• 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
    2019/08/01 20:56:52 241 11 273 550 2373 233.8*1 ---- ---- 240 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/08/04 12:00:05 237 30 48 59 120 0.6*1 ---- ---- 237 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/04 16:00:05 286 12 179 193 319 3.4*1 ---- ---- 285 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/04 17:36:05 282 37 431 360 136 -9.1*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/05 02:12:05 284 13 154 85 0 -17.3*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/05 03:12:11 84 23 325 222 0 -103.3*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/08/05 19:24:05 232 16 223 261 375 4.6*1 ---- ---- 235 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/05 22:18:05 239 8 357 387 437 3.7*1 ---- ---- 240 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/06 01:36:05 261 68 554 645 727 15.4*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/06 04:12:05 259 55 164 186 292 2.8*1 ---- ---- 252 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/06 11:48:05 253 87 333 377 450 5.1*1 ---- ---- 244 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/06 21:48:05 272 36 248 176 0 -14.6*1 ---- ---- 280 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/07 00:12:05 242 8 451 450 446 -0.3*1 ---- ---- 239 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/07 05:12:05 261 12 388 462 571 9.6*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/09 15:29:55 89 70 152 274 309 3.9*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2019/08/10 12:36:05 87 13 88 118 261 2.9*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/11 19:48:06 61 35 169 155 0 -2.1*1 ---- ---- 60 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/12 21:12:09 83 37 224 468 406 7.1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2019/08/13 15:24:05 87 39 243 261 308 1.9*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/14 15:37:37 222 8 533 475 0 -45.1*1 ---- ---- 226 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/08/16 08:36:06 266 8 278 279 306 0.7*1 ---- ---- 267 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/08/19 04:00:05 265 36 226 301 733 21.9*1 ---- ---- 258 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/08/19 08:12:05 75 9 250 329 428 6.8*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/20 08:12:05 62 5 375 462 958 34.3*1 ---- ---- 68 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/08/21 01:25:43 59 12 373 377 410 1.4*1 ---- ---- 69 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/22 19:00:05 251 11 254 302 784 23.7*1 ---- ---- 251 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/08/25 00:12:05 95 50 132 197 503 11.8*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/25 01:36:15 276 10 236 185 0 -4.7*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/27 10:00:05 288 39 158 260 428 7.6*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/27 21:24:05 278 27 166 201 280 2.7*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/08/28 09:48:05 230 84 167 172 187 0.4*1 ---- ---- 232 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/08/29 21:12:10 280 24 139 98 0 -8.1*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2

    *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).