Storm Joachim Hits Northern Europe; AIR Sees No ‘Significant’ Losses

December 20, 2011

Catastrophe modeling firm AIR Worldwide, has reported on winter storm Joachim, which developed over the Atlantic and became a severe extra-tropical cyclone over Western Europe late last week. Central pressure went as low as 963.8 mb and wind gusts exceeding 150 km/h [94 mph]. The storm’s strength was akin to that of a weak hurricane.

Joachim’s warm front carried warm and moist air into Europe, causing heavy rain and snow in combination with high winds. The storm caused power outages and travel disruption in France, Germany, and Switzerland.

AIR noted that “Joachim caused widespread power outages in northern and western France, with some 300,000 households losing electricity. Coastal flooding was reported in several coastal departments, including Gironde, Charente-Maritime, Vendee, Loire-Atlantique, Morbihan, and Finistère.”

Dr. Gerhard Zuba, senior principal scientist at AIR Worldwide, explained: “As with most cyclones in the northern hemisphere, Joachim’s strongest winds were on the south, or right-hand, side of the track, meaning damage in the UK was very limited. France experienced strong winds over much of the country. Twenty-four hour rainfall accumulations exceeded 50 mm [1.7 inches] in some regions, according to Météo-France.”

Dr. Zuba also pointed out that “the region affected by Joachim is similar to that of winter storm Xynthia in 2010, although Joachim’s wind speeds are generally lower, Xynthia’s arrival along France’s central Atlantic coast coincided with high tide, causing violent waves that overtopped sea walls and washed away roads and houses. Wind damage from Xynthia was not the primary source of losses to property. Likewise, at Joachim’s recorded wind speeds, wind damage to well-constructed buildings is likely to be nonstructural in nature, typically restricted to roofs and windows, or caused by toppled trees.”

There have been no reports of substantial damage to property, and AIR said it “does not currently expect significant insured losses from winter storm Joachim.”

According to AIR, the center of the storm moved into Belgium and then Germany on the morning of the 16th, bringing gale-force winds and heavy precipitation to wide swaths of northwestern Europe. In the mountains of Switzerland and Austria, Joachim brought welcome snowfall to Alpine resorts after an unseasonably dry start to the ski season. Recorded wind gusts in Switzerland exceeded 170 km/h [106 mph] in some mountainous regions.

Source: AIR Worldwide

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