uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged.

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Old February 23rd 13, 12:13 PM posted to uk.sci.weather
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Default [OBS] Romsey - Saturday 23rd February 2013

This is the eighth day of the month to have recorded sleet or snow
falling which is more than our quota for an entire year but none has
settled.

Slight snow has been falling in the form of small flakes on and off
during the morning, although developing Cu mediocris cloud in the
last hour is producing a few larger ones together with snow pellets
1110-1120Z and 1145Z to present. Those pellets that land on my
car, roll off and crush onto the driveway. No effect on surfaces
and minimal on visibility.

A bitterly cold NNE'ly wind, though a number of sunny intervals
recently.

SYNOP 23/1150Z (current ob)
03/// 11465 70211 10014 21035 40216 52002 69901 78772 878//
333 85818 86645=

METAR
EG// 231150Z 02011KT 9999 -SHGS BKN018 BKN045 Q////
WHT=

Details:
wind... NNE, force 4.
visibility... 15km.
weather... slight showers of snow pellets and snow.
clouds... 5/8 Cu 1800ft, 6/8 Sc 4500ft.
dry bulb... +1.4C.
ice bulb... -0.5C.
dew point... -3.5C.
RH... 70%.
sea level pressure... 1021.6mb (rising slowly).
rainfall last hour... trace.
6 hour rainfall (0600-1200Z)... trace.

beaufort letters (1050-1150Z)... ciso,cphoso,cjp,cphoso.

Nigel (Romsey, Hampshire)
40m amsl




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Old February 23rd 13, 01:22 PM posted to uk.sci.weather
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Default [OBS] Romsey - Saturday 23rd February 2013

On 23/02/2013 12:13, Nigel Paice wrote:
snip
Slight snow has been falling in the form of small flakes on and off
during the morning, although developing Cu mediocris cloud in the
last hour is producing a few larger ones together with snow pellets
1110-1120Z and 1145Z to present. Those pellets that land on my
car, roll off and crush onto the driveway. No effect on surfaces
and minimal on visibility.

snip
Nigel (Romsey, Hampshire)
40m amsl


.... (23/1320Z): similar here a bit further west (or downstream) at West
Moors/East Dorset: light snow began ~1215Z, snow flakes (no pellets)
lazily floating down from time to time - initially from thick/overcast
lumpy Sc, but now more obviously Cu med as the Sc has broken up again.
No impact VIS/SFC.

Martin.

--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall
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Old February 23rd 13, 06:09 PM posted to uk.sci.weather
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Default [OBS] Romsey - Saturday 23rd February 2013

Occasional showers of snow through the afternoon and one of
snow pellets 1515-1525Z, the latter followed a longer period of
weak sunshine when the CuSc broke to half cover with 7/8ths of
cirrus above. All of the pptn remained slight, although the snow
pellet shower reduced the visibility to below 10km. The daytime
convection waned thereafter and we're back to flurries from layer
cloud.

SYNOP 23/1150Z
03/// 11465 70211 10014 21035 40216 52002 69901 78772 878//
333 85818 86645=
----------------------------------------------------------------
SYNOP 23/1750Z (current ob)
03/// 11670 70208 10013 21045 40224 53007 69902 77082 875//
333 10024 85630 87650=

METAR
EG// 231750Z 02008KT 9999 -SN BKN030 BKN050 01/M04
Q//// BLU=

Details:
wind... NNE, force 3.
visibility... 20km.
weather... slight snow.
clouds... 5/8 Sc 3000ft, 7/8 Sc 5000ft.
dry bulb... +1.3C.
ice bulb... -0.9C.
dew point... -4.5C.
RH... 65%.
sea level pressure... 1022.4mb (steady then rising).
max temp today... +2.4C.
rainfall last hour... trace.
12 hour rainfall (0600-1800Z)... trace.

beaufort letters (1650-1750Z)... c,cso.

Nigel (Romsey, Hampshire)
40m amsl






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