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 Apr 2026 08:25 UT)
Approximate Start of disturbance : 09:41UT 31 Mar 2026 Approximate Peak of disturbance : 09:51UT 31 Mar 2026 Approximate End of disturbance : 09:56UT 31 Mar 2026 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.999000 Observed at Sites : Niue View Details at the WDC Approximate Start of disturbance : 11:30UT 27 Mar 2026 Approximate Peak of disturbance : 11:45UT 27 Mar 2026 Approximate End of disturbance : 11:55UT 27 Mar 2026 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.970535 Observed at Sites : Darwin View Details at the WDC Approximate Start of disturbance : 13:24UT 26 Mar 2026 Approximate Peak of disturbance : 13:29UT 26 Mar 2026 Approximate End of disturbance : 13:40UT 26 Mar 2026 Maximum S4 Index : 0.679880 Eightieth percentile of S4 during disturbance : 0.603100 Observed at Sites : Weipa View Details at the WDC Approximate Start of disturbance : 11:02UT 22 Mar 2026 Approximate Peak of disturbance : 11:43UT 22 Mar 2026 Approximate End of disturbance : 12:46UT 22 Mar 2026 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.713187 Observed at Sites : Darwin Weipa View Details at the WDC Approximate Start of disturbance : 07:22UT 19 Mar 2026 Approximate Peak of disturbance : 07:35UT 19 Mar 2026 Approximate End of disturbance : 07:59UT 19 Mar 2026 Maximum S4 Index : 1.00000 Eightieth percentile of S4 during disturbance : 0.951920 Observed at Sites : Niue View Details at the WDC
