The VisInPractice program at IEEE VIS<http://ieeevis.org/> is an opportunity for visualization practitioners and researchers to meet and share experiences, insights, and ideas in applying visualization and visual analytics to real-world use cases. VisInPractice seeks to acknowledge successful transfers of visualization research into applications as well as current visualization practices occurring in industry. Our primary goal is to supplement the successful program of IEEE VIS with content that is relevant to visualization practitioners. VisInPractice Mini-Symposium on Visualizing Uncertainty The VisInPractice 2018 Program<http://www.visinpractice.rwth-aachen.de/program.html> will include a fast-paced, single-session mini-symposium on the practical aspects of uncertainty visualization. Prefaced with a primer talk by Kristi Potter<https://www.nrel.gov/research/kristi-potter.html> from the National Renewable Energy Laboratory, the event will also include six 10-minute lightning talks. Submission Details We now encourage submissions for these lightning talks via the Precision Conference submission system<https://new.precisionconference.com/submissions>. We ask for a concise 250-word abstract, a 150-word paragraph on what a practitioner can expect to learn from the talk, and one descriptive image figure. Rather than focusing on the academic sophistication of your solution, you must clearly present the practical relevance of your approach. Successful submissions will communicate the general impact of their approach beyond the their specialized application area. Your 250-word abstract should answer the following questions: * What form does your data take and how does uncertainty manifest in it? * What task are you addressing? * How does your visualization solution address uncertainty in the data? * What were the results of applying your solution? We also ask for a 150-word statement that indicates what a practitioner can expect to learn from the talk, answering the following questions with regards to visualizing uncertainty: * What new insight will the audience gain? * What new ability can they apply in their own practice? Based on this input, the VisInPractice Chairs will select the topics that make up the session. We are looking forward to your submissions and to a lively discussion at VisInPractice 2018. Important Dates * June 30, 2018: Abstract submission deadline via Precision Conference<https://new.precisionconference.com/submissions> * July 31, 2018: Notification * August 14, 2018: Revised abstract deadline * September 7, 2018: IEEE VIS<http://ieeevis.org/> early registration deadline * October 22, 2018: VisInPractice 2018 at IEEE VIS<http://ieeevis.org/> in Berlin http://www.visinpractice.rwth-aachen.de/cfp.html