Low
storm activity occurred during the Spörer Minimum linked to an acceleration of the Atlantic Meridional Overturning Circulation (AMOC).
Not exact matches
Peak tornado
activity in the central and southern Great Plains of the United States is
occurring up to two weeks earlier than it did half a century ago, according to a new Montana State University study whose findings could help states in «Tornado Alley» better prepare for these violent
storms.
In a paper that appeared online on July 18, 2017 at Weather and Climate Extremes, the team reports that climate change attributed to human
activity made the
storm much more severe than would otherwise have
occurred.
Strangely, it
occurred in conjunction with a spate of solar
activity during what is usually a quiet period in the Sun's 11 - year sunspot and
storm -
activity cycle.
Slowing such overturning by reducing the horizontal differential heating could tend to allow heat to build up at lower levels until the lapse rate is more favorable to localized vertical overturning (LVO)(The two forms of overturning are not always completely distinct or separate; for example, the Hadley cell, Walker, and monsoon circulations, as well as extratropical
storm track
activity (developing from baroclinic instability (Rossby wave phenomena)-RRB- are driven and organized in part by horizontal differential heating, but in the ascending portions of these circulations, cumulus - type convection can
occur).
As to the second the answer is probably no specifically referring to hurricane
activity mentioned by McHugh the actual frequency of severe hurricanes is less now than it has been in the past: Only 4 «highest category»
storms have
occurred in the last 10 years!
There are two typical winter
storm systems that
occur centered around Colorado and Alberta Canada because the Rockies create that jet stream meander which causes upper level divergence and enhanced cyclonic
activity.
4 of the bird deaths (and these were the ones that really seemed to get some people on the end times are nigh or it's some military experiment gone awry angle) are suspected of
occurring because of fireworks scaring and disorienting them, lighting strike or other
storm activity, or something along those lines.