Supposed SN 1006 was only 4 lightyears away what would the blasts impact be like on earth? One of the commenters on my answer to https://worldbuilding.stackexchange.com/a/86733/3460 questions that the blast would even have a noticeable impact if that supernova was in Alpha Centauri. And since my answer is just based on my intuition, I would like to figure that out.

So radiation put aside, what would the blast of SN 1006 be like for earth when arriving, supposed it went supernova just 4 light-years away?
Last week, a paper was posted on arxiv (https://arxiv.org/abs/1707.04253v1) which studies the "The Resilience of Life to Astrophysical Events", in particular it deals with the temperature change of oceans (as boiling oceans would evaporate the water of a planet which seems to be bad for biological life forms...). For a assumed SN explosion of Proxima Centauri the temperature change of Earth oceans would only be 0.1 degree Celsius - not enough to extinct life by boiling the oceans.


  


(extract from Sloan, Batista and Loeb, 2017)