Assessing volcanic hazards is an important process that is best accomplished by a team of investigators possessing a range of technical backgrounds and skills. There are many active volcanoes for which hazard assessments are not currently available, or are inadequate, and in cases where renewed volcanic crisis occurs, rapid hazard assessment has to be undertaking in less than ideal circumstance (e.g. the eruption of Chaiten volcano in 2008). We propose a workshop that focuses on developing the breadth and depth of understanding across the community for undertaking rigorous hazard assessments with the key objective of improving this process before a volcanic crisis begins. To address this need, we propose a combined field and computational modeling workshop to exchange expertise on the complete process from collection of rudimentary information about the volcanoes past activity to providing a hazard assessment based on up-to-date scientific understanding of the physical aspects of hazards themselves as well as their probabilities of occurrence. The specific goals of the workshop include: # understanding the fundamentals of volcanic hazard assessment and the array of methodologies and tools available to undertake the task, # recognizing the relationship between field studies, computational modeling and hazard assessment, # learning how to access and use computational modeling, support networks and management tools within the Vhub cyber-infrastructure environment, and # analyzing the results of field and modeling outcomes, in small group environments in order to understand the suitable applications and, importantly, limitations of the approaches utilized. '''Colima, México. Jan. 9 to Jan. 20, 2013'''