Maiden Holdings Ltd expects to post a $9.5 million loss from the thunderstorm and tornado activity across the US during the second quarter.While Maiden with its lower volatility business model is not a catastrophe-oriented reinsurer, the unusually high frequency of loss activity has impacted many of its clients in the south and Midwest.None of the anticipated second quarter loss activity is related to the large global catastrophes of the first quarter of 2011.American Safety Insurance Holdings Ltd has also estimated losses of $3 million to $4 million from the US storms in the second quarter.