2013 Toyota Prius — footwell gets wet only after heavy rain

Following up on footwell gets wet only after heavy rain: still happening, but I have better notes now. If this is nothing, great. I want that in data.

Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. That's where I'd start. A shop burned me once by skipping that step. Might be overthinking it, but I'd rather overthink than overspend.