Excellent write up Joe, great to read especially this paragraph;
Jan 2004 thundersnow event also deserves a mention, black clouds descended from the North, moderate rain began and got heavier, and then all of a sudden, a massve gust of wind picked up, I remember watching the rain turn to horrizontal snow flakes in about three seconds! Visibility also went from good to virtually nothing in about 10 seconds! Wehad green lightning from that as well, very close by, the thunder sounded all odd and muffled, the snow flakes got bigger and bigger also, and the best snow came after the front, it must have snowed huge flakes for about 2 hours!
I remember this well, possibly the 18th or 28th Jan?? Time around 16.00?
I looked at this on the radar and there was a defined line East/West( wales out pass London) that moved directly south.Cold air mass dropping over moist air giving the most amazing weather i've ever seen.Started as light rain, then torrential rain turning to heavy snow in seconds with the most amazing purple lightning i've ever seen.We were left with a moderate covering of snow, quite an amazing day.
I believe this 'line' dropped as far as the south coast?
Has anyone got any links to radar that day?