If you don't see the cyclonic cloud pattern in the above image from
morning of 2016 May 15th, press on start (above image) to see how it
developed over next 2 days and subsequently after another pause it will
show how it developed over previous 2 days, pausing at this point
which clearly shows the cyclone with eye over Sri Lanka which our Met
Department continued to call a depression which formed into a cyclone
only when it reached Bangladesh.
Images are about 1 hour apart and shown as sequence at 0.5 seconds
between them.
It is a pity meteo.gov.lk
don't use the images freely available on the Internet. They only seem to post
an image daily.