>-22.3C…. BRING IT ON…. I predict a low of -25C by tomorrow morning! Is it possible we take a run at the national record of -27C? YES…
We managed to hit a somewhat impressive -8.1F (-22C) which was reported from Altnaharra which is way up there in the north-west highlands, tucked away in one of those cold nooks within a Glen. Highly elevated and sheltered within a valley by surrounding mtns, this location like others supports “draining” of cold air from surrounding hillsides that swoosh cold air down into the valley or in Scotland “glen” which collects and the air at the bottom simply grows colder throughout the course of the night IF skies remain very clear, deep snow is on the ground and Arctic High Pressure is dominant. Winds also must be either very light or completely calm. But conditions are perfect, about as perfect as it gets to support some of the coldest nights you’ll ever get in this country.
Tonight, after a cold day which always sets a good base for a colder following night and skies are expected to remain clear and temperatures are to plummet to what is likely thee coldest night of winter 09-10 and this may in fact end up producing the lowest reading we’ll get this winter across the British Isles. There’s always a very small window of oppertunity, a window that only opens once or twice in perhaps 10 to as much as 30 years.
The stage is set, the bubble of high pressure now in place and the intensity of the cold Arctic air is strong enough and with a brilliantly reflective blanket covering all but coastal areas and the western islands, we could see lows in some sheltered areas drop to -25C or lower by between 5-8am tomorrow morning. Even urbanised areas of Glasgow, Edinbugh, Dumfries may see -15C with some communities such as Lanark, Sanquhar, Abington, Coldstream, Galashiels, Carluke, Wishaw, Motherwell, Kirk O’Shotts pushing -18C…
Carlisle and Shap may run for -15C also tonight….
Current readings as of 9.00pm GMT
CASTLEDERG (NORTHERN IRELAND) -10C
Thanks for reading.