This paper documents the impact of Argentina's recent economic crises on different aspects of poverty, with a special focus on the economic collapse of 2002. We discuss the methodology of poverty measurement in Argentina and we use a simple rule to compensate for the lack of regional poverty figures until 2001, providing consistent series of urban poverty estimates at the national and regional levels. We then present series of short term dynamics of poverty, decomposing the changes in every period of time with panel data. Finally, we analyse the determinants of poverty, with a focus on accounting for observed differences in income (and thereby poverty) between October 2001 and May 2002. Among other conclusions, we find in our decomposition analysis that households without the means to diversify their income sources suffered more than others from the crisis of 2002.