Pretty poor attempt at a real cold night last night, started out well getting down to -3.9c at around 8, but didn't drop from there. 2018's easterly was much more potent getting down to -6.1c the day before March! and four days in it was still was going strong 4 days in, this spell has already peaked. I'd put this easterly similar to the Feb 2012 one but even that had a low of -5.9c and deeper snow into inland parts rather than just the Eastern Coasts. Feb/March 2018, January & March 2013, all of the winter months of 2009 and 2010 were all better than this.