Hi @FranciscoMateus, this is a test pattern of the radar. You can read more on this here: https://community.windy.com/topic/13493/what-is-this/6?_=1600681067491 'Strange' behavior of the radar: https://www.weather.gov/jetstream/radarfaq#everything https://www.radartutorial.eu/15.weather/wx21.en.html

@vsinceac I took a quick look at Iranian wx. radars http://radar.irimo.ir/ It seems that radar images need some adjustments.

A video from NASA, on 50th Anniversary of TIROS-1 ..... an RCA film for NASA and TIROS-1 mission profile

@TZ You are right, this is obvious when latitude-longitude grid is shown (see Settings). The reflection of the sun moves a little more north each day and will disappear before reappearing around September 20 at the time of the equinox.

@liamc-dickson For your PhD research ... https://weather.us/

@Rameshlagariya Unfortunatelly you are in the borderline of 2 satellites coverage.