Just a short note, a record to be precise. Last night the sea water level rose to +1.35 meters above average in the Venice lagoon, in a quite uncharacteristic quarter-moon surge triggered by low pressure conditions on the Adriatic sea. Tonight and tomorrow night two more surges of the same entity are predicted, as shown in the following graph.

The blue line shows the predicted tide, while the red line shows the astronomical tide (the one which would occur under average atmospheric conditions). The surplus of almost one meter of water is due to exceptional conditions.

I would like to stress that, despite my frequent writing on water floods in Venice as of late, a +1.35 meter tide is an exceptional event, one which happens once every two to three years. For Christmas this year we are treated with three in a row, apparently...