AAVSO Sudden Ionospheric Disturbance Report September 2011 Observers: A102 A115 A118 A119 A120 A121 A122 A124 A125 A128 A91 A94 A97 YYMMDD Event Peak Importance 110901 0123 1- A122 - XRA 110901 1250 1+ 110901 1821 2 110902 0837 1- A122 - XRA 110903 0604 1+ A102 - FLA 110903 0756 2 110903 1352 1- A125 - FLA 110903 1736 1+ 110904 0111 1- 110904 0454 1+ 110904 0616 1+ A102 - XRA 110904 0835 2+ A119 - QUAL 110904 0842 3+ A118 - QUAL 110904 1017 3 110904 1129 1- 110904 1140 3+ A118 - XRA 110904 1146 2+ 110904 1533 2+ 110904 1947 1 A94 - XRA 110904 2035 1 A94 - QUAL 110904 2345 1- A122 - QUAL 110905 0758 2 110905 1027 1+ A119 - QUAL 110905 1101 1 A119 - QUAL 110905 1125 2 110905 1346 1- 110905 1407 2 110905 1659 1+ 110906 0148 2+ 110906 0612 2 110906 2222 2+ 110906 2338 3 A124 - QUAL 110906 2355 1- A122 - QUAL 110907 0000 A124 - QUAL 110907 1046 2+ A119 - QUAL 110907 2005 2+ 110907 2241 2 110908 1049 3 110908 1442 3+ A118 - QUAL 110908 1548 2+ 110908 1600 2 110908 1847 2+ 110909 0217 1 A122 - XRA 110909 0614 2 110909 0812 3+ A118 - QUAL 110909 1248 2+ 110909 1458 3 110909 2021 1- A122 - XRA 110909 2315 2+ A121 - XRA 110910 0544 1+ A122 - QUAL 110910 0728 3 110910 0736 2+ 110910 1725 2 110910 2150 2 A121 - QUAL 110911 0853 2+ 110911 1004 2+ 110911 1327 2 110911 2041 1- A122 - XRA 110912 1225 3 110912 2054 2+ 110913 0408 1- A122 - XRA 110913 1244 3 110914 0836 1+ 110914 1125 3 110914 1606 1- 110914 1628 2+ 110914 2053 2 110915 0029 1- A122 - XRA 110915 0213 1- A122 - XRA 110915 0239 1- A122 - XRA 110915 1058 2 A119 - XRA 110915 1627 2+ 110915 2038 1- A122 - XRA 110915 2115 2 110915 2255 2+ A121 - XRA 110915 2301 1- A122 - XRA 110916 0048 1+ A124 - QUAL 110916 0257 2 A122 - XRA 110916 0444 2+ 110916 0802 1- A122 - XRA 110916 0845 1 110916 1138 2+ 110916 1535 1 A121 - XRA 110916 1722 2+ 110916 1849 2 110916 2220 2 A121 - XRA 110918 0736 2 110918 1047 3+ A118 - XRA 110918 1056 3+ A119 - XRA 110918 1240 3 110918 1554 2 110919 1542 2 110920 0007 1- A122 - XRA 110920 0513 2 110920 0657 1+ 110921 1124 3 110921 1212 3 110921 2033 1- A122 - XRA 110922 0431 2+ A120 - XRA 110922 0437 1+ A122 - XRA 110922 0904 3 110922 1000 1- A119 - XRA 110922 1017 1- A119 - QUAL 110922 1051 3+ 110922 1550 3+ A118 - FLA 110922 1556 2 A119 - FLA 110922 2019 1- A97 - XRA 110922 2029 1- A122 - XRA 110922 2050 2 A121 - QUAL 110922 2235 2+ A121 - XRA 110922 2253 1 A122 - QUAL 110922 2347 1 A122 - XRA 110923 0000 2+ 110923 0037 2 110923 0157 2 110923 0220 1+ A91 - QUAL 110923 0618 2 110923 0818 1+ 110923 0849 3 110923 1220 3 110923 1506 1+ A119 - XRA 110923 1536 2 110923 1820 2 A94 - XRA 110923 1830 2+ A121 - XRA 110923 1914 2 110923 2148 1 110923 2211 2+ 110923 2358 1- 110924 0000 2+ A122 - QUAL 110924 0706 3 110924 0817 1- 110924 0845 1+ 110924 0934 2+ 110924 0950 1+ A91 - XRA 110924 1133 3 110924 1245 3+ 110924 1327 2+ A97 - XRA 110924 1642 1- 110924 1655 1+ 110924 1721 2 110924 1738 1 A97 - XRA 110924 1806 2 110924 1824 2+ A97 - XRA 110924 1924 1+ 110924 2033 1 110924 2051 2 A97 - XRA 110924 2127 1 110924 2410 1 A91 - XRA 110925 0234 2 110925 0326 3 A122 - XRA 110925 0446 2+ A102 - XRA 110925 0521 3 A122 - FLA 110925 0700 1+ 110925 0836 1 110925 0850 1 110925 0931 2+ 110925 1035 3+ A91 - QUAL 110925 1129 1+ 110925 1344 1 A119 - FLA 110925 1448 2 A128 - QUAL 110925 1510 1+ A119 - QUAL 110925 1535 1+ 110925 1618 2 110925 1658 2 110925 1716 2+ A97 - FLA 110925 2222 1+ 110925 2234 2 110926 0048 2+ A128 - XRA 110926 0152 2 A128 - XRA 110926 0731 1+ 110926 0750 1+ 110926 0943 1+ 110926 1001 2 110926 1314 2+ 110926 1335 3 110926 1446 3 110926 1653 3 110926 1659 1 110926 2010 2+ A121 - XRA 110927 0505 2+ 110927 0746 1+ 110927 0811 2 110927 1054 2+ 110927 1147 2+ 110927 1536 1 A119 - FLA 110927 2059 2+ 110928 0823 2+ 110928 1232 2+ 110928 1305 3+ A121 - QUAL 110928 1328 2+ 110928 1347 1 A97 - FLA 110928 2248 1- A122 - QUAL 110929 1023 3+ A118 - XRA 110929 1240 3 110929 1807 2+ 110930 0255 1- 110930 0356 2+ 110930 1852 1- 110930 1906 2 110930 2040 3 A121 - XRA ************************************************** Importance Summary - Sep 2011 1- events: 30 1 events: 19 1+ events: 28 2 events: 42 2+ events: 45 3 events: 23 3+ events: 12 ------------------ Total events: 199