I think it's the weather.

If it is small to moderate rain (snow), it will certainly alleviate the drought, but if it is half an hour next time, it will never completely alleviate the drought, let alone lift it. Besides, we don't know whether it will rain or not, and the weather will change. It rained lightly in Shandong, but we issued an orange warning for drought. But if the cold air is strong, there will usually be rain and snow, but sometimes there will be strong winds (we often have strong winds in Longkou, but it doesn't rain very much)! ~ If the temperature is greater than three degrees, it is best to use artificial rainfall or artificial precipitation enhancement! ~