Lably
Skip to content

2025–26 European windstorm season

  • 86 min read
  • 4 chapters

Explore on Lably

ToursExplore Lably’s 3D tours

This year represented the seventh season of collaboration within the Western Group, where the Netherlands Koninklijk Nederlands Meteorologisch Instituut (KNMI) works alongside the UK’s Met Office and Ireland’s Met Éireann. To the south-west, the national meteorological agencies of Portugal, Spain, France, and Belgium have united for their ninth year of partnership, joined for the first time by Luxembourg.

The Mediterranean regions also entered their fifth year of formal naming. This included the Eastern Mediterranean group—comprising Greece, Israel, and Cyprus—and the Central Mediterranean group, which includes Italy, Slovenia, Croatia, Montenegro, North Macedonia, and Malta. Furthermore, a significant change occurred on 1 January 2026, when the Northern Group, Norway, Sweden and Denmark, adopted a predetermined list of names for the first time.

Background and naming

Definitions and naming conventions

There is no universal definition of what constitutes a windstorm in Europe, nor is there a universal system of naming storms.

In the western group, consisting of the UK, Ireland, and the Netherlands, a storm is named if one of those meteorological agencies issues an orange warning (known as amber in the UK per its National Severe Weather Warning Service system), which generally requires a likelihood of widespread sustained wind speeds greater than 65 km/h (18 m/s; 35 kn; 40 mph), or widespread wind gust speeds over 110 km/h (31 m/s; 59 kn; 68 mph). Required speeds vary slightly by agency and by season. Likelihood of on-land human impacts and inherent severity of the system are further factors in whether to use the next pre-listed name.

The south-western group conducts its own naming (Spain, Portugal, and France). They typically name a storm if it prompts the issuance of an orange warning, usually for wind, rain or in some cases snow.

For Greece to call upon the next name of its group, the criteria are when forecast winds are above 50 km/h (14 m/s; 27 kn; 31 mph) over land plus expected to impact infrastructure significantly. For Denmark to do so, a windstorm must have an hourly average wind speed of at least 90 km/h (25 m/s; 49 kn; 56 mph).

The Meteorology Department of the Free University of Berlin (FUB) names all high and low-pressure systems that affect Europe, though they do not assign names to any actual storms. A windstorm that is associated with one of these pressure systems is sometimes recognized by the name given to the associated pressure system by the FUB. Named windstorms that have been recognized by a European meteorological agency are described in this article.

Invoking the next listed name in Europe is commonly by a storm's forecast conditions in the next day or so – as public awareness and preparedness are often cited as the main purpose. A nascent storm very occasionally does not become or remain a storm when reaching the forecasting authority.

Western group (United Kingdom, Ireland and the Netherlands)

These following names were chosen for this storm season by the western group.

South-western group (France, Spain, Portugal, Belgium, Luxembourg and Andorra)

These following names were chosen for this storm season by the south-western group.

Central Mediterranean group (Italy, Slovenia, Croatia, Bosnia & Herzegovina, Montenegro, North Macedonia and Malta)

These following names were chosen for this storm season by the Central Mediterranean group.

Eastern Mediterranean group (Greece, Israel and Cyprus)

The Eastern Mediterranean group works slightly differently compared to other naming lists, instead of ending a season on 31 August of that year, they end the season on 30 September of that year. These are the names that were chosen for the 2025–26 season in Greece, Israel and Cyprus:

Northern group (Denmark, Norway and Sweden)

Much like the naming system used by the Free University of Berlin, this group did not use a pre-set list prior to 2026, instead naming storms as they occurred. Starting in 2026, the northern group established a unified list shared among its member countries. Storm Johannes serves as the final storm to be named independently under the old system.

  • Johannes

Starting 1 January 2026, the northern group transitioned to a unified list, similar to other European naming groups, and will name storms accordingly. The official list for the region is provided below.

Central/FUB naming group (Germany, Switzerland, Austria, Poland, Czech Republic, Slovakia and Hungary)

Like the northern group, the Free University of Berlin names storms based on low pressures across the continent and does not use a naming list. The critical new criterion for FUB inclusion is that the storm must prompt a widespread orange weather warning or greater across the affected Central, NE, or SE regions of Europe.

  • Lothar
  • Wolfgang
  • Nils
  • Roman
  • Patricia
  • Ylvi
  • Bernadette
  • Priska

Atlantic ex-tropical cyclones

Ex-tropical cyclones (subtropical storms, tropical storms, or hurricanes) that directly impacted a European country from the 2025 Atlantic hurricane season or the 2026 Atlantic hurricane season which became a European windstorm and retained its name as assigned by the National Hurricane Center (NHC) in Miami, Florida.

  • Gabrielle

Sign in to keep reading

3 more chapters are free with a Lably account.

More in Earth science