Fog formed around 2200Z yesterday and to the best of my
knowledge, has persisted ever since. A slight frosty sheen
on some horizontal surfaces but no rime detected. Having
written that, I will report FZFG in the METAR because the
air temperature is below zero Celsius to follow convention
but I will not enter code 49 in the present Synop weather.

As is often the case in these situations, there is a northeast
drift draining off the fields.

SYNOP 11/0850Z (current ob)
03/// 41/01 90403 11004 21004 40307 55000 74644 333 92600=

METAR
EG// 110850Z 04003KT 0150 FZFG VV/// M00/M00 Q//// RED=

Details:
wind... NE, force 1.
visibility... 150m, thickened from 200m an hour ago.
weather... dense fog.
clouds... sky obscured.
dry bulb... -0.4C.
dew point... -0.4C.
RH... 100%.
sea level pressure... 1030.7mb (minor changes).
max temp yesterday... +10.3C.
min temp last night... -0.9C.
24 hour rainfall... 0.1mm (w).

beaufort letters (0750-0850Z)... ffx,Fx.

Nigel (Romsey, Hampshire)
40m amsl

Firstly I must apologise for heading my report [WR] instead of [OBS]
and I miskeyed the present weather '46' instead of '47' (now amended),
even though I had written down the correct figure on paper. Somehow
I managed to lose a digit in the transfer to the computer! It's obviously
been too long since my last manual observation on here.

Back to the weather. At 1120Z, the fog rapidly parted in the northeast
quadrant and the visibility shot up to 3000m in that direction. It was a
pity that the wind decided to shift into the west and is bringing the grot
out of the Test Valley back across us while the visibility has closed in to
1300m to the northeast. It's never been better than 400m to the west all
morning.

During the brief clearance, there was a little warmth in the sun despite
the extensive thin cirrus cover and the temp climbed to 3.8C (it has
dropped back 1 degree in the last 10 minutes).

SYNOP 11/0850Z
03/// 41/01 90403 11004 21004 40307 55000 74744 333 92600=
----------------------------------------------------------------
SYNOP 11/1150Z (current ob)
03/// 31904 72802 10026 20023 40301 58006 74144 80001 333 87078=

METAR
EG// 111150Z 28002KT 0400 PRFG BKN280 03/02 Q//// RED=

Details:
wind... W by N, force 1.
visibility... 400m, improved slightly from 300m an hour ago.
weather... fog bank.
clouds... 7/8 Ci at 28000ft.
dry bulb... +2.6C.
dew point... +2.3C.
RH... 98%.
sea level pressure... 1030.1mb (now falling).

beaufort letters (1050-1150Z)... cf,cif.

Nigel (Romsey, Hampshire)
40m amsl

We finally clambered out of fog locally at 1305Z but it's still sitting
there to the northwest, shrouding stretches of the River Test with
only one hour left until sunset.

On a trip to Winchester early this afternoon, the car thermometer
registered +10C in places but we've only just nosed past +7C here
and beside the river it was +4C (at 1345Z). The visibility east and
south of Romsey is in the order of 10 to 15km but only 2800m to
the nearest fog patch, northwest of here.

SYNOP 11/0850Z
03/// 41/01 90403 11004 21004 40307 55000 74744 333 92600=
----------------------------------------------------------------
SYNOP 11/1150Z
03/// 31904 72802 10026 20023 40301 58006 74144 80001 333 87078=
----------------------------------------------------------------
SYNOP 11/1450Z (current ob)
03/// 41928 71005 10074 20056 40284 57017 74042 81032
333 81368 87075=

METAR
EG// 111450Z 10005KT 2800 VCFG FEW180 BKN250 07/06
Q//// YLO1=

Details:
wind... E by S, force 2.
visibility... 2800m (NW).
weather... fog in the vicinity.
clouds... 1/8 Ac at 18000ft, 7/8 Ci at 25000ft.
dry bulb... +7.4C.
dew point... +5.6C.
RH... 88%.
sea level pressure... 1028.4mb (falling).

beaufort letters (1350-1450Z)... cjf.

Nigel (Romsey, Hampshire)
40m amsl