No doubt the recent posters in uk.sci.weather who noticed flurries of
snow today will also have noticed that the deepest build up of
precipitation had formed in areas immediately surrounding buildings,
which they might also have noticed, are places where the wind can seem
the most powerful.

When viewed along sea shore, such situations always puzzled me. Sand
bars are deposited where currents seem the most "boisterous". And this
is why precipitation falls out of fronts:

Carried in a stream which permits no egress, having in solution the
vapours concerned with rain, the various air streams have to have a
radical change in temperature and/or pressure for rain to fall.

With sea currents, the precipitation is not in solution and is carried
no farther than simple laws of dynamics permit. And the outside forces
that come into play occur when rapid currents run alongside slower
moving or immobile stretches of water and sand bars tend to build up
where counter currents are evolved.