The map above is auto-refreshed every minute or so. It’s generated by the application LiveMUF by Dave Edwards, G7RAU. This application is available to licenced radio amateurs to produce their own propagation maps.
Coloured lines indicate sporadic-E propagation reported in the following frequency bands during the last 30 minute period:
Blue lines = 28 MHz
Yellow lines = 50 MHz
Orange lines = 70 MHz
Red lines = 144 MHz
No-lines visible = No propagation reported
White parallel lines crossing the map = day/night terminator
Yellow star = Sub-solar point
The data block in the bottom left corner includes the date and the start/end times for the 30 minute period of the current map in UTC.