On Sep 24, 1:46*pm, Dawlish wrote:
On Sep 23, 7:20*pm, "Keith(Southend)"
wrote:

Seems to be consistency in all the models for a northerly plunge next
week as we enter the month of October.

September is turning out another very dry month here in Southend-on-Sea,
with currently only 8.0mm of rain (17% average), as it stands it will be
second driest after 1997 (7.6mm), 1985 (9.7mm, 3rd driest) temperatures
are also standing at 1.0°C above average.
--
Keith (Southend)http://www.southendweather.net
e-mail: kreh at southendweather dot net

There certainly *was* Keith!

I find the turn of events over this last week really interesting. 6
days ago, the models picked up the re-establishment of the high
pressure. The consistency and agreement was enough for me to forecast
at 10 days and barring something very strange, that forecast looks as
if it will be good. However, a short time after my forecast for the
29th, the ECM massively, then, to a lesser extent, the gfs showed a
northerly, which is likely not to occur. This "faux-northerly" stayed
on the charts for a couple of days and then over the last 36 hours has
been erased.

If the high pressure does dominate on the 29th and I'd be 90% certain
of that at 4 days, my question is this: what happened to allow the
models (gfs in particular) to be correct at forecasting out to 10
days, but then during that same forecasting window, be so incorrect at
forecasting at a week's distance? It's bizarre!