AAVSO Sudden Ionospheric Disturbance Report September 1992 Observers: A-03 A-09 A-40 A-50 A-59 A-61 A-62 A-63 A-65 A-66 A-67 A-68 A-69 A-70 A-71 A-72 A-73 A-74 A-75 YYMMDD Event Peak (UT) Importance 920904 0032 1- 920904 1016 2 920904 1232 1- 920904 1414 1+ 920904 1443 1- 920904 1623 1+ 920904 1854 1 920905 0805 2 920905 1128 2 920905 1216 1 920905 1334 2 920905 1439 2 920905 1559 1 920905 1622 2 920905 1725 1- 920905 1814 1- 920905 1853 2 920905 2014 2 920905 2125 1 920906 0655 2+ 920906 0848 1- 920906 0905 2 920906 1047 1 920906 1200 2+ 920906 1311 2+ 920906 1516 2+ 920906 1644 1+ 920906 1713 2 920906 1833 1- 920906 1846 3 920906 2057 2+ 920907 0632 2+ 920907 0857 2 920907 1240 1+ 920907 1309 2+ 920907 1431 1 920907 1503 1- 920907 1728 1+ 920907 1850 1+ 920907 1936 2+ 920907 2112 1+ 920907 2302 1+ 920908 0837 2 920908 1208 2 920908 1655 2 920908 1930 2 920909 1056 1 920909 1140 1+ 920909 1438 1- 920909 1529 1 920909 1801 2+ 920909 2101 1 920910 1035 1 920910 1815 1 920910 1938 1- 920910 1954 1 920910 2255 2+ 920911 0809 2 920912 1322 1 920912 1540 2 920913 1020 2 920914 1649 1- 920916 1017 2 920916 1349 1- 920916 1454 1+ 920916 2009 1+ 920916 2114 2 920916 2338 1+ 920917 0731 1+ 920917 0848 2+ 920917 1009 1 920917 1120 1+ 920917 1300 2 920917 1342 1+ 920917 1516 2 920917 1700 1 920917 1721 1+ 920917 1838 2 920917 1920 1+ 920917 2048 2 920919 1120 1 920920 1408 1+ 920921 1102 1- 920925 1618 1- 920927 0937 1- 920927 2025 1 ******************************************* Importance Summary September 1992 1- events: 15 1 events: 17 1+ events: 18 2 events: 24 2+ events: 11 3 events: 1 3+ events: 0 Total events: 86