When insurers think about catastrophic weather, hurricanes tend to dominate the conversation.
They have names. They have forecasts. They trigger days of preparation and wall-to-wall coverage as they approach the coast.
But some of the insurance industry’s biggest weather losses are increasingly coming from storms that receive far less attention.
Severe thunderstorms.
According to Verisk’s 2026 Global Modeled Catastrophe Losses Report, severe thunderstorms now account for 40% of modeled global insured catastrophe risk, compared with 27% for tropical cyclones. Earthquakes account for 10%, followed by winter storms at 9%, floods at 7%, and wildfires at 6%. (Source)
That makes severe thunderstorms the single largest contributor to Verisk’s modeled insured average annual loss.
For insurers, it is a reminder that catastrophe risk is not always catastrophic in the way we traditionally imagine it.
The Rise of the “Everyday” Catastrophe
Severe convective storms can bring hail, tornadoes, damaging winds, lightning, and flash flooding. Unlike a major hurricane, they can happen repeatedly across different regions throughout the year.
One storm may not generate the losses associated with a major hurricane landfall. But dozens of storms hitting homes, businesses, vehicles, energy infrastructure, and other property can add up quickly.
That frequency is changing the risk equation.
Verisk estimates that global insured catastrophe losses should now be expected to average approximately $171 billion annually, up $19 billion from its estimate a year earlier and the highest figure the company has reported. The United States represents about $117 billion, or 68%, of that modeled risk. (Source)
And those losses are not being driven by weather alone.
More Things Are Sitting in Harm’s Way
One of the biggest factors behind rising catastrophe losses is exposure.
Homes are being built in high-risk areas. Property values have risen. Reconstruction is more expensive. New energy infrastructure and data centers are being developed in areas vulnerable to hail, wind, flooding, and tornadoes.
Verisk reported that U.S. residential reconstruction costs increased 3.2% from April 2025 to April 2026, while commercial reconstruction costs rose 4.1%. (Source)
So even when the frequency of a particular weather event does not dramatically change, the financial consequences can.
A thunderstorm hitting an open field is one thing. The same storm moving across a growing suburb, solar installation, distribution center, or data center campus is another.
Technology Has to Follow the Risk
This shift creates an important opportunity for InsurTech.
Traditional catastrophe models remain essential, but insurers increasingly need more granular and dynamic ways to understand exposure.
Property intelligence, satellite imagery, computer vision, IoT sensors, weather analytics, and geospatial data can help insurers understand not simply where a property is located, but its condition and vulnerability.
That intelligence can influence underwriting and pricing, but it can also support prevention.
If an insurer can identify a vulnerable roof before hail arrives, understand which commercial properties have elevated flood exposure, or alert a policyholder before severe weather hits, insurance begins moving from reacting to losses toward helping reduce them.
The Risk Map Is Changing
Hurricanes are not becoming irrelevant. A major landfall can still generate enormous losses, and Verisk estimates a severe catastrophe year could produce losses approaching three times its $171 billion annual average. (Source)
But catastrophe strategy can no longer revolve around waiting for the next named storm.
The bigger shift may be toward managing frequent, distributed events that individually look smaller but collectively create enormous losses.
For insurers, the storm worth watching may not always have a name.
