The Collaborative International Dictionary
Extratropical
Extratropical \Ex`tra*trop"ic*al\, a.
Beyond or outside of the tropics.
--Whewell.
Wiktionary
extratropical
a. 1 occurring outside the tropics, usually in temperate latitudes 2 (context meteorology English) lacking or having lost tropical characteristics
Wikipedia
Usage examples of "extratropical".
In the 2001 IPCC report, “No long-term trends evident” for tropical and extratropical storms, and no systematic changes in the “frequency of tornadoes, thunder days, or hail.