• 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 01:36:19 280 17 232 333 429 6.9*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/10/01 02:00:05 3 9 251 156 0 -42.1*1 ---- ---- 5 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/01 03:24:05 65 24 254 315 404 5.5*1 7.5e+13 2.4e+28 71 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/10/01 10:24:05 276 36 171 144 0 -6.0*1 2.2e+14 3.2e+28 271 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/01 18:48:07 246 175 254 430 401 6.3*1 7.5e+15*2 2.4e+30*2 274 C2 C3 PHTX DST Java Movie Partial Halo
    2021/10/02 14:00:05 262 80 964 1124 1115 24.3 1.7e+15 8.0e+30 238 C2 C3 PHTX DST Java Movie
    2021/10/02 18:12:05 267 86 379 366 370 -0.7*1 3.4e+14 2.5e+29 277 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/02 22:36:06 248 58 527 589 653 9.4*1 4.5e+14 6.3e+29 257 C2 C3 PHTX DST Java Movie
    2021/10/03 01:48:05 109 34 230 399 1049 45.3*1 1.3e+14 3.3e+28 107 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/04 00:48:07 267 18 126 235 296 3.7*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/04 02:24:05 58 50 175 326 893 33.3*1 5.8e+13 8.9e+27 51 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/04 08:12:05 39 6 417 380 0 -33.6*1 ---- ---- 43 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/04 08:48:05 50 13 633 591 0 -23.1*1 ---- ---- 58 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/04 16:48:05 235 9 277 255 0 -12.4*1 ---- ---- 243 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/04 22:24:05 100 79 275 351 362 3.7*1 2.1e+14 7.8e+28 103 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/05 13:36:06 73 7 297 387 536 11.1*1 ---- ---- 82 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/10/06 02:12:05 182 50 227 235 357 3.3*1 1.9e+13 4.9e+27 191 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/07 02:00:07 264 206 299 665 866 31.6*1 1.1e+15*2 4.8e+29*2 262 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2021/10/07 14:24:06 268 59 456 456 458 0.1*1 9.2e+13 9.5e+28 265 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/07 19:24:05 284 26 276 400 892 31.7*1 1.0e+14 3.9e+28 287 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/08 16:13:57 117 38 627 594 268 -16.2*1 1.3e+14 2.5e+29 113 C2 C3 PHTX DST Java Movie
    2021/10/08 19:48:05 270 65 222 249 561 11.4*1 7.3e+13 1.8e+28 266 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/08 22:36:05 61 32 128 346 505 10.6*1 2.0e+14 1.7e+28 71 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/10/09 04:24:05 271 42 235 275 571 11.9*1 7.9e+13 2.2e+28 272 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/09 06:36:05 255 55 84 107 151 0.8*1 5.9e+14 2.1e+28 261 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/09 07:12:05 Halo 360 712 611 650 -9.8 3.0e+15*2 7.7e+30*2 265 C2 C3 PHTX DST Java Movie
    2021/10/09 10:00:05 120 13 698 563 0 -95.5*1 ---- ---- 118 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/09 22:36:05 275 110 433 501 500 4.8 5.1e+15 4.8e+30 273 C2 C3 PHTX DST Java Movie
    2021/10/10 01:25:22 133 14 328 133 0 -69.6*1 ---- ---- 129 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/10 03:12:09 185 5 475 802 3289 455.3*1 ---- ---- 184 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2021/10/10 05:12:06 299 22 307 379 813 25.4*1 5.5e+13 2.6e+28 298 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/10 10:12:05 269 15 198 237 262 1.8*1 ---- ---- 267 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/10 23:12:05 67 31 337 354 378 1.7*1 2.1e+14 1.2e+29 63 C2 C3 PHTX DST Java Movie
    2021/10/10 23:24:05 293 71 299 203 0 -8.5*1 1.0e+15 4.5e+29 297 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/11 02:48:05 288 64 300 349 340 2.2*1 5.9e+14 2.6e+29 291 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/11 15:12:09 86 46 528 566 661 8.2*1 2.5e+14 3.4e+29 95 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/11 23:24:05 288 13 260 393 698 19.6*1 ---- ---- 286 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/12 03:12:10 254 162 380 345 199 -5.5*1 8.8e+14*2 6.4e+29*2 284 C2 C3 PHTX DST Java Movie Partial Halo
    2021/10/12 12:48:05 130 30 371 356 216 -4.3*1 6.2e+13 4.3e+28 137 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/13 02:24:05 294 56 227 225 219 -0.2*1 5.9e+14 1.5e+29 293 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/13 11:00:06 267 102 730 709 712 -2.2 1.7e+15 4.6e+30 281 C2 C3 PHTX DST Java Movie
    2021/10/13 22:36:06 284 30 345 362 405 2.3*1 2.7e+14 1.6e+29 281 C2 C3 PHTX DST Java Movie
    2021/10/13 23:12:05 154 8 947 907 0 -55.5*1 ---- ---- 148 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2
    2021/10/14 03:36:05 284 27 305 280 137 -3.7*1 4.3e+14 2.0e+29 282 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/15 04:13:08 296 181 495 554 569 5.7 3.0e+15*2 3.7e+30*2 312 C2 C3 PHTX DST Java Movie Partial Halo
    2021/10/15 20:12:06 297 34 309 454 1007 41.1*1 2.0e+14 9.5e+28 296 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/16 08:48:05 97 48 202 160 0 -10.4*1 3.5e+13 7.1e+27 94 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/16 13:25:43 97 56 237 200 0 -6.2*1 4.3e+14 1.2e+29 97 C2 C3 PHTX DST Java Movie
    2021/10/16 14:48:05 113 121 710 1191 1326 69.9 3.6e+15*2 9.1e+30*2 145 C2 C3 PHTX DST Java Movie Partial Halo
    2021/10/16 23:12:12 278 77 363 341 274 -3.2*1 8.3e+14 5.5e+29 289 C2 C3 PHTX DST Java Movie
    2021/10/17 09:12:11 339 43 262 339 769 23.7*1 2.0e+13 6.9e+27 328 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/17 18:36:05 100 84 128 225 385 6.1*1 4.5e+13 3.7e+27 100 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/18 06:36:05 276 82 370 335 285 -3.4*1 1.3e+15 8.8e+29 297 C2 C3 PHTX DST Java Movie
    2021/10/18 13:25:43 12 7 566 1080 2564 277.3*1 ---- ---- 13 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2021/10/18 18:12:05 291 30 198 284 427 7.2*1 3.1e+14 6.1e+28 293 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/19 00:48:05 104 47 113 243 235 2.5*1 1.7e+15 1.1e+29 98 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/19 04:24:06 14 10 262 173 0 -87.7*1 ---- ---- 14 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/19 05:00:05 271 56 269 305 323 2.0*1 8.3e+14 3.0e+29 269 C2 C3 PHTX DST Java Movie
    2021/10/20 21:36:05 345 67 234 227 205 -0.7*1 9.4e+12 2.6e+27 332 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/10/20 23:36:06 198 10 352 533 1434 83.3*1 ---- ---- 203 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/21 00:36:06 204 11 283 258 0 -12.5*1 ---- ---- 205 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/21 02:24:05 204 6 315 339 645 13.6*1 ---- ---- 205 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/21 05:48:06 206 10 507 668 1906 147.4*1 ---- ---- 206 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/21 06:24:05 123 71 209 394 1175 56.8*1 3.3e+13 7.2e+27 116 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/21 10:12:05 120 73 243 288 538 10.2*1 1.3e+14 3.9e+28 112 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/21 10:48:05 306 15 378 266 0 -21.3*1 ---- ---- 298 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/10/21 15:48:10 115 89 218 206 43 -2.1*1 3.3e+14 7.8e+28 123 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/21 23:36:05 189 8 439 381 0 -53.7*1 ---- ---- 188 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/10/22 02:48:03 93 95 387 459 445 3.9 3.1e+15 2.3e+30 88 C2 C3 PHTX DST Java Movie
    2021/10/22 09:22:51 95 102 204 193 156 -0.9*1 5.5e+14 1.2e+29 93 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/22 09:33:45 265 114 96 156 241 2.3*1 6.9e+14 3.2e+28 264 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/22 18:00:05 102 104 516 554 553 3.1 1.6e+15 2.1e+30 89 C2 C3 PHTX DST Java Movie
    2021/10/22 21:36:05 97 116 360 422 405 3.0 1.5e+15 9.8e+29 101 C2 C3 PHTX DST Java Movie
    2021/10/23 11:00:05 101 161 358 247 242 -6.4 2.3e+15*2 1.4e+30*2 102 C2 C3 PHTX DST Java Movie Partial Halo
    2021/10/24 00:12:05 117 48 287 299 374 2.7*1 7.3e+12 3.0e+27 119 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/24 01:48:06 299 17 195 310 748 22.9*1 ---- ---- 301 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/10/24 10:12:06 81 39 189 173 85 -1.4*1 3.6e+14 6.4e+28 91 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/24 16:36:05 78 84 196 185 147 -0.9*1 4.3e+14 8.2e+28 82 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/25 01:25:45 211 5 983 1142 2522 239.5*1 ---- ---- 214 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2021/10/25 08:48:05 Halo 360 245 336 465 7.8*1 2.0e+15*2 6.1e+29*2 142 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/25 20:57:30 92 114 298 131 0 -99.4 1.1e+15 5.0e+29 72 C2 C3 PHTX DST Java Movie Only C2
    2021/10/26 10:24:06 81 38 409 444 443 2.3 6.1e+14 5.1e+29 86 C2 C3 PHTX DST Java Movie
    2021/10/26 12:36:05 118 25 360 334 164 -5.0*1 2.1e+14 1.4e+29 123 C2 C3 PHTX DST Java Movie
    2021/10/26 19:48:05 142 86 276 325 363 3.3*1 9.0e+14 3.4e+29 153 C2 C3 PHTX DST Java Movie
    2021/10/27 03:36:05 117 110 390 660 606 14.1 3.7e+15 2.8e+30 133 C2 C3 PHTX DST Java Movie
    2021/10/27 15:37:33 298 13 250 244 233 -0.5*1 ---- ---- 292 C2 C3 PHTX DST Java Movie Poor Event
    2021/10/28 13:25:45 314 91 420 609 586 11.5 8.2e+15 7.3e+30 309 C2 C3 PHTX DST Java Movie
    2021/10/28 15:48:05 Halo 360 1519 1240 1342 -61.1 2.9e+16*2 3.3e+32*2 191 C2 C3 PHTX DST Java Movie
    2021/10/29 19:00:05 245 54 1005 1135 1125 21.2 1.6e+15 8.3e+30 236 C2 C3 PHTX DST Java Movie
    2021/10/31 08:12:07 137 157 366 513 488 7.8*1 7.0e+15*2 4.7e+30*2 114 C2 C3 PHTX DST Java Movie Partial Halo
    2021/10/31 21:24:05 294 51 373 376 398 0.9*1 1.4e+14 9.8e+28 298 C2 C3 PHTX DST Java Movie 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).