On 22 June, 17:51, "Darren Prescott" wrote:
I note with some trepidation that GFS has been gunning for some very high
dewpoints in the coming week. In the 12z GFS, that reaches a ridiculous
extreme in a week:

http://i43.tinypic.com/sq5cba.gif

If that were to come off there'd be no end of moaning from Joe Public.

As a side note, it's been pleasant here in Kent, with dewpoints in single
figures this afternoon. A stark contrast to the rest of the UK, with the
Bristol area for example "enjoying" dewpoints of 17 or 18C as I write this.

I was going to ask where all this moisture has come from, seeing that we
have an easterly flow, it's not been especially wet in the past few days and
the sea's not even 15C. However, checking the archives I see Tudor Hughes
asked the same question back in 2003 - and the consensus then was that it
was evapotranspiration.

My 9-mile bike ride into town at 3pm today was probably the most
sweaty this year - I'm not looking forward to my rides later in the
week...