### Clue: Would winds enveloping such terrain be visible as fronts? (4,4)
### Answer: DUST BOWL 
 ### Explanation: Cryptic defn:  Depression in arid land,*terrain* looking like a bowl.  *Winds* blowing into it carry sand and thus can *be visible as* moving *fronts*.  A dry tsunami, in fact; not quite as frightening, but still…(Ed. note:  pl see  &  for the full monty)