"Will Hand" wrote in message
...
0705

Overnight min +0.0 Current temperature +0.3 deg C.
Just too much wind overnight (1-3 knots) for lower temperatures.
Probably -2 or -3 deg C in the well known frosty spots in the South Hams
or in
the Teign Valley.
Lovely sunrise again over Lyme Bay, though a tad more murky than
yesterday.

Will.

-3°C on the Exeter and Bournemouth METARs earlier and -4°C at Yeovilton.

Jon.

wrote in message
oups.com...

Will Hand wrote:
0705

Overnight min +0.0 Current temperature +0.3 deg C.

Er, forgive me for the intrusion, but the last time I did this sort of
thing 0.0 C was a frost. Water freezes at zero (given the right
conditions).

As others have said 0.0 is the melting point of ice not the freezing point of
water. Water can exist in a supercooled state to very low temperatures.


If 0.0 is not now recognised as a frost, then I demand that 20 years of
Open Road verification figures be re-assessed in the forecasters favour.


It's always been a frost at -0.1 not at 0.0 !

Will.
--

Will Hand wrote:


It's always been a frost at -0.1 not at 0.0 !

Will.
--

Please convey this 'news' to the Open Road verification people, next
time you see them.

By the way, we definitely did have an air frost last night: -2.0C.

Adrian (12 miles ESE Aberystwyth, 260m/860ft asl)
--
Adrian Shaw ais@
Adran Cyfrifiadureg, Prifysgol Cymru, aber.
Aberystwyth, Ceredigion, Cymru ac.
http://users.aber.ac.uk/ais/weather/ uk

Will Hand wrote:

0705

Overnight min +0.0 Current temperature +0.3 deg C.
Just too much wind overnight (1-3 knots) for lower temperatures.
Probably -2 or -3 deg C in the well known frosty spots in the South Hams or in
the Teign Valley.
Lovely sunrise again over Lyme Bay, though a tad more murky than yesterday.

Hi Will,

-3.3 deg. C last night in Dartington. Climbed to the dizzy height of
+9.7 C during the day. Currently (21:40) down to +0.4C - almost
identical to the same temperature this time yesterday evening.

What a beautiful day it was today!

All the best,
Richard.

On 2 Nov 2006 10:15:22 -0800, wrote:


Will Hand wrote:

It's always been a frost at -0.1 not at 0.0 !

Please convey this 'news' to the Open Road verification people, next
time you see them.

As the road surface temperature can be several degrees different from
the air temperature and forecasts of air and road surface temperature
cannot be made to an accuracy of one tenth of a degree, bringing
'Open Road verification' into this debate seems a bit pointless.

--
Dave

"Dave Ludlow" wrote in message
...
On 2 Nov 2006 10:15:22 -0800, wrote:


Will Hand wrote:

It's always been a frost at -0.1 not at 0.0 !

Please convey this 'news' to the Open Road verification people, next
time you see them.

As the road surface temperature can be several degrees different from
the air temperature and forecasts of air and road surface temperature
cannot be made to an accuracy of one tenth of a degree, bringing
'Open Road verification' into this debate seems a bit pointless.


Ah but it does help to grind an axe :-)

Will.
--