• 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
    2021/05/01 00:12:05 102 12 322 417 863 29.2*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/01 00:48:05 233 14 555 634 919 26.4*1 ---- ---- 233 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/01 15:36:05 246 37 127 159 326 4.0*1 2.0e+14 1.6e+28 248 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/02 02:12:05 64 53 165 392 355 5.3 3.7e+15 5.1e+29 66 C2 C3 PHTX DST Java Movie
    2021/05/02 12:24:05 72 85 285 338 324 2.2*1 3.8e+15 1.5e+30 74 C2 C3 PHTX DST Java Movie
    2021/05/03 02:36:05 77 50 159 192 283 2.6*1 1.2e+14 1.5e+28 85 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/03 08:12:05 7 5 381 152 0 -133.1*1 ---- ---- 10 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/03 10:36:06 73 28 174 175 176 0.0*1 1.3e+13 2.0e+27 67 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/03 21:36:05 249 76 309 194 161 -6.0 1.6e+15 7.5e+29 247 C2 C3 PHTX DST Java Movie
    2021/05/04 07:00:05 62 51 183 186 213 0.5*1 1.0e+14 1.7e+28 69 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/04 11:48:05 67 26 126 75 0 -11.5*1 8.7e+13 6.9e+27 73 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/05 01:25:41 178 10 487 204 0 -273.9*1 ---- ---- 184 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/05 16:24:05 64 80 223 290 279 2.2*1 3.1e+15 7.7e+29 63 C2 C3 PHTX DST Java Movie
    2021/05/05 23:12:10 70 56 264 284 314 1.6*1 7.8e+14 2.7e+29 64 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/06 21:12:09 112 55 382 436 798 22.2*1 1.8e+14 1.3e+29 98 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/07 01:25:43 60 58 436 250 0 -36.3*1 9.2e+14 8.7e+29 78 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/07 04:17:43 67 49 485 407 0 -18.4*1 6.8e+13 8.0e+28 76 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/07 07:24:12 81 26 410 448 806 21.2*1 1.6e+13 1.4e+28 73 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/07 12:00:05 50 34 247 321 810 26.1*1 2.0e+13 6.1e+27 54 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/07 13:36:16 106 14 346 299 0 -17.2*1 ---- ---- 105 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/07 19:24:05 76 114 754 647 712 -10.0 4.0e+15 1.1e+31 67 C2 C3 PHTX DST Java Movie
    2021/05/08 13:25:42 335 6 737 378 0 -539.1*1 ---- ---- 335 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2021/05/09 12:00:05 326 284 266 250 167 -2.4*1 2.5e+14*2 9.0e+28*2 252 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2021/05/09 12:48:05 63 13 330 347 403 2.9*1 ---- ---- 68 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/09 15:05:52 51 90 603 610 607 0.6 3.7e+15 6.8e+30 65 C2 C3 PHTX DST Java Movie
    2021/05/10 15:12:10 49 35 274 354 540 11.0*1 9.0e+12 3.4e+27 60 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/10 20:56:53 65 48 264 266 282 0.5*1 1.7e+14 6.0e+28 74 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/11 00:36:05 281 7 269 295 500 7.8*1 ---- ---- 275 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/11 18:00:05 261 7 208 203 0 -2.6*1 ---- ---- 257 C2 C3 PHTX DST Java Movie 0.5; Very Poor Event; Only C2
    2021/05/11 23:12:12 271 11 167 155 0 -4.7*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/13 01:48:05 87 7 276 334 697 21.1*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/13 09:12:09 90 13 198 238 355 4.6*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/13 13:36:16 260 18 246 231 0 -5.8*1 ---- ---- 259 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/13 13:48:05 91 96 116 81 0 -4.7*1 1.8e+14 1.2e+28 102 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/13 15:36:05 204 44 222 290 417 6.3*1 5.3e+13 1.3e+28 207 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/13 19:36:05 354 140 204 263 473 8.4*1 2.4e+14*2 5.0e+28*2 24 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2021/05/15 17:00:05 264 41 94 80 0 -1.2*1 2.1e+14 9.4e+27 266 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/16 03:48:05 65 58 212 192 0 -3.6*1 3.3e+14 7.4e+28 82 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/16 05:48:05 72 58 208 124 0 -14.2*1 1.6e+14 3.4e+28 78 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/17 09:36:05 49 8 462 373 0 -61.4*1 ---- ---- 53 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/17 20:00:06 82 61 190 172 0 -5.8*1 4.2e+13 7.5e+27 85 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/17 23:12:11 76 51 136 155 295 3.0*1 4.8e+13 4.4e+27 81 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/18 02:48:05 80 60 302 383 722 19.9*1 2.0e+14 9.1e+28 95 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/18 06:36:07 86 43 257 271 393 3.9*1 6.1e+13 2.0e+28 86 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/18 09:12:09 87 36 242 246 281 0.9*1 9.8e+13 2.9e+28 88 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/19 03:48:05 248 48 274 395 1066 45.9*1 1.0e+14 3.7e+28 261 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/19 16:00:06 257 26 227 253 493 8.3*1 2.2e+13 5.7e+27 258 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/19 17:48:05 257 32 255 251 192 -1.3*1 9.7e+13 3.2e+28 259 C2 C3 PHTX DST Java Movie Only C2
    2021/05/19 18:24:05 77 62 176 230 334 3.9*1 4.6e+14 7.2e+28 78 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/20 01:25:42 253 38 195 140 0 -12.7*1 7.6e+13 1.4e+28 258 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/20 11:48:05 82 53 77 11 0 -4.3*1 2.0e+14 5.9e+27 76 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/20 13:36:14 260 58 176 116 0 -13.3*1 5.5e+13 8.6e+27 258 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/20 18:12:05 88 76 222 380 404 6.2*1 1.4e+14 3.5e+28 87 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/21 09:36:06 88 72 380 484 955 34.5*1 1.0e+14 7.3e+28 72 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/21 15:48:06 273 95 220 425 372 5.7 5.3e+15 1.3e+30 282 C2 C3 PHTX DST Java Movie
    2021/05/22 04:00:05 81 79 366 603 1430 84.2*1 8.1e+13 5.5e+28 80 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/22 07:36:06 87 78 412 619 1312 68.9*1 5.5e+14 4.7e+29 80 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2021/05/22 08:48:05 Halo 360 381 434 413 2.5 1.8e+15*2 1.3e+30*2 80 C2 C3 PHTX DST Java Movie
    2021/05/22 22:12:05 268 149 459 472 480 1.3*1 6.9e+14*2 7.3e+29*2 293 C2 C3 PHTX DST Java Movie Partial Halo
    2021/05/23 10:12:05 269 121 392 370 302 -3.2*1 6.6e+14*2 5.1e+29*2 261 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2021/05/23 11:48:05 256 138 384 267 245 -7.6*1 8.1e+14*2 6.0e+29*2 273 C2 C3 PHTX DST Java Movie Partial Halo
    2021/05/23 17:24:06 201 8 518 252 0 -173.0*1 ---- ---- 203 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/24 01:25:43 261 60 437 479 582 7.7*1 1.8e+14 1.7e+29 266 C2 C3 PHTX DST Java Movie
    2021/05/24 05:36:05 104 56 148 161 267 2.2*1 1.5e+14 1.7e+28 102 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/24 14:36:05 261 95 129 266 288 3.5*1 1.6e+15 1.3e+29 265 C2 C3 PHTX DST Java Movie
    2021/05/25 11:36:05 76 37 320 445 920 34.4*1 4.0e+13 2.1e+28 77 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/25 18:36:05 238 86 394 663 554 11.1 2.5e+15 1.9e+30 231 C2 C3 PHTX DST Java Movie
    2021/05/27 04:48:05 84 93 330 272 74 -6.0*1 2.8e+14 1.5e+29 87 C2 C3 PHTX DST Java Movie
    2021/05/27 15:48:05 251 73 119 98 0 -3.6*1 3.9e+14 2.7e+28 266 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/28 00:00:05 236 18 357 283 0 -12.1*1 ---- ---- 244 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/28 14:48:06 99 12 345 500 976 38.1*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Poor Event
    2021/05/28 23:12:12 245 197 971 974 974 0.5 6.9e+15*2 3.3e+31*2 264 C2 C3 PHTX DST Java Movie Partial Halo
    2021/05/29 00:12:06 90 80 415 427 455 1.9*1 3.7e+14 3.2e+29 92 C2 C3 PHTX DST Java Movie Very Poor Event
    2021/05/30 02:48:07 68 40 145 198 446 7.9*1 2.9e+14 3.1e+28 74 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/30 06:24:06 74 24 130 86 0 -7.3*1 4.5e+13 3.8e+27 78 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/30 17:00:35 309 8 421 398 0 -21.3*1 ---- ---- 304 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2021/05/31 07:12:05 61 12 226 288 552 12.7*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Very 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).