It's snowing!
'Nevicando' — ne-vi-CAN-do. Stress on the third syllable. 'Ne' — short 'e'. 'Nevi' comes from 'neve' (snow).
Use when snow is falling. In most Italian cities, snow is rare and causes excitement or chaos — or both. In mountain areas and northern cities it's more expected.
'Nevicando' is the gerund of 'nevicare' (to snow). 'Sta nevicando' uses the 'stare + gerundio' construction for present continuous — an action happening right now. The root 'neve' (snow) appears in the verb.
Ha nevicato stanotte.
It snowed last night.
Past event — 'ha nevicato' uses 'avere' (not 'essere') despite seeming intransitive
È tutto bianco!
Everything is white!
Exclamatory reaction to snowfall — childlike joy that Italians of all ages express
La neve ha bloccato le strade.
The snow has blocked the roads.
Practical consequence — snow chaos is real even in northern Italian cities
Snow in Rome (rare) or Florence becomes national news. Even a light dusting shuts schools and causes traffic paralysis. Northern Italians find southern Italians' reaction to minor snow both amusing and baffling.