Os rydyn ni'n moyn bwrw eira yn y gorllewin heno, dwi'n gobeithio eich bod chi'n iawn! ;-) I think nowcasting is definately the best solution, all sorts of problems with the radar, ppn showing when there is none, sleet where there is snow. Here in South Pembrokeshire we had a hefty snow shower at 7pm, and since then the temperature has dropped by about 3 degrees, so i'm fairly certain that any ppn that will fall overnight will be as snow, here's hoping that the low pressure spins some our way in the first place!