"Jon O'Rourke" wrote in message
...
"Nigel Paice" wrote in message
...
... or anyone with expertise on rainfall radar.

This evening it rained hard (and I mean, hard) in
Romsey. The total duration of the shower was
70 minutes (1850-2000Z) and dropped 8.2mm
of rain. The cloud responsible developed and
decayed overhead.

Looking at the rainfall radar picture from the Met
Office website, I was astonished to see nothing in
my area, not a single pixel. Jon, do you have
rainfall radar of finer resolution that might have
picked up this downpour? Would I be right in
thinking that very localised rain may not register,
no matter how intense the ppn?

Cheers,

Nigel

Hi Nigel,
I didn't see the imagery at the time I'm afraid so can't say for certain
but
I'd hazard a guess that the high resolution data from the Dean Hill radar,
and perhaps Chenies too, would have captured something. I had a look at
the
visible imagery still available and I think the offending
cloud/development
is discernable on the 18Z image
e.g. http://www.metbrief.com/Images/romsey_shower.jpg

Cheers,
Jon.


Thanks for the satellite picture, Jon. I knew I could count on you
to find some evidence for our 'power shower' yesterday evening
but the complete absence of rainfall echoes is bizarre, for the rain
was falling at 30-40mm/hr for some 5 minutes. Although the torrent
covered a remarkably small acreage, it fell over a populated area, so
it is likely that 20,000 people or more, bore witness to the deluge.

I can now see exactly where Romsey is situated, courtesy of that
tiny blob of cloud on the visible image.

All the best,

Nigel