This paper consists in the analysis of the reaction of the FX market with respect to announcements concerning new macroeconomic data. The analysis consists in the study of the volatility of changes for a set of currency pairs that include the Euro at the moment of these announcements. A measure of the speed with which new information is included in prices is provided by means of a simple GARCH model fitted at each release. We found evidence that the currencies are immediately reacting to this new information.