Usually, the prevailing south-westerly wind would take the ash cloud away from Europe and over the polar region, but a high-pressure area is bringing it over Europe, where it is sitting and barely moving as the ash spreads.

BBC: Volcano cloud threatens Formula 1 preparations

In Asbury Park, New Jersey, a traditional polar bear club plunge into frigid waters had to be postponed because of the single-digit wind chill.

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