SOHO/LASCO CME Catalog

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

2020/09/02 01:36:16 93 49 76 26 0 -6.9^*1 ---- ---- 83 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/02 06:12:05 92 44 88 69 0 -1.7^*1 ---- ---- 90 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/03 00:12:06 97 48 263 276 399 4.1^*1 ---- ---- 88 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/03 04:24:05 105 25 118 146 287 3.2^*1 ---- ---- 105 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/03 07:24:05 85 14 187 253 422 7.0^*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/03 20:56:54 98 53 168 268 326 4.3^*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/04 07:12:05 257 31 108 121 179 1.0^*1 ---- ---- 253 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/04 07:48:05 170 9 355 93 0 -102.2^*1 ---- ---- 169 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/04 22:36:05 86 38 294 369 727 19.9^*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/05 05:48:05 265 67 297 344 357 2.7 ---- ---- 264 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/05 11:24:05 87 44 391 362 126 -6.6^*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/06 12:36:05 86 9 180 143 0 -7.4^*1 ---- ---- 84 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/07 07:00:05 94 16 177 241 375 5.5^*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/07 08:24:05 88 30 140 142 145 0.1^*1 ---- ---- 90 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/07 18:36:05 261 53 218 320 347 4.4^*1 1.8e+15 4.2e+29 265 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/07 21:24:05 275 63 184 388 370 5.8 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/08 12:48:05 85 50 219 203 0 -2.9^*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/08 15:31:47 270 53 285 327 335 2.2^*1 7.7e+12 3.1e+27 263 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/09 02:36:05 86 49 131 143 365 4.9^*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/09 16:24:05 260 16 397 396 396 -0.1^*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/10 05:36:05 273 10 439 387 0 -16.6^*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/11 02:00:05 339 10 256 276 614 13.4^*1 ---- ---- 338 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/09/11 18:24:05 279 10 249 396 1315 80.2^*1 ---- ---- 279 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/12 06:36:06 228 6 265 207 0 -42.4^*1 ---- ---- 236 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/13 12:24:05 277 41 73 53 0 -2.0^*1 2.9e+14 7.7e+27 272 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/14 12:36:05 93 27 111 134 347 4.7^*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/15 19:48:05 271 17 153 23 0 -23.1^*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/16 02:24:05 272 21 128 269 273 3.2^*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/16 08:48:05 79 18 192 252 549 11.8^*1 ---- ---- 84 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/17 01:36:15 274 10 231 299 477 8.9^*1 ---- ---- 275 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/17 12:36:05 19 11 308 347 740 19.7^*1 ---- ---- 21 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/18 07:12:06 262 6 188 185 55 -1.4^*1 ---- ---- 267 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/18 13:25:37 69 111 162 278 335 4.6^*1 ---- ---- 67 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30

2020/09/19 10:00:05 265 37 110 128 247 2.2^*1 ---- ---- 261 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/20 00:24:05 67 54 205 210 243 0.9^*1 ---- ---- 70 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/20 14:00:05 80 10 303 423 986 45.4^*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/20 21:48:06 263 26 161 239 297 3.5^*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/23 01:25:40 269 43 144 106 0 -13.0^*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/23 11:24:06 171 5 409 303 0 -83.0^*1 ---- ---- 169 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/27 22:36:05 246 13 255 321 802 25.5^*1 ---- ---- 256 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/28 00:48:05 76 25 219 249 412 6.2^*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/09/29 07:12:05 248 21 78 92 221 1.8^*1 ---- ---- 251 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/09/29 17:00:05 74 54 134 208 414 7.4^*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/30 08:00:06 46 24 578 404 0 -80.8^*1 ---- ---- 58 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/30 11:24:05 78 40 121 157 392 6.1^*1 ---- ---- 74 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/09/30 18:36:05 239 109 89 102 167 0.9^*1 ---- ---- 249 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/09/30 20:56:55 147 6 283 230 0 -63.6^*1 ---- ---- 146 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

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
2020/09/02	01:36:16	93	49	76	26	0	-6.9^*1	----	----	83	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/02	06:12:05	92	44	88	69	0	-1.7^*1	----	----	90	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/03	00:12:06	97	48	263	276	399	4.1^*1	----	----	88	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/03	04:24:05	105	25	118	146	287	3.2^*1	----	----	105	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/03	07:24:05	85	14	187	253	422	7.0^*1	----	----	89	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/03	20:56:54	98	53	168	268	326	4.3^*1	----	----	95	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/04	07:12:05	257	31	108	121	179	1.0^*1	----	----	253	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/04	07:48:05	170	9	355	93	0	-102.2^*1	----	----	169	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/04	22:36:05	86	38	294	369	727	19.9^*1	----	----	87	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/05	05:48:05	265	67	297	344	357	2.7	----	----	264	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/05	11:24:05	87	44	391	362	126	-6.6^*1	----	----	92	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/06	12:36:05	86	9	180	143	0	-7.4^*1	----	----	84	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/07	07:00:05	94	16	177	241	375	5.5^*1	----	----	95	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/07	08:24:05	88	30	140	142	145	0.1^*1	----	----	90	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/07	18:36:05	261	53	218	320	347	4.4^*1	1.8e+15	4.2e+29	265	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/07	21:24:05	275	63	184	388	370	5.8	----	----	272	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/08	12:48:05	85	50	219	203	0	-2.9^*1	----	----	87	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/08	15:31:47	270	53	285	327	335	2.2^*1	7.7e+12	3.1e+27	263	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/09	02:36:05	86	49	131	143	365	4.9^*1	----	----	99	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/09	16:24:05	260	16	397	396	396	-0.1^*1	----	----	266	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/10	05:36:05	273	10	439	387	0	-16.6^*1	----	----	270	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/11	02:00:05	339	10	256	276	614	13.4^*1	----	----	338	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/09/11	18:24:05	279	10	249	396	1315	80.2^*1	----	----	279	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/12	06:36:06	228	6	265	207	0	-42.4^*1	----	----	236	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/13	12:24:05	277	41	73	53	0	-2.0^*1	2.9e+14	7.7e+27	272	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/14	12:36:05	93	27	111	134	347	4.7^*1	----	----	92	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/15	19:48:05	271	17	153	23	0	-23.1^*1	----	----	272	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/16	02:24:05	272	21	128	269	273	3.2^*1	----	----	269	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/16	08:48:05	79	18	192	252	549	11.8^*1	----	----	84	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/17	01:36:15	274	10	231	299	477	8.9^*1	----	----	275	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/17	12:36:05	19	11	308	347	740	19.7^*1	----	----	21	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/18	07:12:06	262	6	188	185	55	-1.4^*1	----	----	267	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/18	13:25:37	69	111	162	278	335	4.6^*1	----	----	67	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30
2020/09/19	10:00:05	265	37	110	128	247	2.2^*1	----	----	261	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/20	00:24:05	67	54	205	210	243	0.9^*1	----	----	70	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/20	14:00:05	80	10	303	423	986	45.4^*1	----	----	85	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/20	21:48:06	263	26	161	239	297	3.5^*1	----	----	266	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/23	01:25:40	269	43	144	106	0	-13.0^*1	----	----	269	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/23	11:24:06	171	5	409	303	0	-83.0^*1	----	----	169	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/27	22:36:05	246	13	255	321	802	25.5^*1	----	----	256	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/28	00:48:05	76	25	219	249	412	6.2^*1	----	----	81	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/09/29	07:12:05	248	21	78	92	221	1.8^*1	----	----	251	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/09/29	17:00:05	74	54	134	208	414	7.4^*1	----	----	75	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/30	08:00:06	46	24	578	404	0	-80.8^*1	----	----	58	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/30	11:24:05	78	40	121	157	392	6.1^*1	----	----	74	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/09/30	18:36:05	239	109	89	102	167	0.9^*1	----	----	249	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/09/30	20:56:55	147	6	283	230	0	-63.6^*1	----	----	146	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; 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).