AAVSO Sudden Ionospheric Disturbance Report March 1993 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 A-76 A-77 A-78 A-79 YYMMDD Event Peak (UT) Importance 930301 1100 1- 930301 1653 2+ 930301 1907 1- 930301 2333 1- 930302 1510 2 930302 1820 2+ 930302 2046 1 930302 2114 2+ 930303 0707 1- 930303 1055 1+ 930303 1530 1 930303 1732 1- 930303 1946 1 930304 0109 2 930304 1017 1- 930304 1035 1- 930304 1225 1+ 930304 1517 1- 930304 1904 1- 930305 0046 1 930305 1124 1- 930306 0055 1- 930306 1009 1- 930306 1029 1- 930306 1038 2 930306 1245 1- 930306 1900 1- 930306 1915 1- 930306 2027 3 930306 2230 1- 930307 1307 1+ 930307 1654 1 930307 1830 1- 930307 2028 1 930307 2139 1 930307 2246 1 930308 0019 1- 930308 0034 1 930308 1020 1- 930308 1209 1- 930308 1750 1- 930308 2120 1- 930310 0932 1- 930310 0946 1- 930310 1201 2+ 930310 1701 1- 930310 1812 1- 930310 1824 1+ 930310 2000 1- 930311 0800 1- 930311 1153 1+ 930311 1348 1- 930311 1434 2 930311 1516 1+ 930311 1613 2+ 930311 1653 2 930311 1740 1 930311 1916 2 930311 2159 2 930312 0406 1- 930312 0713 1 930312 1201 1 930312 1237 1 930312 1820 3 930312 1849 2+ 930312 2159 1- 930313 0905 1+ 930313 1301 1- 930313 1525 2+ 930313 1759 2 930313 1917 1- 930314 1444 1- 930315 1338 1 930315 1528 2+ 930315 1852 1- 930315 1910 2 930315 2044 2+ 930316 0415 1- 930316 0913 1 930317 1527 2+ 930317 1806 1+ 930318 0115 1 930318 1438 1- 930318 1521 2+ 930318 1722 1- 930318 2259 1+ 930319 0015 2 930319 1309 2+ 930319 2003 1+ 930320 0704 1- 930320 0744 1 930320 1001 2+ 930320 1212 1 930320 1436 1 930320 1508 1- 930320 1658 1- 930320 1707 2 930320 1752 2+ 930320 1827 1- 930320 2147 1 930321 0125 1+ 930321 0339 2+ 930321 1049 1- 930321 1204 1- 930321 1510 1- 930321 1711 2 930321 1828 1 930321 2058 1 930322 0105 1+ 930322 1407 1+ 930322 1448 1- 930322 1620 2 930322 1745 1- 930322 1752 1- 930322 1953 1+ 930322 2115 1 930323 0140 1+ 930323 0806 1- 930323 1507 1- 930323 1907 1 930323 2352 2 930324 0144 1- 930324 1457 1 930325 1801 1- 930325 1920 1- 930325 1931 1- 930325 1959 1- 930325 2108 1- 930328 0820 1- 930328 0836 1- 930328 1505 1- 930329 0833 1+ 930329 1053 1- 930329 1258 2 930329 1716 2+ 930330 0102 2+ 930330 1256 1 930330 2030 2 930330 2059 2 930330 2230 1 930331 0610 1- 930331 0909 1- ******************************************* Importance Summary March 1993 1- events: 63 1 events: 27 1+ events: 16 2 events: 17 2+ events: 17 3 events: 2 3+ events: 0 Total events: 142