AAVSO Sudden Ionospheric Disturbance Report March 2023 Observers: A118 A119 A122 A131 A138 A141 A146 A148 A150 A152 A153 A96 YYMMDD Event Peak Importance 230301 1440 2+ A152 - QUAL 230302 1030 1- 230302 1041 1- 230302 1146 1+ 230302 1210 1- 230302 2115 1+ 230302 2149 2 A141 - QUAL 230302 2149 2 A141 - QUAL 230303 0709 1 A152 - XRA 230303 1022 2 230303 1030 3 230303 1431 1- 230303 1501 2 230303 1752 2 230303 1754 3 230303 1814 3 A148 - QUAL 230304 0823 1 230304 1201 1- A118 - XRA 230304 1316 1- 230304 1326 1- 230304 1342 1+ 230304 1440 1- 230304 1506 1 230304 1542 2+ 230304 1549 2+ 230304 2034 2 230305 1133 1- 230305 1305 1 A131 - QUAL 230305 1335 2 230305 1641 1+ 230305 1933 1- 230305 2135 1+ 230306 0123 3+ A122 - XRA 230306 0910 2 230306 1216 1+ 230306 1423 1- 230306 1441 1- 230306 1746 2+ 230307 1746 1- A146 - XRA 230308 1009 2+ 230308 1342 1 230308 1920 1- A146 - QUAL 230308 1944 2 A148 - XRA 230308 2245 1+ 230309 1006 1- A152 - XRA 230309 1006 1- A152 - XRA 230309 1459 1- A148 - XRA 230309 1830 1- A146 - XRA 230309 2024 1+ 230310 0707 1+ A131 - XRA 230310 1006 1- 230310 1024 1- A131 - XRA 230313 1100 2 A118 - XRA 230313 1100 2 A118 - XRA 230314 0605 2+ A122 - XRA 230315 0100 2+ A122 - QUAL 230315 2236 2+ A153 - QUAL 230316 1256 1- A96 - XRA 230317 0627 1 A131 - XRA 230317 0653 1 A131 - XRA 230317 1235 1+ 230317 1317 2+ 230317 1507 1 230318 0717 1- 230319 1116 1 A150 - QUAL 230319 1709 1- A153 - XRA 230319 1809 1+ 230319 1907 1- 230320 0146 3+ A122 - XRA 230320 0937 1 230321 1354 1- 230322 1942 2 230326 1712 3 A150 - XRA 230326 1712 3 A150 - XRA 230327 0636 1 A131 - XRA 230327 0736 1- A131 - XRA 230327 1055 2 230327 2028 2+ A141 - XRA 230328 1905 2 230329 1405 2 230329 1611 1 230329 1625 2+ 230329 2348 1 A148 - XRA 230330 0735 2+ 230331 0909 1- 230331 0909 1- 230331 2056 2 230331 2058 2+ ************************************************** Importance Summary - Mar 2023 1- events: 28 1 events: 13 1+ events: 11 2 events: 16 2+ events: 13 3 events: 5 3+ events: 2 ------------------ Total events: 88