An absorbing story of time warp ,during a storm ( hence the title) ; the communication ,through an old TV set ,of a boy of the late eighties ( the fall of the wall of Berlin was a good choice ,for , to many people ,it means the end of the twentieth century ) and a contemporary woman ;and a harrowing dilemma: if she prevents the boy from being run over by a car ,little did she know that her whole life would be changed ,the worse being the loss of her daughter who becomes the girl that never was; add a murder mystery and you've got a gripping thriller , well acted, which sustains the interest till the very end .
I'd tone things down a bit nevertheless: it borrows perhaps too much from another excellent Spanish film "abre los ojos" (1997) which came aside as a shock at the time ;in spite of its unqualified brilliance, there's some "déjà vu" in " durante la tormenta" .