If you're in Dublin today, you may have spotted some interesting objects in the sky.
Not only has the sun made an appearance (hallelujah!) but there have also been some cool-looking cloud formations dotting the blue.
This photo was sent into us by Graham Geraghty who writes that "it’s a great example of altocumulus lenticularis aka flying saucer cloud".
As well as being fun to say ('len-tic-ul-lar'), lenticular clouds are quite rare, forming only when weather conditions are just right.
Some of the lenticular clouds around Dublin are amazing #independenceday pic.twitter.com/aRN4FJV6Uc /via @joeyGartlan
— Irish Weather News (@iWeatherNews) June 30, 2015
@98FM @MetEireann @AAWeatherWatch Atomic clouds over Dublin !! pic.twitter.com/5Yv3f6HzNm
— 💃🏼Gráinne O’Hagan💃🏼 (@gra5105) June 30, 2015
Earthsky.org gives this explanation for how the clouds are formed:
"These lens-shaped clouds typically form where stable moist air flows over a mountain or a range of mountains. When this happens, a series of large-scale standing waves may form on the mountain’s downwind side. If the temperature at the crest of the wave drops to the dew point, moisture in the air may condense to form lenticular clouds."
But, to be honest, it’s most likely aliens.