Di: RSI Info
Venerdì pomeriggio chi si trovava all’aria aperta è finito con gli occhi all’insù e magari con la bocca spalancata per lo stupore: il cielo al Sud delle Alpi si è dipinto di colori arcobaleno grazie a delle bellissime nubi iridescenti, formate da piccoli cristalli di ghiaccio, probabilmente a una quota di 9-10 km.
Il tramonto sopra Lugano
Secondo quanto spiegatoci da MeteoSvizzera, la presenza di queste nuvole non è rara alle nostre latitudini, ma l’effetto ottico odierno è stato esaltato dalle condizioni di forte vento. Uno spettacolo che si è potuto ammirare da tutto il Ticino, come testimoniano le foto giunte alla redazione meteo e dai nostri lettori.
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