Can't put more in one comment.

"It is likely that extreme sea levels (for example, as experienced in  storm  surges)  have  increased  since  1970,  being  mainly  the result of mean sea level rise. "

"There  is  low  confidence  in  observed  global-scale  trends  in  droughts,  due  to  lack  of  direct  observations,  dependencies  of  inferred trends on the choice of the definition for drought, and 
due  to  geographical  inconsistencies  in  drought  trends." No trend in droughts

"There  is  low  confidence  that  long-term  changes  in  tropical  cyclone activity are robust, and there is low confidence in the attribution of global changes to any particular cause." Just as Ivo argues in this column"

Unfortunately the IPCC uses words like confidence, rather than statistically significant in their summary. I invite you too to look closer at the data.