Marco Petagna
@petagna.bsky.social
1.3K followers 150 following 1.7K posts
BSc MSc Media Advisor & Senior Operational Meteorologist UK Met Office Parent to 2 mini daxies Love running Views & opinions my own @Petagna on X
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petagna.bsky.social
High pressure dominating next 7 to 10 days

Result..

Little in the way of rainfall
petagna.bsky.social
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
petagna.bsky.social
#Omega style blocking pressure pattern developing

UK dominated by high pressure as rain bearing weather systems steered well away
petagna.bsky.social
Red warnings for heavy rain from @aemet.es for SE Spain as tomorrow..
aemet.es
AEMET @aemet.es · 20h
⚠️🔴 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.
petagna.bsky.social
The jet stream heading N by the weekend

Higher pressure taking hold

=drier/more settled weather
petagna.bsky.social
The harvest supermoon 🌚 is now rising in the ENE sky..more info here...

www.metoffice.gov.uk/blog/2025/ho...
petagna.bsky.social
The 10th named storm of the tropical Atlantic season forms
#Jerry
petagna.bsky.social
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
metoffice.gov.uk
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 ☁️
petagna.bsky.social
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...
petagna.bsky.social
The #spv stratospheric polar vortex is incredibly weak at the moment

EQBO known to slow 🐌 its W'ly spin up during the Autumn
petagna.bsky.social
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
petagna.bsky.social
In the wake of #StormAmy (stage right), a build in pressure from the southwest

However, further weather fronts gathering to the N/NW, so still some rain to come next few days before a more notable rise in pressure later this coming week..
petagna.bsky.social
Will pass this on to our record monitoring team
petagna.bsky.social
'Up up and away'

A gradual build in pressure on the way...
petagna.bsky.social
At one point earlier today there were 102,000 power outages across Scotland and 22,000 across Northern Ireland
#StormAmy
petagna.bsky.social
Changes afoot next 7 days

Low pressure➡️high pressure

Wet and very windy➡️mostly dry, settled with light winds and a fog risk
petagna.bsky.social
Appears #StormAmy bottomed out at 944hpa

96mph Tiree equalled station record wind gust speed

92mph Magilligan a new October wind gust record for N Ireland