International scientists have found a connection between these extreme weather events and the impacts of climate change on the jet stream.
Extreme weather takes climate change models 'off the scale
NZ Requires Financial Sectors to Report on Climate Risks - Climate Adaptation Platform
How Climate Change Impacts the Jet Stream and Your Weather - Bloomberg
Jet Stream Moving North As Earth Warms, Changing Weather in US, Europe
Global Warming Is Messing with the Jet Stream. That Means More
Study Pinpoints Links Between Melting Arctic Ice and Summertime Extreme Weather in Europe - Inside Climate News
Climate change may not be altering winter jet stream, research
Climate Change: Myths busted! – How It Works
Enhanced jet stream waviness induced by suppressed tropical Pacific convection during boreal summer
Climate change in the United States - Wikipedia