I am kind of amazed that nothing has turned up after 3 days. I still don't think weather is an issue but I went ahead and assembled a collection of charts profiling the upper-air data, sea-surface temperature, and currents for you all to peruse. I saw several pages back that people were asking about winds aloft, so I have included some radiosonde profiles from both Ho Chi Minh City and the Malaysian coast.
Tim Vasquez
Weather Graphics
Link:
Collection of meteorological and oceanographic images for Malaysia Airlines Flight 370 - Weather Graphics
Sample chart: FL340 chart for 08/0000 UTC with
observed radiosonde and interpolated winds:
