1. Some analysis of 2010 Christmas East Coast Storm Yucheng Song

2. Dec 24,06Z f06 minus Dec 24, 12Z dry energy norm for 850,500 and 200mb Quite interesting, who has caused the increase there?

3. Dec 24,06Z f06 minus Dec 24, 12Z 500mb height and wind These two areas are spotted Points: if certain phenomenon can’t be resolved by the model physics, then observations at a later time have to be relied up on

4. Sensitivity calculation One uncertainty area Near Texas/Mexico Spotted by ET KF Initialized on Dec 23,00Z Propagating

6. From Richard Grumm This shows the how the error grows with time

8. If we had a mission on Dec 23/12Z, it would help The little blob near Texas grows rapidly

9. Sparse observing network in the South/Mexico