Compiled by C. St.Cyr (cst@sdac.nascom.nasa.gov) -- Version 1998/10/20 First C2 Central Angular Primary H-T Concave Appearance PA Width Speed Fit Accel Speed Out Date Time [UT] [deg] [deg] [km/s] [m/s^2] Feature Feature?Comments 1998/05/01 00:58 122 39 769 1 --- LE (Loop?) Yes Ragged loop(?) w/large concave-out 1998/05/01 08:27 59 20 503 1 --- LE (Jet) No Thick jet 1998/05/01 Data Gaps 11:55-15:55;16:27-23:40 1998/05/01 23:40 IP Halo 360 632 1 --- LE (Halo?) No Multiple loops (Halo?) event in progress after Data Gap 1998/05/02 05:31 Halo 360 452 1 --- LE(Halo) Yes Structured and bright in SW; faint halo elsewhere 1998/05/02 14:06 Halo 360 1044 1 --- LE(Halo) Yes Structured and bright in NW; faint halo elsewhere 1998/05/02 21:20 224 44 357 1 --- LE (Front) Maybe Flat front w/trailing structure; falls apart in C2 1998/05/03 03:16 288 13 396 1 --- LE (Arc?) No Non-radial arc(?) w/bright core? 1998/05/03 10:29 229 85 526 1 --- LE (Loop) Yes Thick loop w/trailing structure 1998/05/03 18:59 ~112 ~22 319 1 --- LE (Front) No Bright front w/structure? Falls apart in C2 1998/05/03 22:02 ~310 ~240 639 1 --- LE (Front) Yes Bright and structured in NW; Three events? 1998/05/04 05:28 99 49 377 1 --- LE (Blob) No Bright blob amid diffuse faint material; blob falls apart 1998/05/04 23:27 239 29 329 1 --- (Blob) Maybe Football shape embedded in faint diffuse material 1998/05/05 00:58 319 53 241 1 --- LE (Loop?) No Intersecting loops? Second one at 10:11 1998/05/06 00:02 ~348 ~275 840 1 --- LE (Loop) Yes Bright thick loop in SW has faint partial halo 1998/05/06 02:28 79 76 511 2 6.0 LE (Loop) Yes Bright arcade was active for several hours before erupting 1998/05/06 08:04 ~311 ~185 1053 1 --- LE (Loop) Yes Bright thick loop in NW followed by snowstorm 1998/05/07 00:28 310 85 216 2 9.7 LE (Loop) Yes Arcade with bright core 1998/05/07 01:30 83 64 390 2 5.6 (Vertex) Yes Jet near equator followed by large concave-out arcade 1998/05/07 19:12 51 17 567 1 --- LE (Fan) No Very faint filled fan 1998/05/08 02:28 285 64 405 1 --- LE (Loop) Yes Bright elongated structured loop; faint extension to North included in Width 1998/05/08 06:27 240 59 1412 1 --- LE (Materi Maybe Bright structured material 1998/05/08 08:05 86 37 505 1 --- (Material) No Blobs precede faint non-radial structured material 1998/05/08 13:01 249 77 435 1 --- LE (Loop) Yes Bright structured arcade 1998/05/08 23:10 102 80 706 1 --- LE (Materi Maybe Structured non-radial material 1998/05/09 01:37 248 46 1117 1 --- LE (Mound) No Faint mound w/some internal structure 1998/05/09 03:35 271 143 1726 1 --- LE (Loop) Yes Very bright loop w/extreme structure; slow prom pieces in NNW 1998/05/09 15:18 230 36 563 1 --- LE (Tongue No Faint tongue w/some structure 1998/05/09 20:04 237 62 1256 1 --- LE (Cloud) Yes Extremely bright cloud of structured (prom) material; large concave-out 1998/05/10 05:55 261 34 348 1 --- LE (Tongue No Faint non-radial tongue followed by second brighter tongue 1998/05/10 14:07 230 67 988 2 41.8 LE (Materi Yes Faint rim surrounds large bright structured core 1998/05/11 ~05:38 ~284 ~32 --- --- --- --- No Material ejected along existing features 1998/05/11 14:27 ~291 ~61 919 2 37.3 LE (Loop) Yes Thick loop, adjacent to SW event 1998/05/11 14:27 ~205 ~110 567 1 --- LE (Loop) Yes Arcade, adjacent to NW event 1998/05/11 21:55 ~225 ~270 877 1 --- LE (Front) Yes Partial halo brightest in NW; doily 1998/05/12 03:55 64 61 857 2 12.7 LE (Loop) Yes Loop arcade 1998/05/12 08:55 ~215 ~230 1073 1 --- LE (Loop) Maybe Bright structured dome w/extensions; could be something faint ahead of this 1998/05/12 15:55 ~270 ~40 390 1 --- (Spike) No Diffuse non-radial material 1998/05/12 23:55 ~220 ~250 746 1 --- LE (Materi Maybe Brightest in NW, faint under South into East 1998/05/13 04:26 11 48 272 1 --- LE (Loop) No Faint filled loop sweeps in PA toward NW 1998/05/13 05:27 252 28 1157 1 --- LE (Materi Yes Bright triangular area moves non-radially 1998/05/13 15:27 274 18 350 1 --- LE (Materi No Non-radial diffuse material 1998/05/13 19:50 341 66 210 1 --- LE (Loop) No Thick faint loop; possible trailing loop 1998/05/14 03:55 ~240 ~290 373 1 --- LE (Cloud) Yes Cloud w/structure moves non-radially; brightest in West 1998/05/14 16:55 316 29 562 1 --- LE (Fan) No Fan? Followed by deflection? 1998/05/15 No new CMEs this day 1998/05/16 01:55 272 91 382 1 --- LE (Cloud) Yes Structured asymmetric cloud 1998/05/16 ~04:26 301 34 15 1 --- (Cavity) No Cavity slowly rises; evaporates/ejects material above 1998/05/17 09:55 99 29 167 1 --- LE (Front) No Extremely faint linear front; falls apart 1998/05/17 14:27 300 13 --- --- --- --- No Non-radial thick jet or fan 1998/05/18 04:01 314 34 407 1 --- LE (Jet) Maybe Narrow jet followed by faint (concave-out?) cloud 1998/05/19 01:27 109 84 231 1 --- LE (Front) Yes Fuzzy front precedes loop w/trailing structure & large concave-out 1998/05/19 10:27 275 115 796 1 --- LE (Loop) Yes Bright structured arcade 1998/05/20 00:29 ~98 ~45 246 1 --- LE (Materi No Several very faint blobs and/or linear structures 1998/05/20 04:00 332 13 239 1 --- LE (Cloud) No Faint narrow cloud 1998/05/20 ~16:00 242 73 136 1 --- LE (Materi Yes Slanted line precedes diffuse material and arcade 1998/05/21 05:27 286 46 788 2 12.8 LE (Front) Yes Bright thick front precedes structured arcade 1998/05/21 mid-day 239 69 --- --- --- --- No Arcade; difficult to pin start time 1998/05/21 18:58 107 82 275 1 --- LE (Front) No Faint structured cloud w/slanted front 1998/05/22 08:33 293 29 537 1 --- (Front) No Diffuse material precedes slanted linear front 1998/05/22 10:35 67 93 389 1 --- (Loop) Yes Diffuse front precedes structured arcade; could be two events 1998/05/23 00:28 236 89 326 1 --- (Loop) Yes Swelling streamer; diffuse front w/core 1998/05/24 01:30 58 11 242 1 --- LE (Jet) No Non-radial jet 1998/05/24 06:58 109 27 306 1 --- (Material) No Diffuse material 1998/05/24 09:01 63 21 349 1 --- LE (Jet) No Non-radial jet, brighter and thicker than earlier 1998/05/25 No new CMEs this day 1998/05/26 early 67 26 179 1 --- (Blob) Maybe Material emerges high in C2? Bright core(?) later 1998/05/26 20:04 292 34 160 1 --- LE (Loop) No Thick loop, falls apart in C2 1998/05/26 23:28 34 39 253 1 --- LE (Loop) No Faint elongated filled non-radial loop 1998/05/27 07:04 ~262 ~35 --- --- --- --- No Diffuse non-radial material precedes partial halo 1998/05/27 13:45 ~229 ~238 957 1 --- LE (Loop) Yes Swelling streamer precedes partial halo; bright & structured in SW & NW 1998/05/27 ~14:19 114 84 155 2 2.2 (Loop) Yes Swelling streamer becomes structured arcade 1998/05/27 23:56 61 21 353 1 --- LE (Materi No Non-radial material; falls apart in C2 1998/05/28 04:00 282 60 700 2 33.6 (Loop) Yes Thick structured loop 1998/05/28 late ~138 ~65 462 1 --- (Material) No Faint narrow loop ejected? Several discrete NR spits 1998/05/29 01:30 271 82 481 2 13.4 LE (Front) Yes Thick structured front and arcade 1998/05/29 11:27 74 48 238 1 --- LE (Cloud) No Faint structured cloud 1998/05/29 13:31 358 83 313 1 --- LE (Loop) No Extremely faint asymmetric loop 1998/05/29 18:58 109 23 863 1 --- LE (Tongue No Non-radial structured tongue 1998/05/29 22:30 270 78 755 2 9.6 (Front) Yes Diffuse material precedes structured arcade; wider in North? 1998/05/30 02:27 79 97 501 2 7.6 (Front) Yes Faint diffuse material precedes bright structured arcade 1998/05/30 23:28 256 51 488 1 --- LE (Front) Yes Structured front falls apart in C2, followed by small arcade 1998/05/31 04:26 86 100 683 1 --- LE (Cloud) Yes Fast structured cloud; large concave-out 1998/05/31 midday 143 34 274 1 --- (Blob) No Streamers appear and sweep South; blob(s)