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 08 Oct 2025 07:45 UT)
Approximate Start of disturbance : 07:17UT 29 Sep 2025 Approximate Peak of disturbance : 07:33UT 29 Sep 2025 Approximate End of disturbance : 11:30UT 29 Sep 2025 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.864995 Observed at Sites : Niue Weipa View Details at the WDC Approximate Start of disturbance : 07:46UT 27 Sep 2025 Approximate Peak of disturbance : 07:54UT 27 Sep 2025 Approximate End of disturbance : 08:13UT 27 Sep 2025 Maximum S4 Index : 0.917860 Eightieth percentile of S4 during disturbance : 0.745670 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 08:11UT 22 Sep 2025 Approximate Peak of disturbance : 08:28UT 22 Sep 2025 Approximate End of disturbance : 08:30UT 22 Sep 2025 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.770790 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 11:59UT 21 Sep 2025 Approximate Peak of disturbance : 12:16UT 21 Sep 2025 Approximate End of disturbance : 12:18UT 21 Sep 2025 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.963650 Observed at Sites : Darwin View Details at the WDC Approximate Start of disturbance : 07:56UT 07 Sep 2025 Approximate Peak of disturbance : 08:14UT 07 Sep 2025 Approximate End of disturbance : 08:20UT 07 Sep 2025 Maximum S4 Index : 0.796200 Eightieth percentile of S4 during disturbance : 0.693800 Observed at Sites : Niue View Details at the WDC
