Sea Level Pressure, Thickness and Vertical Velocity/Precipitation - Today
As a general rule, any moisture behind or above the 540 line will be snow. Moisture in front of or below the 540 line will be rain. For snow in Hirafu village, look for the 528 line to be below Niseko.The position of the 540 and 528 lines can be                            found on the Sea Level Pressure and 1000-500mb Charts (lower chart).