AAVSO Sudden Ionospheric Disturbance Report April 2014 Observers: A118 A120 A122 A125 A129 A131 A134 A136 A137 A139 A142 A143 A94 A96 A97 YYMMDD Event Peak Importance 140401 0052 1 A120 - XRA 140401 1941 1 A94 - XRA 140401 2033 1 A94 - XRA 140401 2159 1+ A125 - QUAL 140401 2231 2 140402 0603 1- 140402 0612 1+ 140402 0625 1- 140402 1010 1- 140402 1224 1- 140402 1333 2 140402 1346 2+ 140402 1354 3 140402 1402 2 140402 1614 2+ A125 - QUAL 140403 0414 2+ A122 - XRA 140403 0424 2+ A120 - XRA 140403 1016 1 140403 1026 2 A131 - XRA 140403 1521 1- 140403 1844 1 A125 - QUAL 140403 1850 1+ A125 - QUAL 140404 0350 1+ 140404 1117 1- A96 - XRA 140404 1347 2 140404 1455 1+ 140404 1552 1- A118 - QUAL 140404 1657 1+ A125 - QUAL 140404 1710 1 A125 - QUAL 140404 2237 1- A125 - QUAL 140405 0958 1 140405 1050 1+ 140405 1836 1 A125 - XRA 140405 1852 2 A125 - QUAL 140406 0536 1- A120 - QUAL 140406 0558 1- A120 - XRA 140406 2049 1 140406 2104 1 140407 0234 1- A120 - QUAL 140407 0629 1- 140407 1334 2 140409 1851 3 A94 - XRA 140410 0151 2 140410 0355 2+ 140410 1800 2+ A118 - QUAL 140410 1817 2 140411 0931 1- 140411 1123 1 140411 1131 1 140411 1456 2+ 140411 1503 2+ A97 - XRA 140412 0725 2 140412 0934 1 A143 - QUAL 140412 1127 2+ 140412 1501 2+ 140413 1220 2 A96 - QUAL 140413 2020 2 A94 - XRA 140413 2311 1+ A125 - XRA 140413 2351 1- 140414 0442 1- 140414 0757 2+ 140414 0809 2 140414 0900 1- 140414 0914 1- 140414 1229 1 140415 0323 1+ 140415 0647 1- 140415 0803 1+ 140415 0922 1+ 140415 0959 1+ 140415 1247 1 140415 1328 1- 140415 1759 1 140416 0123 1- 140416 0201 1 140416 0309 2 140416 0508 2 A122 - XRA 140416 0723 1- 140416 0818 1- 140416 0844 1+ 140416 1250 1 140416 1735 1 140416 1959 2 140417 0010 2 A137 - XRA 140417 0412 1+ A134 - QUAL 140417 0609 1- A131 - XRA 140417 1008 1 A137 - XRA 140417 1017 2+ A120 - XRA 140417 1152 1+ 140417 1204 2+ 140417 1600 1 A143 - QUAL 140417 1631 1 140418 0717 1+ A137 - XRA 140418 0812 1+ 140418 1247 2 140418 1257 2 140418 1305 2+ 140418 1326 3 140418 1816 2 A125 - QUAL 140418 1931 1 A118 - QUAL 140418 1931 1 A118 - QUAL 140419 0321 1- A120 - XRA 140419 0329 2 A134 - XRA 140419 0600 2 140419 1234 1- A96 - XRA 140419 1256 1- A137 - XRA 140419 1720 1- A94 - XRA 140419 1933 1 140419 2339 1 A137 - XRA 140420 0429 1- 140420 0815 1 140420 0827 1+ 140420 1141 1 A118 - XRA 140420 1207 2 A118 - XRA 140420 1208 2 140420 1341 1 140420 1451 1 A96 - XRA 140421 1943 1+ A125 - FLA 140421 2000 2+ A137 - XRA 140422 0526 2+ A120 - QUAL 140422 0544 2 140422 0805 1- 140422 0850 1 140422 0939 1- 140422 1121 1- A139 - FLA 140422 1138 2 140422 1517 1+ 140423 0110 2+ A137 - XRA 140423 0843 1 140423 1215 1 140423 1257 2+ 140423 1307 2 140423 1516 1+ 140424 1015 1+ 140424 1020 1+ 140424 2204 1+ A137 - XRA 140425 0024 1+ 140425 1201 2 140425 1209 2 140425 1329 2 140425 1615 2+ A125 - QUAL 140425 2038 2 A125 - QUAL 140426 1458 1+ 140426 1529 2 140426 2348 3 A134 - QUAL 140427 1526 2+ 140428 1231 2 A96 - XRA 140428 1525 2 140430 0621 1- A131 - XRA 140430 1830 1+ A125 - QUAL ************************************************** Importance Summary - Apr 2014 1- events: 32 1 events: 33 1+ events: 27 2 events: 34 2+ events: 20 3 events: 4 3+ events: 0 ------------------ Total events: 150