Acqua Alta is a Venetian tidal phenomenon that happens mostly in winter but can happen at any time of year. It is tidal because it reaches it’s peak at a certain time and then goes down. The water comes in and it goes out. It is affected by a variety of factors including winds coming from a certain direction that do not allow the tidal water to flow back out to sea, barometric pressure, moon phases, storms etc. Some of my “facts” can be a little simplistic because I am not an expert. Rain is not the cause and it is not flooding like a storm surge or like when rivers overflow their banks and the water stays for days. It tends to be high for a few hours and then goes back down.
This webcam in Piazza San Marco (one of the lowest areas of the city) shows that at 9:50 am there is still some water in the Piazza.
No water even attempted to enter my apartment. I know because I think I was up every hour checking. The pictures I took at 4:30 am did not turn out but here are a few later in morning.
1 and 2: 6:34 AM
3 and 4. 7:41 am
No boats have attempted to go under that bridge. And yes, it’s still pretty dark here at that time of the morning.
5, 6, 7 and 8…8:30 ish
9, 10, 11, and 12 between 8:53 and 9:19
This is the metal gate or as Sebastiano called it when he installed it in the door last evening “high tide guard”…don’t know what it is called in Italian. I should have asked him.
As you can see over the course of about three hours it has not gone down much. The next high tide is 90 cm at 17:00…or 5 pm.
I think I’ll check and see if I have the strength to unscrew the “gate” and put it away.