AAVSO Sudden Ionospheric Disturbance Report April 2016 Observers: A118 A119 A122 A125 A131 A134 A136 A138 A141 A142 A143 A146 A147 A94 A96 A97 YYMMDD Event Peak Importance 160402 1803 3 A147 - QUAL 160402 1807 3 A147 - QUAL 160406 1007 2 160406 1648 1+ 160406 1652 1+ 160407 0119 1- A134 - XRA 160407 0554 1- 160407 0950 1- A96 - XRA 160407 1113 1+ 160407 1114 1- A141 - XRA 160407 1338 1- 160408 1611 1 A146 - XRA 160408 1614 1- A146 - XRA 160408 1638 1 160408 1643 2 160409 0527 1 160409 1040 1- 160409 1310 3 A118 - QUAL 160409 1328 3 160409 1613 1- 160409 1713 1- A146 - FLA 160409 1758 1+ 160409 1846 1- A97 - XRA 160409 1901 2 A147 - QUAL 160409 2036 1+ A147 - XRA 160410 1521 2 A125 - FLA 160411 1837 1- A141 - XRA 160411 2030 1- A141 - XRA 160411 2030 1- A141 - XRA 160412 0751 1+ 160413 1149 2+ 160414 1331 1+ 160414 1447 1- A141 - XRA 160414 1809 1+ 160415 1346 1+ A147 - FLA 160415 1430 2 160415 1433 2+ A147 - XRA 160416 1437 1 160416 1514 2 A125 - FLA 160416 1610 2 A118 - QUAL 160416 1921 1- 160416 1958 2+ 160417 1729 1+ 160417 1732 2+ A147 - XRA 160418 0021 2+ A138 - XRA 160418 0044 2+ A94 - XRA 160418 1238 1 A125 - XRA 160418 1238 1 A125 - XRA 160424 1633 2+ A141 - QUAL 160425 0820 1- 160426 1150 2+ 160426 1332 1- 160427 1327 1- A141 - XRA 160428 0348 1- A122 - XRA 160428 0602 1- 160428 0621 1+ A122 - QUAL 160428 0852 1 160428 1252 1+ 160429 1556 2 A147 - FLA 160429 1640 1 A147 - QUAL 160429 1641 2+ A147 - QUAL 160429 2143 1- A147 - QUAL 160429 2143 1- A147 - QUAL 160429 2225 1- A147 - QUAL 160430 1253 2+ A147 - QUAL 160430 2005 3+ A147 - QUAL 160430 2005 3+ A147 - QUAL ************************************************** Importance Summary - Apr 2016 1- events: 23 1 events: 8 1+ events: 12 2 events: 8 2+ events: 10 3 events: 4 3+ events: 2 ------------------ Total events: 67