Is that time of the year, again, when is neither winter nor spring. The temperature are rising, falling in a Brownian movement. Is that time when the ground is contracting and diluting a lot.
Also is the time when the roots are looking for food to prepare one of the most beautiful phenomenon in the world, the blossoms.
So as a plumbing matter is that time when is necessary to have the main sewer line cleared. The clearing will give you peace in mind the basement will not be flooded when the spring rains will come. Also don't forget the clearing should be if possible by camera inspection to check the integrity of the line.