Weather barrage Between porch and living room on level floors

Water barrage between floors

What is your question?

Any porch that is open to the weather should be below the level of the main house.
I would enclose the porch with a 2' high wall, and glass/screen windows above. Easier than lowering the porch floor.
Unless there is no roof over the porch.
Then I would remove the porch and re-do it, 4 to 8" below the threshold.