• 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
    2019/09/01 03:24:05 95 38 240 316 559 11.9*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/09/02 09:42:06 83 12 273 147 0 -33.0*1 ---- ---- 96 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C3
    2019/09/03 15:12:09 14 4 383 445 1098 45.4*1 ---- ---- 17 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/08 01:25:42 258 53 105 138 265 3.1*1 ---- ---- 258 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/09/08 16:12:05 60 64 181 209 438 7.6*1 ---- ---- 65 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/09 12:00:05 86 43 213 197 59 -2.0*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/09/10 05:00:05 83 28 173 190 223 1.1*1 ---- ---- 83 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/09/11 04:48:06 81 11 273 124 0 -69.7*1 ---- ---- 82 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/09/11 11:48:05 89 71 99 134 211 1.7*1 3.1e+14 1.5e+28 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/09/12 08:00:05 347 9 311 238 0 -67.4*1 ---- ---- 347 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/12 16:48:05 102 12 399 633 1657 112.3*1 ---- ---- 108 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/09/13 00:36:05 262 40 196 184 0 -2.5*1 ---- ---- 263 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/09/13 08:00:05 266 26 171 163 0 -1.7*1 4.7e+13 6.9e+27 269 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/09/13 11:12:05 96 24 218 315 566 13.7*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/09/14 07:12:07 89 42 158 141 0 -3.8*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/09/16 05:24:05 276 80 276 336 1163 53.7*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/16 14:48:06 85 16 248 347 416 6.6*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/09/17 04:36:06 263 11 217 380 1161 55.7*1 ---- ---- 264 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/17 06:48:05 48 10 294 263 0 -14.9*1 ---- ---- 50 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/09/18 06:36:05 65 7 247 350 1107 49.6*1 ---- ---- 68 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/18 07:00:05 275 30 219 226 311 2.1*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/09/18 20:56:54 70 8 135 120 0 -9.2*1 ---- ---- 70 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2019/09/20 02:00:05 111 26 137 201 521 11.4*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/22 00:48:05 146 8 181 437 1979 167.2*1 ---- ---- 135 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2019/09/22 04:36:06 68 17 389 591 1436 83.9*1 ---- ---- 69 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/23 12:48:05 253 8 214 221 394 4.7*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2019/09/23 20:24:05 274 24 70 47 0 -3.0*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/26 00:36:05 179 4 343 305 0 -19.0*1 ---- ---- 181 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/26 01:36:14 274 26 125 174 352 5.1*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2019/09/26 03:48:05 182 9 390 445 920 30.2*1 ---- ---- 183 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/26 05:24:05 91 19 283 267 210 -2.0*1 ---- ---- 90 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2019/09/28 08:00:05 89 40 112 130 266 2.6*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/30 05:12:05 287 15 167 196 389 5.5*1 ---- ---- 285 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2019/09/30 14:00:06 85 30 294 294 300 0.2*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very 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).