• 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
    2021/04/01 01:36:19 276 50 282 241 0 -6.9*1 2.1e+14 8.2e+28 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/01 09:24:06 68 6 461 459 447 -0.6*1 ---- ---- 73 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/01 20:24:05 74 16 458 466 523 2.9*1 ---- ---- 74 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/04/02 19:40:03 92 28 377 490 1096 47.2*1 2.6e+13 1.8e+28 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/04/04 05:36:05 104 13 350 215 0 -120.6*1 ---- ---- 101 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/04 06:48:06 97 38 351 401 745 19.1*1 3.7e+13 2.3e+28 101 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/06 04:36:05 276 10 193 200 271 1.6*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/06 10:00:05 145 7 673 681 745 4.8*1 ---- ---- 140 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/07 07:48:05 56 24 178 166 0 -3.4*1 3.5e+13 5.5e+27 54 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/07 09:48:05 254 24 234 322 543 12.3*1 6.8e+13 1.9e+28 258 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/07 21:16:06 344 9 421 233 0 -189.7*1 ---- ---- 341 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/08 00:48:05 252 21 160 213 337 4.4*1 2.8e+13 3.6e+27 252 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/08 01:12:05 281 22 282 441 654 17.2*1 2.2e+14 8.9e+28 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/08 08:12:05 273 19 156 121 0 -6.5*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/09 21:25:13 251 16 268 382 490 10.0*1 ---- ---- 251 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/10 00:24:05 126 12 281 296 431 4.7*1 ---- ---- 120 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/10 02:48:06 279 10 198 240 633 15.6*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/10 09:48:05 248 19 184 208 268 1.9*1 ---- ---- 249 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/10 11:12:05 252 68 124 113 31 -0.7*1 2.4e+14 1.8e+28 262 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/10 15:12:08 311 93 177 288 750 24.6*1 2.2e+14 3.5e+28 322 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/11 07:48:05 204 6 416 532 1988 161.1*1 ---- ---- 209 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/04/11 19:36:05 89 67 196 267 245 1.7*1 1.0e+16 1.9e+30 87 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/04/12 09:48:05 96 90 371 487 434 4.8 3.2e+15 2.2e+30 98 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/04/12 20:00:05 73 33 252 349 869 30.0*1 2.8e+13 8.8e+27 75 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/12 23:12:05 109 24 196 170 89 -1.7*1 4.4e+14 8.4e+28 105 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/04/13 09:36:06 102 27 305 197 0 -9.6*1 2.0e+14 9.1e+28 102 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/13 19:12:05 175 203 107 84 0 -2.8*1 7.1e+13*2 4.1e+27*2 207 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2; Partial Halo
    2021/04/14 12:12:05 77 17 545 397 0 -65.9*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/15 12:48:05 277 21 217 170 0 -12.6*1 5.7e+13 1.3e+28 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/16 00:12:05 104 20 211 205 95 -1.5*1 3.1e+13 7.0e+27 104 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/16 02:12:21 286 17 157 205 439 7.5*1 ---- ---- 279 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/16 15:12:08 92 51 168 119 0 -40.7*1 2.1e+14*2 3.0e+28*2 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/17 15:48:05 100 39 262 398 1579 101.7*1 2.9e+14 1.0e+29 107 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/17 16:36:05 111 146 763 622 677 -14.0 2.9e+15*2 8.4e+30*2 117 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/04/17 17:48:06 222 179 353 344 278 -2.2*1 7.3e+13*2 4.5e+28*2 226 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2; Partial Halo
    2021/04/18 07:00:05 293 97 144 271 311 4.2*1 4.1e+15 4.2e+29 296 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/04/18 08:12:05 105 21 241 289 610 13.6*1 4.8e+13 1.4e+28 108 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/19 06:00:05 87 46 230 248 412 5.1*1 2.5e+13 6.5e+27 108 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/19 08:36:05 94 49 264 523 1299 69.8*1 1.5e+14 5.4e+28 100 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/20 00:24:05 96 107 427 498 509 5.6*1 3.7e+15 3.4e+30 105 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/04/20 13:36:14 247 21 159 115 0 -14.9*1 4.6e+13 5.8e+27 248 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/20 21:36:07 287 46 189 402 426 8.2*1 9.0e+14 1.6e+29 286 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/21 11:48:05 232 5 217 103 0 -78.5*1 ---- ---- 235 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/21 16:00:05 278 27 533 578 648 7.6*1 1.4e+14 2.0e+29 273 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/22 05:24:05 275 113 284 264 91 -3.6*1 1.9e+14 7.6e+28 288 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/22 05:48:06 58 299 355 348 344 -0.5*1 2.2e+15*2 1.4e+30*2 103 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/04/23 00:24:07 235 18 422 612 1629 109.2*1 ---- ---- 239 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/23 01:25:41 101 59 186 441 465 9.2*1 1.0e+15 1.8e+29 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/04/23 06:24:07 277 48 330 276 0 -6.9*1 1.5e+14 8.0e+28 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/23 23:12:12 287 73 118 262 529 11.6*1 1.0e+15 7.2e+28 289 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/24 11:00:05 272 49 270 236 0 -8.1*1 1.0e+14 3.8e+28 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/24 16:24:05 280 43 188 222 492 9.0*1 7.9e+13 1.4e+28 279 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/04/25 05:12:05 278 47 190 310 380 5.8*1 7.2e+14 1.3e+29 288 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/25 12:12:06 103 85 456 579 556 7.7*1 3.8e+15 3.9e+30 120 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/25 18:36:05 269 104 240 359 352 4.6*1 1.2e+14 3.4e+28 266 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/26 11:48:05 304 102 303 313 329 1.0*1 2.8e+14 1.3e+29 316 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/26 22:23:39 213 78 120 220 383 6.0*1 1.3e+14 9.2e+27 208 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/27 03:12:10 286 4 383 413 446 3.5*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/27 06:00:05 114 10 194 221 338 3.6*1 ---- ---- 117 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/27 15:24:06 279 22 238 164 0 -18.8*1 4.4e+13 1.2e+28 289 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/04/28 05:24:05 277 13 309 387 464 7.0*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/04/28 17:12:06 276 5 308 295 255 -1.7*1 ---- ---- 271 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/29 00:48:05 261 9 198 293 559 12.8*1 ---- ---- 267 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/04/29 20:01:34 88 129 189 204 216 0.8*1 3.2e+15*2 5.7e+29*2 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Partial Halo
    2021/04/30 08:48:06 338 4 347 574 2209 200.6*1 ---- ---- 338 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/04/30 13:36:15 99 69 393 379 383 -0.7*1 7.3e+14 5.7e+29 104 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).