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20 Aug 2025

Storm Floris: a rare and disruptive summer tempest across Northern Europe

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Storm Floris, the sixth named storm of the 2024–2025 season, struck northern Europe in early August 2025 with unseasonably powerful winds and torrential rain. 

Unlike typical summer weather, Floris resembled a mid-latitude Shapiro-Keyser cyclone, bringing gusts of up to 90 mph (145 km/h) and rainfall exceeding 80 mm in parts of Scotland. 

Its timing during peak tourist season amplified its impact, catching many off guard.

 

United Kingdom (Especially Scotland)

  • Wind & Rain: Gusts reached 82 mph in Wick, equaling Scotland’s all-time August record. Heavy rain caused flash flooding and blocked drainage systems2.
  • Power Outages: Over 71,000 homes lost electricity, with Inverness, Dornoch, and the Moray Coast among the worst-hit areas.
  • Transport Disruption: Rail services were crippled by fallen trees and damaged overhead lines. Ferry and flight cancellations were widespread.
  • Education Impact: Exam result deliveries were delayed in island communities due to logistical breakdowns.

 

 Norway

  • Coastal Gusts: Western fjord regions saw wind speeds over 78 mph (35 m/s), prompting orange and yellow weather alerts.
  • Cruise Disruptions: Ambassador Cruise Line’s Ambience and Princess Cruises’ Regal Princess rerouted to avoid dangerous seas, canceling stops in Sandnes, Haugesund, and Stavanger.

 

Maritime Impacts

  • Cruise ships navigating between the UK and Norway were forced to alter itineraries, skip ports, and shelter in safer waters like the Firth of Clyde and Irish Sea.
  • Shore excursions were canceled and refunded, with safety prioritized over tourism.

     

 

Why It Mattered

Storm Floris was notable not just for its strength, but for its seasonal anomaly. August storms are rare, and with trees in full leaf and more people outdoors, the risk of falling debris and infrastructure damage was heightened. Experts warn that climate change may make such summer storms wetter and more frequent, though wind intensity projections remain uncertain.

For a deeper dive into the meteorological dynamics behind Floris, check out the Met Office’s analysis and The Conversation’s breakdown.

 

Other sources:

https://en.wikipedia.org/wiki/2024%E2%80%9325_European_windstorm_season

https://www.msn.com/en-gb/public-safety-and-emergencies/natural-disasters/most-homes-that-lost-power-during-storm-floris-reconnected-justice-secretary/ar-AA1K2dGr

https://confluence.ecmwf.int/display/FCST/202508+-+Windstorm+-Floris

https://uk.news.yahoo.com/power-back-most-homes-hit-203624834.html?guccounter=1&guce_referrer=aHR0cHM6Ly9jb3BpbG90Lm1pY3Jvc29mdC5jb20v&guce_referrer_sig=AQAAAJBwV5TLrpQVUVSJeuZ9un_HYrRrODoSrZa9Y1bbqDteHiTnhgGUnc0yVECmfa2llKaVnhlIGy6h35xKnUR83ukx8IhO6QdrmXkH77nzXRjlXnosudFtXZyTPGcQSInuz4WENTwRQzFuvYUgKfHVvPqgmunDpgBAK1D6n3I2QAAg

https://www.cruisemummy.co.uk/storm-floris-impacts-cruise-itineraries-between-uk-norway