I'd completely forgotten about the Feb 21 cold spell - I guess because it occurred during lockdown ?
Checking back, I had a run of 5 ice days (9th - 13th inc) with a max of 0.1c on the 8th. So at least one of the 3 CET stations (Pershore) would have had at least the same and a sub zero ave for the period.
I remember that cold spell in February 2021 very well and in that winter overall, we actually had quite a lot of snow compared to what we have typically been getting in other recent winters (some including last winter, which were complete non-events as far as any sort of winter weather was concerned).
Back in February 2021, I was coming towards the end of my 5th year on this forum (yes, it's hard to believe that it has been so long ago since I first joined this forum as that moment still seems just like yesterday, and the time since then has passed really quickly) and I was already well into recording all of the data for various weather stations here in Edinburgh and reporting that data in the relevant threads on this forum.
In that month, I can recall very well, the day when the temperature at Edinburgh Gogarbank dropped to -12.6°C. Even with this latest cold spell, it has never been as cold as that since then and back then, I can remember that other parts of the UK were recording ice days, including Brian's own neck of the wood down in the south of England.
My thought was that if places in the south of England can get an ice day, surely we can get one in Edinburgh as a result of being much further north. Yet despite the fact that we had that really cold night which I have just mentioned, we still just could not get a single ice day here in Edinburgh at that time. That frustrated me a lot at the time, and I'm sure that some of that frustration probably came through in some of my posts on this forum back then.
At that time, we had not had an ice day in Edinburgh since 1 March 2018 and as it turned out, we continued to not get any ice days after that up until yesterday when we finally at long last, got that elusive first ice day at Edinburgh Gogarbank since 1 March 2018 with today also looking likely to go down as an ice day as well.
Looking back on that, I can understand to a certain extent, what might have caused that. By February, it is already getting a lot lighter at nights and so, the Sun is much stronger then than what it is at this time of the year. This means that had that really cold spell in February 2021 happened a couple of months earlier, there is a good chance that we might have gone on to get that ice day after such a cold night, and I believe that today is showing that up really well as a very good example of that.
The north of Edinburgh, usually always missing out on snow events which occur not just within the rest of Scotland or the UK, but also within the rest of Edinburgh.