• 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
    2021/01/01 00:12:05 239 28 128 114 0 -4.7*1 ---- ---- 238 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/01 02:48:06 68 20 233 228 203 -0.7*1 ---- ---- 62 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/01 22:00:05 226 127 190 227 380 5.1*1 ---- ---- 237 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Partial Halo
    2021/01/02 11:36:05 237 155 395 361 321 -3.3*1 ---- ---- 250 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Partial Halo
    2021/01/02 13:36:21 118 79 136 154 335 4.1*1 ---- ---- 110 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/02 17:36:05 244 13 130 210 463 9.3*1 ---- ---- 245 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/02 23:24:05 257 67 246 248 254 0.2*1 ---- ---- 275 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/03 18:12:05 302 10 216 184 0 -12.3*1 ---- ---- 300 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/03 22:12:05 281 10 252 165 0 -7.9*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/04 07:48:05 92 32 252 233 0 -10.5*1 ---- ---- 98 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/04 13:25:41 271 41 182 184 215 0.6*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/05 11:36:05 265 15 249 306 575 13.4*1 ---- ---- 261 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/05 14:36:05 155 116 107 147 315 3.9*1 ---- ---- 161 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/06 04:00:05 294 114 397 599 563 11.1 ---- ---- 301 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/07 01:36:20 305 27 288 299 320 1.0*1 ---- ---- 302 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/07 07:36:05 302 11 346 611 1391 79.7*1 ---- ---- 299 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/07 11:00:05 301 26 449 355 0 -14.7*1 ---- ---- 297 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/07 18:36:05 287 11 281 398 562 12.4*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/08 00:12:05 110 12 174 231 317 4.0*1 ---- ---- 103 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/08 05:00:14 265 104 393 602 539 10.3 ---- ---- 248 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/08 10:24:05 179 6 439 654 2203 201.4*1 ---- ---- 178 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/08 18:48:05 263 87 194 354 348 5.2*1 ---- ---- 286 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/08 23:24:06 62 14 240 166 0 -21.2*1 ---- ---- 66 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/10 03:24:05 104 32 204 263 832 27.5*1 ---- ---- 100 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/10 07:00:05 233 13 331 424 477 7.1*1 ---- ---- 247 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/10 10:12:05 295 15 242 343 427 7.6*1 ---- ---- 290 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/10 22:36:05 277 14 313 401 631 16.7*1 ---- ---- 271 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/11 12:48:05 286 28 453 335 0 -32.1*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/12 15:48:06 283 18 317 596 2429 255.1*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/17 00:12:05 116 86 104 136 190 1.3*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/17 14:24:05 119 29 201 170 0 -5.0*1 ---- ---- 118 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/17 20:24:05 62 55 217 254 373 4.5*1 ---- ---- 73 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/18 02:40:10 57 59 309 349 379 3.0*1 ---- ---- 59 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/18 16:10:09 66 9 169 242 620 15.6*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/18 19:10:10 91 19 156 155 152 -0.1*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/18 20:40:09 316 10 221 199 0 -8.6*1 ---- ---- 311 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/19 03:40:10 91 13 244 282 335 2.9*1 ---- ---- 96 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/19 07:40:10 325 16 249 346 924 35.4*1 ---- ---- 316 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/20 04:48:06 69 20 242 192 0 -12.8*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/20 12:00:05 109 32 144 191 485 9.3*1 ---- ---- 107 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/20 14:00:05 93 120 125 228 296 3.6*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/20 18:36:06 258 57 270 547 576 13.9*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/21 14:12:05 133 28 268 313 579 11.8*1 ---- ---- 140 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/21 16:00:05 261 29 384 550 1054 44.9*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/21 20:36:05 253 17 310 431 756 22.8*1 ---- ---- 253 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/22 20:36:06 73 8 176 263 608 15.3*1 ---- ---- 73 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only C2
    2021/01/22 20:57:32 262 67 236 412 429 7.7 ---- ---- 261 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/23 10:12:05 115 15 432 514 1247 59.1*1 ---- ---- 113 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/23 18:48:05 100 70 472 507 596 6.7*1 ---- ---- 103 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/24 01:48:05 264 8 350 331 288 -2.5*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/24 02:24:05 177 6 420 303 0 -72.0*1 ---- ---- 178 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/24 13:25:43 114 9 327 385 1466 87.1*1 ---- ---- 113 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
    2021/01/25 02:36:05 80 23 210 263 654 16.6*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/25 22:24:05 287 27 121 167 427 7.5*1 ---- ---- 283 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event; Only C2
    2021/01/28 18:24:05 115 8 249 307 476 8.9*1 ---- ---- 105 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/28 23:36:05 115 11 300 272 135 -4.3*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Very Poor Event
    2021/01/29 09:12:11 282 28 162 190 297 2.9*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/29 13:25:42 276 34 213 243 299 2.3*1 ---- ---- 279 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/30 06:12:05 274 19 302 275 96 -4.0*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/30 10:24:05 95 78 387 252 0 -36.5*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/31 11:24:05 259 37 249 314 411 5.6*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30
    2021/01/31 17:36:05 247 15 249 311 412 6.1*1 ---- ---- 247 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event
    2021/01/31 22:12:05 58 68 180 198 260 1.8*1 ---- ---- 56 C2 C3 PHTX DST Java Movie Fixed the PA issue on 2026-01-30; Poor Event

    *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).