• 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
    2021/07/01 09:12:10 255 43 92 0 0 -10.8*1 9.8e+13 4.1e+27 254 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/07/01 20:36:05 258 51 245 289 313 2.9*1 1.4e+14 4.1e+28 261 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/01 21:24:05 76 87 261 309 296 1.8*1 1.1e+13 3.7e+27 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/02 11:12:05 70 39 305 427 572 13.1*1 5.7e+12 2.7e+27 77 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/02 15:36:06 270 128 487 519 512 2.2 4.8e+15*2 5.7e+30*2 281 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/07/03 03:12:10 263 72 360 395 431 3.3*1 8.7e+14 5.7e+29 264 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/03 07:36:05 263 67 426 435 487 2.6*1 2.0e+14 1.8e+29 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/03 08:48:05 261 71 416 265 212 -11.3 1.9e+15 1.6e+30 270 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/03 14:48:05 263 69 455 466 467 0.9 7.7e+14 8.0e+29 267 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/04 06:00:05 263 61 211 144 0 -9.8*1 6.0e+14 1.3e+29 267 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/04 11:12:05 266 21 84 97 206 1.6*1 6.5e+13 2.3e+27 266 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/04 23:36:05 76 68 219 196 0 -4.8*1 1.4e+14 3.4e+28 57 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/07/05 12:48:05 353 10 530 752 1696 116.1*1 ---- ---- 348 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/07/05 15:36:05 77 43 169 169 173 0.1*1 1.3e+14 1.8e+28 85 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/05 17:12:05 266 83 545 693 687 13.3 2.0e+15 3.0e+30 275 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/06 00:00:05 268 104 377 434 423 3.1 3.9e+15 2.8e+30 281 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/07 14:36:05 294 9 229 266 414 5.6*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/07 15:15:03 249 33 69 64 0 -1.1*1 4.3e+14 1.0e+28 248 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/07 16:12:05 271 97 284 310 337 1.9*1 2.8e+15 1.1e+30 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/09 08:12:05 265 75 356 358 366 0.4*1 3.3e+14 2.1e+29 279 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/09 11:12:05 272 98 498 392 203 -13.2 1.1e+15 1.4e+30 287 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/09 17:36:05 262 110 668 561 580 -10.5 2.1e+15 4.7e+30 294 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/10 02:48:05 261 70 361 290 271 -4.5 7.3e+14 4.7e+29 276 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/10 11:48:05 267 75 358 247 147 -7.9*1 4.8e+14 3.1e+29 282 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/10 14:36:05 91 61 320 356 429 4.3*1 1.1e+15 5.6e+29 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/10 17:48:05 Halo 360 348 370 535 7.5*1 3.8e+14*2 2.3e+29*2 48 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/11 06:48:05 269 55 252 403 422 7.1*1 2.4e+14 7.8e+28 268 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/11 17:48:05 81 128 238 223 170 -1.4*1 5.6e+14*2 1.6e+29*2 70 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Partial Halo
    2021/07/12 06:12:05 358 271 322 150 0 -10.1*1 3.9e+15*2 2.0e+30*2 55 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Partial Halo
    2021/07/12 07:24:05 267 80 378 275 0 -10.6*1 2.4e+15 1.7e+30 282 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/13 03:36:06 109 100 208 342 369 5.5*1 3.2e+15 7.0e+29 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/13 15:05:44 74 19 273 291 426 4.9*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/13 15:36:05 246 69 176 164 0 -1.6*1 2.1e+15 3.3e+29 248 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/07/13 19:00:05 Halo 360 1101 951 563 -54.5*1 5.1e+15*2 3.1e+31*2 8 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/14 00:24:05 84 71 367 386 429 2.6*1 1.8e+14 1.2e+29 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/14 02:24:05 245 59 276 305 359 2.9*1 1.7e+13 6.5e+27 254 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/14 07:36:05 231 40 218 227 259 1.0*1 2.9e+13 6.8e+27 235 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/14 22:12:05 Halo 360 395 247 0 -19.1*1 4.7e+14*2 3.7e+29*2 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/07/15 08:24:06 83 74 675 483 526 -17.9 9.2e+14 2.1e+30 69 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/15 11:12:05 80 90 149 253 369 5.5*1 1.1e+15 1.2e+29 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/15 21:36:05 Halo 360 1476 1163 1327 -60.3 1.2e+16*2 1.4e+32*2 178 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/16 04:26:33 83 44 405 374 345 -2.8 3.8e+14 3.1e+29 92 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/16 17:36:05 148 23 569 830 1841 137.8*1 7.0e+12 1.1e+28 138 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/17 05:24:05 Halo 360 1228 987 1075 -43.6 6.3e+15*2 4.8e+31*2 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/17 10:12:06 69 29 424 330 149 -10.3*1 7.3e+13 6.5e+28 77 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/17 10:24:05 18 10 898 1108 2254 194.7*1 ---- ---- 20 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/17 16:24:05 287 36 239 269 455 6.7*1 3.4e+14 9.7e+28 286 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/07/17 19:12:05 112 8 728 695 482 -14.4*1 ---- ---- 116 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/17 21:12:10 125 34 315 585 1593 107.1*1 7.4e+13 3.7e+28 119 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/18 01:25:43 120 19 314 79 0 -89.8*1 ---- ---- 120 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/18 02:00:05 285 34 171 176 224 0.9*1 1.6e+14 2.3e+28 284 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/18 03:12:10 75 35 681 819 1158 43.4*1 2.0e+14 4.5e+29 86 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/18 06:12:05 68 17 388 438 527 6.9*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/18 11:12:05 286 30 207 185 0 -2.9*1 3.2e+14 6.8e+28 284 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/18 12:36:05 116 17 222 204 62 -2.2*1 ---- ---- 119 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/18 20:56:53 120 22 417 458 575 8.1*1 1.2e+14 1.1e+29 114 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/19 12:12:05 71 16 186 285 659 17.4*1 ---- ---- 76 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/19 14:00:05 101 22 249 407 1112 52.7*1 1.2e+14 3.8e+28 98 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/07/19 19:24:05 81 133 401 494 489 5.9*1 4.6e+15*2 3.7e+30*2 93 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Partial Halo
    2021/07/20 00:00:05 243 40 271 237 0 -6.7*1 1.9e+14 7.0e+28 231 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/20 16:36:05 72 107 873 758 799 -13.0 2.5e+15 9.4e+30 68 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/20 18:12:05 256 84 219 433 360 5.4 5.0e+15 1.2e+30 249 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/20 19:48:06 293 19 384 417 550 7.5*1 ---- ---- 284 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/21 11:48:05 257 19 318 336 364 1.8*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/21 21:24:07 263 118 228 303 311 3.0 1.8e+15 4.6e+29 268 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/22 14:24:05 261 17 286 355 552 10.8*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/22 20:24:05 92 51 199 227 373 4.5*1 2.8e+14 5.5e+28 99 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/23 03:12:10 253 12 270 349 443 6.6*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/23 21:24:05 91 44 88 65 0 -4.2*1 1.0e+15 4.0e+28 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/24 00:36:05 119 160 587 502 537 -6.9 4.5e+15*2 7.8e+30*2 114 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/07/24 09:36:05 96 76 283 285 286 0.1 6.6e+14 2.6e+29 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/24 14:36:05 103 68 201 304 491 9.7*1 8.9e+12 1.8e+27 104 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/07/25 05:48:05 266 83 299 222 0 -8.6*1 7.5e+14 3.4e+29 269 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/26 02:00:05 286 25 380 570 1261 64.1*1 9.1e+13 6.6e+28 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/26 04:24:05 102 13 260 415 967 37.8*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/07/26 16:48:05 148 79 316 338 384 2.5*1 3.0e+14 1.5e+29 140 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/26 21:12:10 273 81 558 596 586 3.0 3.4e+15 5.3e+30 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/27 03:12:11 99 81 274 199 0 -16.9*1 6.2e+13 2.3e+28 111 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/07/28 10:00:05 286 99 241 208 134 -2.4 1.7e+15 4.8e+29 292 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/07/28 10:48:05 103 66 340 428 503 7.6*1 1.2e+15 7.0e+29 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/28 12:00:05 39 100 69 79 136 0.6*1 2.2e+14 5.3e+27 35 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/07/28 16:24:05 272 60 186 216 293 2.5*1 2.2e+14 3.9e+28 291 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/29 10:48:05 289 56 291 371 602 13.2*1 8.7e+13 3.7e+28 285 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/07/30 06:36:03 131 8 291 667 2433 246.4*1 ---- ---- 128 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/07/30 08:12:05 257 69 209 324 511 10.3*1 6.7e+14 1.5e+29 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/31 10:36:05 77 50 129 301 295 3.9*1 2.1e+15 1.7e+29 81 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/07/31 17:12:05 248 101 170 200 201 0.8*1 3.4e+15 4.9e+29 243 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).