Tim Cullen turns his attention to the Leonids – go to http://malagabay.wordpress.com/2013/11/24/astral-karma-the-leonids/ … and the source of this meteor shower is Comet Tempel Tuttle (which has an orbital period of 33 years). The orbit intersects the Earth regularly hence material ejected from the comet during perihelion passes do not have to spread out over time to encounter the atmosphere of the Earth.
This year, 2013, there was a peak during the 19th, 20th and 21st of November, during what was a cold blip, but the peak was caused by 'sporadics' – and the Leonids are actually outnumbered by meteors with orbits that are not aligned to Comet Tempel Tuttle. The travelling sporadics have a clear impact pattern he says and goes on to point a finger at the Asteroid Belt – and an earlier post at http://malagabay.wordpress.com/2013/04/25/the-other-big-bang-theory/