Red rain phenomenon of Kerala - aka alien rain?

[Brights]

I think it's just volcanic ash lingering in the atmosphere and mixing with the rain clouds. Upon mixing with the water, it reacted and formed a reddish/brown hue.
The red cell form of the particles most probably are formed when it has mixed with water. I think it's primary form looks like spherical particles and upon mixing with water, it reacted, causing the indentation in the middle.

 

[baywax]

I don't know if this will help. Here's a quote from a slightly related site.

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http://www.cephasministry.com/natural_disasters_chemical_trails_in_the_sky.html

This may also help, water spouts often transport living organisms from a body of water to inland areas. One such incident delivered salmonids on to the side of a mountain where a friend lived. Other incidents have been reported where "frogs rained from the sky" and so forth.

Red algae, a toxic phenomenon of oceanic inside passages, could well be what is being reported in this case, delivered by the effects of a water spout.

http://mrbadak.com/index.php/2006/06/pictures-of-water-spouts-in-kudat/

 

[baywax]

Then again this doesn't look like the microscopy shown in this thread of the "red rain" but its the red algae I was talking about.

http://www.microscopy-uk.org.uk/ind....org.uk/micropolitan/marine/algae/frame3.html