"Jon O'Rourke" wrote in message
...
"Edmund Lewis" wrote in message
oups.com...

snip
Ceefax p404 does that, yes, as do many newspapers ("Shrewsbury" is
Shawbury), I suppose to give familiar names rather than those of
airfields which mean nothing to so many. I've never seen Bolton (or
something claiming to be Bolton) on that page though.
On 407 you often see places that never appear on 404, I expect they get
that from both the 404 sites and other sources.

Yes, I'm still puzzled, Edmund. Particularly as, IIRC, CDLs don't provide
max. temperatures which would presumably rule them out. I've quizzed a
colleague at the Beeb to see if he can throw any light on it.

I thought I'd done that.

Philip Eden

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
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"Jon O'Rourke" wrote in message
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"Edmund Lewis" wrote in message
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snip
Ceefax p404 does that, yes, as do many newspapers ("Shrewsbury" is
Shawbury), I suppose to give familiar names rather than those of
airfields which mean nothing to so many. I've never seen Bolton (or
something claiming to be Bolton) on that page though.
On 407 you often see places that never appear on 404, I expect they get
that from both the 404 sites and other sources.

Yes, I'm still puzzled, Edmund. Particularly as, IIRC, CDLs don't
provide
max. temperatures which would presumably rule them out. I've quizzed a
colleague at the Beeb to see if he can throw any light on it.

I thought I'd done that.

Philip Eden

As before.. I'd go along with the CDL idea if we know for certain that they
provide maximum temperatures but, as I said, I didn't think they did.

I notice page 407 is currently giving Manchester 30C (Woodford was 28C)
as the maximum... odd.

Jon.

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

"Col" wrote in message
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"Ken Cook" wrote in message
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Warmest in UK, according to Ceefax p.407, was Bolton at 30C, is that
your
station?

Goodness no, I'm afraid my ramshackle attempt at a temperature shield
would in no way count as a 'station'
However it is always heartening to see my own readings correlating
well with the official ones, especially the extreme ones.

Readings from Bolton have in the past year or so been reported on
the weather in the local news. I haven't noticed this before, it must be
a new site, and I am wondering as to it's location.....

It's part of a secondary network of AWSs called the CDL
(Campbell Data Logger) network run by the Met Office to
which I do not have access. If I remember rightly, and
I'm happy to be corrected, the Bolton site is on the southern
fringe of the town (Great Lever? Lever Edge?) and may
well be at a municipal depot. On that basis it may well be
above concrete or asphalt rather than grass. It may also be
that the temperature sensor is in one of those micro-screens
which over-read in comparison with a normal screen by
2-3 degC in calm sunny weather. I am told it recorded
30.6°C on Monday,

From the hourly data or a maximum ? Either way, if this data was being
ingested into Ceefax, and I would be quite surprised to find that it was,
then I would expect it to show 31C and not 30C (assuming a max before 18Z).

Jon.

"Jon O'Rourke" wrote in message
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"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
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"Jon O'Rourke" wrote in message
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"Edmund Lewis" wrote in message
oups.com...

snip
Ceefax p404 does that, yes, as do many newspapers ("Shrewsbury" is
Shawbury), I suppose to give familiar names rather than those of
airfields which mean nothing to so many. I've never seen Bolton (or
something claiming to be Bolton) on that page though.
On 407 you often see places that never appear on 404, I expect they
get
that from both the 404 sites and other sources.

Yes, I'm still puzzled, Edmund. Particularly as, IIRC, CDLs don't
provide
max. temperatures which would presumably rule them out. I've quizzed a
colleague at the Beeb to see if he can throw any light on it.

I thought I'd done that.

As before.. I'd go along with the CDL idea if we know for certain that
they
provide maximum temperatures but, as I said, I didn't think they did.

They do.

I notice page 407 is currently giving Manchester 30C (Woodford was 28C)
as the maximum... odd.

Manchester/Hulme. Another CDL site.

Jon, had I been uncertain I would have expressed uncertainty.

Philip Eden

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

me As before.. I'd go along with the CDL idea if we know for certain
that
they
provide maximum temperatures but, as I said, I didn't think they did.

pe They do.

Yes, I've since had that confirmed, but the max/min data only appears via
the 21Z CDL NCMs, not in the 18Z CDL SYNOPs.

Jon.

"Jon O'Rourke" wrote in message
...
"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

me As before.. I'd go along with the CDL idea if we know for certain
that
they
provide maximum temperatures but, as I said, I didn't think they did.

pe They do.

Yes, I've since had that confirmed, but the max/min data only appears via
the 21Z CDL NCMs,

....which is the proper source of climat. data ... for those fortunate enough
to have acess, that is.

not in the 18Z CDL SYNOPs.

....which is why the quoted Bolton figure on Monday was 30 and not
31 ...because someone had been monitoring the hourly temperatures
and publicised the highest hourly figure. This happens routinely during
hot spells, at Exeter, at the BBC, and elsewhere, as I'm sure you're
aware.

Philip Eden

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

Yes, I've since had that confirmed, but the max/min data only appears
via
the 21Z CDL NCMs,

...which is the proper source of climat. data ... for those fortunate
enough
to have acess, that is.

Indeed, but not all CDLs will be used for climat. purposes.

...which is why the quoted Bolton figure on Monday was 30 and not
31 ...

Yes, it all makes sense now.

Jon.

"Jon O'Rourke" wrote in message
...
"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

...which is why the quoted Bolton figure on Monday was 30 and not
31 ...

Yes, it all makes sense now.

Pleasure, as always. Perhaps it would have been quicker
and simpler if you'd asked directly for clarification of
anything I'd written.

Philip Eden

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

"Jon O'Rourke" wrote in message
...
"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

...which is why the quoted Bolton figure on Monday was 30 and not
31 ...

Yes, it all makes sense now.

Pleasure, as always. Perhaps it would have been quicker
and simpler if you'd asked directly for clarification of
anything I'd written.

Philip Eden

I was more interested in whether the original report had genuinely come from
Bolton and subsequently what data was going where, rather than anything
you'd written in particular, Philip. Perhaps my original intentions had
become blurred later in the thread.

Clarification to my original questions duly came from the MetO Climate
section.

Jon.

"Jon O'Rourke" wrote in message
...

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...


Pleasure, as always. Perhaps it would have been quicker
and simpler if you'd asked directly for clarification of
anything I'd written.


I was more interested in whether the original report had genuinely come
from
Bolton

Which was precisely my first contribution to the thread.

Philip Eden