Temperature

As the days grow longer the cold gets stronger…

I think the 12 UTC anomaly chart is much more informative than the 12 UTC wind chill chart. There were negative wind chill values down the east coast and on any high ground. I notice as the axis of the ridge from the intense anticyclone Keywan slipped south...

08 UTC wind chill

The wind chill is negative across many parts of the country this morning.

Todays anomalies & windchill

The BBC weathercasters are already making a play about how high the windchill factor will be across England and Wales on Sunday, so I thought I’d just make a point in saying that there’s also a strong wind chill across Scotland today. But of course that’s not very...

Another cracking day south of the border

This is getting rather monotonous. It’s reached 18°C again across many parts of northwest England again today under glorious blue skies. Meanwhile 250 miles further north we’re basking in occasional rain and 8°C, but the strong winds of the last few days have now abated. I notice that...

A very mild day in March

It’s not uncommon to see very mild temperatures in March so this afternoon values widely above 16°C and locally up to 19°C, with a little help from Snowdonia, shouldn’t be considered another sign of global warming as so often they are. Temperatures as high as 25.6°C have been...

Winter 2019-20 frost analysis

Not unsurprisingly the north of Scotland saw up to 30 nights with air frost in what has been a very mild Winter. There are a dozen or so coastal sites around the IONA that got away with a frost free winter including places such as Fair Isle in...

Good day to get the washing out on the line

The high pressure has brought some low negative dew point and resultant low humidity air across central England today. There is an area of descent and relative humidities down to around 30% close to Birmingham which although not remarkably low humidities will help dry you dry washing and...

15.1°C diurnal range

I meant to post these graphics of the diurnal range in temperature across IONA between yesterday’s maximum [06-18] and the overnight minimum [18-06]. It was obviously going to be large on a spring morning after such a near perfect night of radiative cooling across Scotland, and Aboyne didn’t...

Equinox sunshine

The vernal equinox occurred precisely at 0349 UTC this morning and to help celebrate the fact it’s been another sunny start with Mediterranean blue skies across many northern parts of the country. Pressure has continued to build strongly overnight and the barometer has now topped 1037 hPa across...

UK Temperatures 1884 – 2020

The freely available gridded data series for temperature by the Met Office has now been extended back to 1884, so I thought I would take a closer look at it by means of 12 month moving averages of maximum, mean and minimum temperature, by adding a couple of...

A bit of frost

There was a moderate to severe frost over the north of Scotland last night, call me pedantic if you like, but I think that’s a more accurate way of describing what a beautiful frosty morning it is than “some of us started off with a bit of frost”....

The warmth continues

There seems to be no respite in the exceptional warmth that we have seen across much of Europe, Scandinavia and western Russia this winter. Mean temperature anomalies for the first thirteen days of March are close to +10°C across the Ukraine, it’s no wonder that the SST’s in...

Very mild

It’s a very mild afternoon across much of England, that’s thanks to the disintegrating remains of a warm sector that most of the area is still sat in. Temperature anomalies at 12 UTC were widely between 5 and 7°C above the long-term average, and at Weybourne in North...

Spring has sprung!

I am bit late on this one, and it won’t come as a big surprise for people further south but spring has sprung, well at least in central England. It happened on the 17th of February and that’s a full 33 days earlier than it normally does on...

7 March 2020 – maximum temperatures

It was a mild early March day everywhere eventually yesterday, with temperatures widely up to 12 or 13°C across the whole of IONA (well except the Faroes which I suppose must also be a part of IONA). The warmth took it’s time to permeate through to the northeast...