Is it possible to have no symptoms and then just have the stroke out of the blue from it?

Yes, but remember. Many folks who have strokes say they had no warnings yet when family history is reviewed and warning signs discussed a large number of them are able to recall things that qualify as warnings. What that means is it pays to take heed from family history and information available regarding strokes and act accordingly.
Yes, but remember. Many folks who have strokes say they had no warnings yet when family history is reviewed and warning signs discussed a large number of them are able to recall things that qualify as warnings. What that means is it pays to take heed from family history and information available regarding strokes and act accordingly.
Yes, but remember. Many folks who have a stroke say they had no warnings prior to the stroke. When family history was reviewed and warnings of stroke risk or impending stroke described a good number of those folks were able to identify them in family and themselves. What that means is knowing family history and stroke warning signs can help prevent strokes or early stroke intervention and treatment.
Yes. Although commonly there are warning signs called tia's prior to the stroke, it can, like a heart attack, just come on suddenly and without any warning at all.