"Peter Hearnden" wrote in message
...

Remarkably little snow for 1979.

Well, it ranked 12th out of 105. Lack of depth,
I suppose ... there were 40 days with snow lying
but it was never deeper than 9cm. In December
1981, by contrast, the deepest snow at 09z was
22cm and in February 1991 18cm.

The only double-figured depth since then was
10cm on the morning of 28th December 2000.

Humm, so, and perhaps I've missed it, what defines the EWSI? It's not snow
lying then but some combination of lying (at 9am?) and depth?

Yes, Peter ... it's a sum of 0900z snow-depths for the entire winter.
The idea was to have an index which incorporated both
quantity and persistence. It's in the FAQ.

pe