  Based on recent well-posedness results in Sobolev (or Besov spaces) for
periodic solutions to the Fornberg-Whitham equations we investigate here the
questions of wave breaking and blow-up for these solutions. We show first that
finite maximal life time of a solution necessarily leads to wave breaking.
Second, we prove that for a certain class of initial wave profiles the
corresponding solutions do indeed blow-up in finite time.
