This article is from the Storms FAQ, by Chris Landsea email@example.com with numerous contributions by others.
(Stephen Caparotta, D. Walston, Steven Young and Gary Padgett compiled
Here is a list of tropical cyclones that have crossed from the Atlantic
basin to the Northeast Pacific and vice versa. The tropical cyclone must
have been of at least tropical storm strength in both basins (i.e.
sustained winds of at least 34 kt, or 18 m/s). This record only goes
back to 1949. Before the advent of geostationary satellite pictures in
the mid-1960s, the number of Northeast Pacific tropical cyclones was
undercounted by a factor of 2 or 3. Thus the lack of many of these
events during the 1960s and earlier is mainly due to simply missing the
Northeast Pacific TCs.
There has not been a recorded case where the same tropical cyclone
crossed into the Northeast Pacific then crossed back into the Atlantic.
Atlantic Hurricane Cesar (July 1996) became Northeast Pacific Hurricane
Atlantic Tropical Storm Bret (August 1993) became Hurricane Greg
in the Northeast Pacific.
Northeast Pacific Hurricane Cosme became Atlantic Tropical Storm Allison
Atlantic Hurricane Joan (October 1988) became Northeast Pacific
Atlantic Hurricane Greta (September 1978) became Northeast Pacific
Atlantic Hurricane Fifi (September 1974) became Northeast Pacific
Tropical Storm Orlene.
Atlantic Hurricane Irene (September 1971) became Northeast Pacific
Tropical Storm Olivia.
Atlantic Hurricane Hattie (October-November 1961) became Northeast
Pacific Tropical Storm Simone.
A Northeast Pacific Tropical Storm (September-October 1949) became an
Atlantic Hurricane (Storm #10) and made landfall in TX.