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I think the simple answer to your question is that sunlight widens the potential area for storms by producing a better convective environment, whereas nocturnal storms are highly localized based on climatological factors. While a minority of storms do occur overnight due to local mesoscale features such as nocturnal low-level jets, the majority of storms ...


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Upwards stroke happens when the stepped leader and the traveling spark have already connected. This path then becomes much more conductive than any other paths where the connection hasn't happened yet—because the latter ones have gaps of non-ionized air inside them. This highly conductive path shunts all the remaining stepped leaders, lets the charges ...


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The storm and basics: Here is an animation I got from this NOAA Tweet of the lightning in Harvey hours before landfall: https://mashable.com/2017/08/31/harvey-weather-satellite-maps-lightning/, where I found the imagery, offers some basic thoughts, including the key concept that: As with most hurricanes, you'll notice that the most active area of lightning ...


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