• 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
    2021/02/01 09:12:10 241 13 216 324 1341 74.6*1 ---- ---- 246 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/01 22:00:06 337 9 385 326 0 -21.4*1 ---- ---- 334 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/02 02:48:06 337 10 335 557 2191 196.4*1 ---- ---- 335 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only 3 points; Only C2
    2021/02/02 13:25:43 113 10 223 273 717 20.2*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/02 14:48:05 58 13 287 113 0 -69.0*1 ---- ---- 64 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/03 08:48:05 279 94 147 354 343 5.0 ---- ---- 282 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/02/04 04:36:05 344 6 332 410 1355 74.2*1 ---- ---- 343 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/04 16:48:05 78 40 240 251 277 1.0*1 ---- ---- 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/06 05:24:05 282 7 177 219 497 9.7*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/07 00:00:05 279 12 167 256 411 7.0*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/07 07:12:05 142 30 169 260 499 10.1*1 ---- ---- 126 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/07 10:48:05 277 9 154 268 499 10.6*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/08 01:25:42 275 11 150 159 218 1.3*1 ---- ---- 276 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/02/08 09:12:10 60 12 143 147 200 0.9*1 ---- ---- 62 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/09 13:25:42 235 88 79 152 351 5.2*1 ---- ---- 227 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/10 02:36:05 84 91 66 133 201 1.7*1 ---- ---- 90 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/11 14:12:34 93 11 292 343 555 11.8*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/02/11 19:12:05 124 13 514 622 732 14.8*1 ---- ---- 120 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/02/12 12:12:06 272 82 232 436 364 5.8*1 ---- ---- 261 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/13 19:24:05 265 13 268 417 517 10.5*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/02/14 20:36:05 235 13 395 646 2011 168.8*1 ---- ---- 238 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/02/15 04:12:05 92 10 214 344 1311 71.0*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/02/15 14:24:06 95 22 203 292 620 15.2*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/15 16:12:05 114 15 144 246 619 16.8*1 ---- ---- 111 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/02/16 04:48:05 128 28 149 92 0 -13.6*1 ---- ---- 124 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/16 15:24:05 121 29 617 628 641 1.7*1 ---- ---- 125 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/02/17 09:24:05 282 18 209 176 0 -3.5*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/17 10:12:07 82 12 241 220 0 -7.6*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/02/17 23:12:10 117 25 577 753 1229 56.3*1 ---- ---- 122 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/18 06:48:05 228 6 254 236 0 -10.1*1 ---- ---- 236 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/02/19 00:12:05 81 21 67 70 106 0.3*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/19 09:24:21 266 76 89 203 252 2.8*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/20 03:48:05 89 11 371 408 418 3.1*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/02/20 11:24:05 87 207 555 821 710 16.7 ---- ---- 110 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/02/21 08:24:06 88 75 295 510 429 7.0 ---- ---- 86 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/02/21 14:36:05 245 12 554 797 1951 156.1*1 ---- ---- 249 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/22 07:48:05 296 10 165 219 587 14.0*1 ---- ---- 291 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/02/22 09:48:05 261 24 150 134 0 -5.2*1 ---- ---- 258 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/02/22 12:24:05 140 44 102 193 406 6.8*1 ---- ---- 142 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/23 00:24:05 253 83 219 372 342 4.7 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/02/23 03:24:05 131 11 404 373 0 -12.6*1 ---- ---- 124 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/23 15:12:10 117 22 239 338 1046 44.3*1 ---- ---- 115 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/02/24 01:36:15 111 20 178 192 285 2.5*1 ---- ---- 112 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/24 09:12:11 92 75 220 156 0 -5.3*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/24 15:05:48 68 61 216 461 448 8.9*1 ---- ---- 70 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/24 20:56:53 115 13 444 492 497 3.8*1 ---- ---- 115 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/26 08:12:05 274 77 175 172 167 -0.2*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/26 18:00:06 225 8 168 153 0 -5.8*1 ---- ---- 227 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/02/27 00:12:05 89 21 241 196 0 -8.1*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/27 05:24:05 269 21 178 216 432 6.9*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/27 13:48:06 273 67 132 336 513 11.0*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/27 14:24:05 274 23 243 243 246 0.1*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/27 17:12:05 221 6 510 647 882 26.7*1 ---- ---- 225 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/27 20:48:06 272 64 100 160 214 1.9*1 ---- ---- 271 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/02/28 07:12:06 269 75 227 550 459 8.7 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30

    *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).