AAVSO Sudden Ionospheric Disturbance Report November 2025 Observers: A118 A119 A131 A136 A138 A141 A148 A150 A152 A153 A154 A96 YYMMDD Event Peak Importance 251101 0828 1- 251101 1654 1- 251102 1204 1+ A150 - QUAL 251102 1245 2 251103 0900 2+ A118 - QUAL 251103 0944 2+ A96 - QUAL 251103 1008 3+ 251103 1226 2 251103 1236 2+ 251103 1307 2+ A96 - QUAL 251103 1705 1 251103 1706 1+ 251104 1012 1- 251104 1727 2+ 251104 1754 2+ A148 - QUAL 251104 2016 1+ 251104 2153 1+ 251104 2202 1 251105 0930 1- A96 - XRA 251105 1057 3 A118 - FLA 251105 1113 2+ 251105 1225 2+ A118 - QUAL 251105 1429 1 251105 2051 2+ A148 - QUAL 251105 2205 1+ 251106 0656 1- A154 - XRA 251106 0902 1- 251106 1306 1- 251106 1316 1- 251106 1823 1- A150 - XRA 251106 2000 1 251107 0926 1- 251107 1327 1+ A96 - XRA 251107 1500 1- A96 - XRA 251107 1551 1 251107 1704 1 251107 1815 1- 251107 1958 1 251107 2018 1 A148 - QUAL 251108 0621 1+ A131 - XRA 251108 1258 1- 251109 0722 2+ 251109 0741 3+ A154 - XRA 251109 1841 2+ A138 - XRA 251110 0647 1- A96 - XRA 251110 0909 2+ 251110 0920 2+ 251110 1417 1 251110 1456 1- A96 - XRA 251110 1516 1- 251110 1813 2 A148 - XRA 251110 1909 1+ A148 - XRA 251110 1958 1+ 251111 0742 1 A118 - XRA 251111 0808 1+ 251111 0841 1- 251111 1003 3 251111 1216 2 A150 - QUAL 251111 1301 2 A150 - QUAL 251111 1501 1- A150 - FLA 251111 1518 1- A150 - QUAL 251111 1658 1- A150 - XRA 251112 2046 1- A148 - QUAL 251113 1328 1- 251114 0811 2 A152 - QUAL 251114 0828 2+ 251114 2012 1+ 251114 2106 1- A138 - XRA 251114 2133 1+ A138 - XRA 251115 1550 1+ A148 - QUAL 251115 1653 2 A148 - QUAL 251115 1717 3+ A148 - XRA 251115 1840 2 A148 - QUAL 251115 2252 1 A138 - XRA 251116 0812 1+ 251116 0822 2 251119 0946 2+ 251119 0953 2 251120 1005 1- A131 - XRA 251121 1319 1 A152 - XRA 251121 1331 1- A96 - XRA 251121 1954 2 A148 - XRA 251122 1146 1 251122 1901 1+ 251122 2155 2+ A148 - QUAL 251125 1823 2 A148 - QUAL 251128 0745 1- A131 - XRA 251128 1203 1 251128 1345 1- A131 - XRA 251128 1647 1- A150 - XRA 251128 1828 1- 251128 1858 1- A148 - XRA 251128 2008 1 A148 - QUAL 251129 0903 2 A131 - XRA 251129 0939 1 A131 - XRA 251129 1315 1 251129 1450 1- A131 - XRA 251129 1552 1+ A148 - XRA 251129 1552 1+ A148 - XRA 251129 1606 2+ A148 - XRA 251129 1948 1- A148 - QUAL 251129 1948 1- A148 - QUAL 251129 2013 1- 251129 2149 2 A148 - XRA 251129 2149 2 A148 - XRA 251130 1021 1- 251130 1054 1 251130 1055 1 251130 1255 2+ A118 - QUAL 251130 1255 2+ A118 - QUAL ************************************************** Importance Summary - Nov 2025 1- events: 35 1 events: 19 1+ events: 17 2 events: 15 2+ events: 19 3 events: 2 3+ events: 3 ------------------ Total events: 110