Rapid cyclogenesis in action!

Low Carola is deepening very quickly at the moment, and the curl of cloud she is spinning up makes an impressive site in the latest satellite imagery to the southwest of Ireland (fig 1), as do the plotted observations and barograph from the weather buoy 62029 better known as ‘K1’ (figs 2 & 3). As far as I can see Carola easily breaks the barrier for rapid cyclogenesis of 24 hPa in 24 hours, the pressure there has fallen by 37.4 hPa in 12 hours, in fact I don’t think I have ever seen sustained pressure falls like that on a chart from an extra tropical low. No doubt […]

The snowfall of February and March 2018

I thought that I would take a retrospective look back (excuse the tautology) at the last two cold snaps that we’ve had, and some of the snow depths that were reported by various AWS around the country. The graphs show accumulated and fresh snow depths that I’ve gleaned from SYNOP reports which in the UK helpfully include hourly snow depths (NWS please take note). The blue bar chart in the graph represents fresh snow, that is the difference in snow depth between each hour, red bars indicate snow melt, and the light blue bar series is the hourly snow depth. Bars that span more than an hour are because […]

February fill dyke…

It’s turning out to be quite a wet February 2018 more especially in western areas. The wettest place in the SYNOP observations is Capel Curig as usual with 6.55″ of rain up until this morning (fig 1). There are still some drier spots around though, notably in eastern Ireland, the Vale of York and the southeast of Scotland, although I only have a 79% record for Edinburgh Gogarbank.

Snow depth – Wednesday 17 Jan 2018

Eskdalemuir tops the list of snowiest place with 38 cm this morning at 09 UTC (fig 1). I can’t imagine it’s the powdery kind of stuff with temperatures hovering around freezing, you may have to go a little higher than the 774 feet of Eskdalemuir to see that, but 15″ of snow in a west northwesterly, when the source of the air is Arctic Canada or Greenland is not bad going. Who knows, perhaps in the years to come, snow in the form of showers in a cold westerly airstream, may be one of the few ways we see a covering across the British Isles.

The Glasgow gale of 14/15th January 1968

It’s been 50 years since the Glasgow gale of 1968. I can’t find any better way of describing the events of the night of 14/15th of January 1968 over central Scotland than the one in the Wikipedia article:- “The 1968 Hurricane (or Hurricane Low Q) was a deadly storm that moved through the Central Belt of Scotland during mid January 1968. It was described as Central Scotland’s worst natural disaster since records began and the worst gale in the United Kingdom. Some said that the damage resembled what happened during the Clydebank Blitz in 1941. Twenty people died from the storm, with nine dead in Glasgow. 700 people were left […]

Coldest places in British Isles during last year

Four of the top six coldest places are clustered across the north of Scotland, and the fact that Aboyne comes out on top is not much of a surprise, after all it’s just down the road from Braemar. I’ve filtered all mountain stations above 500 metres AMSL out of the results so that Cairngorm didn’t come up with a day count in the three hundreds. All the cold spots in England are there Benson, Exeter, Hurn and Topcliffe. Rather surprisingly there was just a single entry for Shawbury, and that was for the -13.0°C that occurred in the recent cold spell on the 12th of December, which turned out […]

Sunniest places in British Isles during last year

Jersey* was the sunniest place in the British Isles on 32 days in the year that ended yesterday, closely followed by Shoeburyness in Essex with 26 days. Other sunny spots included Tiree, Kinloss, Lerwick and a couple of sites in southeast Scotland and northeast England. This data is of course limited to  SYNOP observations and is not complete because although the Met Office receive reports from their climate sites they choose to keep that to themselves. The sunniest day in the last year was 16.1 hours reported by Kinloss on May 26th and at Leeming on June 19th. The first entry for sunniest day in August is the joint […]

Lizard hot spot

It was almost if there were some kind of under sea hot spot just off the Lizard in Cornwall today, that kept producing a continuous stream of thundery showers that tracked northeastward towards west Devon (fig 1). My estimated accumulations from the weather radar put the totals from 0600-1650 UTC in excess of 100 mm just of the Lizard for today (fig 2). There were certainly some lively winds that came with it across the Lizard, here is the plotted sequence from Culdrose (fig 3). Since writing this blog I’ve heard on the local news that there has been some serious flash flooding at Coverack on the Lizard, hopefully […]

Tuesday’s low

It seems that the heaviest falls of rain were in the vicinity of the centre of the small low, as it tracked eastward across southern England during Tuesday and Wednesday, in fact you could almost draw a straight line from north Devon to Essex and join up all the wettest places.