• 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
    2021/06/01 02:24:05 280 10 317 489 742 23.6*1 ---- ---- 276 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/01 05:36:05 350 7 276 345 1120 50.0*1 ---- ---- 348 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/01 12:48:05 350 9 415 230 0 -71.1*1 ---- ---- 346 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/02 15:05:48 262 119 186 228 240 1.7*1 ---- ---- 261 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/02 21:12:10 99 88 511 573 618 7.6*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/03 02:48:05 88 27 290 261 0 -7.2*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/03 13:25:44 84 60 250 222 0 -5.8*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/06/04 12:12:05 257 50 254 386 593 14.1*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/04 20:00:05 265 49 150 209 251 2.3*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/05 20:24:05 88 54 182 198 284 2.1*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/06 00:36:05 78 54 199 194 154 -0.7*1 ---- ---- 73 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/06/06 12:00:05 258 59 210 255 293 2.5*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/06 18:12:05 262 76 186 169 0 -1.7*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/08 15:12:09 232 26 526 360 0 -51.0*1 ---- ---- 239 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/09 01:25:44 89 83 109 205 247 2.5*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/09 09:36:07 8 11 436 643 1562 99.4*1 ---- ---- 16 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/09 10:36:05 281 39 86 115 449 8.3*1 ---- ---- 279 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/09 12:24:05 276 65 441 165 0 -29.4*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/09 22:24:05 286 36 398 309 0 -20.8*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/10 07:00:05 90 85 259 230 0 -4.7 ---- ---- 98 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/10 09:36:06 266 87 529 410 226 -15.1 ---- ---- 287 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/10 16:24:05 278 18 244 258 280 1.0*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/10 18:24:05 98 133 833 833 833 0.1 ---- ---- 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/06/11 12:00:05 86 82 151 148 111 -0.5*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/12 04:48:06 76 8 316 357 538 9.1*1 ---- ---- 88 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/06/12 05:48:05 287 22 320 474 1026 42.3*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/12 09:36:05 283 26 233 472 1148 54.9*1 ---- ---- 285 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/12 10:36:05 103 65 266 306 376 3.8*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/12 12:36:05 247 14 223 247 670 16.9*1 ---- ---- 247 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/06/12 13:36:15 95 39 360 386 478 4.8*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/12 17:36:05 105 24 318 542 797 25.9*1 ---- ---- 106 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/12 19:48:05 108 20 544 619 1110 42.3*1 ---- ---- 103 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/13 02:24:05 269 40 228 258 455 7.1*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/13 15:48:10 257 59 242 319 665 17.2*1 ---- ---- 247 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/14 00:12:06 86 19 175 226 440 8.0*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/06/14 12:24:05 229 17 242 191 0 -8.1*1 ---- ---- 234 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/14 16:24:05 225 32 135 144 159 0.4*1 ---- ---- 224 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/15 01:36:17 101 117 146 281 287 3.5*1 ---- ---- 100 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/16 00:12:05 100 52 85 86 98 0.1*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/16 18:24:05 276 21 253 276 646 15.3*1 ---- ---- 275 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/17 07:00:05 104 49 147 259 247 2.4 ---- ---- 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/17 11:36:05 188 11 272 166 0 -74.6*1 ---- ---- 184 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/17 14:00:06 228 8 199 297 878 32.3*1 ---- ---- 235 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/17 21:48:05 288 34 200 232 516 9.8*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/18 02:00:05 97 24 201 268 433 7.1*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/18 08:48:24 125 66 135 252 281 3.3*1 ---- ---- 119 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/19 20:24:06 271 74 124 216 228 2.2*1 ---- ---- 280 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/20 01:48:06 262 42 425 350 0 -42.9*1 ---- ---- 257 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/06/20 17:00:05 286 325 169 83 0 -19.5*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2; Partial Halo
    2021/06/21 12:00:07 275 11 219 216 193 -0.6*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/06/21 13:36:15 273 20 149 116 0 -6.5*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/22 03:12:09 267 42 392 330 106 -8.1*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/23 07:24:05 89 108 491 335 339 -12.1 ---- ---- 78 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/23 08:24:07 292 24 426 598 1020 40.0*1 ---- ---- 287 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/24 02:00:05 274 49 375 439 804 23.0*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Only C2
    2021/06/24 09:12:09 279 46 180 125 0 -19.6*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/24 17:36:06 265 58 767 570 97 -38.6*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/25 03:24:05 262 98 347 360 371 1.1 ---- ---- 257 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/25 10:36:05 258 56 236 167 0 -12.2*1 ---- ---- 244 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/25 14:12:05 260 90 433 340 335 -6.7 ---- ---- 257 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/26 00:48:05 249 30 101 219 503 10.7*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/26 16:00:05 312 13 293 258 0 -14.2*1 ---- ---- 299 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/06/26 22:12:05 270 42 366 362 349 -0.6*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/27 00:00:06 100 85 286 256 270 -1.0 ---- ---- 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/27 03:48:05 262 115 223 377 358 5.2 ---- ---- 273 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/27 20:00:06 271 81 325 358 365 2.0 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/27 20:12:06 98 25 207 223 353 3.7*1 ---- ---- 100 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/28 04:12:07 283 23 236 243 319 2.1*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/28 11:12:05 270 56 413 444 525 5.4*1 ---- ---- 275 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/28 12:48:06 275 89 502 415 396 -8.0 ---- ---- 265 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/28 17:24:05 285 20 432 397 188 -7.4*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/28 17:36:05 97 8 275 313 420 5.3*1 ---- ---- 97 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/28 19:48:05 301 162 951 1035 1000 10.0 ---- ---- 314 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/06/29 06:24:05 87 54 206 265 603 14.1*1 ---- ---- 98 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/06/29 18:24:05 263 57 629 691 747 10.1*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/06/30 14:12:06 267 28 363 424 425 4.1*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/06/30 17:48:05 69 58 41 95 216 2.0*1 ---- ---- 71 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).