pamperon.

1771 tr. A.-J. Pernety Hist. Voy. Malouine Islands 105 The Pamperos blew with equal violence the whole night; and the sea was terrible.

1797 J. C. Davie Let. in Lett. from Paraguay (1805) 58 The fishermen say, that when the pampero blows the gold fish hide themselves in the sands or holes of the rocks.

1847 J. H. Ingraham Paul Perril II. xi. 49 The pamperos sometimes toss up a sea that your boat would not live in three minutes.

1892 W. H. Hudson Naturalist in La Plata 132 Sometimes flying like thistledowns before the great pampero wind.

1934 A. H. R. Goldie Abercromby's Weather (rev. ed.) xi. 173 The word ‘pampero’ is used in a very vague manner in the Argentine Republic and neighbouring States. Every south-west wind which blows from off the pampas is sometimes called a pampero; and there is a still further confusion caused by calling dry dust-storms pamperos sucios, or dry pamperos. The true pampero may be described as a southwest wind, ushered in by a sudden short squall, usually accompanied by rain and thunder, with a very peculiar form of cloud-wreath.

1989 Encycl. Brit. XXVII. 702/1 Although light breezes are common, outbreaks of cool air from the south, called pamperos in Argentina, bring gusty winds of 32–45 miles per hour.