Wednesday 11th December 2019


Meteosat MSG satellite picture from Ferdinand Valk’s site at 12.00 UTC http://www.fvalk.com/images/Day_image/MSG-1200-EUR.jpg

Meteosat MSG satellite picture from Bernard Burton’s site at 12.00 UTC http://www.woksat.info/etcabl11m/abl11-msg-1200-uk.html

MetopB satellite picture from Bernard Burton’s site at 10.29 UTC http://www.woksat.info/etcabl11/abl11-1029-b-uk.html


UK min. temps on Tuesday night https://tinyurl.com/y6czn5oy

Kinbrace (Sutherland) 0.8°C, Westonbirt (Glos) and Otterbourne (Hants) 0.7°C, Aviemore and Charlwood 0.6°C, South Newington (Oxon) 0..4°C, Dalwhinnie and Usk (Monmouthshire) 0.3°C, Farnham (Alice Holt Lodge) 0.2°C, Glen Ogle -0.2°C, Shoreham -0.4°C.

Jersey Airport 7.6°C, St Mary’s (Scilly) and St Helier (Jersey) 7.7°C, Portland and St Catherine’s Point 8.5°C.


UK max. temps on Wednesday https://tinyurl.com/yyeho8j6

Glen Ogle 1.3°C, Aviemore 2.3°C, Braemar 2.5°C, Lentran (Inverness) 2.9°C, Balmoral 3.0°C, Lough Fea, Altnahinch Filters (NI) and Salsburgh (North Lanarks) 3.1°C, Killylane (NI) 3.3°C, Lake Vyrnwy 3.6°C.

Manston and Jersey Airport 8.9°C, Pembrey Sands and London St James’s Park 9.0°C, Shoreham and Frittenden (Kent) 9.1°C, Portland 9.2°C, Bude 9.3°C, St Mary’s (Scilly) 9.5°C, St Catherine’s Point and Herstmonceux 9.7°C.

OGIMET summary https://tinyurl.com/vrnfyky


Rainfall radar http://www.weathercast.co.uk/radar/united-kingdom.html or https://en.meteox.com/en-gb/?fc=0&im...ropa24uurwsg84


UK rainfall totals in 24 hours to 18.00 UTC on Wednesday https://tinyurl.com/y2cjgp5a

Drumalbin, Shap and Sennybridge 12 mm, Lentran (Inverness) and Strathallan 14 mm, Guernsey Airport 15 mm, Loch Glascarnoch and Tulloch Bridge 18 mm, Dalwhinnie 19 mm, Elphin (Sutherland) 22 mm, Aviemore 29 mm, Cassley (Sutherland) 30 mm.

Sferics http://en.blitzortung.org/historical_maps.php?map=10
Review – 24 h Loop


Peak gusts in knots https://tinyurl.com/sdqpbey

Culdrose 50 kn, Benbecula and Glen Ogle 51 kn, Kirkwall, Stornoway and Bridlington 52 kn, South Uist 55 kn, Scatsa (Shetland), Baltasound and Sumburgh 56 kn, Fair Isle 61 kn, Lerwick 68 kn.

High-level sites: Great Dun Fell 56 kn, Bealach na BÃ* 63 kn, Aonach Mòr 71 kn, Cairngorm 77 kn.


Colin Youngs
Brussels

In message ,
Colin Youngs writes
UK min. temps on Tuesday night https://tinyurl.com/y6czn5oy

Kinbrace (Sutherland) 0.8°C, Westonbirt (Glos) and Otterbourne
(Hants) 0.7°C, Aviemore and Charlwood 0.6°C, South Newington (Oxon)
0.4°C, Dalwhinnie and Usk (Monmouthshire) 0.3°C, Farnham (Alice Holt
Lodge) 0.2°C, Glen Ogle -0.2°C, Shoreham -0.4°C.

Jersey Airport 7.6°C, St Mary’s (Scilly) and St Helier (Jersey)
7.7°C, Portland and St Catherine’s Point 8.5°C.

It's a slight surprise that Shoreham was the coldest place, assuming
that it's the Sussex Shoreham (which as there's an airfield there seems
likely). As the crow flies, it's probably only 60 or so miles from St
Catherine’s Point, the mildest place overnight.
--
John Hall
"If you haven't got anything nice to say about anybody, come
sit next to me."
Alice Roosevelt Longworth (1884-1980)

Op woensdag 11 december 2019 21:51:54 UTC+1 schreef John Hall:
In message ,
Colin Youngs writes
UK min. temps on Tuesday night https://tinyurl.com/y6czn5oy

Kinbrace (Sutherland) 0.8°C, Westonbirt (Glos) and Otterbourne
(Hants) 0.7°C, Aviemore and Charlwood 0.6°C, South Newington (Oxon)
0.4°C, Dalwhinnie and Usk (Monmouthshire) 0.3°C, Farnham (Alice Holt
Lodge) 0.2°C, Glen Ogle -0.2°C, Shoreham -0.4°C.

Jersey Airport 7.6°C, St Mary’s (Scilly) and St Helier (Jersey)
7.7°C, Portland and St Catherine’s Point 8.5°C.

It's a slight surprise that Shoreham was the coldest place, assuming
that it's the Sussex Shoreham (which as there's an airfield there seems
likely). As the crow flies, it's probably only 60 or so miles from St
Catherine’s Point, the mildest place overnight.

It's certainly Shoreham Airport in Sussex https://tinyurl.com/sj7ecrb .
Wind seems to have fallen away overnight - no doubt that played a part in the low temperature https://tinyurl.com/shcsmzp .

Colin Youngs
Brussels

In message ,
Colin Youngs writes
Op woensdag 11 december 2019 21:51:54 UTC+1 schreef John Hall:
In message ,
Colin Youngs writes
UK min. temps on Tuesday night https://tinyurl.com/y6czn5oy

Kinbrace (Sutherland) 0.8°C, Westonbirt (Glos) and Otterbourne
(Hants) 0.7°C, Aviemore and Charlwood 0.6°C, South Newington (Oxon)
0.4°C, Dalwhinnie and Usk (Monmouthshire) 0.3°C, Farnham (Alice Holt
Lodge) 0.2°C, Glen Ogle -0.2°C, Shoreham -0.4°C.

Jersey Airport 7.6°C, St Mary’s (Scilly) and St Helier (Jersey)
7.7°C, Portland and St Catherine’s Point 8.5°C.

It's a slight surprise that Shoreham was the coldest place, assuming
that it's the Sussex Shoreham (which as there's an airfield there seems
likely). As the crow flies, it's probably only 60 or so miles from St
Catherine’s Point, the mildest place overnight.

It's certainly Shoreham Airport in Sussex https://tinyurl.com/sj7ecrb .
Wind seems to have fallen away overnight - no doubt that played a part
in the low temperature https://tinyurl.com/shcsmzp .

Thanks. I live about 30 miles due north, and there was at least a ground
frost here.
--
John Hall
"If you haven't got anything nice to say about anybody, come
sit next to me."
Alice Roosevelt Longworth (1884-1980)

John, yes the min temp pattern on Tuesday night was quite interesting in the SE. Shoreham is close to the River Adur and it can lie under the katabatic flow as it pushes through the gap in the South Downs immediately north of the airfield. The breeze must have dropped sufficiently low for the low-level flow to become detached from the flow aloft. A similar thing happened at Usk in Monmouthshire - by the river, classic frost hollow site on occasions.

Notable too that two other cold sites were Alice Holt Lodge (Farnham) and Santon Downham, Norfolk / Suffolk borders. Both are in sheltered clearings in woodland.

Julian
Molesey