April storm Arlene sets Atlantic record

Storm Arlene is the first named storm of 2017 and becomes only the second April tropical storm on record.

    We recently reported on the rare sight of a subtropical depression forming in the Atlantic Basin, long before the official hurricane season, which does not begin until June 1.

    Well, not only did this subtropical depression persist despite chilly ocean temperatures of just 20C, it actually formed into a tropical storm on April 20.

    Although it was short-lived, the storm was given the moniker Arlene, making it the first named storm of 2017.

    It also became just the second tropical storm on record in April, since satellite technology became available in the 1960s (the first such storm was Ana in 2003).

    In addition, Arlene was the most northerly forming storm this early in the year.

    Although Arlene was located in a relatively isolated part of the Atlantic basin, between Bermuda and the Azores, it was a hazard to shipping in the region, with wave heights analysed at 13 metres by NOAA's Ocean Prediction Center.

    Arlene was downgraded to an extratropical storm sometime after the last advisory from the National Hurricane Center at 09:00 GMT on Friday.

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    On the face of it, the Atlantic hurricane season has exhibited increasingly erratic behaviour in recent years.

    As recently as 2016, Hurricane Alex became the first January hurricane in more than half a century. It was also the strongest January hurricane recorded with sustained winds of 135 kilometres per hour.

    In 2014, two hurricanes, Fay and Gonzalo, hit Bermuda within the space of a week.

    The year 2013 was notable for an almost total lack of hurricane activity, while 2012 will be remembered for Hurricane Sandy, which was one of the largest hurricanes on record, according to its wind field. Sandy was then swept up into a frontal system which brought damaging winds and destructive coastal surges to the eastern seaboard of the United States.

    The forecast for 2017 remains for a season of slightly below average activity, but with hurricanes, you can never be sure.

    SOURCE: Al Jazeera and news agencies


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