In article , Ken Cook kencook@copley
durham.freeserve.co.uk writes
"Norman Lynagh" nospam@nospam.? wrote in message
...
The min of -9c at Carlisle looks a bit suspicious to me.

Hi, Norman,

Could well be - a lot of AWS are, but the screen min at Copley was
below -2C and we are on a hillside not noted for low minima. I estimate
Copley Mill would have been below -6C as were Topcliffe, Redesdale and
Teesside airport.

I stick by my suggestion that the computer forecast was not as bad as it
was thought to be.


I've also had a look at the Carlisle SYNOPs for the previous night, when
Carlisle reported a min of -5.0c. That also looks wrong. The hourly
temperatures and MSL pressures reported we


2200 3.5c 1007.3 mb
2300 3.5c 1003.1 mb
0000 -1.0c missing
0100 -0.3c 964.8 mb
0200 1.4c 996.4 mb
0300 SYNOP reported with all items missing
0400 0.7c 970.8 mb
0500 2.3c missing
0600 SYNOP reported with all items missing
except minimum of -5.0c
0700 SYNOP reported with all items missing
0800 4.1c missing

It certainly looks as if the Carlisle AWS is pushing out some spurious
values from time to time.

Norman.
--
Norman Lynagh Weather Consultancy
Chalfont St. Giles
Buckinghamshire