The METARs from Stornoway have shown temperatures up to 24c this afternoon
which, I think, would be close to the June record. I then had a look at the
Stornoway SYNOPs which tell a somewhat different story. SYNOP/METAR temperature
comparisons for today a

0450z 12.5/13
0550z 13.6/16
0650z 14.9/16
0750z 15.9/17
0850z 16.2/19
1150z 18.9/22
1450z 21.3/23

The SYNOPs are from an AWS. I assume the METAR temperatures are from a
different source. Nevertheless, the size of the difference is surprising unless
the two sets of instrumentation have quite different exposure.


--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.