Just a compilation of posts to my new Blue Sky account of this week long early cold spell across the country.
15 Nov 2024
1500-2100 UTCUTC Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about 1 second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT).
Temp changes
I generated this chart to see how the cold air was progressing into the NW behind the cold front. Then I noticed just how quickly this evening had cooled across S England under near perfect radiation conditions.
15 Nov 2024
06-20 UTC
Precipitation Totals
Estimates from weather radar.
Just 0.6mm of rain from cold front in StrathpefferStrathpeffer Strathpeffer (Scottish Gaelic: Srath Pheofhair) is a village and spa town in Easter Ross, Highland, Scotland, with a population of 1,469..
16 Nov 2024
1112 UTC
1097 M Snow already starting to accumulate on the Cairngorms at 1097 M.
It’s -3°C at 1245 M so freezing level ~500 M 🤔
16 Nov 2024
2153 UTC
Some snow in these heavier showers on the Velux windows in Strathpeffer.
18 Nov 2024
1610 UTC
Looking down from the Nevis range over Ft William & the top end of Loch Linnhe if I’m not mistaken.
It looks like the SW end of the Great Glen has been in fog all day.
18 Nov 2024
NASANASA The National Aeronautics and Space Administration is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. Worldview
You can see the extent of the snow cover across the N of Scotland this lunchtime.
Loch shin stands out very sharply.
18 Nov 2024
21 UTC Surface analysis
An absolutely fascinating chart, I wish I had more time to analyse it more properly.
It’s already -8.3°C at Glascarnoch, beating this mornings -7.8°C at Tulloch Bridge, and it’s on[y 21 UTC.😮
Heavy snow at Waddington 🤔
16-19 Nov 2024
12 UTC Temp anomalies
The cold air has slowly extended further and further S each day since Saturday.
19 Nov 2024
1445 UTC
The sky has grown very dark in Strathpeffer as it fills in with CBCB Cumulonimbus cloud. Well-developed cumulonimbus clouds are characterized by a flat, anvil-like top’s coming down from the N.
It’s an active trough and deep convection, with thunderstorms in the Moray Firth.
It’s just started to snow – big flakes – vis down t0 800 M.
20 Nov 2024
0855 UTC
Strathpeffer
A good ~4 cm level snow cover from overnight snow showers which continue this morning.
The old wives tale that temperatures increase when it starts to snow are true this morning 🤔
20 Nov 2024
12 UTC
Strathpeffer-Knockfarrel
Plenty of CB coming down from the N but moving fairly rapidly.
An icy wind & a little drifting on the top. Still sub-zero this lunchtime 5 cm of snow lying.
20-29 Nov 2024
12 UTC
2M Temp anomalies
ECMWFECMWF The European Centre for Medium-Range Weather Forecasts is an independent intergovernmental organisation supported by most of the nations of Europe. It is based at three sites: Shinfield Park, Reading, United Kingdom; Bologna, Italy; and Bonn, Germany. It operates one of the largest supercomputer complexes in Europe and the world's largest archive of numerical weather prediction data.
Its lasted a full week in N Scotland not bad for an early cold spell.
It’s a winter wonderland in Strathpeffer today, with a max of just 0.2°C so far.
I imagine the kids will be sledging down the golf course shortly.
20 Nov 2024
1630 UTC
Snow showers all day long in Strathpeffer, despite the fact that we’re 100 km away from the N coast of Scotland.
I’ve just measured 10 cm of lying snow by the traditional Met OfficeUKMO The Meteorological Office is the United Kingdom's national weather service. It is an executive agency and trading fund of the Department for Business, Energy and Industrial Strategy method of the mean of 3 measurements. 😉
20 Nov 2024
2345 UTC
Quite sharp pressure falls & an ominous blob of cloud on the IR satellite imagery, combined with a lot of mod/heavy ppn across the N of Sutherland at the moment.
21 Nov 2024
08 UTC
Snow Depths
Certainly much deeper than 14 cm just after midnight, but temps rose from -3°C to 1°C and the snow turned sleety from 02 UTC.
Still only 0.7°C with some light snow in Strathpeffer.
21 Nov 2024
09 UTC
Surface analysis
This cold warm front solution seems to kind of fit the weather we’ve seen in Strathpeffer overnight.
21 Nov 2024
07 UTC (31 hr total)
Total precipitation
Estimates from weather radar
Most of this, inland at least, fell as snow. Estimates look a bit too high.
21 Nov 2024
1040 UTC
It’s snowing again in Strathpeffer, although you can’t see it so well in this webcam image.
Temperature dropped back to 0.3°C.
It’s a rather nasty day out there all in all.
But it’s not over to the fat lady starts to sing.
Apologies to any fat ladies out there 😉
