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 10 Jun 2026 21:15 UT)
Approximate Start of disturbance : 07:56UT 03 Jun 2026 Approximate Peak of disturbance : 08:08UT 03 Jun 2026 Approximate End of disturbance : 08:17UT 03 Jun 2026 Maximum S4 Index : 0.926830 Eightieth percentile of S4 during disturbance : 0.729480 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 16:58UT 29 May 2026 Approximate Peak of disturbance : 16:58UT 29 May 2026 Approximate End of disturbance : 17:13UT 29 May 2026 Maximum S4 Index : 0.601150 Eightieth percentile of S4 during disturbance : 0.601150 Observed at Sites : Weipa View Details at the WDC Approximate Start of disturbance : 09:07UT 28 May 2026 Approximate Peak of disturbance : 09:21UT 28 May 2026 Approximate End of disturbance : 09:25UT 28 May 2026 Maximum S4 Index : 0.780310 Eightieth percentile of S4 during disturbance : 0.585330 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 13:38UT 28 Apr 2026 Approximate Peak of disturbance : 15:01UT 28 Apr 2026 Approximate End of disturbance : 15:10UT 28 Apr 2026 Maximum S4 Index : 0.982520 Eightieth percentile of S4 during disturbance : 0.719325 Observed at Sites : Darwin View Details at the WDC Approximate Start of disturbance : 08:11UT 20 Apr 2026 Approximate Peak of disturbance : 08:11UT 20 Apr 2026 Approximate End of disturbance : 08:29UT 20 Apr 2026 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.962510 Observed at Sites : Niue View Details at the WDC
