AAVSO Sudden Ionospheric Disturbance Report June 1988 Observers: A-01 A-03 A-09 A-19 A-26 A-46 A-49 A-50 A-59 YYMMDD Event Peak (UT) Importance 880601 1607 2 880602 1345 1+ 880602 1600 1 880602 1813 2+ 880603 1925 1+ 880604 1553 1+ 880605 1835 2+ 880605 2012 2+ 880607 1430 2 880608 1635 1 880609 1705 2+ 880611 1443 1+ 880615 2241 2+ 880616 1321 2+ 880621 1322 1+ 880621 2338 1 880622 1418 1- 880622 1640 1- 880622 1648 2 880622 2241 2+ 880623 1318 1- 880623 1751 2+ 880623 1917 2 880624 1235 2 880624 1352 1- 880624 1408 2 880624 1605 2 880624 1645 2+ 880624 1834 1+ 880624 1920 1+ 880624 2125 2+ 880625 1115 1 880625 1146 1 880625 1251 2 880625 1503 2+ 880625 1640 2 880625 2002 2 880626 1102 1- 880626 1242 2 880626 1350 2 880627 1443 2 880627 1618 1- 880627 1821 1+ 880627 1954 1+ 880627 2303 1 880628 1115 1- 880628 1122 2+ 880628 1327 1+ 880628 1359 1 880628 1526 1 880628 1701 1- 880628 1702 1 880628 1727 2 880628 1922 1+ 880628 2001 2+ 880628 2134 1+ 880628 2230 1+ 880629 1117 1- 880629 1236 1+ 880629 1330 1 880629 1421 1 880629 1536 2 880629 1651 1+ 880629 1752 1 880629 1822 1+ 880629 2016 2+ 880630 1251 2+ 880630 1441 2 880630 1539 2 880630 1633 1 880630 1727 2 ******************************************* Importance Summary June 1988 1- events: 9 1 events: 13 1+ events: 16 2 events: 18 2+ events: 15 3 events: 0 3+ events: 0 Total events: 71