AAVSO Sudden Ionospheric Disturbance Report June 2025 Observers: A112 A118 A119 A136 A138 A141 A148 A150 A152 A153 A154 A96 A97 YYMMDD Event Peak Importance 250601 1443 2 250601 1623 1 250602 1112 2 250602 1120 2+ 250602 1457 1 A148 - XRA 250602 2100 2 250602 2140 1+ 250603 0611 1+ A152 - XRA 250603 1135 1 A97 - XRA 250603 1258 2 250603 1304 2+ 250604 2327 2 A148 - XRA 250605 1348 1 250605 1546 2 250605 1657 2+ A152 - QUAL 250606 1053 1+ A97 - XRA 250606 1702 1+ 250606 1936 1- A97 - XRA 250607 1224 2 250610 1052 1+ 250611 0849 1+ A118 - XRA 250611 1536 2 250611 1550 1+ 250611 1912 1 250611 2039 1+ A148 - XRA 250611 2251 1 A148 - XRA 250612 1749 1+ 250612 2342 2 A148 - XRA 250613 1400 2 250613 1659 2 A152 - XRA 250613 1934 1- A148 - XRA 250613 2109 2 250614 0856 1+ 250614 1454 2 A148 - XRA 250614 1500 2+ A118 - XRA 250614 1712 1 250614 1804 1+ 250614 1905 2 A148 - XRA 250614 2136 2+ 250614 2300 2 250615 0756 2+ 250615 1045 2 250615 1212 1- A136 - XRA 250615 1243 2+ A150 - XRA 250615 1317 1 250615 1418 1- A97 - XRA 250615 1711 2 250615 1728 2+ A150 - XRA 250615 1802 2+ 250615 1809 2+ 250615 1918 2+ A150 - XRA 250615 1950 1 250615 2038 1 250615 2351 1- A148 - XRA 250616 0423 2 A152 - XRA 250616 0429 2+ A152 - XRA 250616 0640 2 250616 0830 1 A152 - XRA 250616 0930 1- A136 - XRA 250616 0937 2 250616 1139 2 250616 1452 2+ 250616 1710 1+ 250616 2311 1 A148 - XRA 250617 0623 1+ 250617 0938 3+ A119 - QUAL 250617 1138 2+ A119 - QUAL 250617 1334 2+ A136 - FLA 250617 1455 2+ A119 - QUAL 250617 2149 1+ 250617 2224 2 A141 - QUAL 250618 0930 2+ 250618 1131 2 250618 1234 1 250618 1545 1 250618 1617 1 250618 2140 1 250618 2317 1- A148 - XRA 250619 0651 1 250619 0726 2+ 250619 0827 1- A136 - XRA 250619 0917 2+ 250619 0924 2 250619 1927 2 250619 2136 2 250619 2351 1- A148 - XRA 250620 1258 1- 250620 1505 1- 250620 1737 2 250620 1743 2 250622 1145 2+ A152 - QUAL 250622 1743 1- A97 - XRA 250622 1842 1 A148 - XRA 250622 2144 1+ A148 - XRA 250623 1224 2+ 250623 1228 2+ 250624 1545 2 250624 1553 2 250626 1523 3 A152 - QUAL 250626 1523 3 A152 - QUAL 250628 1956 1+ 250628 1956 1+ ************************************************** Importance Summary - Jun 2025 1- events: 12 1 events: 18 1+ events: 17 2 events: 30 2+ events: 22 3 events: 2 3+ events: 1 ------------------ Total events: 102