Italy breaks national 6-hour rainfall record with 496 mm (19.5 inches)
A weather station in Cairo Montenotte, Province of Savona in the NW Italian region of Liguria, recorded 496 mm (19.5 inches) of rain in just 6 hours on October 4, 2021, breaking the country's 6-hour rainfall record of 472 mm (18.6 inches) set in 2011. While rain was recorded across the country yesterday, the storm unloaded most of its power in the Savona area.
Agenzia Regionale Protezione Ambiente Ligure (ARPAL) reported 1-hour rainfall totals of 145.2 mm (5.7 inches) in Cairo Montenotte, 178.2 mm (7 inches) in Urbe and 181 mm (7.1 inches) in Vicomorasso – a new national record. Furthermore, figures from ARPAL show the station at Rossiglione recorded more than 900 mm (35.4 inches) of rain in 24 hours.1
President of Liguria Giovanni Toti said the situation in the region was critical and that it could worsen, especially given the extreme levels of rainfall.
The rain caused landslides and severe flooding, leading to road and highway closures, and temporarily halting trains between the Ligurian coastal towns of Savona and Turin.2
Widespread flooding was reported in the Pontinvrea area where the Erro River overflowed, leaving the area underwater.3
In addition to the Erro River in Pontinvrea, the Bormida River in Cairo Montenotte also overflew, as well as Letimbro in the city of Savona.
Italy has just broken its 6-hour national rainfall record. Cairo Montenotte (near Genoa in the north-west) recorded a jaw-dropping 496 mm (19.5 inches) of rain in just 6 hours.
Satellite shows a stationary thunderstorm pummelling the area all day. pic.twitter.com/5NmxKBHNm0
— Scott Duncan (@ScottDuncanWX) October 4, 2021
Intense rain also hit other parts of Italy, especially the north, and a red alert for bad weather was declared in Piedmont, which borders Liguria to the northeast.
"A cold front loaded with rain and thunderstorms will affect Italy for several days this week," iLMeteo.it chief Antonio Sanò said, adding that more flooding can be expected in the north, especially in the Genoa area.4
1 Italy – Floods and Landslides in Liguria Region After 181mm of Rain in 1 Hour – FloodList
2 Flooding stops trains between Savona and Turin – ANSA
3 Weather warning, flood in the Savona area: a collapsed bridge, landslides, interrupted roads and railways – Italy24News
4 Autumnal front brings chills, storms to Italy – ANSA
Featured image credit: NASA Terra/MODIS, TW
If you value what we do here, create your ad-free account and support our journalism.
Your support makes a difference
Dear valued reader,
We hope that our website has been a valuable resource for you.
The reality is that it takes a lot of time, effort, and resources to maintain and grow this website. We rely on the support of readers like you to keep providing high-quality content.
If you have found our website to be helpful, please consider making a contribution to help us continue to bring you the information you need. Your support means the world to us and helps us to keep doing what we love.
Support us by choosing your support level – Silver, Gold or Platinum. Other support options include Patreon pledges and sending us a one-off payment using PayPal.
Thank you for your consideration. Your support is greatly appreciated.
Commenting rules and guidelines
We value the thoughts and opinions of our readers and welcome healthy discussions on our website. In order to maintain a respectful and positive community, we ask that all commenters follow these rules:
We reserve the right to remove any comments that violate these rules. By commenting on our website, you agree to abide by these guidelines. Thank you for helping to create a positive and welcoming environment for all.