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Tuesday 30th December- General Weather Chat

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A cold clear night with light winds, And a low of -1.6c. Around 7inch of Snow remains.

 

Currently; Clear with little wind.

Temp 0c

Dp -1.2c

WC -3.9c

Wind West 7mph                                     

Rain today 0.0mm

Snow cover 100%

 

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A clear night cold but once again no air frost. Increasing breeze has lifted temps well above freezing

Temp 2.1C min 0.6C

Barometer 1036mb falling

WindF3 SSW

Rainfall nil

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A dry and clear night but with a persistent breeze and the temperature up and down like a yo yo, a degree or so either side of 0c.

 

At 0900.

Temp; 0.5c

24 hr max' 2.5c

24 hr min; -0.6c

Grass ( snow ) min; -5.9c

Rainfall in 24 hrs ending 0900; 0.3 mm ( from melted rime)

Mean wind speed; 17 mph W/SW

2 oktas Sc and Ci

Vis; 25 km

Mean depth of lying snow; 16.2cm. 100% cover.

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Tuesday 30th December 2014

 

Another moderate to severe frost overnight under a mostly clear sky. Sunny sp far this morning, icy. Mean snow depth 3.5cm 70%

 

Readings at 09:00 GMT:

 

Maximum temperature to 18:00 GMT yesterday: 2.6°C

Minimum temperature overnight -4.5°C

24-hour maximum 2.6°C

24-hour minimum: -4.5°C

Minimum temperature on grass: -9.3°C

Maximum wind gust: (Midnight to Midnight) 4.0 mph WSW

Rainfall total: tr.mm

 

Conditions at 09:00 GMT

 

2 Oktas Cirrus.

Visibility: moderate, around 6 miles

Temperature: -3.5°C

Humidity: 90.9%

Dew point -4.8°C

Wind Direction: Force 1 S

Barometer 1038.9.0mb: Trend: falling slowly.

 

Yesterday.

 

Clear and cold overnight, severe frost, low -5.3c with -9.1c on the snow cover.  Clear, sunny this morning, icy, mean snow depth 3.5cm 75%. Mainly sunny through the day, cold with frost and ice persisting in the shade, little snow melt.

 

December 2014 so far:

 

Mean temperature: 4.8c  (0.5c) of local average)

Maximum temperature: 13.5c on the 22nd

Minimum temperature: -5.3c on the 29th

Grass Minimum: -9.3c on the 30th

Rainfall 71.7mm

Wettest 24 hours = 21.9mm on the 16th.

Maximum wind gust: 36.9 mph W on the 23rd.

 

2014 so far:

 

Maximum temperature: 29.0c on the 18th July.

Minimum temperature: -5.3c on the 29th Dec

Grass Minimum: -9.1c on the 29th dec.

Rainfall 836.1mm

Wettest 24 hours 21.9mm on the 26th Dec

Maximum wind gust: 46.6 mph SE on the 5th Feb.

Edited by Polar Continental

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Dry cloudy start

 

Temp 3.0c

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24 hrs to 0900:-
-5.4c Low temp
6.2c High temp
Rainfall: nil
Currently 4.7c
1031 Mb steady
Wind 8 mph SW
Mostly cloudy

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Snow resisting higher temps quite well.

Temp 5.3C

Barometer 1035mb falling

Wind F1 WSW

Rainfall Nil

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Another light frost this morning leading to a clear day. 7 hours of sunshine looking likely today, blasting away the record for sunniest December at this site (87.7hrs vs old record of 82hrs).

 

Max Temp: 4.7C

Min Temp: -0.7C

Mean Wind: 10mph W

Mas Gust: 16mph

Rainfall: 0.4mm (dew)

Sunshine: 6.8hrs (so far)

 

Currently clear and sunny with a temp of 4.1C.

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A dry day with long sunny spells.

Max temp 5.4C now 4.6C

Barometer 1034mb falling

Wind F1 SSW

Rainfall Nil

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Clear spells and frosty last night, cloudier later, near calm.

Cloudy start but almost unbroken sunshine from 10am. Less cold, mostly light winds (SSW afternoon).

Some shade frost and ice lasted all day again.

 

Min -5.1c yesterday evening

Max 6.3c @ 1414

Rain yesterday and today Nil

Est sun 5.5 hours

Max gust SW 19mph @ 1308

 

Currently Mostly clear and cooling.

2.5c/ 95%/ 1036mbar falling 

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Dry day with good sunny spells

 

Temp 4.1c

Max Temp 7.9c

Min Temp -1.8c

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A dry day with continuous sunshine throughout the morning and into the early afternoon. A sheet of broken Sc moved in from the west after 1400 but this dispersed again by late afternoon. A slight thaw of lying snow.

 

At 1800.

Temp; 2.0c

Max' today; 3.7c

Min' last night; -0.6c

Grass ( snow ) min; -5.9c

Rainfall from 0900-1800; 0.0 mm

Sunshine today; 5.04 hrs

Mean wind speed; 17 mph SW/W

Highest gust today; 26 mph W at 1013

1 okta Ci and Ac

Vis; 20 km.

Mean depth of lying snow; 15.8cm. 100% cover.

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A min of -5.9c here at 3:21 so not quite as low a the previous night that reached -6.7c.

 

Warmer today reaching 8.2c with as light southerly breeze came in with the coast a few miles away.

 

Currently it's -3.1c and this is the kind of set up where you get large local temp variations and inversions around this area, as a milder flow overrides colder air in the valleys.

 

Here at the bottom of the valley 10 mins ago it was -3.2c, yet a vantage vue weather station under a mile to my west and only 45m higher was reading +4.4c, so 7.6c higher. The temp there is fluctuating though, presumably near the inversion boundary, as it just quickly dropped to 3.1c.

Normally it's 2-3c warmer on clear calm nights but have occasionally seen it higher like now.

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A cold dry sunny day,max 3 deg,min 0 deg,some snow melted in the sun but still a cover away from the sun at low levels still full cover above 150m

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Overnight low of -5.2c. Some patchy cloud and mist patches first thing, clearing by lunchtime with clear skies by afternoon. Light Westerly breeze 6-8mph. High of 3.3c, then dropping down below freezing after 5pm, now currently a chilly -4.2c under clear skies on a very slack Southerly breeze.

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Milder air moving in already temp now up 3.8C and thaw gathering pace.

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