WU weather map

I have noticed the cloud cover on the WWL weather map from WU is only available for 6 hours per day on South Island of NZ usually between 11:00 and 17:00 daily, at other times the map is blank as per screenshot. Is this due to satellite pass over from which WU gathers its data?

Just to add to this, on visiting WU website for my location, under satellite settings is the provision to use IR4 which is for entire day, or VIS for daylight only. Are you able to alter your settings?

Those questions would best be answered by Weather Underground.

You do have the option to change that map image. Click “Settings” at the bottom of the main Weather Watcher Live window and enter the link to any map image in the “Map Image Link” box. After changing that setting, you’ll need to click refresh button at the top, left of the main Weather Watcher Live window to update that image.