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Marco Petagna @petagna.bsky.social · 27m

One of those days when air sinks/ warms adiabatically under the influence of high pressure, creating an inversion..rise in temp with height

Cloud trapped under the inversion giving a chilly day some low lying parts

Places in/above the inversion, eg hills, seeing warm sunshine

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Marco Petagna @petagna.bsky.social · 5h

High pressure dominating

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Marco Petagna @petagna.bsky.social · 5h

Nice capture of the high pressure subsidence inversion by @ldscwebcam on X earlier

Shows the haze and subsequent low cloud ☁️ that formed in the relatively more moist and unstable lower portion of the atmosphere just below it

The warming/drying influence of the sun now clearing it

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Marco Petagna @petagna.bsky.social · 5h

A good time for checking those barometers with high pressure in charge

Mean sea level pressure around 1032/1033mb for most

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Marco Petagna @petagna.bsky.social · 20h

Sea ice extent increasing as you'd expect N of Russia/Alaska/Canada ... but just look at the N European sector..some parts actually seeing a decrease in recent weeks ..

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Marco Petagna @petagna.bsky.social · 1d

Cloud cover making all the difference to our temperatures 🌡 today

20C Scotland where it's 🌞
12C under stubborn ☁️

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Marco Petagna @petagna.bsky.social · 2d

Red warnings in force for heavy rain SE Spain today
#Alice

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Marco Petagna @petagna.bsky.social · 2d

Latest reservoir water storage levels here in SW England..Wimbleball struggling

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Marco Petagna @petagna.bsky.social · 2d

Subtropical storm #Karen forms..

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Marco Petagna @petagna.bsky.social · 2d

High pressure dominating next 7 to 10 days

Result..

Little in the way of rainfall

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Marco Petagna @petagna.bsky.social · 2d

A trend towards a -NAO North Atlantic Oscillation..a relative increase in pressure around Iceland &/or decrease in pressure around the Azores symptomatic of the blocking high pressure cell located near the UK..effectively suppressing Atlantic driven W'ly airstreams for now

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Marco Petagna @petagna.bsky.social · 2d

#Omega style blocking pressure pattern developing

UK dominated by high pressure as rain bearing weather systems steered well away

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Marco Petagna @petagna.bsky.social · 3d

Red warnings for heavy rain from @aemet.es for SE Spain as tomorrow..

AEMET @aemet.es · 3d

⚠️🔴 AVISO ROJO | LLuvias torrenciales.

➡️En vigor a partir de las 10:00 del viernes 10 en las comarcas Litoral sur de Alicante y Campo de Cartagena y Mazarrón.

➡️ Peligro extraordinario. Puede haber inundaciones y crecidas repentinas. Siga recomendaciones de Protección Civil.

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Marco Petagna @petagna.bsky.social · 3d

www.metoffice.gov.uk/blog/2025/ar...

Are ocean robots the next big thing for climate monitoring?

With climate data more important than ever, is there a way to maximise marine data collection, gathering even more information from all oceans?

www.metoffice.gov.uk

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Marco Petagna @petagna.bsky.social · 4d

www.metoffice.gov.uk/about-us/new...

New space weather modelling suite enables upper atmosphere forecasting for the first time

A pioneering new space weather forecasting modelling suite will enable operational modelling of the upper atmosphere at the Met Office for the first time in a major breakthrough for UK atmospheric sci...

www.metoffice.gov.uk

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Marco Petagna @petagna.bsky.social · 4d

A great insight into the metoffice land observation network, and a video detailing how weather forecasts are produced based on the use of this and other available data..

www.metoffice.gov.uk/blog/2025/th...

The UK land observation network: Underpinning weather and climate understanding

The UK’s weather is famously changeable, and it requires a robust and comprehensive network of land-based observation stations to monitor it.

www.metoffice.gov.uk

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Marco Petagna @petagna.bsky.social · 4d

The jet stream heading N by the weekend

Higher pressure taking hold

=drier/more settled weather

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Marco Petagna @petagna.bsky.social · 4d

The harvest supermoon 🌚 is now rising in the ENE sky..more info here...

www.metoffice.gov.uk/blog/2025/ho...

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Marco Petagna @petagna.bsky.social · 5d

The 10th named storm of the tropical Atlantic season forms
#Jerry

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Marco Petagna @petagna.bsky.social · 5d

One to 👀

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Marco Petagna @petagna.bsky.social · 5d

If at first you don't succeed

High pressure is trying to settle the weather down and has had a good attempt across the S of the UK

As expected though it's through the second half of the week and into the weekend that a more successful wider spread effort takes place for the UK

Met Office - weather and climate @metoffice.gov.uk · 6d

High pressure will build across the UK this week, eventually providing many of us with calm conditions

But calm doesn't automatically mean sunny, as there could often be large amounts of cloud around ☁️

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Marco Petagna @petagna.bsky.social · 6d

www.metoffice.gov.uk/blog/2025/ho...

The Met Office and the rail sector: Keeping the UK on track

The UK’s rail network is a vital part of national infrastructure, connecting communities, supporting the economy, and enabling millions of journeys every day.

www.metoffice.gov.uk

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Marco Petagna @petagna.bsky.social · 6d

Contrails are a naturally occurring phenomena of course, and have been since the invention of aircraft

During wartime military aircraft pilots have even used them to mask their bombing attacks..as in 1944 below..

go.gale.com/ps/i.do?p=AO...

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Marco Petagna @petagna.bsky.social · 6d

The #spv stratospheric polar vortex is incredibly weak at the moment

EQBO known to slow 🐌 its W'ly spin up during the Autumn

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Marco Petagna @petagna.bsky.social · 6d

Seems to be a thing with tropical storms interacting with one another at the moment

Humberto and Imelda last week in the N Atlantic

Now perhaps Octave and Priscilla in the E N Pacific

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