Lightning activity for
Lightning stroke positions are shown as coloured dots which "cool down"
the most recent (occurring
within the last 10 min)
to red for
the oldest (30-40 minutes
Red asterisks in white circles are active WWLL lightning sensor
The terminator (day-night boundary) is shown, with the daylit
section of the globe in grey.
(also see WWLL map with superimposed cloud
viewed by satellite
(Thanks to National Weather Service/Aviation Weather Center for images of cloud