How much rain has actually fallen in the last hour at each of the Comune's 26 rain gauges, valley by valley from Voltri to Nervi. Measurements, not a forecast — the allerta is the warning.
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The Comune di Genova runs 26 rain gauges across a comune about 30 km long, and publishes what they measure roughly every three minutes. This page shows what each one measured in the last hour, grouped by the part of town it stands in — so you can read the gauge above your own valley instead of one figure for a city that never has the same weather from Prà to Nervi.
Everything here is rain that has already fallen. The allerta is somewhere else, and it is linked below.
Measured at the gauges, not forecast
No rain measured at any reporting gauge in the last hour.
25 gauges are reporting and every one of them measured 0.0 mm over the last hour. That is a measurement of the hour just gone at these gauges, not a statement about the hours ahead.
Readings last collected .
1 of the 26 gauges is not reporting, so this page cannot see what is falling there.
Rain measured at a gauge is not a warning
The western end of the comune, including the Cerusa and Branega valleys behind Voltri. Fabbriche and Crevari are the hill gauges here.
| Gauge | Rain in the last hour | Height | Reading taken |
|---|---|---|---|
| Fabbriche | 0.0 mm | 118 m | |
| Crevari | 0.0 mm | 192 m | |
| Voltri | 0.0 mm | 24 m | |
| Pra CEP | 0.0 mm | 120 m | |
| Pra | 0.0 mm | 40 m | |
| Pegli | not reporting | 21 m |
The valley behind Sestri. Scarpino, at 590 m, is the highest gauge in the network — the ground the water comes off.
| Gauge | Rain in the last hour | Height | Reading taken |
|---|---|---|---|
| S. Carlo di Cese | 0.0 mm | 313 m | |
The gauges belong to the Comune di Genova, which publishes them as open data and refreshes them about every three minutes. Each one measures the rain falling on a single spot and nothing else — not the slope behind it, not the next valley, not the water already moving in a culvert. Height matters here more than in most cities: Scarpino's gauge stands at 590 m on the hill above the Chiaravagna, while Sestri Ponente's, under five kilometres away down the same valley, is at 52 m. The westernmost gauge, at Fabbriche behind Voltri, and the easternmost, at Nervi, are about 26 km apart.
“Raining right now” comes from the Comune’s own pioggia istantanea reading. The Comune publishes no unit for it, so this page uses it only as a yes or no and never prints it as an amount.
Roughly 500 mm of rain fell on a small part of the city in a few hours, and the Fereggiano — culverted beneath the street that carries its name — came out. Six people died in the same stretch of via Fereggiano. The gauge nearest that catchment on this page is S. Eusebio, above Quezzi.
That storm is also why a single city-wide rainfall figure is worthless here. It sat over a few square kilometres. Other parts of the comune had an ordinary wet day.
Very intense rain over the city and the heights behind it. The Bisagno, the Fereggiano and the Sturla all flooded, large areas of the centre went under and one person died. Italy's colour-coded allerta — gialla, arancione, rossa — was introduced nationally after this flood.
The comune runs about 30 km along the coast, is in places barely a kilometre deep before the ground goes vertical, and is divided into nine Municipi. Rain that fills the Val Bisagno can leave Prà dry, and the other way round. Reading the gauge above your own valley is the point of this page; the city-wide answer is the one thing it deliberately does not give.
Every number on this page is a measurement from an instrument at one spot, for one hour that has already happened. It is not a forecast, it is not a flood warning, and it cannot tell you whether a street, a home or a torrent is safe. Rain at a gauge and water in a culverted stream are not the same thing: the stream gathers rain from the whole slope above it, including ground no gauge stands on.
Dati: Comune di Genova — Rete di monitoraggio pioggia, CC BY 4.0
| Scarpino |
| 0.0 mm |
| 590 m |
| Sestri Ponente | 0.0 mm | 52 m |
| Borzoli | 0.0 mm | 107 m |
The western valley, listed from the top of it down to the mouth at Sampierdarena.
| Gauge | Rain in the last hour | Height | Reading taken |
|---|---|---|---|
| Cesino | 0.0 mm | 230 m | |
| Pontedecimo | 0.0 mm | 103 m | |
| Murta | 0.0 mm | 195 m | |
| Begato CIGE | 0.0 mm | 139 m | |
| Sampierdarena | 0.0 mm | 25 m |
Genova Centro sits near the port; the Granarolo gauge is 220 m up the slope behind it.
| Gauge | Rain in the last hour | Height | Reading taken |
|---|---|---|---|
| Granarolo | 0.0 mm | 220 m | |
| Genova Centro | 0.0 mm | 67 m |
The valley of the 2011 and 2014 floods, listed from the upper valley down. S. Eusebio stands above the Fereggiano — the torrent that came out on 4 November 2011.
| Gauge | Rain in the last hour | Height | Reading taken |
|---|---|---|---|
| S. Cosimo di Struppa | 0.0 mm | 221 m | |
| Prato | 0.0 mm | 98 m | |
| Pino Sottano | 0.0 mm | 150 m | |
| S. Eusebio | 0.0 mm | 220 m | |
| Quezzi | 0.0 mm | 157 m |
The eastern quarters and the hills behind them, out to Nervi at the far edge of the comune.
| Gauge | Rain in the last hour | Height | Reading taken |
|---|---|---|---|
| S. Martino | 0.0 mm | 96 m | |
| Bavari | 0.0 mm | 300 m | |
| Quarto | 0.0 mm | 49 m | |
| Nervi | 0.0 mm | 46 m |