High1 vs Yongpyong: which has more reliable snow?

The short answer

Neither has been reliably snow-sure in any month over the last 30 winters, but Yongpyong has had the better odds, especially in December, January, February and March.

Month by month

December: High1 0 of 30, Yongpyong 2 of 30 snow-sure winters (1% and 14% of days).

January: High1 1 of 30, Yongpyong 8 of 30 snow-sure winters (14% and 42% of days).

February: High1 7 of 30, Yongpyong 18 of 30 snow-sure winters (32% and 68% of days).

March: High1 5 of 30, Yongpyong 12 of 30 snow-sure winters (32% and 61% of days).

April: High1 0 of 30, Yongpyong 0 of 30 snow-sure winters (1% and 7% of days).

A snow-sure winter is one where mid-mountain had 30 cm or more of modelled natural snow on at least 90% of that month’s days.

Height and terrain

High1 and Yongpyong are 52 km apart as the crow flies. High1 first, then Yongpyong: Village 715 m against 700 m; Mid-mountain 1,046 m against 1,079 m; Summit 1,376 m against 1,458 m. Mapped downhill runs: High1 18 km, Yongpyong 22 km (OpenStreetMap).

In February, the village had 30 cm or more of natural snow on 8% of days at High1 and 34% at Yongpyong.

Questions

Which has more reliable snow, High1 or Yongpyong?

Neither has been reliably snow-sure in any month over the last 30 winters, but Yongpyong has had the better odds, especially in December, January, February and March.

Which has better snow down to the village, High1 or Yongpyong?

In February, Yongpyong: its village had 30 cm or more of modelled natural snow on 34% of days, against 8%.

Does this include snowmaking?

No. These are modelled natural snow figures only, from ERA5 weather. Groomed pistes with snowmaking often ski better than this.