This paper analyses the effectiveness of official interventions of the Colombian Central Bank in the foreign exchange market over the period of June 2008–December 2013. The estimation procedure suggested by () is used to estimate a threshold model for the spot exchange rate that splits the data sample into two different regimes that depend on the extent of the misalignment of the exchange rate from a fundamental value. The estimation results provide empirical evidence of the existence of a coordination channel of intervention proposed by (). According to the theory of the coordination channel, interventions by central banks work as signals that solve a coordination failure in the foreign exchange market when speculation moves the exchange rate from its fundamental value. The results suggest that foreign exchange interventions had a considerable and statistically significant effect in depreciating the domestic currency when the spot exchange rate was sufficiently below from its fundamental value.