• 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
    2021/10/01 01:36:19 276 17 232 333 429 6.9*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/10/01 02:00:05 359 9 251 156 0 -42.1*1 ---- ---- 0 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/01 03:24:05 60 24 254 315 404 5.5*1 ---- ---- 66 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/10/01 10:24:05 272 36 171 144 0 -6.0*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/01 18:48:07 241 175 254 430 401 6.3*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/10/02 14:00:05 257 80 964 1124 1115 24.3 ---- ---- 232 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/02 18:12:05 263 86 379 366 370 -0.7*1 ---- ---- 271 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/02 22:36:06 243 58 527 589 653 9.4*1 ---- ---- 251 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/03 01:48:05 104 34 230 399 1049 45.3*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/04 00:48:07 262 18 126 235 296 3.7*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/04 02:24:05 53 50 175 326 893 33.3*1 ---- ---- 45 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/04 08:12:05 34 6 417 380 0 -33.6*1 ---- ---- 38 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/04 08:48:05 45 13 633 591 0 -23.1*1 ---- ---- 52 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/04 16:48:05 230 9 277 255 0 -12.4*1 ---- ---- 238 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/04 22:24:05 95 79 275 351 362 3.7*1 ---- ---- 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/05 13:36:06 67 7 297 387 536 11.1*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/10/06 02:12:05 176 50 227 235 357 3.3*1 ---- ---- 186 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/07 02:00:07 258 206 299 665 866 31.6*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Partial Halo
    2021/10/07 14:24:06 262 59 456 456 458 0.1*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/07 19:24:05 278 26 276 400 892 31.7*1 ---- ---- 281 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/08 16:13:57 111 38 627 594 268 -16.2*1 ---- ---- 107 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/08 19:48:05 264 65 222 249 561 11.4*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/08 22:36:05 54 32 128 346 505 10.6*1 ---- ---- 65 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/10/09 04:24:05 265 42 235 275 571 11.9*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/09 06:36:05 249 55 84 107 151 0.8*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/09 07:12:05 Halo 360 712 611 650 -9.8 ---- ---- 258 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/09 10:00:05 114 13 698 563 0 -95.5*1 ---- ---- 111 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/09 22:36:05 269 110 433 501 500 4.8 ---- ---- 265 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/10 01:25:22 127 14 328 133 0 -69.6*1 ---- ---- 122 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/10 03:12:09 179 5 475 802 3289 455.3*1 ---- ---- 177 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/10/10 05:12:06 292 22 307 379 813 25.4*1 ---- ---- 291 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/10 10:12:05 262 15 198 237 262 1.8*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/10 23:12:05 60 31 337 354 378 1.7*1 ---- ---- 56 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/10 23:24:05 287 71 299 203 0 -8.5*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/11 02:48:05 281 64 300 349 340 2.2*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/11 15:12:09 79 46 528 566 661 8.2*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/11 23:24:05 281 13 260 393 698 19.6*1 ---- ---- 279 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/12 03:12:10 247 162 380 345 199 -5.5*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/10/12 12:48:05 123 30 371 356 216 -4.3*1 ---- ---- 130 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/13 02:24:05 287 56 227 225 219 -0.2*1 ---- ---- 285 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/13 11:00:06 260 102 730 709 712 -2.2 ---- ---- 273 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/13 22:36:06 277 30 345 362 405 2.3*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/13 23:12:05 147 8 947 907 0 -55.5*1 ---- ---- 141 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only 3 points; Only C2
    2021/10/14 03:36:05 277 27 305 280 137 -3.7*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/15 04:13:08 288 181 495 554 569 5.7 ---- ---- 303 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/10/15 20:12:06 289 34 309 454 1007 41.1*1 ---- ---- 288 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/16 08:48:05 89 48 202 160 0 -10.4*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/16 13:25:43 89 56 237 200 0 -6.2*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/16 14:48:05 106 121 710 1191 1326 69.9 ---- ---- 137 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/10/16 23:12:12 270 77 363 341 274 -3.2*1 ---- ---- 281 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/17 09:12:11 332 44 262 339 769 23.7*1 ---- ---- 321 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/17 18:36:05 92 84 128 225 385 6.1*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/18 06:36:05 268 82 370 335 285 -3.4*1 ---- ---- 287 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/18 13:25:43 4 7 566 1080 2564 277.3*1 ---- ---- 5 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/10/18 18:12:05 282 30 198 284 427 7.2*1 ---- ---- 285 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/19 00:48:05 96 47 113 243 235 2.5*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/19 04:24:06 6 10 262 173 0 -87.7*1 ---- ---- 5 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/19 05:00:05 263 56 269 305 323 2.0*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/20 21:36:05 336 67 234 227 205 -0.7*1 ---- ---- 322 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/10/20 23:36:06 189 10 352 533 1434 83.3*1 ---- ---- 194 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/21 00:36:06 195 11 283 258 0 -12.5*1 ---- ---- 196 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/21 02:24:05 196 6 315 339 645 13.6*1 ---- ---- 197 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/21 05:48:06 198 10 507 668 1906 147.4*1 ---- ---- 197 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/21 06:24:05 114 71 209 394 1175 56.8*1 ---- ---- 107 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/21 10:12:05 112 73 243 288 538 10.2*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/21 10:48:05 297 15 378 266 0 -21.3*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/10/21 15:48:10 106 89 218 206 43 -2.1*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/21 23:36:05 180 8 439 381 0 -53.7*1 ---- ---- 179 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/10/22 02:48:03 84 95 387 459 445 3.9 ---- ---- 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/22 09:22:51 86 102 204 193 156 -0.9*1 ---- ---- 83 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/22 09:33:45 257 114 96 156 241 2.3*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/22 18:00:05 93 104 516 554 553 3.1 ---- ---- 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/22 21:36:05 88 116 360 422 405 3.0 ---- ---- 90 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/23 11:00:05 92 161 358 247 242 -6.4 ---- ---- 91 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/10/24 00:12:05 107 48 287 299 374 2.7*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/24 01:48:06 290 17 195 310 748 22.9*1 ---- ---- 292 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/10/24 10:12:06 72 39 189 173 85 -1.4*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/24 16:36:05 68 84 196 185 147 -0.9*1 ---- ---- 72 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/25 01:25:45 201 5 983 1142 2522 239.5*1 ---- ---- 205 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/10/25 08:48:05 Halo 360 245 336 465 7.8*1 ---- ---- 132 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/25 20:57:30 83 114 298 131 0 -99.4 ---- ---- 63 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/10/26 10:24:06 72 38 409 444 443 2.3 ---- ---- 75 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/26 12:36:05 108 25 360 334 164 -5.0*1 ---- ---- 113 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/26 19:48:05 132 86 276 325 363 3.3*1 ---- ---- 143 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/27 03:36:05 108 110 390 660 606 14.1 ---- ---- 123 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/27 15:37:33 288 13 250 244 233 -0.5*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/10/28 13:25:45 304 91 420 609 586 11.5 ---- ---- 298 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/28 15:48:05 Halo 360 1519 1240 1342 -61.1 ---- ---- 180 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/29 19:00:05 234 55 1005 1135 1125 21.2 ---- ---- 225 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/10/31 08:12:07 127 157 366 513 488 7.8*1 ---- ---- 102 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/10/31 21:24:05 284 51 373 376 398 0.9*1 ---- ---- 287 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).