By the way - extreme snow events are a particular case of extreme precipitation events - so yes they are caused by climate change.
As to your last comment - I have shown the trends in the extreme precipitation events by siting scientific papers showing statistically significant trends, I have also shown abundantly that records are been broken on an increasingly frequent basis.
A drought is a very specific event over which a thresh-hold has to be crossed in the lack of rainfall - the periods and intensities of heatwaves are increasing by a statistically significant trend. The two things are not the same thing.
The IPCC obviously didn't get your note saying that they said there has been no increase in extreme weather - since they have just released a report on preparedness for extreme events showing the trends upwards;
You really need to educate yourself about the basics.
quotes from the SREX report, on trends:
"There is medium evidence and high agreement that long-term trends in normalized losses have not been attributed to natural or anthropogenic climate change"
"The statement about the absence of trends in impacts attributable to natural or anthropogenic climate change holds for tropical and extratropical storms and tornados"
"The absence of an attributable climate change signal in losses also holds for flood losses"
"Some authors suggest that a (natural or anthropogenic) climate change signal can be found in the records of disaster losses (e.g., Mills, 2005; Höppe and Grimm, 2009), but their work is in the nature of reviews and commentary rather than empirical research."