The water seems to be filling the window tracks then entering.
Sliding patio door track fills with water.
These holes are normally in the outside corners of the tracks.
Water collects on both sides of the track where the sliding part of the door sits and where it slides.
Last night we had heavy winds with the rain which blew it against the door and the tracks filled to overflowing quickly even though the rain wasn t all that heavy.
Damage to the door itself.
Check to see which door moves and which one is the stationary.
Water can seep through even the smallest cracks.
It is likely that one or both of these weep holes are clogged.
Look for dirt or debris that could be clogging these holes.
This is a three panel horizontal sliding window.
To slide the heavy doors along the metal frames the doors use metal or plastic rollers.
The weep holes seem present and unblocked.
Sliding door sliding patio doors are the solution sliding panel travels on a hardened stainless steel track cover for ek366 glass options along with argon or krypton gas fills are options k366 that you will want to discuss with your window representative.
If a frame is crooked water can leak into the gaps between door and frame.
If the sliding glass door is placed directly on a pre existing concrete slab with no recessed area in which the door track can lay water can penetrate the home s interior flooring through the bottom of the threshold if there is a breach in old caulking.
Have a reputable sliding door contractor remove the door if it has not been damaged build a new frame and reinstall the door.
I am adding a photo of the window tracks.
There s a trio of aligned holes on the track rails.