AAVSO Sudden Ionospheric Disturbance Report June 2021 Observers: A118 A119 A122 A146 A148 A152 A96 A97 YYMMDD Event Peak Importance 210601 0427 1- A122 - XRA 210604 1608 1- A146 - XRA 210606 1909 1- A148 - XRA 210608 1053 1+ 210608 1726 1 210609 0859 2+ 210609 0904 2+ 210609 1200 2+ 210610 0643 2 A119 - XRA 210610 0651 1+ A119 - XRA 210623 0705 2 210625 1405 1 210625 1908 1- A146 - XRA 210627 2008 1- A146 - XRA 210627 2141 1- A146 - XRA 210628 0932 1+ A152 - XRA 210628 0933 2 210628 0940 2 A152 - XRA 210628 0940 2 A152 - XRA 210630 1818 1 ************************************************** Importance Summary - Jun 2021 1- events: 6 1 events: 3 1+ events: 3 2 events: 5 2+ events: 3 3 events: 0 3+ events: 0 ------------------ Total events: 20