each level of snowstorm was calculated based on information diffusion theory, and a hazard index model was established using snowstorm probability and the amount of snow precipitation as two hazard-inducing indicators of snowstorm. Next, hazard assessment and regionalization of snowstorms was performed for Heilongjiang Province from 1961 to 2015. The results showed that under the background of global warming, the probability of moderate snowstorm, heavy snowstorm, and severe snowstorm in Heilongjiang Province increased over time. There was a particularly significant increase for moderate snowstorms at a rate of 20%/10a; moderate snowstorms, heavy snowstorms, and severe snowstorms had a 3-year, 4-year, and 11-year return period, respectively. The precipitation level of each snowstorm increased over the decades especially for the precipitation in moderate snowstorms (29 mm/10a). The precipitation of each level of snowstorm has increased significantly since the beginning of the 21st century. In addition, the hazard of each level of snowstorm and the comprehensive hazard of snowstorms all increased significantly with time; the most rapid increase was due to heavy snowstorms at a rate of 0.65/10a. The comprehensive hazard of moderate snowstorms increased at a rate of 1.46/10a. The comprehensive hazard of snowstorm was the highest in the southeast of Heilongjiang followed sequentially by the west and the central region. The hazard of each level of snowstorm was high in the southeast and lowest in the northwest for moderate snowstorms and heavy snowstorms. There were high hazards for severe snowstorms in the northwest. The light-/low-risk areas of all levels of snowstorm were concentrated in the central region. The probability of moderate and heavy snowstorms was the highest in the southeast region followed by the northwest and the central region. The precipitation from moderate and heavy snowstorms was the highest in the southeast followed by the central region and the northwest region. For severe snowstorms, there was a difference in the distribution between the probability and the precipitation, i.e., the probability was the highest in the northwest region, followed sequentially by the southeast and the central regions. The precipitation was relatively high in the southeast and northwest regions but low in the central and northern regions. The distribution of the probability, precipitation, and hazard of each level of snowstorm as well as the distribution of the comprehensive hazard all had the following patterns: The high-value areas gradually expanded with decades while the low-value areas gradually shrank. For the comprehensive hazard of snowstorm, the high-risk areas increased by 30.7% from 1960s to 2010s as opposed to the 38.9% reduction of low-risk areas. In particular, the high-hazard and low-hazard areas of heavy snowstorms underwent the largest changes over the decades with the former increasing by 37.4% and the latter decreasing by 28.5%.

危害风险已成为一个重要问题，因为全球变暖将导致极端天气和气候事件的风险增加。基于1961-2015年黑龙江省63个市县的日降雪量，利用信息扩散理论计算了各级暴风雪发生的概率，并利用暴风雪发生的概率和数量建立了灾害指数模型。降雪是暴风雪的两个致灾指标。接下来，对1961年至2015年黑龙江省的暴风雪进行了危害评估和分区。结果表明，在全球变暖的背景下，黑龙江省中度暴雪，大雪暴和重雪暴的概率随时间增加。中度暴风雪以20％/ 10a的速度增长尤为明显；中度暴风雪，重度暴风雪和重度暴风雪分别具有3年，4年和11年的恢复期。在过去的几十年中，每次暴风雪的降水量都有所增加，特别是在中等暴风雪（29 mm / 10a）中。自21世纪初以来，每个暴风雪的降水量均显着增加。此外，每个级别的暴风雪危害和全面的暴风雪危害都随着时间的推移而显着增加；增长最快的是由于暴风雪以0.65 / 10a的速度发生。中度暴风雪的综合危害以1.46 / 10a的速度增加。暴风雪的综合危害在黑龙江东南部最高，其次是西部和中部地区。在中度暴风雪和大雪暴中，每级暴风雪的危害在东南部较高，在西北部最低。西北地区存在严重暴风雪的高风险。各级暴风雪的轻/低风险地区集中在中部地区。东南部地区中，大雪暴的可能性最高，其次是西北部和中部地区。中，强暴风雪的降雨量最高，在东南部，其次是中部地区和西北部。对于严重的暴风雪，概率和降水之间的分布存在差异，即 概率最高的是西北地区，其次是东南和中部地区。东南部和西北部地区的降水相对较高，而中部和北部地区的降水较低。每个暴风雪的概率，降水和危害的分布以及综合危害的分布都具有以下模式：高值地区逐渐扩大了数十年，而低值地区逐渐缩小。由于暴风雪的综合危害，从1960年代到2010年代，高风险地区增加了30.7％，而低风险地区减少了38.9％。特别是，暴风雪的高危险区和低危险区在过去几十年中发生了最大的变化，前者增加了37。