dryfie

Eyes now to the SW, with gales and much milder temperatures. Day max temperature records for rest of the month: 20th 13.3 Achnashellach 1970 21st 13.9 Onich 1937 22nd 14.5 Aboyne 2020 23rd 15.0 Girvan 2008 & Lossiemouth 1960 24th 16.5 Achnagart 2016 (whole UK record) 25th 15.8 Dunbar 2016 (whole UK record) 26th 18.3 Aboyne 2003 (whole UK record for date and month) 27th 16.7 Onich 1958 28th 15.0 Kinlochewe 1993 29th 15.5 Lossiemouth 1981 (whole UK record) 30th 14.2 Poolewe 2009 31st 14.8 Dyce 2007 I'd love to see the 26/1/2003 surface chart if anyone has the means?

I love you! I get so annoyed when folk talk of “blizzard like conditions” rather than not including the “like”. If conditions are “blizzard like” then it’s a blizzard!

Radiosonde measurements updates: Lerwick 15/2300 Nil 16/1200 Surface -2.3 850mb -10.9 and dew point -12.0 Stornoway Neither received Albemarle (on border near Corbridge) 15/2300 Surface -2.7 850mb -9.3 and dew point -19.3 16/1100 Surface 0.6 850mb -5.9 and dew point -6.5 All of these missing soundings could be having an effect on quality of forecasts?

Snow depths at official stations 1100: Lerwick 17cm, Altnaharra 12cm, Dyce 12cm, Wick 10cm, Stornoway 8cm, Loch Glasgarnoch 7cm, Kirkwall 5cm, Aboyne 4cm, Tulloch Bridge 2cm, Aviemore 2cm. Don't have figures, but 8cm at Stornoway is probably not common. 3cm here pretty much as forecast on ITV Border, but much less than BBC Scotland.

Update: 14/2300 Surface -0.9 850mb -10.5 & dew point -13.0 15/1100 Surface -1.9 850mb -11.3 & dew point -17.4

Yes, getting near. Lerwick radiosonde measurements: 12/2300 Surface 5.6 850mb -2.7 13/1100 Surface 3.2 850mb -8.1 & 100% 13/2300 Surface 0.6 850mb -8.7 & 100% 14/1100 Surface 0.2 850mb -8.9 & 100% TTAA 14111 03005 99997 00208 34013 00054 ///// ///// 92676 03528 34524 85338 08900 34526 70814 18756 00522 50524 32764 34519 40677 44963 34023 30867 51769 32534 25984 54773 32033 20126 57974 31536 15305 60974 32037 10554 67969 31534 88209 57974 31535 88100 67969 31534 77999 31313 44108 81116==

There’s an apparent problem regarding awareness of the difference between pressure thickness and heights, making this onzin.

All - A day or so ago there was a message on the MAD thread calling a model prediction of cold weather ‘carnage’. Knowing something about the subject I replied that the word shouldn’t be used unless the meaning was known. I noticed that my message disappeared a little while later, and I’ve since received a message of admonishment, informing me that ‘carnage’ could be slang, and anyway it wasn’t my business. There doesn’t seem to be any method of actually cancelling my netweather membership, so I’ll be signing out this evening for the last time.

Think the power station chimney ties that down as north end of Lockerbie?

Took a while to happen, but inevitable.......with a current max of around 7c I think it's safe to say this has been the first day this autumn when we've failed to get into double figures, though we've had some close calls. Looks as if it's the same story nationwide, even on the islands.

Another really weird day! Hard frost last night, but lunchtime everybody in town in summer attire (12c). A week ago the outside toms were still ripening well, but spent this afternoon clearing dead plants from tunnel, despite cover and fleece. Chillis and peppers were already indoors to be safe. Surprised to see cape gooseberries still ok. More cloud around now, so perhaps less cold?

Fair old Kintyre Dangler today!

Testament to the strength of our sun that, even at this time of the year , in only 13c, if you find shelter from the admittedly light wind, it can be lovely. An afternoon of unbroken sunshine in shorts and T Shirts. Incongruous to be putting fleece out and bringing plants in for the winter!

Cracking day today with exceptional visibility and able to sit out in shorts etc. I feel sincerely sorry for our southern friends with all they have to put up with. Don’t think I could possibly return, and not sure how they tolerate the appalling climate.

Most airports have two sets of readings; One is for aircraft purposes, with temperatures only needing to be accurate to one degree celsius. In addition they are then rounded to the nearest whole degree. The measuring equipment has been known to be in the ATC car park! My reckoning is that the reported whole degree value could be up to 1.5c incorrect, but still acceptable for aircraft requirements. You can tell these because the temperature is reported without a decimal value. Messages might also include the ICAO indicator for the site, such as EGLL for Heathrow. Some airports may also have official Met Office equipment. This is regularly inspected and checked for accuracy, the requirement being accurate to 0.1c. The equipment would be installed above a grass surface, hopefully well away from tarmac or exhaust. You can tell these because they report the temperature to the nearest decimal point, and therefore give a more accurate reading. The message might also include a WMO number, such as 03772 for Heathrow.

A Original post: https://community.netweather.tv/topic/99056-model-output-discussion-mid-summer-onwards/?do=findComment&comment=4934270

Unplanned drive up to Inveraray this afternoon to help my niece try to make her first home habitable again. Moving stuff upstairs, lifting carpets and starting to remove skirting etc. In my 75 years I’ve had few sadder days.

A

Looking at the SEPA rainfall totals for the past 36 hours, here's my rough assessment: NW of Ardnamurchan to Black Isle <60mm NE of Fort William to Fife >70mm (large areas consistently around 75mm) S of Forth Clyde <50mm S of Girvan to Canonbie <15mm Large area centred approx Inverary >100mm Highest totals: Hazlewood Cottage (south of Oban) 158mm Loch Restil 153mm Inveruglas 146mm Rest and Be Thankful 145mm Some others: Dunstaffnage 124mm Killin 126mm Strathyre 110mm Dalmarnock 43mm Edinburgh RBG 49mm Peterhead 32mm Dalbeattie 6mm Apologies for brevity

If the WCML floods then it’s often in this area, so watch out for Carlisle/Lockerbie warnings. No problems today with mainly light/drizzle stuff. South of the main area of disruption.

Interested to note how the temperature difference across the front has been steadily increasing through the day. It is now over 5c between Hawick (10.2) and Eskdalemuir (15.8), only about 12 miles apart. To the west it varies from 12 at Tarbert to 16 at Macrihanish. Just over the border it's 19 in Newcastle and 11 in Morpeth!

Away, that’s the Lammermuirs, ya silly Gloucester.

Anybody old enough to remember the old BSM adverts, where the map of Scotland, England and Wales was a driver. Argyll was the face, the steering wheel was the Rhins, the knees were Pembroke, the back was basically the east coast, and the foot pedals were in Devon (or was it Cornwall, always mix the two). Remind me which bit was Kent?

I’ll leave it to others to discuss the decimal point accuracy of forecasts this weekend, and ask a question. How many sources forecast that Northern Ireland would be the warmest part of the UK today, even yesterday?

Have to note that the Achfary reading was around 2am, so obviously no insolation. Remember reading that it wasn't a normal fohn in that the air wasn't lifted up a mountain, and then down again, but was already present from being carried from the central Atlantic. As the air in those regions seems to be warming too, then why not 20c?