AAVSO Sudden Ionospheric Disturbance Report November 1998 Observers: A-40 A-50 A-52 A-62 A-63 A-72 A-80 A-81 A-82 A-84 A-87 A-90 A-91 YYMMDD Event Peak (UT) Importance 981103 1925 2+ 981104 0406 1- 981104 0719 1+ 981104 0905 1 981104 1045 1- 981104 1550 1 981105 0455 1+ 981105 0610 1 981105 0806 1 981105 1336 2 981105 1824 2+ 981105 1946 2+ 981105 2215 1 981106 0445 1 981106 0710 1 981106 0755 1 981106 0835 1- 981106 0849 1- 981106 0911 1 981106 1110 1 981106 1204 1 981106 1440 2+ 981106 1510 2 981106 1850 1- 981106 1958 1 981106 2211 2 981107 0945 1 981107 1106 1+ 981107 1450 1- 981107 1759 2+ 981108 1110 2 981108 1547 2+ 981108 1710 2+ 981108 2006 2 981108 2257 2+ 981109 2116 1+ 981110 0655 1 981110 1332 1- 981110 1532 1- 981110 1544 2 981110 1730 1 981110 1755 1 981110 1822 2+ 981110 2051 2+ 981111 0408 2 981111 0455 1+ 981111 0648 1 981111 0712 1 981111 0740 1 981111 0956 1+ 981111 1018 1+ 981111 1205 1- 981112 0531 1+ 981112 1135 3 981112 1520 1- 981112 2150 1+ 981113 2120 2 981114 1430 2 981115 1315 2+ 981116 1205 1 981116 1610 2+ 981116 2014 2 981116 2156 2+ 981116 2318 2 981118 1055 1 981120 1524 1+ 981121 0640 1 981121 1135 1 981121 1618 1+ 981122 0640 2+ 981122 1010 1 981122 1229 2+ 981122 1305 2+ 981122 1427 1 981122 1445 1 981122 1625 3 981122 1836 2+ 981122 2210 2+ 981123 0639 2 981123 1038 1 981123 1112 2 981124 0216 2+ 981124 0850 1+ 981124 1030 1- 981124 1240 1- 981124 2216 2 981125 0600 1+ 981125 1325 1- 981125 1404 1+ 981125 2102 2+ 981126 1038 1 981126 1330 1 981126 1730 2+ 981127 0738 2+ 981127 1059 1 981127 1547 2 981127 1827 1- 981128 0545 3 981128 1530 1+ 981128 1727 2+ 981128 1818 1+ 981129 0545 2 981129 0639 1 981129 1130 1- 981130 1017 1- ******************************************* Importance Summary November 1998 1- events: 16 1 events: 31 1+ events: 16 2 events: 16 2+ events: 23 3 events: 3 3+ events: 0 Total events: 105