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 01:25:40 120 17 136 124 0 -1.7^*1 ---- ---- 121 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/01 09:12:09 126 59 214 235 254 1.1^*1 9.7e+13 2.2e+28 121 C2 C3 PHTX DST Java Movie Poor Event

2020/01/02 12:36:05 13 9 379 577 1606 104.8^*1 ---- ---- 15 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/03 06:24:07 262 10 173 238 771 24.1^*1 ---- ---- 267 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/03 08:24:05 180 4 444 309 0 -93.0^*1 ---- ---- 178 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/01/03 08:48:25 95 40 226 265 555 11.2^*1 1.4e+13 3.5e+27 106 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/05 07:48:05 282 42 110 126 246 2.2^*1 1.8e+14 1.1e+28 284 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/05 15:27:03 87 58 136 194 322 4.1^*1 2.5e+14 2.3e+28 103 C2 C3 PHTX DST Java Movie Poor Event

2020/01/06 00:48:05 97 86 160 271 339 4.8^*1 1.1e+15 1.4e+29 99 C2 C3 PHTX DST Java Movie Poor Event

2020/01/07 02:48:05 217 7 495 812 2579 280.1^*1 ---- ---- 221 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2

2020/01/07 05:24:06 289 58 89 182 241 2.6^*1 6.4e+14 2.5e+28 290 C2 C3 PHTX DST Java Movie Poor Event

2020/01/08 04:12:05 295 17 208 245 354 4.2^*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Very Poor Event

2020/01/08 11:12:05 289 7 149 162 390 6.4^*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/08 21:36:05 109 34 209 272 445 7.7^*1 7.4e+13 1.6e+28 106 C2 C3 PHTX DST Java Movie Poor Event

2020/01/09 00:12:05 291 23 92 68 0 -10.3^*1 1.7e+13 7.4e+26 295 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/09 05:48:34 108 27 145 221 871 31.5^*1 3.3e+12 3.5e+26 106 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/10 18:12:05 303 38 249 326 972 38.0^*1 3.1e+13 9.7e+27 293 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/11 12:48:05 297 22 104 104 98 -0.1^*1 4.7e+12 2.6e+26 284 C2 C3 PHTX DST Java Movie Very Poor Event

2020/01/11 18:12:05 134 7 159 72 0 -121.1^*1 ---- ---- 127 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/01/12 08:00:06 114 46 50 66 151 0.9^*1 3.8e+14 4.8e+27 110 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/12 12:48:07 285 41 209 259 580 13.1^*1 5.0e+13 1.1e+28 284 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/13 12:48:05 134 10 253 --- --- --- ---- ---- 134 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2020/01/14 08:12:05 113 27 214 245 424 6.8^*1 6.2e+12 1.4e+27 111 C2 C3 PHTX DST Java Movie Very Poor Event

2020/01/14 11:24:06 277 37 358 409 771 20.7^*1 3.8e+13 2.4e+28 273 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/15 17:12:06 112 47 337 245 0 -39.1^*1 2.5e+13 1.4e+28 115 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/17 23:36:05 102 42 132 100 0 -6.4^*1 1.3e+14 1.1e+28 103 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/18 16:00:05 112 22 142 174 290 3.0^*1 4.9e+13 4.9e+27 109 C2 C3 PHTX DST Java Movie Poor Event

2020/01/19 02:48:05 100 84 105 218 260 2.9^*1 1.1e+15 5.9e+28 91 C2 C3 PHTX DST Java Movie Poor Event

2020/01/21 01:36:05 196 3 561 459 0 -94.0^*1 ---- ---- 196 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/21 17:48:06 275 48 164 188 440 7.1^*1 2.7e+13 3.6e+27 270 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/22 06:12:05 263 75 116 120 140 0.3^*1 4.3e+14 2.9e+28 260 C2 C3 PHTX DST Java Movie Poor Event

2020/01/23 10:00:06 257 10 153 100 0 -18.7^*1 ---- ---- 264 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/23 10:12:05 103 48 67 89 232 2.2^*1 1.1e+14 2.4e+27 103 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/23 12:48:06 272 38 92 105 232 2.0^*1 6.4e+13 2.7e+27 269 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/23 16:36:05 259 22 129 108 0 -2.1^*1 5.1e+13 4.2e+27 263 C2 C3 PHTX DST Java Movie Poor Event

2020/01/24 03:12:10 99 11 155 173 232 1.6^*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Poor Event

2020/01/24 06:12:11 124 20 296 285 0 -5.1^*1 1.2e+13 5.2e+27 121 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/24 06:12:11 278 29 137 154 257 2.5^*1 7.3e+12 6.8e+26 277 C2 C3 PHTX DST Java Movie Very Poor Event

2020/01/25 21:48:05 277 53 169 38 0 -29.9^*1 2.0e+12 2.8e+26 274 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/27 08:36:05 94 38 46 13 0 -2.0^*1 3.0e+14 3.2e+27 103 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/27 23:12:05 273 40 200 269 758 23.2^*1 3.8e+13 7.6e+27 275 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/01/28 02:12:05 273 20 133 67 0 -21.2^*1 4.5e+12 4.0e+26 271 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/01/29 09:12:09 93 69 139 366 680 19.3 7.5e+14 7.3e+28 96 C2 C3 PHTX DST Java Movie data gap

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	120	17	136	124	0	-1.7^*1	----	----	121	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/01	09:12:09	126	59	214	235	254	1.1^*1	9.7e+13	2.2e+28	121	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/02	12:36:05	13	9	379	577	1606	104.8^*1	----	----	15	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/03	06:24:07	262	10	173	238	771	24.1^*1	----	----	267	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/03	08:24:05	180	4	444	309	0	-93.0^*1	----	----	178	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/01/03	08:48:25	95	40	226	265	555	11.2^*1	1.4e+13	3.5e+27	106	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/05	07:48:05	282	42	110	126	246	2.2^*1	1.8e+14	1.1e+28	284	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/05	15:27:03	87	58	136	194	322	4.1^*1	2.5e+14	2.3e+28	103	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/06	00:48:05	97	86	160	271	339	4.8^*1	1.1e+15	1.4e+29	99	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/07	02:48:05	217	7	495	812	2579	280.1^*1	----	----	221	C2 C3 PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
2020/01/07	05:24:06	289	58	89	182	241	2.6^*1	6.4e+14	2.5e+28	290	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/08	04:12:05	295	17	208	245	354	4.2^*1	----	----	289	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/01/08	11:12:05	289	7	149	162	390	6.4^*1	----	----	289	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/08	21:36:05	109	34	209	272	445	7.7^*1	7.4e+13	1.6e+28	106	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/09	00:12:05	291	23	92	68	0	-10.3^*1	1.7e+13	7.4e+26	295	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/09	05:48:34	108	27	145	221	871	31.5^*1	3.3e+12	3.5e+26	106	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/10	18:12:05	303	38	249	326	972	38.0^*1	3.1e+13	9.7e+27	293	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/11	12:48:05	297	22	104	104	98	-0.1^*1	4.7e+12	2.6e+26	284	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/01/11	18:12:05	134	7	159	72	0	-121.1^*1	----	----	127	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/01/12	08:00:06	114	46	50	66	151	0.9^*1	3.8e+14	4.8e+27	110	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/12	12:48:07	285	41	209	259	580	13.1^*1	5.0e+13	1.1e+28	284	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/13	12:48:05	134	10	253	---	---	---	----	----	134	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2020/01/14	08:12:05	113	27	214	245	424	6.8^*1	6.2e+12	1.4e+27	111	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/01/14	11:24:06	277	37	358	409	771	20.7^*1	3.8e+13	2.4e+28	273	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/15	17:12:06	112	47	337	245	0	-39.1^*1	2.5e+13	1.4e+28	115	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/17	23:36:05	102	42	132	100	0	-6.4^*1	1.3e+14	1.1e+28	103	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/18	16:00:05	112	22	142	174	290	3.0^*1	4.9e+13	4.9e+27	109	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/19	02:48:05	100	84	105	218	260	2.9^*1	1.1e+15	5.9e+28	91	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/21	01:36:05	196	3	561	459	0	-94.0^*1	----	----	196	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/21	17:48:06	275	48	164	188	440	7.1^*1	2.7e+13	3.6e+27	270	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/22	06:12:05	263	75	116	120	140	0.3^*1	4.3e+14	2.9e+28	260	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/23	10:00:06	257	10	153	100	0	-18.7^*1	----	----	264	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/23	10:12:05	103	48	67	89	232	2.2^*1	1.1e+14	2.4e+27	103	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/23	12:48:06	272	38	92	105	232	2.0^*1	6.4e+13	2.7e+27	269	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/23	16:36:05	259	22	129	108	0	-2.1^*1	5.1e+13	4.2e+27	263	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/24	03:12:10	99	11	155	173	232	1.6^*1	----	----	95	C2 C3 PHTX DST Java Movie	Poor Event
2020/01/24	06:12:11	124	20	296	285	0	-5.1^*1	1.2e+13	5.2e+27	121	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/24	06:12:11	278	29	137	154	257	2.5^*1	7.3e+12	6.8e+26	277	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/01/25	21:48:05	277	53	169	38	0	-29.9^*1	2.0e+12	2.8e+26	274	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/27	08:36:05	94	38	46	13	0	-2.0^*1	3.0e+14	3.2e+27	103	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/27	23:12:05	273	40	200	269	758	23.2^*1	3.8e+13	7.6e+27	275	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/01/28	02:12:05	273	20	133	67	0	-21.2^*1	4.5e+12	4.0e+26	271	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/01/29	09:12:09	93	69	139	366	680	19.3	7.5e+14	7.3e+28	96	C2 C3 PHTX DST Java Movie	data gap

*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).