Natural Order and Science

[Neo-Scholastic]

"A scientific law is a statement/description based on repeated experimental observations that describes some aspects of the universe."...This is what a scientific law is. Statements are the things people say.  Descriptions are things people say that describe things.  So a scientific law is what scientists say, and what they are saying things about is things in this universe.  And they are based on experiments/observations.

You're right descriptions are after-the-fact accounts. When someone asks, why did x, y, and z happen, they are not asking for an after-the-fact description of x, y, and z. They want to know what thing made x, y, and z happen, regardless of how that thing is described.