• 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
    2019/03/01 04:38:45 158 15 389 370 0 -9.5*1 ---- ---- 153 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/01 12:36:05 266 59 300 290 276 -0.8*1 4.1e+14 1.9e+29 271 C2 C3 PHTX DST Java Movie
    2019/03/02 03:12:09 80 26 142 179 595 14.4*1 1.4e+13 1.4e+27 83 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/04 14:36:05 76 16 246 282 659 16.3*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/04 16:12:07 197 163 119 226 330 4.5*1 3.8e+14*2 2.7e+28*2 177 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2019/03/05 17:48:05 18 8 269 132 0 -75.3*1 ---- ---- 18 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/06 23:36:07 331 13 398 274 0 -115.1*1 ---- ---- 325 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/07 01:36:10 281 10 239 359 644 19.2*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Very Poor Event
    2019/03/08 04:17:40 300 104 239 248 298 1.5*1 6.4e+14 1.8e+29 292 C2 C3 PHTX DST Java Movie
    2019/03/08 04:38:50 90 74 294 462 737 21.9*1 1.1e+14 4.9e+28 91 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/08 20:00:05 102 63 215 286 395 5.6*1 7.2e+14 1.7e+29 104 C2 C3 PHTX DST Java Movie
    2019/03/09 05:36:05 257 14 258 381 893 32.2*1 ---- ---- 262 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/09 09:36:05 258 21 208 325 825 28.7*1 1.1e+13 2.4e+27 264 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/09 12:00:06 85 68 118 171 233 2.2*1 1.0e+15 7.3e+28 105 C3 PHTX DST Java Movie Poor Event
    2019/03/09 13:25:41 286 71 169 235 565 12.9*1 1.9e+14 2.7e+28 281 C3 PHTX DST Java Movie Only C2
    2019/03/10 00:12:05 92 59 171 245 466 9.8*1 7.4e+12 1.1e+27 90 C2 C3 PHTX DST Java Movie Very Poor Event
    2019/03/10 05:24:05 93 46 333 276 182 -5.2*1 6.2e+11 3.4e+26 109 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/11 22:12:06 210 12 506 158 0 -203.9*1 ---- ---- 216 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/12 10:48:05 72 132 234 274 341 3.3*1 1.1e+15*2 2.9e+29*2 115 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo
    2019/03/13 01:48:05 275 18 153 133 0 -2.0*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/13 04:48:05 92 35 94 121 265 2.8*1 1.6e+14 7.0e+27 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/13 06:24:05 282 42 185 120 0 -11.0*1 3.0e+13 5.1e+27 282 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/13 14:12:05 98 40 234 324 797 25.2*1 3.0e+12 8.1e+26 92 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/14 12:00:05 94 30 143 236 466 9.5*1 8.8e+12 9.0e+26 93 C2 C3 PHTX DST Java Movie Very Poor Event
    2019/03/15 02:24:05 358 6 244 238 0 -2.8*1 ---- ---- 360 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/15 03:12:10 216 4 156 0 0 -78.6*1 ---- ---- 222 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/15 03:24:05 87 22 231 280 333 3.5*1 3.4e+13 9.1e+27 93 C2 C3 PHTX DST Java Movie Very Poor Event
    2019/03/15 07:12:05 115 19 419 351 0 -37.4*1 ---- ---- 112 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/15 17:36:05 357 10 378 289 0 -86.9*1 ---- ---- 357 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/15 22:24:05 118 11 213 322 1063 46.8*1 ---- ---- 112 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/17 04:12:06 278 10 317 426 514 10.0*1 ---- ---- 271 C2 PHTX DST Java Movie Very Poor Event
    2019/03/18 18:36:05 278 28 210 242 487 8.4*1 1.4e+13 3.0e+27 277 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/20 06:48:05 105 23 197 108 0 -18.7*1 6.7e+13 1.3e+28 101 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/20 08:24:05 276 65 201 229 316 2.8*1 5.7e+14 1.2e+29 270 C2 C3 PHTX DST Java Movie
    2019/03/20 10:36:05 106 26 236 287 480 8.1*1 7.7e+13 2.2e+28 107 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/20 11:48:06 309 224 502 565 627 8.3 1.6e+15*2 2.0e+30*2 307 C2 C3 PHTX DST Java Movie Partial Halo
    2019/03/20 12:48:05 83 27 184 202 331 3.4*1 1.4e+14 2.4e+28 80 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/20 19:48:05 290 108 313 445 894 32.0*1 1.4e+14 6.9e+28 267 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/20 22:12:05 272 80 144 160 255 2.0*1 1.1e+14 1.1e+28 254 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/22 01:36:09 260 22 162 210 338 4.2*1 6.6e+13 8.6e+27 256 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/22 12:00:05 92 63 145 167 238 1.7*1 4.1e+14 4.3e+28 94 C2 C3 PHTX DST Java Movie Very Poor Event
    2019/03/23 00:12:05 175 8 243 0 0 -57.6*1 ---- ---- 176 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/23 04:24:05 260 35 185 142 0 -6.2*1 5.7e+13 9.8e+27 261 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/23 05:00:05 88 41 129 97 0 -4.4*1 4.3e+13 3.5e+27 92 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/23 19:36:05 265 45 265 284 401 4.7*1 1.4e+14 4.9e+28 262 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/24 06:48:07 260 56 154 111 0 -2.8*1 1.1e+15 1.3e+29 258 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/25 21:18:06 256 27 157 102 0 -10.0*1 1.2e+15 1.4e+29 260 C2 C3 PHTX DST Java Movie only C3, data gap; Very Poor Event; Only C3
    2019/03/26 00:12:06 270 16 129 117 0 -1.2*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Very Poor Event
    2019/03/26 14:36:05 290 14 441 336 0 -27.1*1 ---- ---- 275 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/26 18:12:05 253 17 185 194 386 4.8*1 ---- ---- 252 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/26 23:12:10 5 11 432 283 0 -207.0*1 ---- ---- 9 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2
    2019/03/27 04:48:07 252 39 233 269 430 6.1*1 2.7e+14 7.4e+28 256 C2 C3 PHTX DST Java Movie Poor Event
    2019/03/28 00:36:05 261 55 210 313 751 22.6*1 3.7e+13 8.3e+27 265 C2 C3 PHTX DST Java Movie Poor Event; Only C2
    2019/03/28 07:00:05 105 18 143 190 482 9.4*1 ---- ---- 103 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/29 05:12:06 67 22 67 39 0 -1.7*1 1.6e+14 3.6e+27 74 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/29 16:00:05 262 43 604 665 684 7.2 4.1e+14 7.5e+29 270 C2 C3 PHTX DST Java Movie
    2019/03/30 14:36:05 259 16 208 290 896 32.6*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2
    2019/03/31 14:36:05 3 5 285 587 2393 235.8*1 ---- ---- 7 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; 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).