Sorry for asking a question and not posting a meaningful comment...

I've been curious the past couple of days watching 98L on the "Rainbow" view from the ssd.noaa.gov site...It seems like (at times) that convection seems to be 'firing up' from a central location that does not drift west west with time...For example, on the loop from 19:15 to 2:15 tonight (http://www.ssd.noaa.gov/goes/east/carb/loop-rb.html)
there seems to be a "hot spot" near 11N 40W where convection is firing up from a source of energy that appears ~stationary (almost like looking at vis sat of the smoke trail from widfire)...What causes this perception when looking at this loop? In this loop, Felix has gained almost 2.5o longitude yet this "hotspot" near 11N 40W appears ~ stationary...Is the wave moving that slow or is there something else causing this perception from the "Rainbow" loop...

Thanks in advance for any explanations...