The accumulation of cometary dust in the Earth's atmosphere plays an important role in the increase of tornadoes, cyclones, hurricanes and their associated rainfalls, snowfalls and lightning. To understand this mechanism we must first take into account the electric nature of hurricanes, tornadoes and cyclones, which are actually manifestations of the same electric phenomenon at different scales or levels of power.

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Discharge magnitude

While air spirals (tornadoes and hurricanes) have been more frequent since the end of the 1980s and should be more frequent in coming years because of the ongoing increase in atmospheric cometary dust, very powerful discharges, like Category 5 hurricanes, should not necessarily increase.

Category 5 hurricanes last for days and enable massive transfer of energy (charge rebalancing) between the ionosphere and the Earth's surface. So the main energetic source for major hurricanes is the electric potential difference between the Earth and its ionosphere. Reduced solar activity means a less (positively) charged ionosphere, which means reduced electric potential difference between the ionosphere and the Earth which means less frequent category 5 hurricanes. After studying the tropical-storm records made over the last 150 years, Robert Lund reached a similar conclusion concerning the strength of the storms:

'This is a hot button in the argument for global warming,' said Lund. 'Climatologists reporting to the U.S. Senate as recently as this summer testified to the exact opposite of what we find. Many researchers have maintained that warming waters of the Atlantic are increasing the strengths of these storms. We do not see evidence for this at all, however we do find that the number of storms has recently increased.' The study represents one of the first rigorous statistical assessments of the issue with uncertainty margins calculated in.¹

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The study of tornado statistics in the U.S. leads to a similar result. The chart below was compiled from data provided by NOAA.¹ While the overall number of tornadoes shows a steady increase since 2002 (green ascending bars and curve), the number of powerful tornadoes (purple bar and line) has been relatively constant. As a result, the percentage of violent tornadoes is decreasing.²

As seen previously¹, two opposing factors may modulate solar activity. On one side, an approaching Nemesis would tend to reduce the Sun's activity because of 'grounding'; on the other side, an accompanying cometary swarm would tend to increase solar activity because of comet-triggered solar discharges.

In recent years the Sun has been unusually quiet, which suggests that, overall, the Nemesis-grounding factor overpowers the comet-discharge factor. Hence a reduced frequency in major hurricanes (since, as seen above, solar activity is the main driver for major hurricanes). However this is not always the case: the Sun can still experience major activity spikes.