The Collaborative International Dictionary of English v.0.48:

noreaster \noreaster\, nor'easter \nor'easter\n.
   a storm blowing from the northeast; -- a term used especially
   in the northeastern region of the United States.

   Syn: northeaster.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

noreaster
    n 1: a storm blowing from the northeast [syn: northeaster,
         noreaster]