“The European floods are estimated to have cost the reinsurance industry several billions of dollars – we estimate between $2-3 billion,” Berenberg said in a client note.
Other experts on Monday were scrambling to put a price tag on the total damage.
Reimund Schwarze, researcher with the Helmholtz Zentrum fuer Umweltforschung in Leipzig, said economic damage is expected at around 6 billion euros ($5.08 billion).
“It would be the most damaging heavy rain event that Germany has ever experienced,” he said.
For others, it was too early to make a call other than to say the damage would cost several billion euros.
Kai Schroeter, a researcher with GFZ German Research Centre for Geosciences in Potsdam, said important data sources to estimate damage were still not available, including maps of flooded areas and questions about other “cascading impacts” like oil spill.
“The situation is quite complex,” he said.
Berenberg also said overall losses would likely greatly exceed insured losses, with only around 45% of buildings in Germany insured against flood and heavy rain. In Belgium, such policies were standard so insurance coverage for the flooding was likely to be higher, the bank added.
Germany’s insurance industry may face the highest claims from storms, floods, heavy rain and hail since 2013, the head of industry association GDV said last week.
Severe weather in Europe between June 17 and 30 had already caused estimated insurance losses of a record $4.5 billion in the region, surpassing $4.3 billion set by Storm Andreas in 2013, insurance broker Aon said in a report earlier this month.
But mitigation measures put in place across Europe following previous floods had prevented last week’s flooding from becoming even more widespread, risk modelling firm RMS said.
Berenberg said major European firms Allianz, AXA, Generali and Zurich were likely among the insurers facing the biggest claims from the July floods.
Allianz would likely face claims of 200-300 million euros, AXA of 100-120 million euros, Generali of 200-250 million euros and Zurich of $140 million, Berenberg said.
(Reporting by Carolyn Cohn in London, Tom Sims in Frankfurt, Alexander Huebner in Munich, Muvija M. in Bengaluru and Michael Shields in Zurich; editing by Karin Strohecker and Nick Macfie)