Recent Scintillation Events
The following is a list of recent periods of high and sustained ionospheric scintillation as detected in the ASWFC scintillation monitor network. Note that these are auto-detected and not manually quality controlled.
ASWFC provides a free email alert service which notifies subscribers of scintillation events as they occur. To subscribe to this service, please visit the Ionospheric Scintillation alert page.
To see the raw data for these events in more detail, please look up the relevant locations and times at the World Data Centre ionospheric scintillation page.
Please contact ASWFC if you have any questions about these events or have any feedback regarding ionospheric scintillation services.
(last updated 31 Aug 2026 14:25 UT)
Approximate Start of disturbance : 15:31UT 28 Aug 2026 Approximate Peak of disturbance : 15:44UT 28 Aug 2026 Approximate End of disturbance : 15:47UT 28 Aug 2026 Maximum S4 Index : 0.816240 Eightieth percentile of S4 during disturbance : 0.793870 Observed at Sites : Darwin View Details at the WDC Approximate Start of disturbance : 08:59UT 28 Aug 2026 Approximate Peak of disturbance : 09:05UT 28 Aug 2026 Approximate End of disturbance : 09:23UT 28 Aug 2026 Maximum S4 Index : 0.848360 Eightieth percentile of S4 during disturbance : 0.755480 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 08:11UT 25 Aug 2026 Approximate Peak of disturbance : 08:17UT 25 Aug 2026 Approximate End of disturbance : 08:30UT 25 Aug 2026 Maximum S4 Index : 0.933040 Eightieth percentile of S4 during disturbance : 0.866540 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 07:00UT 14 Aug 2026 Approximate Peak of disturbance : 07:04UT 14 Aug 2026 Approximate End of disturbance : 07:20UT 14 Aug 2026 Maximum S4 Index : 0.677700 Eightieth percentile of S4 during disturbance : 0.586010 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 09:11UT 03 Jul 2026 Approximate Peak of disturbance : 09:16UT 03 Jul 2026 Approximate End of disturbance : 09:30UT 03 Jul 2026 Maximum S4 Index : 0.676350 Eightieth percentile of S4 during disturbance : 0.584800 Observed at Sites : Niue View Details at the WDC
