Cracks in the gable wall completely through the masonry, year of construction 1968

I have a rafter roof and not a purlin roof.

I also hardly think that a 10 meter long purlin roof would do without support beams.

Honestly, it wasn’t about which type of roof I have, but where the cracks are coming from.

If it is really a rafter roof, you have large shear forces on your eaves-side exterior walls. Possibly, strong pressure and suction forces acted on your roof surface due to the storm, which in turn may have pushed away your exterior walls that are interlocked at your gable wall.

Are there also cracks on the gable side on the ground floor?

It's difficult to assess like this. Maybe these were a few suggestions?

Regards

Even if the gable masonry does not support the roof, it is still a pitched roof that touches the gable sides. If this then gets agitated by gusts, forces also act on the masonry. Right?

A photo would have done a lot for the post. Cracks are not just cracks. Are they cracks in the plaster, stepped cracks, or cracks with a wider progression?
Be that as it may: even if you find this post offensive, summarized well in his #4 what your question concerns.

A structural engineer would be the only one who can assess whether it is the wind or age that is causing the damage. It cannot be ruled out that the crack will spread further on the ground floor.

Yes, I'm sorry, I was really a bit agitated about the cracks yesterday...

I will take some photos.

There are no cracks at all on the ground floor.

Here are the photos. I have traced the crack pattern.