Heat wave: very rare, 0°C at an altitude of more than 5000m... This temperature has not been measured at such a high altitude in Switzerland.

Heat wave: very rare, 0°C at an altitude of more than 5000m… This temperature has not been measured at such a high altitude in Switzerland.

Meteorologists said, today, Monday, that a limit of 0 degrees Celsius was recorded at an altitude much higher than the highest Swiss mountain.

Switzerland is not immune to a heat wave. Worse, the all-European episode blew a 27-year record among our Swiss neighbours.

Between Sunday and Monday, the temperature reached zero and even exceeded 5,000 metres. The Federal Meteorological Office said in a tweet, that a record was measured at an altitude of 5,184 meters above sea level. The 0°C limit has not been measured at such a high altitude in Switzerland as during the night from Sunday to Monday.

The 0 °C isotherm was measured on the radio probe in Bordeaux at an altitude of more than 5,000 m, that is, above the summit of Mont Blanc.
The extremely hot, high-altitude air mass identified by the radio probe over the Alps will be tomorrow in the early part of the day. # heat wave #vague de chaleur https://t.co/rsNcHASr2u

– MeteoSwiss (@meteosuisse) 24 July 2022

The old record, 5177 metres, is dated July 20, 1995. It is very rare, even abnormal, that the 0°C limit exceeds 5000 metres.

As announced yesterday, a #register The absolute temperature of 0°C last night could have been reached with a value of 5,184 meters recorded by the Byern voice in the middle of the night, higher than the previous record of 5,117 meters on July 20, 1995! To be confirmed tomorrow. pic.twitter.com/fY2R71i8cM

– MeteoSwiss (@meteosuisse) 25 July 2022

The previous record was measured on July 20, 1995 at an altitude of 5,117 m. Meteorologists determine the zero-degree limit using weather balloons.

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