AAVSO Sudden Ionospheric Disturbance Report March 1998 Observers: A-05 A-09 A-50 A-52 A-62 A-72 A-81 A-82 A-87 A-89 YYMMDD Event Peak (UT) Importance 980303 2045 1- 980303 2056 1+ 980303 2205 1- 980304 0723 1+ 980304 1739 1 980304 1917 1+ 980304 2137 1 980305 0917 1 980305 1239 1- 980305 1510 1+ 980305 1737 1+ 980305 2012 1 980308 1910 1+ 980313 2057 1+ 980313 2112 2 980314 1451 2 980315 1447 1 980315 1459 2+ 980315 1547 1+ 980315 1609 1+ 980315 1635 1 980315 1707 1+ 980315 1739 2 980315 1917 2+ 980315 2022 2 980315 2105 2 980315 2148 2+ 980315 2250 2 980316 2208 2 980317 1257 1 980317 1338 1 980318 1106 2 980319 0520 2 980319 1849 2 980319 2030 1+ 980320 1208 1- 980320 1237 1- 980320 1535 1+ 980320 1949 1- 980322 0704 2+ 980322 0837 1 980322 1638 1- 980322 2019 1 980322 2243 1 980323 2148 2 980324 1839 1- 980324 2013 1- 980325 1237 3 980326 1252 2+ 980327 1319 1- 980327 2218 3 980328 0719 2 980328 1958 1+ 980329 1733 1+ ******************************************* Importance Summary March 1998 1- events: 10 1 events: 11 1+ events: 14 2 events: 12 2+ events: 5 3 events: 2 3+ events: 0 Total events: 54