Baloise cloud seeder: positive trend in the 2020 hailstorm season

Basel, October 22, 2020. As part of a pilot project, the Baloise cloud seeder has been deployed in the German-speaking parts of Switzerland since 2018 during the annual hailstorm season from May to September. After a busy five months in the 2020 season, it is now taking a well-deserved winter break as Baloise looks back and takes stock.

The Baloise cloud seeder, a Cessna light aircraft specifically equipped for hail prevention, has been in use during the hailstorm season since August 2018. The method used to ‘seed’ hailstorm clouds causes no harm to human health or the natural environment. For the planned pilot phase, the area of deployment is initially limited to the German-speaking parts of Switzerland. Every year from early May until the end of September, the plane takes to the air and specifically targets hailstorm clouds to ‘seed’ them, which prevents the formation of large hailstones. According to an internal analysis of claims, there are already initial signs that this method is having a positive impact. The analysis is based on internal hail damage claims data from the past twenty years.

Reduction in damage to motor vehicles

One of the segments most affected by hailstorms is motor vehicle insurance. The internal analysis of the number of claims in the motor vehicle segment shows that compared with the period from 2000 to 2017, the level of hail-related claims incurred has remained at a consistently low level since the targeted cloud seeding project was launched. It currently comes to a total in the mid single-digit millions.

Signs that hail intensity is reducing

All in all, the cloud seeder was deployed during four loss events (days with more than 50 claims) in 2020. The average claim volume on these days was around 10 per cent lower than the annual average, which suggests a reduction in intensity. The number of claims per year has been relatively low overall since the launch of the cloud seeder programme in 2018.

Broad support for the project

Alongside the internal analysis of claims data, Baloise is also collaborating closely with the Swiss Federal Institute of Technology (ETH), which is carrying out research into the impact of targeted cloud seeding. In addition, a ‘hail committee’ has been formed – a panel of experts that serves as a sounding board for approaches to the shared objective of preventing hail damage. The committee members include representatives from cantonal building insurance providers, the farmers’ association, the Swiss Insurance Association (SVV) and specialist insurance provider Schweizerische Hagel-Versicherungs-Gesellschaft. “While the downward trend in the severity of hailstorm events is very encouraging, it is still too early to draw conclusions about the effectiveness of the cloud seeder. Together with the ETH and our partners from the hail committee, we will analyse the data for the last few years at the end of the pilot phase and discuss the best way forward,” says Thomas Schöb, Head of Claims and a member of the Executive Committee of Baloise Switzerland.

Baloise and hail

In recent years, Baloise has taken a holistic approach to the subject of thunderstorms and hailstorms by using a variety of innovations in the field of claims prevention and claims processing. After major hailstorms, Baloise sends a text message or email to all customers based in the affected area at the time to ask them if they have suffered any damage. This is part of the company’s proactive customer support. If a customer has suffered damage, they can simply click on a link included in the message from Baloise to submit a claim straight away. In addition, Baloise sets up temporary ‘drive-in hail checkpoints’ in areas that have been affected by a major event. Customers can take their vehicle there and have it inspected by an expert who can advise them on the repair and insurance payout options available to them. This ensures that claims can be processed in a quick and straightforward manner, especially after a major event. 


Portrait Nicole Hess

Nicole Hess

Media spokeswoman


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About us

The Baloise Group is more than just a traditional insurance company. The changing security, safety and service needs of society in the digital age lie at the heart of its business activities. The 7,900 or so employees of Baloise therefore focus on the wishes of their customers. The best possible customer service, combined with innovative products and services, makes Baloise the first choice for people who want to feel ‘simply safe’. Located at the heart of Europe, with its head office in Basel, the Baloise Group is a provider of prevention, pension, assistance and insurance solutions. Its core markets are Switzerland, Germany, Belgium and Luxembourg. In Switzerland, the Group also operates as a specialised financial services provider, offering a combination of insurance and banking services. The Group offers innovative pension products to retail customers throughout Europe from its competence centre in Luxembourg. Bâloise Holding Ltd shares are listed in the main segment of the SIX Swiss Exchange.

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