How long did the snowstorm in Texas last?

A month. In February, 20021year, several states in the central United States were experiencing severe snowstorms (the snow area exceeded10.3 million square kilometers), resulting in power outages for more than 5.5 million households. Texas, which is located in the southern part of the United States and has a low latitude, is the most seriously affected. Blizzard paralyzed the power grid in Texas, with more than 4 million households blacked out and electricity prices soaring, affecting many industries such as oil refining, semiconductor and animal husbandry. This snowstorm and severe cold are "once in a hundred years" for Texas. The lowest temperature in many places in Texas is ten degrees or even twenty degrees lower than the average temperature in the same period of the year, and it lasts for several days. This is extreme weather and a "small probability event".