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The effect of increased precip rate I was referring to was more
specifically _during_ a fairly steady downpour: it's raining hard
already, then following a nearby lightning bolt/thunder, the intensity
increases incrementally. It doesn't always happen, but each such
instance seems to coincide with the thunder. As Chris Luginbuhl
notes, someone (ahem) needs to watch a few storms and get some
statistics.
The French Meteosat image taken a few hours after the early-morning
storm in Strasbourg showed an isolated Cb tower off to the east of us,
so evidently that was the one we got. Strasbourg received more showers
yesterday afternoon (21 June), including another quite intense storm.
Again, the nearby lightning strokes produced a softened sizzling attack
in thunder sound (these strokes hit within 100-200 meters) like water on
a hot frying pan, and generally lacking in low frequencies. The buildings
in the area indeed have scales and separations on the few tens of meters
scale, and so Chris' suggestion about acoustic damping might work. Any
atmospher-acousticians out there?
\Brian
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