Wikipedia

Hurricane Kirk (2024)

This article is about the 2024 Atlantic hurricane. For other storms of the same name, see List of storms named Kirk.

Hurricane Kirk, known as Storm Kirk while extratropical, was a large and powerful tropical cyclone that caused significant damage in portions of Western Europe after transitioning into a European windstorm. The eleventh named storm, seventh hurricane, and third major hurricane of the 2024 Atlantic hurricane season, Kirk originated from a broad area of low pressure near Cape Verde. Showers associated with the system became better organised, and satellite imagery on 29 September showed that the storm had intensified into a tropical depression; it became Tropical Storm Kirk the next day.

Hurricane Kirk
Hurricane Kirk at peak intensity in the open Atlantic early on 4 October
Meteorological history
Formed29 September 2024 (2024-09-29)
Extratropical7 October 2024 (2024-10-07)
Dissipated13 October 2024 (2024-10-13)[1][2]
Category 4 major hurricane
1-minute sustained (SSHWS/NWS)
Highest winds145 mph (230 km/h)
Lowest pressure934 mbar (hPa); 27.58 inHg
Overall effects
Fatalities1
Damage>$10.9 million (2024 USD)
Areas affected
Part of the 2024 Atlantic hurricane and 2024–25 European windstorm seasons

Favourable atmospheric and oceanic conditions fostered strengthening, though this trend levelled off after Kirk became a hurricane on 1 October. A period of renewed rapid intensification brought Kirk to peak intensity as a Category 4 hurricane on the Saffir–Simpson scale, with winds of 230 km/h (145 mph), on 4 October. Gradually curving to the northeast, Kirk weakened after peak intensity due to cooler sea surface temperatures, dry air, and wind shear, while also gaining size with latitude; it became an extratropical cyclone on 7 October. As it moved eastwards towards Western Europe, Kirk became the fifth storm of the 2024–25 European windstorm season. Additionally, 6 tornadoes occurred as it made landfall in Europe.[3]

Meteorological history

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Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
  Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

The National Hurricane Center (NHC) first forecast the possibility of tropical cyclogenesis in the eastern tropical Atlantic on 27 September.[4] The next day, the NHC began monitoring a broad area of low pressure associated with a tropical wave producing limited shower activity west of Cabo Verde, noting that environmental conditions were favourable for development.[5] As showers and thunderstorms associated with the disturbance became better organised,[6] satellite imagery on 29 September revealed that the disturbance's circulation was becoming better defined.[7] As a result, by 21:00 UTC that day, it developed into Tropical Depression Twelve. At that time, a prominent subtropical ridge to the depression's north steered the system westward.[8]

Organization was at first gradual as the depression continued to produce deep convection.[9] The depression strengthened into Tropical Storm Kirk at 15:00 UTC on 30 September, with satellite microwave imagery from a few hours earlier indicating that a nascent core with a partial eyewall had formed.[10] Shortly thereafter, Kirk's intensification paused, its structure improving little as it tracked west-northwest along the southwestern edge of the subtropical ridge.[11] This pause was short-lived, with intensification resuming on 1 October as the storm's satellite presentation improved. Signs of dry air on Kirk's western flank remained apparent, possibly introduced by some northerly mid-level shear.[12] Kirk's structure continued to improve on microwave imagery, and the storm intensified to a Category 1 hurricane at 21:00 UTC that day.[13] After an intrusion of dry air briefly interrupted further intensification,[14] continued improvements to Kirk's structure signalled a resumption in strengthening throughout 2 October.[15]

Kirk then initiated an episode of rapid intensification, becoming a Category 3 hurricane at 00:00 UTC on 3 October,[16] with satellite imagery displaying a ragged eye surrounded by multiple rotating convective bursts.[17] Soon after, yet another intrusion of dry air halted this period of rapid intensification, causing Kirk to weaken slightly.[18] This disruption was also short-lived, as the hurricane's structure quickly recovered, and by 21:00 UTC that day Kirk strengthened into a Category 4 hurricane.[19] Kirk then strengthened to its peak intensity early on 4 October, with sustained winds of 230 km/h (145 mph) and a minimum central pressure of 934 mbar (27.6 inHg); the NHC noted a well-defined circular eye 37 km (23 mi) wide surrounded by a ring of deep convection.[20][21] Soon after, microwave imagery suggested an eyewall replacement cycle had initiated, causing the hurricane to begin weakening. As an outer convective band wrapped around the eyewall, Kirk's eye became cloud-filled and its cloud tops warmed.[22] Southwesterly shear and intrusions of dry air additionally contributed to weakening, with Kirk falling to Category 3 intensity at 09:00 UTC on 5 October. At the same time, the hurricane began a northward turn, influenced by a shortwave trough placed over the west-central Atlantic and the subtropical ridge to its east.[23] Kirk then weakened further to Category 2 intensity 24 hours later under the effects of increasing southwesterly shear, the vertical structure of its core becoming disrupted as a result.[24]

Another 12 hours later, at 21:00 UTC on 6 October, Kirk weakened to a Category 1 hurricane, with the NHC noting that its extratropical transition had begun.[25] Tracking over cooler waters as it progressed through its extratropical transition, the NHC noted that Kirk's core had rapidly degraded,[26] and by 19:00 UTC on 7 October, it had completed its transition to an extratropical cyclone as it tracked east-northeast over the northeastern Atlantic.[27] The extratropical cyclone then passed north of the Azores, before moving towards the west coast of France and Western Europe.[28] The system weakened inland as it moved northward into Scandinavia, where it dissipated on 13 October.[citation needed]

Preparations

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The NHC issued advisories saying that waves from Kirk could create life-threatening conditions in Bermuda and the East Coast of the United States.[29][30]

A red alert was issued in the western group of the Azores as swells generated by a weakening Hurricane Kirk were projected to batter the coastline. Some of the more eastern groups saw orange and yellow alerts issued. All fishing boats and ships at ports were removed from the coast and placed into safer areas.[29][31]

France enforced a yellow rain warning for much of the except for the far southeast of the country and regions on the English Channel.[32] An orange rain warning with an accompanying yellow wind warning was issued for parts of the northwest, including Paris, as well as for the Pyrenees on the Spanish border. A red warning was later added for Seine-et-Marne for flooding.[33] In Spain warnings were issued for widespread strong winds, with gusts potentially reaching hurricane force in parts of northern Spain, heavy rain, especially in Galicia and the western part of the Iberian Peninsula, and significant wave heights along the Atlantic coast. A red wind warning was issued for Picos de Europa where winds up to 86 mph (140km/h) where expected.[34] Many flights leaving Santander, A Coruña, Bilbao, Vigo, and Santiago were cancelled.[35] In Portugal, an orange coastal event warning was enforced due to the anticipated large wave heights of 5–6 metres (16–20 ft), with a yellow wind warning where, southwest winds with gusts of up to 75 km/h (47 mph), reaching up to 100 km/h (62 mph) in mountainous areas.[36][37] Many flights were delayed or cancelled and parks were closed.[38]

Orange rain warnings were issued for all of Luxembourg in response to Kirk.[39] A yellow rain warning was issued for the entirety of Andorra.[40] Germany also issued orange rain warnings for many central areas, as well as a red rain warning encompassing many south-western areas. A orange wind warnings has also been issued for southern regions.[41] Switzerland as also issued yellow wind warnings for central and eastern parts of the country.[42] An amber warning was also issued in Belgium.[38][43] Citizens in Limburg in the Netherlands were urged to prepare for flooding and heavy rainfall.[44]

More than 1 million people across coastal areas of Europe were placed under evacuation orders.[45]

Impact

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See also: 2024–25 European windstorm season § Ex-Hurricane Kirk

Iberian Peninsula

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Storm Kirk over western Europe on 9 October

In Porto, Portugal’s main northern city, the storm hit hardest, uprooting 400 trees. Cars were damaged, and rail services were interrupted near Barcelos, also in the north. The storm cut power to more than 300,000 households, according to the country's electricity supplier. Weather and civil protection officials, who had predicted winds of up to 75 mph (120 kilometres per hour) and heavy rain, placed the coast on a yellow alert as waves reached up to seven metres (23 feet) high. While not many homes were damaged, multiple vehicles were. The Linha do Minho was interrupted by falling trees.[46] In Vila Nova de Gaia, a crane was knocked over, damaging a large building.[47] Spanish weather officials issued an orange alert for the north and northwest of the country, warning of winds up to 87 mph (140 kilometres per hour) in the Asturias region. In Galicia, the northwest reported roads blocked by mudslides and fallen trees in urban areas. Portugal's civil protection authority reported over 1,300 incidents from Tuesday night to Wednesday, with three-quarters involving fallen trees in the north. Spain also experienced heavy winds and rainfall, with waves as high as seven metres crashing ashore, according to local media. Storm Kirk primarily wreaked havoc in the northern half of Spain. Strong gusts caused delays and cancellations in rail and air services, park closures, collapsed roofs, and damage from fallen trees. In Castile and León, 5 people were injured due to falling objects. These injuries were in Burgos, Soria, and Segovia. In Valladolid, a roof was completely blown off of a building, but no one was hurt. A total of 370 incidents were reported in the region.[48] A scaffolding tower collapsed due to hurricane-force winds in Berria, Cantabria. A foot bridge over the Douro River collapsed due to Kirk.[49][50] Two people required medical attention after a car accident in Valladolid.[51][38] Strong winds and heavy rainfall battered Andorra due to Kirk's circulation, with maximum gusts of 126 kilometres per hour (78 mph) in Port d'Envalira and rainfall of 34 millimetres (1.3 in).[52] Strong winds from Kirk severely impacted Portugal's apple production, with over 65% of the crops suffering damage. Losses from this are estimated to be in the "tens of millions of euros." (USD$10.9 million).[53]

France

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At least 5 tornado reports were reported in France.[54] An IF0.5 Tornado struck Rots, downing trees and damaging roofs and barns.[55][56][57] An IF1 tornado hit Brive-la-Gaillarde, downing trees, fences, and powerlines.[55][58] Two waterspouts were observed near Flamanville.[55] Another IF1 tornado touched down in Cubry-lès-Faverney, damaging 8 houses, 3 vehicles, and 2 garages, causing one garage to collapse.[55][59] In southern France, a storm swell near the port city of Sete overturned three boats, killing one amateur sailor and leaving another two in critical condition, according to Herault department authorities.[60] Additionally, 64,000 people in the south of France were left without power, as reported by Enedis to AFP, while several departments saw roads cut off by floodwaters. The worst-hit area, Pyrenees-Atlantiques, saw 35,000 households lose electricity, with other southwestern and central eastern departments also affected.[61][62] Over 67,000 more people were left without power after the storm pushed through.[63] The Grand Morin river swelled, leading to flooding along the coast.[64] The Paris-Montsouris weather station recorded 71 millimetres (2.8 in) of rainfall, a number not seen since 1920. The heavy rainfall led to widespread flooding across numerous regions in France.[65]

By midday on 10 October, over 48,000 homes were still without power, and 161 towns were under a flood warning.[66][65]

Elsewhere

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In Belgium, the Eau Rouge River, near the French border, overflowed, leading to flooding. Around the Ardennes region in Belgium, Luxembourg, and France, the most rain was reported. Couvin saw major flooding, leading to a communal emergency plan getting activated.[67] In Luxembourg, the heaviest rainfall was around the Upper Sûre Lake. A park in Mersch was flooded, but only few homes suffered damage.[68] In Sweden, the regions of Västerbotten and Västernorrland, 50 millimetres (2.0 in) of rain fell. The rainfall led to many streams overflowing. A yellow and orange alert was issued in the country.[69] In Switzerland, the fire department carried out over 10 operations in St. Gallen due to high winds from Kirk.[70] High winds generated by Kirk were reported in Germany, with windspeeds reaching 65 kilometres per hour (40 mph).[71] The rail network between Stuttgart and Filderstadt was suspended due to a damaged overhead line. Winds from Kirk also knocked down trees, some of which also ended up on train tracks. In the southwest, falling trees caused 30 emergencies in which the fire department was involved.[72]

See also

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References

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  1. ^ "Europe Weather Analysis, 12 October 2024" (in German). Deutscher Wetterdienst (FU Berlin). 12 October 2024. Retrieved 14 October 2024.
  2. ^ "Europe Weather Analysis, 13 October 2024" (in German). Deutscher Wetterdienst (FU Berlin). 13 October 2024. Retrieved 14 October 2024.
  3. ^ https://eswd.eu/
  4. ^ Kelly, Larry; Keren, Rosado-Vazquez (27 September 2024). Seven-Day Graphical Tropical Outlook (Report). Miami, Florida: National Hurricane Center. Retrieved 22 October 2024.
  5. ^ Robbie, Berg (28 September 2024). Seven-Day Graphical Tropical Outlook (Report). Miami, Florida: National Hurricane Center. Retrieved 29 September 2024.
  6. ^ Blake, Eric; Mahoney, Aidan (29 September 2024). Seven-Day Graphical Tropical Outlook (Report). Miami, Florida: National Hurricane Center. Retrieved 29 September 2024.
  7. ^ Blake, Eric; Mahoney, Aidan (29 September 2024). Seven-Day Graphical Tropical Outlook (Report). Miami, Florida: National Hurricane Center. Retrieved 29 September 2024.
  8. ^ Tropical Depression Twelve Discussion Number 1 (Report). Miami, Florida: National Hurricane Center. 29 September 2024. Retrieved 27 September 2024.
  9. ^ Tropical Depression Twelve Discussion Number 2 (Report). Miami, Florida: National Hurricane Center. 29 September 2024. Retrieved 22 October 2024.
  10. ^ Tropical Storm Kirk Discussion Number 4 (Report). Miami, Florida: National Hurricane Center. 29 September 2024. Retrieved 22 October 2024.
  11. ^ Hagen, Andrew (1 October 2024). "Tropical Storm Kirk Discussion Number 7". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  12. ^ Papin, Philippe (1 October 2024). "Tropical Storm Kirk Discussion Number 8". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  13. ^ Mora, Cassandra; Papin, Philippe (1 October 2024). "Hurricane Kirk Discussion Number 9". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  14. ^ Bucci, Lisa (2 October 2024). "Hurricane Kirk Discussion Number 10". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  15. ^ Papin, Philippe (2 October 2024). "Hurricane Kirk Discussion Number 13". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  16. ^ Bucci, Lisa; Cangialosi, John (3 October 2024). "Hurricane Kirk Discussion Number 14". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  17. ^ Bucci, Lisa (3 October 2024). "Hurricane Kirk Discussion Number 15". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  18. ^ Berg, Robbie (3 October 2024). "Hurricane Kirk Discussion Number 16". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  19. ^ Kelly, Larry (3 October 2024). "Hurricane Kirk Discussion Number 18". www.nhc.noaa.gov. National Hurricane Center. Retrieved 22 October 2024.
  20. ^ Reinhart (4 October 2024). "Hurricane Kirk Advisory Number 20". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  21. ^ Reinhart (4 October 2024). "Hurricane Kirk Discussion Number 20". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  22. ^ Beven, Jack (4 October 2024). "Hurricane Kirk Discussion Number 21". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  23. ^ Reinhart (5 October 2024). "Hurricane Kirk Discussion Number 24". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  24. ^ Reinhart (6 October 2024). "Hurricane Kirk Discussion Number 28". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  25. ^ Hagen, Andrew (6 October 2024). "Hurricane Kirk Discussion Number 30". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  26. ^ Cangialosi, John (7 October 2024). "Hurricane Kirk Discussion Number 32". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  27. ^ Hagen, Andrew (7 October 2024). "Hurricane Kirk Discussion Number 33". www.nhc.noaa.gov. National Hurricane Center. Retrieved 24 October 2024.
  28. ^ "Ex-hurricane Kirk likely to pass over Luxembourg, bringing rain and wind". Kirchberg, Luxembourg: RTL Today. 7 October 2024. Retrieved 8 October 2024.
  29. ^ a b Pinto, Luís M. "Hurricane Kirk triggers high-surf warnings in southwest European coastlines". Surfertoday. Retrieved 8 October 2024.
  30. ^ Wulfeck, Andrew (3 October 2024). "Former Hurricane Kirk on path to impact Europe as massive post-tropical cyclone". FOX Weather. Retrieved 8 October 2024.
  31. ^ Donn, Natasha. "Azores islanders prepare for Cyclone Kirk". portugalresident.com. Retrieved 7 October 2024.
  32. ^ "VIGILANCE METEO FRANCE DEMAIN". vigilance.meteofrance.fr.
  33. ^ "VIGILANCE METEO SEINE-ET-MARNE (77) par Météo-France". vigilance.meteofrance.fr (in French). Retrieved 9 October 2024.
  34. ^ Meteorología, Agencia Estatal de. "Avisos meteorológicos - Agencia Estatal de Meteorología - AEMET. Gobierno de España". www.aemet.es.
  35. ^ ABC (9 October 2024). "Storm Kirk batters Spain and forces more than 60 flights to be cancelled or diverted". Sur in English. Retrieved 9 October 2024.
  36. ^ "IPMA - Weather warnings in timeline". www.ipma.pt.
  37. ^ "Tempestade Kirk aproxima-se de Portugal Continental" (in European Portuguese). 8 October 2024. Retrieved 9 October 2024.
  38. ^ a b c "Countries on alert as tail-end of Storm Kirk reaches Europe". euronews. 9 October 2024. Retrieved 9 October 2024.
  39. ^ "Vigilances - MeteoLux - Portail Météo Luxembourg". www.meteolux.lu.
  40. ^ Redacció (8 October 2024). "L'exhuracà Kirk portarà vents forts demà a partir del matí". Diari d'Andorra (in Catalan). Retrieved 9 October 2024.
  41. ^ "Wetter und Klima - Deutscher Wetterdienst - Warnungen aktuell". www.dwd.de.
  42. ^ "Homepage - MeteoSwiss". www.meteoswiss.admin.ch.
  43. ^ Hoof, Thibaut Van (9 October 2024). "La tempête Kirk va arroser la Belgique dans les prochaines heures : voici les régions les plus menacées par les inondations". La Libre.be (in French). Retrieved 9 October 2024.
  44. ^ "KNMI - Donderdag kans op storm met veel regen door ex-orkaan Kirk". www.knmi.nl (in Dutch). Retrieved 10 October 2024.
  45. ^ "Tail-end of Hurricane Kirk hits Europe, threatens floods in France". reuters.com. 9 October 2024. Retrieved 9 October 2024.
  46. ^ "Storm Kirk causes 1,300 incidents in Portugal". www.theportugalnews.com. Retrieved 9 October 2024.
  47. ^ "Mau tempo deixa escolas encerradas, estradas cortadas e faz vários estragos em Portugal". www.cmjornal.pt (in European Portuguese). Retrieved 9 October 2024.
  48. ^ "Seis heridos, vuelos cancelados, retrasos de trenes, tejados caídos y cortes de luz por la potente borrasca Kirk". ELMUNDO (in Spanish). 9 October 2024. Retrieved 9 October 2024.
  49. ^ "Kirk provoca el hundimiento de una pasarela sobre el Duero en Soria". La Razón (in Spanish). 9 October 2024. Retrieved 9 October 2024.
  50. ^ "Las consecuencias de la borrasca Kirk, en directo: España en alerta por rachas de viento y fuertes lluvia". La Razón (in Spanish). 9 October 2024. Retrieved 9 October 2024.
  51. ^ "Ocho heridos y más de de un millar de incidentes deja «Kirk» en Castilla y León". La Razón (in Spanish). 9 October 2024. Retrieved 9 October 2024.
  52. ^ Redacció (8 October 2024). "Ràfegues de 126 km/h a la Tossa d'Espiolets i llamps a la Dama de Gel i l'estadi Comunal". Diari d'Andorra (in Catalan). Retrieved 9 October 2024.
  53. ^ Rua, Guilherme (10 October 2024). "Storm Kirk Devastates Northern Portugal's Apple Harvest, Slashing Production by 30%". tridge.com. Retrieved 19 October 2024.
  54. ^ https://eswd.eu/
  55. ^ a b c d Cite error: The named reference ESWD was invoked but never defined (see the help page).
  56. ^ "[Vidéo] Tempête Kirk. Des arbres couchés sur la route après une mini-tornade à Rots".
  57. ^ "Une tornade de 200 mètres de large fait des dégâts près de Caen". 9 October 2024.
  58. ^ "EN IMAGES - Un coup de vent a fait de nombreux dégâts à Brive mardi soir - France Bleu". 9 October 2024.
  59. ^ "Une mini-tornade dévaste plusieurs habitations - la Presse de Vesoul".
  60. ^ "Storm Kirk kills 1 in France, leaves 2 in critical condition". www.aa.com.tr. Retrieved 10 October 2024.
  61. ^ "One dead as storm Kirk tears through Spain, Portugal, France". 9 October 2024.
  62. ^ Presse, AFP-Agence France. "One Dead As Storm Kirk Tears Through Spain, Portugal, France". www.barrons.com. Retrieved 9 October 2024.
  63. ^ Vidalon, Dominique. "Tail-end of Hurricane Kirk leaves at least one dead in France". businesslive.co.za. Retrieved 10 October 2024.
  64. ^ "Hurricane Kirk remnants reach France, leaving at least one dead". France 24. 10 October 2024. Retrieved 10 October 2024.
  65. ^ a b "Storm Kirk, intensified by climate change, brings France record rainfall". 11 October 2024. Retrieved 11 October 2024.
  66. ^ Météo-France. "Avertissement Pluies Intenses Communes - Vigicrues Flash". apic.meteofrance.fr (in French). Retrieved 11 October 2024.
  67. ^ "'Kirk' causes flooding and damage in France and Belgium". www.euronews.com. 10 October 2024. Retrieved 10 October 2024.
  68. ^ "Luxembourg escapes major damage after former hurricane passes by". Luxembourg Times. 11 October 2024. Retrieved 10 October 2024.
  69. ^ "Regn och översvämningar i orkanen Kirks spår". www.aftonbladet.se (in Swedish). 11 October 2024. Retrieved 11 October 2024.
  70. ^ "Heftiger Sturm in Rorschach". blick.ch. Retrieved 13 October 2024.
  71. ^ "Europe's Wind Generation Soars on Remnants of Hurricane Kirk". Yahoo Finance. 11 October 2024. Retrieved 12 October 2024.
  72. ^ "Ex-Hurrikan "Kirk" sorgt in Baden-Württemberg für Probleme im Bahnverkehr". FAZ.NET (in German). 10 October 2024. Retrieved 13 October 2024.
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