What a lovely day! Very little wind, snow showers and temperatures
below freezing all day.
Started of with 2cm of dry snow on a hard frozen ground after further
overnight snow showers. Temp -1.6 and dp -9.8 at 06z. Air temp
remained -1 to -2 all day, but dp rose from mid-morning to late
afternoon as a sequence of large slow-moving CBs travelled west
across Fair Isle. Vis to 300m and sky obscurred on several occasions
as moderate snow showers brought the snow depth up to 6cm of powder
snow!
My CODET laptop has failed, so I'm having to e-mail obs through.
Though I regularly use the MO slide-rule to work out the RH from the
dewpoint of the ob sent by CODET, I cannot remember the last time I
had to use it to calculate a 'dewpoint' from an ice-bulb!
Dave
Fair Isle