"Philip Eden" philipATweatherHYPHENukDOTcom wrote :

0920z Calm 20km? VCFG 1Ac150 3Ci220 01.2/00.0 1015.2
RMK: Vale of Aylesbury filled with fog ... top of fog around
130-140m amsl. (Shortage of visibility points above the fog).
At time of writing (1010z) also some shallow fog patches at
my site. Moderate hoar/rime, and ground frozen. Thick fog
formed around midnight and was still there at 03z, all the time
shallow enough for the moon to shine strongly through it.

1250z Var F1 200m BCFG 5St000 01.0/00.8 1014.7
RMK: Fog has been coming and going all morning although
the sun has been in attendance most of the time until the
last 15 minutes

Philip Eden
Whipsnade 214m