August 31st, 2011

Tropical Storm Katia

Posted at 9:08 AM ET

katia-smallKatia became the eleventh named storm of the 2011 Atlantic hurricane season after it developed on August 30 to the south of the Cape Verde Islands. The storm is currently located approximately 985 miles (1,585 kilometers) west of the Cape Verde Island and packs sustained winds of around 65 mph (100 kmph), equivalent to a strong tropical storm, according to the National Hurricane Center (NHC). Katia is traveling in a west-northwest direction and is expected to maintain this general motion for the next couple of days. The NHC said tropical storm force winds extend 85 miles (140 kilometers) from the center of the storm.

Forecasters expect the storm to maintain its general west-northwest course for much of this week before taking a more northwesterly track. This path will see Katia continue to move across the mid-Atlantic and pass to the north of the Leeward Islands early next week. The official NHC prediction has Katia strengthening over the 5 day forecast range, with forecasters expecting the storm to intensify into a category 1 hurricane later today. Further strengthening is predicted thereafter as Katia moves into a favorable environment for intensification. Current forecasts expect Katia to be a category 3 hurricane by September 4. The storm poses no immediate threat to land and it remains unclear at this stage whether it will impact the United States, Bermuda or the Caribbean. According to reports, forecasting models show the system eventually curving away from the United States coastline but long term forecasts are subject to change.


Hazard data illustrated in the CAT-i map was taken from i-aXs®, Guy Carpenter’s web-based risk management platform. i-aXs users can view impacted areas on any map as well as see how their portfolios were affected. Please contact your broker or GC Analytics (SM) representative for assistance or go to for further information.

Separately, Tropical Storm Jose, the tenth named storm of the 2011 Atlantic hurricane season, developed to the south-southwest of Bermuda on August 28. Although tropical storm warnings were issued for Bermuda, forecasters said tropical storm conditions remained offshore. Reports said only moderate gusty winds and intermittent showers were observed in Bermuda and no significant damage was reported. Jose subsequently dissipated south of Nova Scotia on August 29.

Sources: National Hurricane Center, WSI, Associated Press, Reuters News, Agence France Presse

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Guy Carpenter publishes CAT-i reports for major natural catastrophes worldwide. These reports cover catastrophes including worldwide tropical cyclones, earthquakes, major UK and European floods and any other natural event that is likely to incur a significant loss to the (re)insurance industry. Please email if you wish to be added to the free email distribution list.

Guy Carpenter compiles RISK-i reports for major technological or man-made events worldwide. These reports cover risks to property, transport and life including explosions, fires, crashes, engineering disasters and terrorist attacks that are likely to incur a significant loss to the (re)insurance industry. Please email if you wish to be added to the free email distribution list.

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