Is there a rainstorm in the desert?

There will be heavy rain in the desert.

In general, the rainfall in desert areas is very small, and the rainfall in most areas is less than 400 mm, which leads to the barren grass and very dry air in desert areas. But sometimes, especially when the climate is abnormal, when the heavy rainfall weather system passes over the desert, it will occasionally encounter the "blocking" of other airflow and slow down the speed, or simply stagnate, thus pouring a lot of water vapor carried in the cloud into the desert ground in the form of rainfall.

So there will be heavy rain in desert areas, mostly thunderstorms, with little rainfall. The probability of heavy rain in desert area is very small. Even if it rains, it will be quickly evaporated by dry air and strong sunlight.

Whether the desert can become an oasis after heavy rain;

After the heavy rain, the desert can't become an oasis. If the rainstorm continues, the desert ecosystem may change, but if the rainstorm continues, it is a natural disaster. Although heavy rain brings a lot of water to the desert, the nature of the desert makes it difficult to preserve rainwater. Rainwater will flow down the Tarim River and will not accumulate in the desert.

However, heavy rain made the originally dry and hard landform moist and soft, which played a positive role in desert greening. If you want to turn the desert into an oasis, you need to increase afforestation. The roots of plants can play a good role in sand fixation. Only in this way can we retain water and fully absorb it into the soil in the rainy season, and at the same time provide enough water for plant growth to obtain efficient circulation.