The Collaborative International Dictionary of English v.0.48:

Blasty \Blast"y\, a.
   1. Affected by blasts; gusty.
      [1913 Webster]

   2. Causing blast or injury. [Obs.] --Boyle.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "blasty":
   aeolian, airish, airy, blowy, blustering, blusterous, blustery,
   boreal, breezy, brisk, drafty, favonian, flawy, fresh, gusty,
   puffy, squally, windy