A fairly cyclonic start and end to April 2024 in the objective LWTLWTLamb Weather Types are often used in UK-based analyses, with individual weather patterns based on the eight primary cardinal directions (N, NE, E, SE, S, SW, W, NW) plus cyclonic (C), anticyclonic (A) and unclassified (U) types. indices, with an anticyclonic spell in the fourth week. There was a fair spread of wind directions during the month, but the second and third weeks were zonal W or SW’ly.
My auto headline in my UKMOUKMOThe 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 gridded weather application for the weather in April 2024 in the UKUKThe United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. was “Mild, wet and rather dull”, which I sums it up quite succinctly. I wrote the code for the auto-headline routine 10 years ago now and it still does a pretty good job. I tried to get an answer from Chat GPT about what it thought the weather had been like and all I got was this. 😜
I make April 2024 the 12th joint warmest since 1659 in Central England, and the warmest since 2020. The early warmth at the beginning of the month was cancelled out by a rare cold spell at the end. Despite the 30 year linear trend showing warming of +0.15°C per decade, the 10 year running average has been on a slide.
The resident Icelandic low for April was displaced southeastward again this month by higher than average pressure across Greenland, and lower than average pressure in the northern North Sea, leaving the British Isles in a slack cyclonic westerly flow on the mean pressure chart.
In my DIYDIYDo It Yourself global temperature series April 2024 tied with April 2016 as warmest with a mean of 10.17°C and anomaly that was +0.18°C above the 1991-2020 LTALTALong Term Average. This is usually defined as a 30 year period by the WMO.. I wonder how much of an underestimate that was this month?
I’ve been producing scatter correlation graphs for UKUKThe United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. gridded data for a number of years now, but recently I tried the same idea with climate data drawn from SYNOPSYNOPSYNOP (surface synoptic observations) is a numerical code (called FM-12 by WMO) used for reporting weather observations made by manned and automated weather stations. SYNOP reports are typically mad hourly and consist of groups of numbers (and slashes where data is not available) describing general weather information, such as the temperature, barometric pressure and visibility at a weather station. data for many stations for a single time period. I’ve now developed a viewer that displays a scatter chart of monthly rainfall POAPOAPercentage Of Average along the X axis, with temperature anomalies along the Y axis. To differentiate between each country I’ve coloured coded each point with one of five different colours. As you can see for April 2023 it works quite well, and you can quickly see that Scotland (blue) had a cold but reasonable dry month, whereas England (yellow) were much wetter.
The above scatter graph shows the correlation between rainfall POA (Y axis) and sunshine POA (X axis), and again it’s easy to see at a glance how much more sunnier and drier Scotland were when compared to England. I’m sure it will be only a matter of time before someone else uses this idea of mine.
