Storm Aurore
Storm Aurore while located to the south of Ireland on 20 October
TypeExtratropical cyclone
European windstorm
Formed20 October 2021 (2021-10-20)
Dissipated23 October 2021 (2021-10-23)
Highest gust175 km/h (109 mph) in Fecamp, Normandy
Lowest pressure970[1] mb (28.64 inHg)
Tornadoes
confirmed		4
Max. rating1F1 tornado
Duration of
tornado outbreak2		13 hours and 35 minutes
Fatalities6 fatalities
Damage≥$100 million (2021 USD)[2]
Power outages>525,000
Areas affectedUnited Kingdom, France, Czech Republic, Poland, Netherlands, Germany, Russia, Denmark

1Most severe tornado damage; see Fujita scale
2Time from first tornado to last tornado

Storm Aurore was a notably early extratropical cyclone in late October 2021 that impacted several areas of Europe, causing substantial damages. The third named storm of the 2021–22 European windstorm season, Aurore was first noted on 20 October by Meteo France over the Atlantic Ocean, south of Ireland. As the system moved over central Europe on the next day, it subsequently merged with another extratropical cyclone named Hendrik before moving across central Europe, in which it brought several destruction across the region. It then was last noted on 23 October.

Gusts of 175 km/h (109 mph) were recorded in an area in Normandy, the highest in association with the storm. Many trees across the affected areas felled, while over half a million people lost electricity. Public establishments were also closed as a precaution to winds and flooding. Flash floods also affected the U.K. and a total of six deaths were confirmed from the system: Four in Poland, one in the United Kingdom and another in Germany. Damages were estimated by the Aon Benfield at greater than or equal to $100 million.[2]

Meteorological history

A strong extratropical cyclone over the north Atlantic Ocean was named Hendrik I by the Free University of Berlin on 16 October. At the same time, the FUB assigned another system near the cyclone Hendrik II.[3] On the next day, the first system remained stationary over the central Atlantic, while the second one moved near France.[4] Both systems interacted with each other on 18 October before the first cyclone became absorbed with the second, two days later.[5][6] At that day, the Météo-France officially named it Aurore from its naming lists as it entered the English Channel as it continued to strengthen, unleashing powerful wind gusts across its path.[7] It then entered the North Sea and swept northern Netherlands and Germany on the next day before moving northeastwards.[8][1] It then was last noted on 23 October.[9]

Impacts

France

In France, storm warnings were put in place by the Météo-France for Aurore, with an orange wind warning being issued on 21 October. The cyclone first impacted the Atlantic coast of Brittany, downing and uprooting trees and damaging roofs across the area. In Fecamp, Normandy winds reached 175 kilometres per hour (109 mph), the highest in association with the storm. As of 21 October, power electric utility Enedis reported over 250,000 households that are without electricity due to Aurore. Along Normandy, Champagne-Ardennes, Paris, and Île-de-France, train services were disrupted while an under-construction house in Plozévet, Finistère. Granville, Manche reported gusts of 143 kilometres per hour (89 mph) and Groix, Morbihan at 134 kilometres per hour (83 mph).[10][11] Telephone lines were also affected and several bridges across the affected portion of the country were unpassable for vehicles or their lanes being closed.[12] High tides also inundated several stores at Landerneau, Finistère. Three tornadoes, likely spawned by the storm were recorded in Plozévet, Riec-sur-Belon and Kernascléden.[13] The overall catastrophe was caught many French people in surprise.

United Kingdom

A yellow rainfall warning was issued for the United Kingdom for Aurore until 21 October. Flood warnings were also established due to the storm. The Thames Barrier was closed on that day to refrain London from possible flooding. The Essex fire service reported over 120 calls due to flooding incidents.[14] A section of the M23 motorway between Crawley and Pease Pottage was also closed as a result of flooding. More than 50 millimetres (2 in) of rainfall from the storm impacted portions of Southern England, with Somerset at 51.4 millimetres (2.02 in) from 20–21 October and Knockholt, Kent at 58 millimetres (2.3 in).[15][16][17][18] A man in East Grinstead, West Sussex was killed while two others were injured seriously and another two, minor due to a car accident when his car smashed into a tree. Two more cars collided with each other in Farnborough, Hants, but it is unknown whether it caused fatalities or additional injuries.[19] In total, 53 red flood warnings and 117 flood alerts were implemented in the country. In Woking, high winds caused cladding panels from the under construction Victoria Square skyscraper to fall to the street, resulting in evacuations but no injuries.[20] Meanwhile, as the storm impacted the country, snow hit the northern portion of the UK due to a passing cold front, but no damage was reported as of 21 October. East Sussex also saw a landslide between the rail stations of Crowborough and Uckfield.[21] Across the Channel Islands, several trees were felled and a lifeguard house was blown by the cyclone's winds.[22]

Czech Republic

Aurore left over 270,000 households in the country without a power supply, which further rose to 300,000 as of 21 October. This number was mainly focused at the Central Bohemian Region. Transportation services were also affected significantly, due to roadways being blocked by downed trees and railway lines. Several passengers at Prague Václav Havel Airport were also stranded due to strong winds from the storm, preventing them to board safely.[23] The ČEZ Distribuce declared the aforementioned region, Děčín, Česká Lípa, Chrudim, Pardubice, Trutnov, Náchod and Havlíčkův Brod due to the storm's damages. Firefighters also moved and destroyed the trees in Karlovy Vary that are obstructing to roads. Loose metal sheets and even a roof of a kindergarten school were also a problem for them. All three zoos in Ústí nad Labem were also closed. Two people was injured due to a tree smashing their car. Winds of over 100 kilometres per hour (62 mph) impacted the country.[24][25]

Poland

Due to Aurore, its meteorological bureau placed several areas in northwest Poland of second-degree warning on 21 October.[26] Several trees in Zielona Góra and Gorzow were uprooted as a result of the winds the cyclone brought on the country.[27] Greater Poland, Lower Silesia and Western Pomerania were the areas that are reportedly the most-affected areas by the storm. One person was injured in Bielsko-Biała, authorities there reported.[28] In Baszewice, a tree impacted a train, injuring three people out of its 76 passengers. The side windows and its front part was damaged, according to authorities there.[29] Another person was injured when another tree fell on his car; he was transferred to the hospital to treat his injuries. The highest concerns Polish authorities there reported are limited to felled trees and broken sapling branches. The roofing of a school in Stołeczna was swept away by the storm's strong winds while as of 21 October, over 9,693 calls for wind damages were already received by fire brigade authorities across the affected areas of the country. While loading a gate lifted by a crane, one person was non-fatally injured. Another was injured in Gryfino, West Pomeranian Voivodeship. Several zoos were also closed as a precaution. 4 deaths were reported due to the storm, in which two are in Lower Silesia. The other two are due to their car being crushed by a tree in Wrocław. 13 were overall injured by Aurore in the country.[30][31][32]

Germany

The Deutsche Bahn, a railway line station in Germany announced that train services across North Rhine-Westphalia, along with three states in its central and eastern portion were canceled due to the storm. Marine and vessel warnings were also posted, accordingly. Along the country's capital, two recreational zoos were also closed. According to the meteorological service in the country, the Deutscher Wetterdienst (German Weather Service), the cyclone is seen to brought gusts up to 105 km/h (65 mph), along with heavy downpours.[33] Many roofing of public establishments and other houses were damaged, including that of a stadium in Antwerp. Aurore also spawned a tornado in Kiel on 21 October, causing several trees to be uprooted and affect cars and public greenhouses being totally wrecked. Four individuals in Barendrecht were injured.[34] Weather stations in Feldberg and the Black Forest both recorded winds of 166 kilometres per hour (103 mph) on 22 October, associated with Aurore.[35] The only death from the storm in Germany was recorded on 21 October, when a train worker was killed by a falling tree branch.[36]

Belgium and Netherlands

Many trees were uprooted and house roofs and gutters were swept away by the winds in the Netherlands. Private establishments also suffered damages due to the storm, with over €25,000 (US$23,013) damage being incurred in Plopsaland De Panne. Many calls about obstructions, on public roadways or in front of houses, were also received by authorities there. Aurore also disrupted traffic in Antwerp. On its coastal port, many intermodal containers were affected. A truck swerved over a roadway into a canal, seriously injuring its driver. Train services in the country were cancelled and several areas experienced power outages. Over 376 calls were received by fire brigades and two injuries were also counted there.[37]

Highest gust per country

Country Highest gust Location
 France 175 km/h Fecamp, Normandy
 United Kingdom 152 km/h Margate
 Czechia 159 km/h Karlovy Vary
 Poland 163 km/h Rusinowo
 Germany 166 km/h Feldberg
 Netherlands 105 km/h Westdorpe
 Belgium 119 km/h Tournai
 Luxembourg 123 km/h Flaxweiler
 Denmark 125 km/h Gedser Odde
 Sweden 115 km/h Skanör
 Austria 145 km/h Saalbach-Hinterglemm
  Switzerland 150 km/h Säntis
 Liechtenstein 137 km/h Ruggell

References

  1. 1 2 Deutscher Wetterdienst (22 October 2021). "Analyse October 22, 2021 00 UTC" (in German). Free University of Berlin. Archived from the original on 9 May 2022. Retrieved 28 October 2021.
  2. 1 2 Global Catastrophe Recap October 2021 (PDF) (Report). Aon. 11 November 2021. Retrieved 22 November 2021.
  3. ↑ Deutscher Wetterdienst (16 October 2021). "Analyse October 16, 2021 00 UTC" (in German). Free University of Berlin. Archived from the original on 22 October 2021. Retrieved 28 October 2021.
  4. ↑ Deutscher Wetterdienst (17 October 2021). "Analyse October 17, 2021 00 UTC" (in German). Free University of Berlin. Archived from the original on 28 October 2021. Retrieved 28 October 2021.
  5. ↑ Deutscher Wetterdienst (18 October 2021). "Analyse October 18, 2021 00 UTC" (in German). Free University of Berlin. Archived from the original on 28 October 2021. Retrieved 28 October 2021.
  6. ↑ Deutscher Wetterdienst (20 October 2021). "Analyse October 20, 2021 00 UTC" (in German). Free University of Berlin. Archived from the original on 21 October 2021. Retrieved 28 October 2021.
  7. ↑ Météo-France [@meteofrance] (20 October 2021). "#tempêteAurore Première tempête de la saison 2021-2022 nommée par Météo-France donnant un coup de vent en fin de journée et la nuit prochaine, tempétueux sur les côtes. Rafales attendues #vigilanceOrange Soyez prudents et restez informés" (Tweet). Retrieved 20 October 2021 – via Twitter.
  8. ↑ Deutscher Wetterdienst (21 October 2021). "Analyse October 21, 2021 00 UTC" (in German). Free University of Berlin. Archived from the original on 28 October 2021. Retrieved 28 October 2021.
  9. ↑ Deutscher Wetterdienst (23 October 2021). "Analyse October 23, 2021 00 UTC" (in German). Free University of Berlin. Archived from the original on 9 May 2022. Retrieved 28 October 2021.
  10. ↑ "Storm Aurore leaves 250,000 French homes without power". France 24. 21 October 2021. Archived from the original on 25 October 2021. Retrieved 26 October 2021.
  11. ↑ "Tempête Aurore : l'alerte orange levée, 40 000 foyers encore sans électricité" [Storm Aurora: the orange alert lifted, 40,000 households still without electricity]. Le Monde (in French). 21 October 2021. Archived from the original on 26 October 2021. Retrieved 21 October 2021.
  12. ↑ "Tempête Aurore : la région parisienne et l'est de la France en vigilance orange pour vents violents" [Storm Aurora: the Paris region and eastern France on orange alert for strong winds]. Le Monde. 20 October 2021. Archived from the original on 26 October 2021. Retrieved 26 October 2021.
  13. ↑ Paul-Alexandre, Aubry (21 October 2021). "Tempête Aurore : Des dégâts parfois impressionnants en Bretagne et Pays-de-la-Loire". 20 Minutes (in French). Archived from the original on 21 October 2021. Retrieved 22 October 2021.
  14. ↑ "Southern England hit by floods as Storm Aurore arrives from France". The Guardian. 21 October 2021. Archived from the original on 24 October 2021. Retrieved 26 October 2021.
  15. ↑ "Storm Aurore batters southeast England". The Times. 20 October 2021. Archived from the original on 22 October 2021. Retrieved 26 October 2021.
  16. ↑ Keane, Daniel (22 October 2021). "Storm Aurore: Flooding across South-East England causes commuter chaos". The Standard. Archived from the original on 23 October 2021. Retrieved 26 October 2021.
  17. ↑ Corcoran, Sophie (22 October 2021). "Flood warnings issued and Thames Barrier closed in wake of Storm Aurore". The Standard. Archived from the original on 26 October 2021. Retrieved 26 October 2021.
  18. ↑ "Flooding and transport disruption after Storm Aurore hits South East". BBC News. 22 October 2021. Archived from the original on 25 October 2021. Retrieved 26 October 2021.
  19. ↑ Hockaday, James (21 October 2021). "Man killed and four injured after car slams into tree in Storm Aurore". Metro. Archived from the original on 21 October 2021. Retrieved 22 October 2021.
  20. ↑ Prior, Grant (25 October 2021). "Cladding panels "dislodged" from McAlpine hotel job". Construction Enquirer. Retrieved 23 May 2022.
  21. ↑ Jones, Harrison (21 October 2021). "Cars abandoned in floods and stations closed as Storm Aurore lashes UK". Metro. Archived from the original on 21 October 2021. Retrieved 26 October 2021.
  22. ↑ "In pictures: Storm Aurore brings disruption to Channel Islands". ITV. 21 October 2021. Archived from the original on 22 October 2021. Retrieved 26 October 2021.
  23. ↑ "Trees Uprooted, Homes Without Power: Europe Reels From Aurore Storm". NDTV. 22 October 2021. Archived from the original on 22 October 2021. Retrieved 26 October 2021.
  24. ↑ "Silný vítr v Česku lámal stromy a ničil střechy. ČEZ vyhlásil kalamitní stav" [A strong wind in the Czech Republic broke trees and destroyed roofs. CEZ has declared a calamity]. Denik (in Czech). 21 October 2021. Archived from the original on 26 October 2021. Retrieved 26 October 2021.
  25. ↑ "Silný vítr lámal stromy a shazoval střechy, surfaře nechtěl pustit z přehrady" [A strong wind was breaking trees and knocking down roofs, he didn't want to let the surfers out of the dam]. Denik (in Czech). 21 October 2021. Archived from the original on 26 October 2021. Retrieved 26 October 2021.
  26. ↑ "Uwaga na silny wiatr. IMGW wydał ostrzeżenie dla Poznania i północno-zachodniej Wielkopolski" [Beware of strong winds. IMGW issued a warning to Poznań and north-west Wielkopolska]. Gazeta Wyborcza (in Polish). 21 October 2021. Archived from the original on 26 October 2021. Retrieved 26 October 2021.(subscription required)
  27. ↑ "Silny wiatr nadciąga z Niemiec. W Zielonej Górze i Gorzowie łamie już drzewa" [A strong wind is coming from Germany. He is already breaking trees in Zielona Góra and Gorzów]. Gazeta Wyborcza (in Polish). 21 October 2021. Archived from the original on 26 October 2021. Retrieved 26 October 2021.(subscription required)
  28. ↑ "Silny wiatr dał o sobie znać w województwie śląskim. 120 interwencji strażaków" [Strong wind made itself felt in the Silesian Voivodeship. 120 interventions by firefighters]. Gazeta Wyborcza (in Polish). 21 October 2021. Archived from the original on 26 October 2021. Retrieved 26 October 2021.(subscription required)
  29. ↑ "Pociąg osobowy uderzył w powalone przez wichurę drzewo. Są ranni!" [The passenger train crashed into a tree that was felled by the storm. They are injured!]. Fakt (in Polish). 21 October 2021. Archived from the original on 21 October 2021. Retrieved 26 October 2021.
  30. ↑ "Pogodowy armagedon! Hendrik dotarł do Polski, wieje coraz silniej, potężny sztorm na morzu [ZDJĘCIA]" [Weather Armageddon! Hendrik has reached Poland, the blows stronger and stronger, a powerful storm at sea [PHOTOS]]. Fakt (in Polish). 21 October 2021. Archived from the original on 23 October 2021. Retrieved 26 October 2021.
  31. ↑ "Wichury przechodzą nad Polską. Zginęły 4 osoby. Jest naprawdę niebezpiecznie!" [Windstorms pass over Poland. 4 people died. It is really dangerous!]. Fakt (in Polish). 21 October 2021. Archived from the original on 24 October 2021. Retrieved 26 October 2021.
  32. ↑ "Drzewo przygniotło młodą parę z psem. Byli bez szans [ZDJĘCIA]" [A tree crushed a young couple with a dog. They were without a chance [PHOTOS]]. Fakt (in Polish). 22 October 2021. Archived from the original on 22 October 2021. Retrieved 26 October 2021.
  33. ↑ "Deaths in Poland as Storm 'Aurore' wreaks havoc across Europe". DW News. 22 October 2021. Retrieved 28 October 2021.
  34. ↑ "Strong storm causes 4 deaths in Poland, damage across Europe". Associated Press. 22 October 2021. Retrieved 28 October 2021.
  35. ↑ "Classement rafales max de vent sur 24h entre 06h et 06h locales" [Classification max wind gusts over 24 hours between 06h and 06h local]. Meteociel.fr (in French). 22 October 2021. Retrieved 28 October 2021.
  36. ↑ "Lokführer bei Templin von Ast erschlagen" [Train driver killed by Ast at Templin]. Nordkurier (in German). 22 October 2021. Retrieved 28 October 2021.
  37. ↑ "OVERZICHT. Zo erg sloeg storm Aurore toe in jouw regio" [OVERVIEW. That's how bad storm Aurore hit your area]. Nieuwsblad (in Dutch). 21 October 2021. Archived from the original on 28 October 2021. Retrieved 28 October 2021.
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