It is important to note that many of the analytical probably distributions within the Distribution Fitting Analysis are meant for block maxima (e.g., annual maximum series) and are not appropriate for partial duration series where there may be 0 to many events each year. When selecting a probability distribution, consider the data that is being modeled and do not solely rely on goodness of fit metrics.
Additional tutorials on partial duration series can be found here: Partial Duration Workshop 2023.