• CME heights (with respect to the disk center) are measured at the fastest segment of the leading edge.
  • PA= Position Angle measured from Solar North in degrees (counter-clockwise)
  • Halo CMEs are indicated in the "Central PA" column. The letters ("S", "BA", "OA") in the brackets show type of halo CMEs. See examples.
  • Click on date to view Java script movie of the CME.
  • Click on time to see height-time measurements as a text file.
  • Click on speed to view height-time plots of the CME.
  • Beware of data gaps. Check for LASCO/C2 data gaps here.

  • A complete description of the catalog
  • Click here to search the entire catalog.

    First C2 Appearance
    Date Time [UT]     		Central
    PA
    [deg]     		Angular
    Width [deg]     		Linear
    Speed [km/s]     		2nd-order Speed at final height [km/s] 2nd-order Speed at 20 Rs [km/s] Accel
    [m/s2]     		Mass
    [gram]     		Kinetic
    Energy
    [erg]     		MPA [deg] Movies, plots, & links Remarks
    2020/10/01 00:36:05 99 12 314 360 834 25.9*1 ---- ---- 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/03 05:12:06 345 6 262 415 1601 105.7*1 ---- ---- 343 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/03 23:48:05 259 18 217 264 594 15.6*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2020/10/04 11:24:05 255 12 155 114 0 -9.4*1 ---- ---- 257 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/04 22:36:05 259 13 244 251 312 1.8*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2020/10/05 00:24:07 327 9 243 144 0 -57.3*1 ---- ---- 322 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/05 10:12:05 252 12 227 236 323 2.5*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/05 12:36:05 108 5 322 467 1362 75.1*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/05 13:25:41 335 7 592 227 0 -548.9*1 ---- ---- 329 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2020/10/05 20:48:05 263 6 168 242 569 13.4*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/06 06:00:05 274 83 355 693 587 14.3 ---- ---- 290 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/06 15:12:09 85 48 71 88 183 1.3*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/09 23:24:06 163 6 445 276 0 -161.8*1 ---- ---- 162 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/10 03:36:05 276 23 109 132 249 2.4*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2020/10/11 11:48:05 271 29 92 75 0 -2.3*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2020/10/11 12:00:05 96 34 124 43 0 -25.3*1 ---- ---- 103 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/11 12:36:05 10 30 316 476 1216 59.9*1 ---- ---- 3 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/11 14:00:05 22 6 365 351 0 -13.1*1 ---- ---- 23 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/13 20:48:05 277 63 139 187 381 5.6*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/14 06:24:05 286 49 66 61 0 -0.3*1 ---- ---- 281 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/14 09:48:06 96 42 50 59 162 1.1*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/14 22:12:05 97 58 80 122 164 1.2*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2020/10/15 16:36:05 280 34 156 141 102 -0.7*1 ---- ---- 276 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/16 13:25:21 275 55 271 139 0 -18.0*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/18 01:48:05 273 39 218 283 614 14.8*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/18 09:12:10 271 63 438 137 0 -33.8 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/18 21:24:05 275 8 283 318 411 4.5*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/20 01:25:18 115 28 158 150 0 -2.5*1 ---- ---- 113 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/20 09:12:11 8 10 364 390 995 36.4*1 ---- ---- 11 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2020/10/20 12:12:05 279 15 135 184 334 4.4*1 ---- ---- 286 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/20 20:12:05 188 5 687 607 0 -73.8*1 ---- ---- 190 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/21 20:56:51 279 52 400 460 668 13.6*1 ---- ---- 276 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/22 13:25:19 285 225 388 254 0 -18.0*1 ---- ---- 280 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2020/10/22 14:00:06 58 56 208 281 580 13.1*1 ---- ---- 66 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/23 06:36:05 274 21 147 210 749 23.1*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/23 23:13:43 84 79 413 465 418 4.1 ---- ---- 96 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C3
    2020/10/24 08:24:07 221 13 179 175 0 -2.4*1 ---- ---- 223 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/25 18:48:05 99 22 139 161 200 1.1*1 ---- ---- 96 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/26 07:48:05 118 59 82 113 309 4.2*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/26 18:00:05 71 83 315 297 257 -1.9 ---- ---- 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/27 07:12:05 125 109 206 216 227 0.5*1 ---- ---- 117 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/28 13:25:41 82 50 158 188 228 1.5*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/29 06:12:05 172 12 366 301 0 -60.4*1 ---- ---- 170 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/29 10:00:05 81 40 128 94 0 -8.1*1 ---- ---- 108 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/30 02:24:05 249 32 318 404 462 6.8*1 ---- ---- 240 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/30 03:24:05 290 7 203 268 750 22.3*1 ---- ---- 288 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/30 11:12:05 92 25 132 194 409 6.7*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/30 12:24:05 236 12 259 339 789 24.5*1 ---- ---- 237 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2020/10/30 16:24:05 77 13 235 279 360 4.1*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2020/10/30 18:51:17 300 8 204 441 2067 176.9*1 ---- ---- 303 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2020/10/30 19:48:05 301 11 379 557 1176 57.0*1 ---- ---- 300 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/30 19:48:05 260 15 169 271 462 9.5*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2020/10/31 01:25:43 257 28 534 649 673 12.3 ---- ---- 258 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/31 07:12:05 272 30 499 499 500 0.1*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2020/10/31 11:00:05 92 20 154 67 0 -19.8*1 ---- ---- 88 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2020/10/31 18:36:05 85 23 305 257 0 -9.1*1 ---- ---- 84 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event

    *1 Acceleration is uncertain due to either poor height measurement or a small number of height-time measurements (See Section 3.4 of Yashiro et al. 2004 for details).
    *2 Mass and Kinetic Energy are uncertain due to poor mass estimate. Mass measurement assumes that the CME material is in the sky-plane. Kinetic Energy is obtained from the mass and linear speed (see Vourlidas et al. 2000 for details).