colweather.org.uk

A very rare occurrence here overnight of frequent hail showers putting down 2 or 3cm covering solely of hail. On most occasions when a hail covering has persisted this has resulted from a mix of wintry showers including snow, hail and pellets. I have not recorded it as a day of snow lying but have noted that the accumulation consisted entirely of hail and pellets. On higher ground near here in the forestry at 300 masl there was 7cm accumulation of several cm of hail stones on top of snow cover. Just wondered what others would do given these rare circumstances?

I don't think COL has any place in the log to record hail lying. It just should be recorded in the usual hail falling place according to size.
Your observation though is interesting and could be put in the comments for a specific day in the month.

I note that according to page 299 of "The Weather Observer's Handbook" (Stephen Burt, 2012), falls of snow pellets and ice pellets "count as 'snow' for statistical purposes". This is in the context of notes on "snow or sleet observed to fall" . Logcally, it would seem to follow that any accumulations from (or partially from) falls of snow or ice pellets should therefore count as "snow lying" although I have to say I'm unclear about this, and I suspect it could be a point of debate! Can anybody shed any light on this and is there an authoritative view, e.g. from the UK Met Office or the World Meteorological Organisation?