12 February 1784 Ice flows were spotted in the Gulf of Mexico after passing from the Mississippi River. Ice actually blocked the river at New Orleans, LA. This was only 1 of 2 times that this has ever occurred, the other was during the Great Arctic Outbreak of 1899. Storm Track, Fog, and Ice Charts of the North Atlantic Ocean, and Hurricane Track Charts of the Gulf of Mexico (Google eBook) Front Cover John P. Finley 1889
8 March 1784 Hurricane spotted at Cuba
1784 SPANISH SHIP IS FOUND IN GULF By WILLIAM J. BROAD Published: December 19, 1993
Geophysical research with citations from B. Franklin (1784) attributing the Gulf of Mexico, Mississippi River Ice flows to a volcanic eruption. "The anomalous winter of 1783–1784: Was the Laki eruption or an analog of the 2009–2010 winter to blame?" Rosanne D’Arrigo,1 Richard Seager,1 Jason E. Smerdon,1 Allegra N. LeGrande,2 and Edward R. Cook1 Received 7 January 2011; revised 31 January 2011; accepted 7 February 2011; published 15 March 2011.
Franklin Mint website