Tag Archives: Willis Research Network

Managing severe thunderstorm risk: Looking beyond the weather forecast

As we reach the middle of Spring, the U.S. hail and tornado season is in full swing. March is a changeable month, in weather-terms. There’s an old saying that goes something like this: “March comes in like a lion, goes … Continue reading →

Waiting for the dust to settle: The effects of volcanic ash on the aviation industry

In April 2010 Iceland’s Eyjafjallajökull volcano erupted, wreaking havoc across European airspace. At its maximum impact, 75% of all European airline operations were closed. Over seven days of disruption, 10 million people were unable to travel and airline losses reached … Continue reading →

Earthquake hazard in a 3D world

The latest advances in computing now allow for 3D simulation of wave propagation; techniques simply not available to us previously. This will allow us to better understand the rupture and resulting ground motions of the largest earthquakes in greater detail. … Continue reading →

Earthquakes converse by the transfer of stress: The strong evidence for short-distance, long-period interactions

During the 75 years before the great 1906 earthquake on the San Andreas fault, the San Francisco Bay area suffered at least 14 shocks of moment magnitude (Mw) equal to or exceeding 6; these occurred on all major faults, and … Continue reading →

Earthquake aftershock zones are actually global

Triggering occurs as a result of the redistribution of stress induced by an earthquake. Differentiating triggered events from normal background seismicity is a key objective in studies of earthquake triggering. During the 1990s there was substantial evidence that earthquake sequences, spaced in time and space, are being triggered by the previous events. Continue reading →

How well do we really understand earthquake potential?

The last decade has seen some of the most devastating earthquakes to society, with some 630,000 lives lost since 2000 due to earthquakes and corresponding cascading hazards like tsunamis and landslides—and economic losses of over US$ 500 billion. This could … Continue reading →

The Impact of the North Atlantic Oscillation on European Windstorms

Windstorms are the largest driver of annual insured losses in Europe. One way to predict the likelihood of windstorms occurring at time-scales longer than typical weather forecasts is to investigate teleconnection patterns. Teleconnection patterns are recurring and persistent large-scale patterns … Continue reading →

How to model a windstorm

Storm Angus hit the U.K. earlier this month (also known as Nannette as designated by the Free University of Berlin). Although insurance industry losses are not expected have much impact on the reinsurance industry, the storm did produce high winds … Continue reading →

Huracán Matthew

El huracán más mortal en 11 años llegó hace unos veinte días. Después de hacerse camino a través del Caribe, por Haití y al oriente de Cuba, a través de las Bahamas y luego a lo largo de la costa este … Continue reading →

Matthew

The deadliest hurricane in 11 years has struck around a fortnight ago. After tearing a path through the Caribbean, across Haiti and Eastern Cuba, through the Bahamas and then along the east coast of the U.S., it was finally absorbed … Continue reading →