AAVSO Sudden Ionospheric Disturbance Report February 1992 Observers: A-03 A-09 A-40 A-50 A-52 A-59 A-61 A-62 A-63 A-64 A-65 A-66 A-67 A-68 A-69 A-70 A-71 A-72 A-73 A-74 YYMMDD Event Peak (UT) Importance 920201 0944 1- 920201 1549 1 920201 1857 1 920201 2023 1 920201 2051 1+ 920202 0122 2 920202 0830 1 920202 0912 2+ 920202 1135 1 920202 1156 1 920202 1401 1+ 920202 1515 2 920202 1615 1 920202 1702 1- 920202 1730 1- 920202 1823 1 920202 1857 1 920202 1946 1 920202 2056 1- 920202 2117 1 920202 2246 1- 920202 2320 1- 920203 0049 1 920203 1012 1+ 920203 1135 2 920203 1233 1- 920203 1308 1- 920203 1326 1 920203 1345 1 920203 1419 2 920203 1549 1- 920203 1617 1+ 920203 1636 1- 920203 1652 1- 920203 1823 2 920203 2015 1- 920203 2030 2+ 920204 0752 1 920204 1602 1+ 920204 1936 2 920204 2035 1- 920204 2145 1- 920204 2325 2 920205 0644 1+ 920205 0948 1+ 920205 1318 1+ 920205 1459 1- 920205 1633 1 920205 1915 1 920205 2023 2 920206 0019 1 920206 0715 1- 920206 0759 1- 920206 1016 2+ 920206 1118 1- 920206 1315 1 920206 1352 2 920206 1631 1 920206 1753 2+ 920206 1858 2+ 920206 2055 2+ 920207 0236 1- 920207 0736 1- 920207 1155 2+ 920207 1327 1+ 920207 1510 2 920207 1635 1 920207 1704 1+ 920207 1812 2 920207 1931 1+ 920208 0724 1- 920208 1117 1+ 920208 1144 1- 920208 1215 1 920208 1530 1- 920208 1601 1- 920208 1731 1- 920208 1744 1- 920208 1846 1- 920208 1946 1- 920208 2016 1- 920208 2100 1- 920208 2125 1 920209 0130 1- 920209 0926 1- 920209 1052 1 920209 1244 1 920209 1606 1- 920209 1842 1- 920209 2042 1 920209 2114 2 920209 2212 2 920210 0821 1 920210 0937 1 920210 1101 1 920210 1236 1- 920210 1548 1+ 920210 1946 2 920210 2215 2 920211 0606 1+ 920211 0811 1- 920211 0945 1+ 920211 1006 1- 920211 1300 2 920211 1502 1 920211 2123 2 920212 0015 1 920212 0621 1- 920212 1828 1+ 920212 1900 1+ 920212 2120 1 920212 2222 1+ 920213 0043 1- 920213 0739 1- 920213 1850 1- 920213 2109 2 920214 0110 1 920214 1125 1- 920214 1234 1- 920214 1401 1 920214 1444 1 920214 1529 1- 920214 1606 1- 920214 1716 1 920214 1804 1 920214 1948 1+ 920214 2033 1+ 920214 2149 1+ 920214 2309 2+ 920215 0838 1+ 920215 1004 2 920215 1149 1+ 920215 1252 1 920215 1328 1- 920215 1459 1- 920215 1821 1+ 920215 1858 2 920215 1925 2 920215 2137 2+ 920216 0900 2 920216 1104 1 920216 1235 2+ 920216 1400 1- 920216 1435 1- 920216 1453 1- 920216 1545 2 920216 1759 1- 920216 1840 1 920216 2045 1 920216 2245 1+ 920217 0122 1 920217 0851 1- 920217 1000 1+ 920217 1128 1- 920217 1310 1- 920217 1544 2+ 920217 1655 2 920217 1740 1- 920217 1755 1 920217 1842 1- 920217 1952 1- 920217 2037 1 920217 2212 1+ 920218 0845 1- 920218 1322 1- 920218 1334 1 920218 1412 1 920218 1448 2 920218 1703 2 920218 1734 1 920218 1821 1- 920218 2001 1 920218 2040 2+ 920218 2200 1+ 920219 1021 1- 920219 1158 1 920219 1250 1- 920219 1352 1+ 920219 1430 1 920219 1452 2 920219 1537 2 920219 1829 1 920219 1923 2 920219 2101 2+ 920219 2233 2 920219 2329 1 920220 0751 1- 920220 1243 1+ 920220 1415 1- 920220 1530 1- 920220 1653 1+ 920220 1755 2+ 920220 1955 2 920220 2030 1+ 920221 1019 2 920221 1358 1- 920221 1430 1- 920221 1440 1- 920221 1831 1- 920221 2202 2 920222 1045 1 920222 1410 1 920222 1621 2+ 920222 1910 1 920222 2117 2 920223 0945 1- 920223 2043 1 920223 2244 1 920224 1116 2 920224 1840 1+ 920224 2221 2 920224 2330 3+ 920225 1030 1- 920225 1818 1+ 920225 2358 1 920226 1212 1 920226 1259 1- 920226 1809 1- 920226 1825 1+ 920226 1901 1 920226 2006 2 920226 2325 2+ 920227 0030 1 920227 0955 2+ 920227 2030 1 920228 0717 1- 920228 1609 1+ 920228 2111 2 920229 0741 1 920229 1332 1+ 920229 1645 1+ 920229 2039 2+ ******************************************* Importance Summary February 1992 1- events: 74 1 events: 63 1+ events: 38 2 events: 38 2+ events: 18 3 events: 0 3+ events: 1 Total events: 232