Adding cold (blue), warm (red) and dry (yellow) main flow of air around a mid-latitude low pressure systems, called conveyor belts, on a satellite picture of the clouds. Here it is with Storm Anatol of 1999.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Anatol_NOAA_polar_IR_3.jpg" title="File:Anatol NOAA polar IR 3.jpg">Anatol NOAA polar IR 3.jpg</a>: NOAA *derivative work: <a href="//commons.wikimedia.org/wiki/User:Pierre_cb" title="User:Pierre cb">Pierre cb</a></li></ul>
2016-11-28
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Anatol_NOAA_polar_IR_3.jpg" title="File:Anatol NOAA polar IR 3.jpg">Anatol NOAA polar IR 3.jpg</a>: <a href="//commons.wikimedia.org/wiki/File:Anatol_NOAA_polar_IR_3.jpg" class="image"><img alt="Anatol NOAA polar IR 3.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Anatol_NOAA_polar_IR_3.jpg/50px-Anatol_NOAA_polar_IR_3.jpg" decoding="async" width="50" height="69" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Anatol_NOAA_polar_IR_3.jpg/75px-Anatol_NOAA_polar_IR_3.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Anatol_NOAA_polar_IR_3.jpg/100px-Anatol_NOAA_polar_IR_3.jpg 2x" data-file-width="387" data-file-height="533"></a><br>