Not real storm bands

[SergiGrifol]

There are some storm bands that are not real. For instance in Barcelona - Spain, in the sea. Can it be fixed up?

[idefix37]

@SergiGrifol
This is probably due to interferences with WiFi equipment RLAN, which use the same frequency 5 GHz as the meteorological radars. See a similar problem in the Netherlands:
https://cept.org/Documents/fm-22/42471/fm22-18-info01_interference-meteorological-radar-netherlands

Not sure that Windy can fix it.

[Gkikas LGPZ]

@idefix37
Also, those spikes may refer to "non-weather targets" like:
Solid obstacles such as mountains or buildings,
Ground and sea clutter
Reflections from buildings if the radar is close enough to a city (called urban spikes).

Each of them has their own characteristics that make it possible to distinguish them to the trained eye but they may fool a layman.

Source: https://en.wikipedia.org/wiki/Weather_radar#Non-weather_targets

[annamariaslim]

@idefix37 those spikes are other radar users beams.

[Gkikas LGPZ]

Probably mountains in the north part of Mallorca and/or wifi antennas at location "A"
interfere with wx. radar and produce those non-weather targets (B).

wx. radar locatios: http://eumetnet.eu/wp-content/themes/aeron-child/observations-programme/current-activities/opera/database/OPERA_Database/index.html

[TomSlavkovsky]

@SergiGrifol this easy-to-read article explains the radar interference very nicely.

https://blog.metservice.com/Radar_Interference