AAVSO Sudden Ionospheric Disturbance Report December 2024 Observers: A112 A118 A119 A131 A136 A138 A141 A148 A150 A152 A153 A157 A96 A97 YYMMDD Event Peak Importance 241201 0749 1- A152 - XRA 241201 1622 1+ 241202 1635 1 A148 - XRA 241203 1417 1- A97 - XRA 241203 1823 1- 241204 1001 1+ 241204 1144 1- A136 - XRA 241204 1338 2+ A150 - QUAL 241204 2042 2 241204 2105 1 241204 2105 1 241204 2142 1- A153 - FLA 241204 4756 1 A97 - QUAL 241205 0819 1- 241205 1039 2 241205 1521 2 A97 - XRA 241205 1927 1- 241205 2113 1- 241205 2147 1- A148 - XRA 241205 2210 1- A153 - XRA 241206 0923 2 241206 1147 1 241206 1459 1- 241206 1505 1+ A148 - XRA 241206 1604 1 241206 1754 1- 241206 2115 1- A148 - XRA 241206 2255 1- A157 - XRA 241207 0749 1 A131 - XRA 241207 0900 1 241207 1030 1- 241207 1057 1+ 241207 1307 1+ 241207 1538 1 A97 - XRA 241207 1825 2 241207 2213 2+ 241207 2313 1 A153 - FLA 241208 0905 1+ 241208 1209 2 241208 1537 1 241208 1611 2 241208 1719 1+ 241209 1224 1 241209 1613 1- A148 - XRA 241209 1947 1 A148 - XRA 241209 1947 1 A148 - XRA 241210 1101 2 241210 1220 1- A131 - XRA 241210 1515 1- A150 - XRA 241210 1533 1- 241210 1620 1- 241210 1758 1+ 241210 1920 1- A148 - XRA 241210 2054 1 241210 2151 1- A153 - XRA 241210 2219 1- 241211 1007 1 241211 1122 1- 241211 1140 1- 241211 1430 1 A148 - XRA 241211 1547 2 241211 1729 1+ A148 - XRA 241211 1735 1 A97 - XRA 241212 1245 1- A118 - XRA 241212 1540 1+ 241212 1744 1+ 241212 1858 1- A148 - XRA 241212 2108 1 241213 1124 2 241213 1307 1 241213 1426 1- 241213 1640 1 241213 1720 1 241213 1937 1+ A148 - XRA 241213 2048 1 241214 1503 1+ A148 - XRA 241214 1730 2 241215 0939 2 241215 1108 1+ 241215 1731 1- A148 - XRA 241215 2025 1+ 241215 2054 1 241217 2019 1+ A138 - XRA 241217 2143 2 A157 - XRA 241218 2023 1- A148 - XRA 241219 0919 1 241219 1036 2 241219 1352 1 241219 1432 1- 241219 1509 1- 241219 1536 1 241219 1717 1+ 241219 1808 2 241219 1900 1+ 241220 0902 1 241220 1012 1 241220 1119 1+ 241220 1649 1- 241221 1526 1 A97 - QUAL 241221 2017 1- A148 - XRA 241221 2038 1- 241221 2136 2+ A153 - FLA 241221 2208 1 A157 - XRA 241222 1031 2 241222 1351 1- A118 - XRA 241222 1414 1+ 241222 1430 2+ A152 - QUAL 241222 1430 2+ A152 - QUAL 241222 1917 2 A141 - QUAL 241222 2050 1+ 241222 2126 2+ A148 - QUAL 241223 0634 2+ A136 - XRA 241223 1110 2 241224 0841 1 241224 0939 1 241224 1410 1 241224 1521 1+ 241224 1608 1+ A97 - XRA 241224 1635 2 241224 1827 1+ 241224 1937 1 241224 2028 2 241224 2128 1- A153 - FLA 241224 2232 1+ 241225 1531 1- A97 - QUAL 241225 1840 1 241225 1857 1- A148 - QUAL 241225 2049 1+ 241226 1850 2+ 241227 0803 1 A136 - XRA 241227 1234 1 241227 1538 1- 241227 1711 1 241227 1911 1 A97 - XRA 241227 2034 2 241228 0808 1 A136 - XRA 241228 1109 1- 241228 1120 1+ 241228 1519 1 241228 2215 1 A148 - XRA 241229 0717 1 241229 0800 2+ A136 - XRA 241229 0948 1- 241229 1038 2 241229 1223 1 241229 1256 1 241229 1345 2+ A141 - QUAL 241229 1507 2 241229 1605 2 A141 - QUAL 241229 1708 2 241229 1802 1 241229 1833 1 241229 1842 2 241229 2008 1- A148 - XRA 241229 2036 1 241229 2152 2+ A157 - XRA 241229 2205 2+ A148 - XRA 241230 0848 2+ 241230 1010 1 241230 1245 3+ A118 - QUAL 241230 1245 3+ A118 - QUAL 241230 1442 1+ 241230 1444 1+ 241230 1656 2 241230 1742 1+ 241230 1831 2 241230 2149 2+ A148 - XRA 241230 2247 1 A148 - XRA 241231 0910 1 241231 1617 1 A97 - XRA 241231 2144 3 241231 2245 3+ A138 - XRA 241231 2359 1 A157 - QUAL ************************************************** Importance Summary - Dec 2024 1- events: 43 1 events: 54 1+ events: 30 2 events: 28 2+ events: 14 3 events: 1 3+ events: 3 ------------------ Total events: 173