The Argentine research base, Esperanza, on the northern tip of the Antarctic peninsula, set a new record temperature of 18.3°C on 6 February 2020, potentially beating the former record of 17.5°C on 24 March 2015, according to Argentina’s national meteorological service (SMN).
A committee for WMO’s Weather and Climate Extremes Archive will now verify whether this indeed is a new record for the Antarctic continent, which is defined as the main continental landmass.
“Everything we have seen thus far indicates a likely legitimate record but we will of course begin a formal evaluation of the record once we have full data from SMN and on the meteorological conditions surrounding the event. The record appears to be likely associated (in the short term) with what we call a regional "foehn" event over the area: a rapid warming of air coming down a slope/mountain,” according to WMO’s Weather and Climate Extremes rapporteur, Randall Cerveny.
The WMO official Press Release: