Bear in mind, that is the mean of 50 different alternative outputs from the ECMWF model (not just the OP or operational model). A few duds mixed in there, but also numerous 10"+ big dogs too. The fact that it has been consistently showing a 6-8" mean for Dallas is pretty exceptional, especially given EURO Ensembles have a reputation of being more reliable than the Emsembles for the other models.