Storm depression Yves

from Wikipedia, the free encyclopedia
Xanthios, Yves / Ana
Front systems Tue, December 12th, 00 UTC, warm front over the Alps, cold air ingress over the North Sea
Front systems Tue, December 12th, 00 UTC, warm front over the Alps, cold air ingress over the North Sea
Gravure system North Atlantic lows
storm Snow storm , hair dryer at hurricane strength
Data
Climax 10-12 December 2017
Wind speed 196 km / h ( Piz Martegnas GR, 2670 m, 11.12. )
Pressure difference 17.5  hPa ( Lugano - Zurich , 11.12. )
Amount of snow 60 cm / 24 h ( Sion VS, 10./11.12. )
consequences
affected areas Central Europe , especially Switzerland , Austria

The storm depression Yves , Ana in Western Europe , was a storm that led to an extreme foehn storm in the Alps in mid-December 2017 and to snow chaos in parts of Central Europe .

meteorology

The low Yves / Ana was created on 10/11. December over the Bay of Biscay as an offshoot of a low near the British Isles (Xanthios) and an ingress of polar cold air over the Atlantic. It then moved very quickly on a north-westerly route across the Baltic Sea to northern Scandinavia , where it got lost around the 13th of the month.

Deep Xanthios had already led to heavier snow down to the lower elevations, at the rear of Yves it continued to snow. There was large amounts of snow in the southern damming of the Alps, around 60 cm 10/11. December in Sion , Valais , well above the previous record of 1971. At the front of the low, a strong storm arose, which moved across the Alps as an intense northern foehn . Meteo- Switzerland determined a maximum pressure difference between Lugano and Kloten (south and north of the main Alpine ridge) of 17.5  hPa , the third highest value determined in the last 50 years. As a result, the foehn reaches high hurricane strengths in the lowlands and was in places the most violent storm ever recorded. At the Tauern tunnel north portal at Feuersang (2090 m) near Bad Gastein ( Land Salzburg ), 249 km / h were measured (the value is however controversial), at Piz Martegnas (2670 m) above Savognin ( Graubünden ) 196 km / h the Gütsch ob Andermatt  (2283 m, Uri ) the maximum value was 191 km / h, or 189 km / h on the Aineck near St. Margarethen im Lungau (Salzburg), and 176 km / h on the Patscherkofel near Innsbruck ( Tyrol ) (highest measured value the ZAMG). In the lowlands and the Foehn valleys, the storm in the Swiss Prealps and in the Eastern Alps from the Karawanken to the Graz Basin to the eastern edge of the Alps reached values ​​of 120 to 130 km / h. The temperatures in the valleys reached +15 ° C.

The low was the first to be named in Spanish after the newly introduced naming system of Météo-France (France), AEMET (Spain) and IMPA (Portugal). It is a coincidence that the FU Berlin gave it a name that sounds French.

The storm is part of a series of extraordinary storms from the beginning of October of the year, from storm low Xavier to Ireland hurricane Ophelia , the fast- moving Herwart , the Mediterranean orcan (Medicane) Numa / Attila as well as the Scandinavian hurricane Ylva . They were all caused by a phase of extremely fluctuating and unstable westerly wind drift , strong turbulence on the polar front and a highly active North Atlantic and Arctic oscillation .

consequences

The Austrian districts of Völkermarkt in Lower Carinthia (particularly Rosental and Jauntal ), Deutschlandsberg in West and Leibnitz in South Styria were particularly hard hit by the storm . The civil defense alarm was triggered in the Völkermarkt area on the morning of the 12th , and the emergency services could no longer move out to protect themselves. In Carinthia and Southeast Styria, the armed forces moved out to assist . There was damage to buildings, vehicles, power lines with power outages, traffic obstructions and the closure of roads and railway lines, numerous accidents and strong winds . There was also severe damage in Liechtenstein , Vorarlberg ( Rhine Valley ), Salzburg ( Inner Mountains ), and Lower Austria ( Most and industrial districts ).

In western Switzerland the consequences were limited, in south-eastern Switzerland the snow caused widespread traffic obstructions.

See also

Individual evidence

  1. ↑ a b c d e f g h i Föhn storm and lots of fresh snow in Valais . MeteoSwiss: Blog , December 11, 2017.
  2. ↑ a b c Where the foehn storm blew the hardest: 250 km / h were measured at Feuersang in Gastein. In: Salzburger Nachrichten online, December 12, 2017.
  3. ↑ Forecast for Mon June 17, 2013, 12:00 UTC. DWD weather map, website of the Free University of Berlin;
    Weather situation as of June 17, 2017, 12 UTC. ZAMG: Current weather map and map archive ;
    NCEP, June 17, 2017, 7:00 p.m. locale. Meteofrance, meteociel.fr.
  4. ↑ Forecast for Mon 11.12.2017, 12:00 UTC. DWD; Weather situation as of November 11, 2017, 12 UTC. ZAMG; NCEP, December 11, 2017, 7:00 p.m. locale. meteociel.fr.
  5. ↑ Forecast for Tue 12.12.2017, 12:00 UTC. DWD; Weather situation as of November 12, 2017, 12 UTC. ZAMG; NCEP, December 12, 2017, 7:00 p.m. locale. meteociel.fr.
  6. ↑ Viharos széllel érkezik a rekordközeli meleg a jövő hét első napjaiban. OMSZ: Meteorológiai hírek , December 12, 2017.
  7. ↑ Forecast for Wed 12/13/2017, 12:00 UTC. DWD; Weather situation on November 13, 2017, 12 UTC. ZAMG; NCEP, December 13, 2017, 7:00 p.m. locale. meteociel.fr.
  8. ↑ Deep "YVES" - a short balance. DWD: Topic of the day , December 12, 2017.
  9. ↑ a b c Föhn storm swept across the country at 150 mph. wetter.at, December 11, 2017.
  10. ↑ a b c Foehn storm causes severe damage. ORF.at, December 12, 2017.
  11. ↑ Ana, la primera borrasca con nombre de España. In: ABC online, December 7, 2017.
  12. ↑ Foehn storm turned into a hurricane. kärnten.ORF.at, December 12, 2017;
    Foehn storm sweeps over southern Austria (civil defense alarm due to foehn storm in the entire Völkermarkt district). In: Wiener Zeitung , December 12, 2017.
  13. ↑ Storm: Thousands of households without electricity. steiermark.ORF.at, December 12, 2017.
  14. ↑ a b Foehn storm balance in Salzburg: wind peaks of 170 km / h, 54 fire brigade operations. salzburg24.at, last updated December 13, 2017.
  15. ↑ a b Snowfalls create precarious conditions in Ticino. ( Memento of the original from December 14, 2017 in the Internet Archive ) Info: The @1@ 2Template: Webachiv / IABot / www.luzernerzeitung.ch archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. In: Luzerner Zeitung online, December 11, 2017.
  16. ↑ Foehn storm becomes a danger in Vorarlberg. in: Vorarlberg online (vol.at), December 11, 2017;
    Storm triggers 100 fire brigade operations. vorarlberg.ORF.at, December 11, 2017.
  17. ↑ Cleaning up after the foehn storm. salzburg.ORF.at, December 12, 2017.
  18. ↑ Fire brigade moved out to 91 storm operations. nö.ORF.at, December 12, 2017.