A cold high south of the low is slowly moving eastwards along its latitude
The day when the low has developed into a hurricane. The position seems to be a little westerly
The eye of the hurricane passes right over the island
Here follows the weather-forecasts available at the Swedish Met Office in Norrkoping
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May 18 12UTC +72 hours
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May 18 12UTC +96 hours
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May 19 12UTC +48 hours
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May 19 12UTC +60 hours
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May 19 12UTC +72 hours
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May 20 12UTC +24 hours
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May 20 12UTC +36 hours
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Even the forecasts made on May 16th and 17th shows a similar picture for May 21-22.
Weathercharts - courtesy of SMHI/ECMWF
John Ekwall, SMHI (Swedish Met Office) June 22, 2001