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

2020/01/01 01:25:40 107 17 136 124 0 -1.7^*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/01 09:12:09 113 59 214 235 254 1.1^*1 ---- ---- 108 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/02 12:36:05 1 9 379 577 1606 104.8^*1 ---- ---- 3 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/03 06:24:07 250 10 173 238 771 24.1^*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/03 08:24:05 168 4 444 309 0 -93.0^*1 ---- ---- 166 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/01/03 08:48:25 83 40 226 265 555 11.2^*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/05 07:48:05 270 42 110 126 246 2.2^*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/05 15:27:03 75 58 136 194 322 4.1^*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/06 00:48:05 86 86 160 271 339 4.8^*1 ---- ---- 86 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/07 02:48:05 205 7 495 812 2579 280.1^*1 ---- ---- 209 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only 3 points; Only C2

2020/01/07 05:24:06 278 58 89 182 241 2.6^*1 ---- ---- 278 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/08 04:12:05 283 17 208 245 354 4.2^*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/01/08 11:12:05 278 7 149 162 390 6.4^*1 ---- ---- 277 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/08 21:36:05 97 34 209 272 445 7.7^*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/09 00:12:05 279 23 92 68 0 -10.3^*1 ---- ---- 284 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/09 05:48:34 97 27 145 221 871 31.5^*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/10 18:12:05 292 38 249 326 972 38.0^*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/11 12:48:05 286 22 104 104 98 -0.1^*1 ---- ---- 273 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/01/11 18:12:05 123 7 159 72 0 -121.1^*1 ---- ---- 116 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2

2020/01/12 08:00:06 103 46 50 66 151 0.9^*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/12 12:48:07 274 41 209 259 580 13.1^*1 ---- ---- 273 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/13 12:48:05 124 10 253 --- --- --- ---- ---- 124 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 2 points; Only C2

2020/01/14 08:12:05 102 27 214 245 424 6.8^*1 ---- ---- 99 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/01/14 11:24:06 266 37 358 409 771 20.7^*1 ---- ---- 263 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/15 17:12:06 102 47 337 245 0 -39.1^*1 ---- ---- 105 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/17 23:36:05 92 42 132 100 0 -6.4^*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/18 16:00:05 102 22 142 174 290 3.0^*1 ---- ---- 98 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/19 02:48:05 91 84 105 218 260 2.9^*1 ---- ---- 81 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/21 01:36:05 186 3 561 459 0 -94.0^*1 ---- ---- 187 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/21 17:48:06 266 48 164 188 440 7.1^*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/22 06:12:05 254 75 116 120 140 0.3^*1 ---- ---- 251 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/23 10:00:06 248 10 153 100 0 -18.7^*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/23 10:12:05 94 48 67 89 232 2.2^*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/23 12:48:06 263 38 92 105 232 2.0^*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/23 16:36:05 250 22 129 108 0 -2.1^*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/24 03:12:10 91 11 155 173 232 1.6^*1 ---- ---- 85 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event

2020/01/24 06:12:11 115 20 296 285 0 -5.1^*1 ---- ---- 112 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/24 06:12:11 269 29 137 154 257 2.5^*1 ---- ---- 267 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event

2020/01/25 21:48:05 269 53 169 38 0 -29.9^*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/27 08:36:05 85 38 46 13 0 -2.0^*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/27 23:12:05 264 40 200 269 758 23.2^*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2

2020/01/28 02:12:05 265 20 133 67 0 -21.2^*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2

2020/01/29 09:12:09 85 69 139 366 680 19.3 ---- ---- 88 C2 C3 PHTX DST Java Movie data gap; Fixed the MVI roll angle issue on 2026-01-30

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
2020/01/01	01:25:40	107	17	136	124	0	-1.7^*1	----	----	109	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/01	09:12:09	113	59	214	235	254	1.1^*1	----	----	108	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/02	12:36:05	1	9	379	577	1606	104.8^*1	----	----	3	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/03	06:24:07	250	10	173	238	771	24.1^*1	----	----	255	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/03	08:24:05	168	4	444	309	0	-93.0^*1	----	----	166	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/01/03	08:48:25	83	40	226	265	555	11.2^*1	----	----	94	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/05	07:48:05	270	42	110	126	246	2.2^*1	----	----	272	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/05	15:27:03	75	58	136	194	322	4.1^*1	----	----	91	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/06	00:48:05	86	86	160	271	339	4.8^*1	----	----	86	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/07	02:48:05	205	7	495	812	2579	280.1^*1	----	----	209	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only 3 points; Only C2
2020/01/07	05:24:06	278	58	89	182	241	2.6^*1	----	----	278	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/08	04:12:05	283	17	208	245	354	4.2^*1	----	----	277	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/01/08	11:12:05	278	7	149	162	390	6.4^*1	----	----	277	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/08	21:36:05	97	34	209	272	445	7.7^*1	----	----	94	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/09	00:12:05	279	23	92	68	0	-10.3^*1	----	----	284	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/09	05:48:34	97	27	145	221	871	31.5^*1	----	----	95	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/10	18:12:05	292	38	249	326	972	38.0^*1	----	----	282	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/11	12:48:05	286	22	104	104	98	-0.1^*1	----	----	273	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/01/11	18:12:05	123	7	159	72	0	-121.1^*1	----	----	116	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 3 points; Only C2
2020/01/12	08:00:06	103	46	50	66	151	0.9^*1	----	----	99	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/12	12:48:07	274	41	209	259	580	13.1^*1	----	----	273	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/13	12:48:05	124	10	253	---	---	---	----	----	124	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only 2 points; Only C2
2020/01/14	08:12:05	102	27	214	245	424	6.8^*1	----	----	99	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/01/14	11:24:06	266	37	358	409	771	20.7^*1	----	----	263	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/15	17:12:06	102	47	337	245	0	-39.1^*1	----	----	105	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/17	23:36:05	92	42	132	100	0	-6.4^*1	----	----	93	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/18	16:00:05	102	22	142	174	290	3.0^*1	----	----	98	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/19	02:48:05	91	84	105	218	260	2.9^*1	----	----	81	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/21	01:36:05	186	3	561	459	0	-94.0^*1	----	----	187	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/21	17:48:06	266	48	164	188	440	7.1^*1	----	----	260	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/22	06:12:05	254	75	116	120	140	0.3^*1	----	----	251	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/23	10:00:06	248	10	153	100	0	-18.7^*1	----	----	255	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/23	10:12:05	94	48	67	89	232	2.2^*1	----	----	94	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/23	12:48:06	263	38	92	105	232	2.0^*1	----	----	260	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/23	16:36:05	250	22	129	108	0	-2.1^*1	----	----	254	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/24	03:12:10	91	11	155	173	232	1.6^*1	----	----	85	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event
2020/01/24	06:12:11	115	20	296	285	0	-5.1^*1	----	----	112	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/24	06:12:11	269	29	137	154	257	2.5^*1	----	----	267	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event
2020/01/25	21:48:05	269	53	169	38	0	-29.9^*1	----	----	266	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/27	08:36:05	85	38	46	13	0	-2.0^*1	----	----	95	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/27	23:12:05	264	40	200	269	758	23.2^*1	----	----	266	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Poor Event; Only C2
2020/01/28	02:12:05	265	20	133	67	0	-21.2^*1	----	----	262	C2 C3 PHTX DST Java Movie	Fixed the MVI roll angle issue on 2026-01-30; Very Poor Event; Only C2
2020/01/29	09:12:09	85	69	139	366	680	19.3	----	----	88	C2 C3 PHTX DST Java Movie	data gap; Fixed the MVI roll angle issue on 2026-01-30

*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).