Scott Duncan

Scottish meteorologist based in London | MMet @UniofReading | Former co-owner @wxcharts | opinions are my own

[Scott Duncan @ScottDuncanWX]

Storm Floris today is no joke for Scotland. 90+ mph (145+ km/h) wind gusts possible for some, this would be unprecedented for August. Stay safe.

[Scott Duncan @ScottDuncanWX]

The warmth is historic for many locations inside the red shading. The EFI (Extreme Forecast Index) from @ECMWF is essentially off the scale.

Meanwhile, impressive chill in Turkey.

[Scott Duncan @ScottDuncanWX]

Storm Bert undergoing explosive cyclogenesis and then merging into broad gyre of low pressure - creating an enormous wind field.

[Scott Duncan @ScottDuncanWX]

Some places which observed snow just a few days ago were not far away from hitting 20°C today.

Incredible pulse of warmth wrapping into Europe right now.

[Scott Duncan @ScottDuncanWX]

@_Aukera The bottom one is me. The top one seems to be a mirror of my twitter account

[Scott Duncan @ScottDuncanWX]

A taste of winter on the way as air from the Arctic pushes south into Europe.

Snow for some (even at low elevation).

[Scott Duncan @ScottDuncanWX]

The swathe of largest rainfall totals from Kirk will likely be found in northwest Spain & Portugal and along a corridor cutting through Northern France into Belgium, Luxembourg and Western parts of Germany.

[Scott Duncan @ScottDuncanWX]

While Florida prepares for landfall of Major hurricane Milton...

Parts of Europe braces for a direct hit of ex-hurricane Kirk. High winds and heavy rain incoming.

[Philip Klotzbach @philklotzbach]

#Milton's pressure has fallen to 897 hPa - the lowest pressure in an Atlantic #hurricane since Wilma in 2005 (882 hPa).

[Scott Duncan @ScottDuncanWX]

Hurricane Milton managed to intensify furiously from a tropical storm to category 5 in just 24 hours.

Category 5 in October has only happened one other time in the Gulf of Mexico in the satellite era (1966 onwards). That other time was Michael in 2018.

[Scott Duncan @ScottDuncanWX]

Milton is in an 'exclusive club' of category 5 October hurricanes...

https://t.co/pFQO4wrxWY

[Philip Klotzbach @philklotzbach]

#Milton is now a Category 5 #hurricane with max winds of 160 mph. Milton joins Michael as the only October Category 5 hurricanes in the Gulf of Mexico in the satellite era (1966-onwards).

[Scott Duncan @ScottDuncanWX]

Hurricane Milton has official become a major category 5 hurricane after explosive intensification.

Only 5 other hurricane seasons since 1950 have had two or more category 5 Atlantic hurricanes.

[Scott Duncan @ScottDuncanWX]

Major landfall expected in Florida on Wednesday. Please see official forecast and guidance: https://t.co/5N2lp9RozG

[Scott Duncan @ScottDuncanWX]

@PositiveLad 2017 & 2019

[Scott Duncan @ScottDuncanWX]

'Summer' in this thread refers to the months June, July and August. This is Northern Hemisphere meteorological summer months (meaning winter in the Southern Hemisphere).

[Scott Duncan @ScottDuncanWX]

These maps effectively show the same thing.

Left compares summer temperatures from 2024 to average summer temperatures from 1991-2020 (30 year period).

Right compares summer temperatures from 2024 to average summer temperatures from 2020-2023 (4 year period).

[Scott Duncan @ScottDuncanWX]

Let's zoom out and see how rest of the world looks using this same comparison...

You may be able to see a number of places in Europe and North America which felt cold compared to last 4 summers but still ended up warmer than a longer term average.

[Eric Webb @webberweather]

First NHC official forecast for #Helene when it was labeled Potential Tropical Cyclone 9 (#PTC9) (left) vs observed (via @cyclonicwx) (right).

In general, I'm not sure how you can do much better than that.