tiputtaa (verb) –
Drops, drips, drops off.
In our example phrase, tiputetaan is a passive form of the verb tiputtaa.
”Varo! (Watch out!) Katolta tiputetaan lunta ja jääta!!!” literally translates as ”From the roof is being dropped snow and ice!!!” In Finnish, when the passive voice is used, it normally implies that a person or people are doing it.
Hopefully we won’t be seeing too many more of these signs for too much longer as the weather begins to warm up. In the meantime, be careful out there!
See tiputtaa fully conjugated here, and some in depth discussion on passive voice in Finnish here, especially noting two interesting points: 1) There are no first second, or third person forms of verbs in the passive voice. And 2) It can also be said that in the Finnish passive the agent is always human and never mentioned.