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

2020/02/04 02:24:06 172 8 731 726 676 -3.5^*1 ---- ---- 176 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/04 18:00:06 266 32 280 352 644 15.6^*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/02/04 19:36:05 267 33 267 282 417 4.6^*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/04 22:36:06 346 5 366 525 1616 104.2^*1 ---- ---- 345 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/06 22:36:06 86 24 86 81 0 -0.4^*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/02/07 03:47:16 231 10 307 677 2578 283.8^*1 ---- ---- 234 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/08 09:12:11 212 5 374 296 0 -108.4^*1 ---- ---- 215 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/09 03:48:05 273 8 255 288 580 12.9^*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/09 07:48:06 270 14 130 134 217 1.5^*1 ---- ---- 269 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/10 10:24:05 96 47 196 146 0 -10.3^*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/10 13:48:05 249 17 225 139 0 -27.0^*1 ---- ---- 252 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/10 18:00:05 247 12 121 24 0 -201.3^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/11 15:48:06 85 55 121 138 169 0.7^*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/02/11 17:15:10 272 46 125 105 0 -6.9^*1 ---- ---- 275 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/11 22:36:06 196 4 240 270 729 19.8^*1 ---- ---- 200 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/13 00:48:05 183 7 402 268 0 -87.7^*1 ---- ---- 183 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/13 21:12:09 8 5 523 462 0 -85.1^*1 ---- ---- 10 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/14 07:12:05 8 5 706 --- --- --- ---- ---- 12 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 2 points; Only C2

2020/02/15 08:36:05 82 41 148 234 256 2.5^*1 ---- ---- 82 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/02/16 12:00:05 84 15 97 136 308 3.8^*1 ---- ---- 88 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/16 16:00:05 12 8 290 203 0 -80.3^*1 ---- ---- 18 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/16 18:36:05 93 19 81 54 0 -5.3^*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/16 20:56:55 249 9 94 92 14 -0.4^*1 ---- ---- 251 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/17 05:36:05 109 17 343 377 754 19.7^*1 ---- ---- 106 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/17 08:36:05 251 27 127 111 0 -3.6^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/17 11:12:05 256 40 237 240 262 0.6^*1 ---- ---- 247 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/02/18 03:12:11 82 19 64 134 260 2.9^*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/02/18 20:12:05 91 29 193 236 307 3.1^*1 ---- ---- 83 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/02/19 07:24:05 170 7 469 478 730 13.4^*1 ---- ---- 169 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/22 11:48:06 268 41 141 98 0 -6.0^*1 ---- ---- 273 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/22 19:48:05 266 23 158 51 0 -90.1^*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/22 21:48:05 85 33 177 197 367 4.5^*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/02/23 02:12:05 265 23 171 182 368 4.6^*1 ---- ---- 264 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/02/24 05:12:05 234 7 251 309 1404 80.0^*1 ---- ---- 238 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/25 02:24:05 185 4 319 532 2681 295.4^*1 ---- ---- 183 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/02/27 09:12:09 266 30 192 229 232 1.2^*1 ---- ---- 270 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/02/29 10:12:05 91 55 134 184 189 1.2^*1 ---- ---- 96 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

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
2020/02/04	02:24:06	172	8	731	726	676	-3.5^*1	----	----	176	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/04	18:00:06	266	32	280	352	644	15.6^*1	----	----	270	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/02/04	19:36:05	267	33	267	282	417	4.6^*1	----	----	269	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/04	22:36:06	346	5	366	525	1616	104.2^*1	----	----	345	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/06	22:36:06	86	24	86	81	0	-0.4^*1	----	----	85	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/02/07	03:47:16	231	10	307	677	2578	283.8^*1	----	----	234	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/08	09:12:11	212	5	374	296	0	-108.4^*1	----	----	215	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/09	03:48:05	273	8	255	288	580	12.9^*1	----	----	277	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/09	07:48:06	270	14	130	134	217	1.5^*1	----	----	269	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/10	10:24:05	96	47	196	146	0	-10.3^*1	----	----	92	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/10	13:48:05	249	17	225	139	0	-27.0^*1	----	----	252	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/10	18:00:05	247	12	121	24	0	-201.3^*1	----	----	248	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/11	15:48:06	85	55	121	138	169	0.7^*1	----	----	92	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/02/11	17:15:10	272	46	125	105	0	-6.9^*1	----	----	275	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/11	22:36:06	196	4	240	270	729	19.8^*1	----	----	200	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/13	00:48:05	183	7	402	268	0	-87.7^*1	----	----	183	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/13	21:12:09	8	5	523	462	0	-85.1^*1	----	----	10	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/14	07:12:05	8	5	706	---	---	---	----	----	12	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 2 points; Only C2
2020/02/15	08:36:05	82	41	148	234	256	2.5^*1	----	----	82	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/02/16	12:00:05	84	15	97	136	308	3.8^*1	----	----	88	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/16	16:00:05	12	8	290	203	0	-80.3^*1	----	----	18	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/16	18:36:05	93	19	81	54	0	-5.3^*1	----	----	89	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/16	20:56:55	249	9	94	92	14	-0.4^*1	----	----	251	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/17	05:36:05	109	17	343	377	754	19.7^*1	----	----	106	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/17	08:36:05	251	27	127	111	0	-3.6^*1	----	----	248	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/17	11:12:05	256	40	237	240	262	0.6^*1	----	----	247	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/02/18	03:12:11	82	19	64	134	260	2.9^*1	----	----	87	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/02/18	20:12:05	91	29	193	236	307	3.1^*1	----	----	83	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/02/19	07:24:05	170	7	469	478	730	13.4^*1	----	----	169	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/22	11:48:06	268	41	141	98	0	-6.0^*1	----	----	273	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/22	19:48:05	266	23	158	51	0	-90.1^*1	----	----	266	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/22	21:48:05	85	33	177	197	367	4.5^*1	----	----	89	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/02/23	02:12:05	265	23	171	182	368	4.6^*1	----	----	264	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/02/24	05:12:05	234	7	251	309	1404	80.0^*1	----	----	238	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/25	02:24:05	185	4	319	532	2681	295.4^*1	----	----	183	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/02/27	09:12:09	266	30	192	229	232	1.2^*1	----	----	270	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/02/29	10:12:05	91	55	134	184	189	1.2^*1	----	----	96	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle 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).