On Mon, 10 Oct 2005 21:59:38 GMT, "Alex Stephens Jr"
wrote:

I never noticed the echo or overlooked it (I have avbrief subscription
also). I am certain there was a far far greater area of precipitation than 4
pixels worth, even if it was at lower (but still moderate/heavy) rates.
It was raining moderately or heavily most of the morning after 9:30am (aside
from this heavy burst), but the radar wasn't showing anything of it. And
then the local precipitation all appeared on radar at 11.30am or so as if by
magic. Or perhaps someone read the post here and flicked a switch.
I wonder if they have some sort of override in place to ignore potentially
false echoes? And with rain not forecast in this area this morning -
certainly not torrential rain - such an override was in place?
Alex.

Aaaah yes, that indicates to me a radar calibration issue that was
finally noticed when ground observations failed to match the radar
displays. I, too, noticed the sudden "switch" to widesptread echoes
later in the morning.

On the other hand, it was an absolutely fabulous sunny summery day
down here by The Solent. it was literally shirtsleeves weather - I
went on a most pleasant late afternoon bike ride wearing, above the
waist, only a thin T shirt. Wonderful weather for mid October!

Cheers,

Dave
Fareham.