I’ve just refactored the main window in my Vantage Pro database application, and added a three-line footer to provide means and extremes for whatever month or season the data has been filtered on.
Sep 2024 – Strathpeffer Read More »
Circulation wise September was a rather blocked and meridional sort of month, with winds from N or E. Mainly anticyclonic from the 12th to the 19th, otherwise rather cyclonic at times, especially during the last week.
The mean temperature of 14.0°C made it the coldest since 2020, and 0.2°C below the 1991-2020 LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO.. This was the third below average month in 2024 so far in central England, in a year which globally almost certainly will be the warmest on record.
Sep 2024 – Central England Temperatures Read More »
Unusually high pressure in September to the southwest of Iceland and Greenland (+8 hPahPa A Hectopascal is the SI unit of pressure and identical to the Millibar) and across Ukraine (+11 hPa). This effectively neutralised the usual Icelandic low, effectively pushing a band of lower pressure from northern France to the Black Sea. That left the British Isles in a col as far as mean pressure for the whole month was concerned, which doesn’t quite tell the whole story.
Sep 2024 – MSLP Anomalies Read More »
A month at first glance dominated by colder than average temperatures. Yet another cold month across Iceland, with what’s fast becoming the normal NW-SE temperature gradient across the British Isles.
Sep 2024 – Temp Anomalies Read More »
Four days of thunderstorms, heavy showers and rain across the south all due to an upper cold pool that migrated westward.
20-23 September – Wet spell Read More »
I was watching the Deep Dive video produced by the UKMOUKMO The 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, and presented so well by Alex Deakin about the weather in September 2023 on Youtube as you do. He showed two anomaly charts for MSLPMSLP Mean sea level pressure is the pressure at sea level, or, when measured at a given elevation on land, the station pressure reduced to sea level assuming an isothermal layer at the station temperature., one for the first half of September and the other for the second half that showed how anomaly charts for the whole month can sometimes be misleading. In this case it was how the remarkable warm spell in the first half of the month contrasted with the more mobile second half. The resulting anomaly chart for the whole of the September cancelled out the anticyclonic SE’ly in the first half that brought all the high temperatures.
September 2023 – When anomaly charts hide the real picture Read More »
A very mild, rather wet & rather sunny month.
September 2023 – Weather Summary Read More »
The mean of 17.0°C was fractionally higher than that of September 2006. The CETCET Central England Temperature value wasn’t held back by lower temperatures across Scotland as was the gridded data series.
September 2023 warmest in Central England Read More »
