On 2013-04-26 19:06:33 +0000, John Hall said:

In article ,
Andy Page writes:
A lot of whitish dust deposits on the car this morning after the light
rain of last night - typical after washing it yesterday! Anyone else
notice anything? No obvious dust plume upwind on MSG dust
imagery in the last few days.

Could it have been pollen rather than dust?

Yes, the tew tree in my garden emits great clouds of the stuff when the
wind blows at this time of year. The first time I saw it I thought the
next door neighbours had lit a bonfire just over the fence.