Dangerous Thunderstorm Alerts from ENI continue to be evaluated. In an environment with more isolated cells, the ENI displays are cleaner and more user friendly (decreased clutter). These cells are more long lived today, which reduces the DTA polygons from jumping all around with quickly developing storms that are short lived (Florida case observed yesterday). My concern with the DTA polygons today revolve around the storm movement indicated by these polygons. As the storm area increases lightning concentration will change, which seems to be throwing off storm direction. I am not sure what variables DTAs use to determine direction, but I have observed a few odd changes with polygon directions from minute to minute (1 minute update).

These following two images show the issue, they are one minute apart..the environment could not have changed that drastically…

UFFSU