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Torrential rain swells Swiss rivers and lakes

Parts of Western Switzerland continued on Sunday to clear up debris from flash floods triggered by heavy rain over the weekend that swelled rivers and lakes well beyond their normal banks, disrupting transport and prompting the evacuation of residents in two communities.

Torrential rain swells Swiss rivers and lakes
Photo: Monthey municipal police

Around 300 people were temporarily evacuated from the municipalities of Monthey and Trois Torrents in the canton of Valais, because of the risk of landslides and high water, state broadcaster RTS reported on its website.

The Vièze River surged beyond its banks on Saturday but levels dropped the following day.

In Saint Gingolphe, a community in the Chablais region of Valais, the Vièze River inundated local streets leaving them strewn with rocks and debris, RTS said.

Two restaurants overlooking Lake Geneva in the community near the French border were heavily damaged.

In Geneva, the high level of the Arve River temporarily forced the closure of several bridges, including the Hans-Wildorf bridge and the Acacias bridge, used by the line 15 tram.

The level of the river, which flows into the Rhône, dropped on Sunday.

But officials warned that the Vessy and Val d’Arve bridges would remain closed on Monday, the Tribune de Genève reported.

“The torrential flooding of the Arve, Saturday, amounts to the most significant flow rate ever registered since 1935 (the date when monitoring equipment was first installed),” François Pasquni, director of the canton of Geneva’s ecology and water service told media.

See also: SWISS TRAIN PASSENGERS EVACUATED AFTER LANDSLIDE

Several buildings suffered flooding, including the Vernets skating rink, and two science buildings of the University of Geneva, the Tribune said.

Between midnight Friday and midday Sunday Western Switzerland received 70 to 110 percent of the rain it usually receives for the entire month of May, MeteoNews said.

No related deaths or injuries were reported.

Elsewhere in Switzerland, officials were bracing for flooding around Lake Thun, Lake Biel and Lake Neuchâtel, as well as along sections of the Rhone and Aare rivers expected to be hit by fresh rainfall overnight Sunday and early Monday. 

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WEATHER

IN PICTURES: ‘Exceptional’ Sahara dust cloud hits Europe

An "exceptional" dust cloud from the Sahara is choking parts of Europe, the continent's climate monitor said on Monday, causing poor air quality and coating windows and cars in grime.

IN PICTURES: 'Exceptional' Sahara dust cloud hits Europe

Copernicus Atmosphere Monitoring Service said the latest plume, the third of its kind in recent weeks, was bringing hazy conditions to southern Europe and would sweep northward as far as Scandinavia.

Mark Parrington, senior scientist at Copernicus, said the latest event was related to a weather pattern that has brought warmer weather to parts of Europe in recent days.

“While it is not unusual for Saharan dust plumes to reach Europe, there has been an increase in the intensity and frequency of such episodes in recent years, which could be potentially attributed to changes in atmospheric circulation patterns,” he said.

This latest episode has caused air quality to deteriorate in several countries, Copernicus said.

The European Union’s safe threshold for concentrations of PM10 — coarser particles like sand and dust that that can irritate the nose and throat — has already been exceeded in some locations.

A picture taken on April 8, 2024 shows a rapeseed field under thick sand dust blown in from the Sahara, giving the sky a yellowish appearance near Daillens, western Switzerland. – An “exceptional” dust cloud from the Sahara is choking parts of Europe, the continent’s climate monitor said, causing poor air quality and coating windows and cars in grime. (Photo by Fabrice COFFRINI / AFP)

The worst affected was the Iberian Peninsula in Spain but lesser air pollution spikes were also recorded in parts of Switzerland, France and Germany.

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Local authorities in southeastern and southern France announced that the air pollution threshold was breached on Saturday.

They advised residents to avoid intense physical activity, particularly those with heart or respiratory problems.

The dust outbreak was expected to reach Sweden, Finland and northwest Russia before ending on Tuesday with a shift in weather patterns, Copernicus said.

The Sahara emits between 60 and 200 million tonnes of fine dust every year, which can travel thousands of kilometres (miles), carried by winds and certain meteorological conditions.

The Spanish Canary Islands off the coast of northwest Africa saw just 12 days within a 90-day period from December to February where skies were free of Saharan dust, the local weather agency Aemet had reported.

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