Looking on the charts there's a front over the central UK, which hasn't
moved much in the last couple of days.

However there's a big area of rain moving from West to East on the current
radar (12.00)

Is this unusual? Don't most areas of rain move with associated frontal
systems?

Thanks,
- Michael

This is waving front with a mix of warm/cold fronts, together with small low
pressure areas running along with it. hence the areas of greater rainfall
embedded along it from time to time. It will be warm and muggy to the south
of it, any notable length of sunshine will produce temps around 24°c as
these areas lie in the warm sector.

Keith (Southend)
http://www.southendweather.net

"MichaelJP" wrote in message
. ..
Looking on the charts there's a front over the central UK, which hasn't
moved much in the last couple of days.

However there's a big area of rain moving from West to East on the current
radar (12.00)

Is this unusual? Don't most areas of rain move with associated frontal
systems?

Thanks,
- Michael

"keith.r.harris" wrote in message
...
This is waving front with a mix of warm/cold fronts, together with small
low
pressure areas running along with it. hence the areas of greater rainfall
embedded along it from time to time. It will be warm and muggy to the
south
of it, any notable length of sunshine will produce temps around 24°c as
these areas lie in the warm sector.

Keith (Southend)
http://www.southendweather.net

Fair enough, but why do these small low pressure areas not show up on the
charts, or indeed on the METAR record. Are they not measurable?

(I was taking a look at the Blackpool METAR record from this morning and
pressure has been static at 1014 despite rain arriving)

It all seems a lot more complicated than the example low pressure areas I've
been doing on my MET course!

- Michael


"MichaelJP" wrote in message
. ..
Looking on the charts there's a front over the central UK, which hasn't
moved much in the last couple of days.

However there's a big area of rain moving from West to East on the
current
radar (12.00)

Is this unusual? Don't most areas of rain move with associated frontal
systems?

Thanks,
- Michael

"MichaelJP" wrote in message
. ..
Looking on the charts there's a front over the central UK, which
hasn't
moved much in the last couple of days.

However there's a big area of rain moving from West to East on the
current radar (12.00)

Is this unusual? Don't most areas of rain move with associated frontal
systems?

"MichaelJP" wrote in message
. ..

"keith.r.harris" wrote in message
...
This is waving front with a mix of warm/cold fronts, together with small
low
pressure areas running along with it. hence the areas of greater
rainfall
embedded along it from time to time. It will be warm and muggy to the
south
of it, any notable length of sunshine will produce temps around 24°c as
these areas lie in the warm sector.

Keith (Southend)
http://www.southendweather.net

Fair enough, but why do these small low pressure areas not show up on the
charts, or indeed on the METAR record. Are they not measurable?

(I was taking a look at the Blackpool METAR record from this morning and
pressure has been static at 1014 despite rain arriving)

It all seems a lot more complicated than the example low pressure areas
I've
been doing on my MET course!

- Michael

Commenting to my own post, but on the evening forecast yesterday they did
indeed show a small low pressure system moving from west to east over the
day.

Still don't quite understand why the surface pressure didn't change though -
maybe an upper atmosphere effect?

The reason it was troubling me was that looking at the synoptic chart for
that morning, there didn't seem to be any indication of a system that
brought quite a bit of rain to these parts - making those charts less useful
for forecasting than I thought they would be.

- Michael

"MichaelJP" wrote in message news:40f781b6$0$28802


snip

I've
been doing on my MET course!

- Michael

snip

The reason it was troubling me was that looking at the synoptic chart
for
that morning, there didn't seem to be any indication of a system that
brought quite a bit of rain to these parts - making those charts less
useful
for forecasting than I thought they would be.

.... this morning's 0600 ASXX (analysis at 0700 clock time) is
instructive he the 'focus' of the precipitation (itself forced/fed by
upper pattern dynamics) would seem to be the fronts drawn as *upper*
features on this chart, but of course the surface fronts are still
important for things like air-mass analysis, low cloud, visibility etc.
This 'split' between whats happening on the surface and at 'mid' levels
is often the case at this time of year.

Martin.


--
FAQ & Glossary for uk.sci.weather at:-
http://homepage.ntlworld.com/booty.weather/uswfaqfr.htm

http://www.weather.org.uk/charts/UKCpf000.gif

"Martin Rowley" wrote in message
...

"MichaelJP" wrote in message news:40f781b6$0$28802


snip

I've
been doing on my MET course!

- Michael

snip

The reason it was troubling me was that looking at the synoptic chart
for
that morning, there didn't seem to be any indication of a system that
brought quite a bit of rain to these parts - making those charts less
useful
for forecasting than I thought they would be.

... this morning's 0600 ASXX (analysis at 0700 clock time) is
instructive he the 'focus' of the precipitation (itself forced/fed by
upper pattern dynamics) would seem to be the fronts drawn as *upper*
features on this chart, but of course the surface fronts are still
important for things like air-mass analysis, low cloud, visibility etc.
This 'split' between whats happening on the surface and at 'mid' levels
is often the case at this time of year.

Martin.

Thanks, Martin - it's certainly complicated!

FAQ & Glossary for uk.sci.weather at:-
http://homepage.ntlworld.com/booty.weather/uswfaqfr.htm

http://www.weather.org.uk/charts/UKCpf000.gif