DISCUSSION: Within the last 24 to 36 hours, a fairly potent low-pressure system deepened over part of the eastern Mediterranean Sea. As a result of this deepening low-pressure system, there was subsequently increased southerly to southwesterly flow at the lowest-levels of the atmosphere (i.e., within the lowest 0.25 to 0.50 miles above the surface. Further up in the atmosphere, there was found to be more west-southwesterly to westerly flow which facilitated increased deep-layer rotation in any convective storms which developed within the warm sector of this deepening low-pressure system. Thus, as shown above, one such storm which developed just offshore from coastal sections of northwestern Italy flared up into a deeper convective storm which ultimately went on to produce a nasty waterspout (as captured on film in the footage attached above).
It goes without saying that even though, waterspouts such as the one captured above can be small and brief with respect to both intensity and duration, they can still often represent a substantial threat to both small boats, beach-goers, and coastal infrastructure/businesses. Thus, even though, winter is setting in across many areas in this region of the world, there is still a residual threat for various forms of severe weather even across parts of south-central Europe even in early December.
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©2017 Meteorologist Jordan Rabinowitz