March 2021 – Mean pressure & anomalies
Mean sea level pressure was over 7 hPa higher than average to the southwest of IONA on March. This anomaly dominated the chart for …
Pressure
Last 12 weeks circulation
In these weekly mean pressure charts it’s very easy to see the mild spell and strong southwesterlies that occurred in mid December followed by …
Higher than average pressure during November 2020
The band of higher than average pressure during November 2020 that stretched from the central Atlantic (+9 hPa) into central Europe (+8 hPa) explained …
Higher than average pressure during November 2020 Read More »
Rise in pressure of 63.7 hPa in just 66 hours at Stornoway
There might be another SYNOP station with a slightly larger rise in pressure than the one at Stornoway, but the steady rise of 63.7 …
Rise in pressure of 63.7 hPa in just 66 hours at Stornoway Read More »
Why has October 2020 been so cold?
Why has October 2020 been so cold up until now? The reason why temperature anomalies have been three degrees below average across central France …
The recent record mild winter in Europe
How much of the underlying cause of the recent record mild winter across Europe and western Russia was purely down to the dynamics of …
March 2020 – circulation
The mean pressure chart for March 2020 has calmed down considerably on previous months. Large positive anomalies (+7hPa) across the Azores beefed up the …
February 2020 – circulation
Not that dissimilar to January, February continued the powerful zonal westerly regime that had begun back in December. Mean pressure anomalies continued to be …
Low Victoria, storm Dennis and the lowest pressure on record
I don’t think low Uta will get quite as deep as the all time record low for the North Atlantic, but it won’t be far off either (corrected).
The reason why it’s been so mild
High pressure over France and lower than average pressure to the north of Iceland puts the squeeze on the southwesterly flow across latitude 55 degrees north.
Highest pressure in January
The highest surface pressure in the month of January in the UK was 1053.6 hpa not a lot of people know that.