Showers in north as air mass cools

After finally seeing the back of that old cold front I never expected to see showers following on so quickly behind during this afternoon.

So much for that much anticipated meridional spell

I must have put the kiss of death on it when I wrote about how this huge high pressure (with a central pressure of 1054 hPa by this Sunday) was looking like it would stick around for at least the next ten days, only to find that the...

Sunshine totals since Saturday

Six sunny days with between ten and twelve hours of sunshine each day across many parts of England and Wales, with another sunny day to come, which is highly likely to be the last. Weybourne in Norfolk is top of the IONA sunshine table for the last six...

Much of a muchness

I see Scotia Myopia is still alive and kicking down in Exeter. As far as I know you are allowed to use 280 characters in a Tweet these days – so why leave out the northwest Highlands and Islands? I wouldn’t mind so much if the statement they...

How stable is deep ocean circulation in warmer climate?

If circulation of deep waters in the Atlantic stops or slows due to climate change, it could cause cooling in northern North America and Europe—a scenario that has occurred during past cold glacial periods. Now, a Rutgers coauthored study suggests that short-term disruptions of deep ocean circulation occurred...

High Keywan set for a long stay

It looks like high Keywan, as the BIM have named it, will stick around in the central Atlantic right out till day ten if this ECMWF hi-res forecast proves correct. It’s forecast to be as intense as 1053 hPa as it moves northwest by the weekend, before slowly...

At a loss to know what to do with your self-isolation time?

Apologies for having another go but isn’t the digitising of rainfall records like these the responsibility of the UKMO? What have they been doing for the last 50 years since the introduction of mainframe computers and databases to digitise these records? No one, especially Jonathan Amos ever seem...

Frontal analysis

I thought that I would just take a look back at the history of this pesky cold front that’s been quasi-stationary for much of the last five days over the northwest of Scotland and try and get into the mind and thinking of the Great Oz Chief forecaster...

It seems like years since it’s been clear!

Apologies for pinching a line from George Harrison, but after being stuck under this meandering cold front for the last five days across the north of Scotland, we have finally managed to pop out on the cold side of it – at least for awhile. I wonder if...

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...

Spring retreat

After a very mild winter it looks like spring has been put on hold as a series of lows are forecast to run southeast from Iceland into Norway which will maintain a never ending supply of cold air from Greenland. That’s of course if this animation of the...

Rainfall totals for last 39 hours

The wettest spots exposed to the strong to gale force S’SW for the last couple of days look to have seen 60 to 75 mm of rain in the last 39 hours, that’s if my estimates from weather radar images are correct. Accumulations like this due to orographic...

Cloud busting

Hopefully the stubborn cloud that’s been plaguing the northwest of Scotland for the last five days will finally start to break up in situ as high pressure builds down from the northwest. I say breakup because I don’t think that the frontal system that’s responsible for it is...

Another 1050+ high

It will be interesting to see if the above forecast from the ECMWF plays out and we do seen an intense high of over 1050 hPa becoming established to the west of Scotland by the weekend. If it does this will be the second time this has happened...

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...

Latest rainfall accumulations

This is a chart of estimated rainfall totals since 12 UTC on Monday that’s a period of almost 26 hours, the estimates look fairly reasonable when compared to the reported totals from the SYNOPs. The highest orographic rainfall totals are in the range 50 to 60 mm over...

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...