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 02:24:06 179 8 731 726 676 -3.5^*1 ---- ---- 183 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/04 18:00:06 272 32 280 352 644 15.6^*1 7.8e+13 3.0e+28 276 C2 C3 PHTX DST Java Movie Very Poor Event

2020/02/04 19:36:05 274 33 267 282 417 4.6^*1 4.8e+13 1.7e+28 276 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/04 22:36:06 352 5 366 525 1616 104.2^*1 ---- ---- 351 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/06 22:36:06 92 24 86 81 0 -0.4^*1 1.4e+14 5.3e+27 92 C2 C3 PHTX DST Java Movie Poor Event

2020/02/07 03:47:16 237 10 307 677 2578 283.8^*1 ---- ---- 240 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/08 09:12:11 218 5 374 296 0 -108.4^*1 ---- ---- 221 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/09 03:48:05 279 8 255 288 580 12.9^*1 ---- ---- 282 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/09 07:48:06 276 14 130 134 217 1.5^*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/10 10:24:05 101 47 196 146 0 -10.3^*1 1.2e+14 2.3e+28 98 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/10 13:48:05 254 17 225 139 0 -27.0^*1 ---- ---- 257 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/10 18:00:05 252 12 121 24 0 -201.3^*1 ---- ---- 253 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/11 15:48:06 90 55 121 138 169 0.7^*1 6.0e+14 4.4e+28 98 C2 C3 PHTX DST Java Movie Very Poor Event

2020/02/11 17:15:10 277 46 125 105 0 -6.9^*1 5.5e+13 4.3e+27 280 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/11 22:36:06 201 4 240 270 729 19.8^*1 ---- ---- 205 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/13 00:48:05 188 7 402 268 0 -87.7^*1 ---- ---- 188 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/13 21:12:09 13 5 523 462 0 -85.1^*1 ---- ---- 15 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/14 07:12:05 12 5 706 --- --- --- ---- ---- 16 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2020/02/15 08:36:05 86 41 148 234 256 2.5^*1 7.3e+14 8.0e+28 87 C2 C3 PHTX DST Java Movie Poor Event

2020/02/16 12:00:05 88 15 97 136 308 3.8^*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/16 16:00:05 16 8 290 203 0 -80.3^*1 ---- ---- 22 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/16 18:36:05 97 19 81 54 0 -5.3^*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/16 20:56:55 253 9 94 92 14 -0.4^*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/17 05:36:05 112 17 343 377 754 19.7^*1 ---- ---- 110 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/17 08:36:05 255 27 127 111 0 -3.6^*1 5.6e+13 4.5e+27 252 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/17 11:12:05 260 40 237 240 262 0.6^*1 1.1e+14 3.2e+28 251 C2 C3 PHTX DST Java Movie Poor Event

2020/02/18 03:12:11 85 19 64 134 260 2.9^*1 ---- ---- 90 C2 C3 PHTX DST Java Movie Poor Event

2020/02/18 20:12:05 94 29 193 236 307 3.1^*1 3.0e+13 5.7e+27 87 C2 C3 PHTX DST Java Movie Very Poor Event

2020/02/19 07:24:05 173 7 469 478 730 13.4^*1 ---- ---- 172 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/22 11:48:06 271 41 141 98 0 -6.0^*1 4.6e+13 4.5e+27 275 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/22 19:48:05 269 23 158 51 0 -90.1^*1 3.6e+13 4.4e+27 269 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/22 21:48:05 87 33 177 197 367 4.5^*1 4.2e+13 6.6e+27 91 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/02/23 02:12:05 267 23 171 182 368 4.6^*1 1.0e+12 1.5e+26 266 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/02/24 05:12:05 236 7 251 309 1404 80.0^*1 ---- ---- 240 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/25 02:24:05 187 4 319 532 2681 295.4^*1 ---- ---- 185 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/02/27 09:12:09 267 30 192 229 232 1.2^*1 6.4e+14 1.2e+29 272 C2 C3 PHTX DST Java Movie Poor Event

2020/02/29 10:12:05 92 55 134 184 189 1.2^*1 2.1e+15 1.9e+29 98 C2 C3 PHTX DST Java Movie 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	179	8	731	726	676	-3.5^*1	----	----	183	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/04	18:00:06	272	32	280	352	644	15.6^*1	7.8e+13	3.0e+28	276	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/02/04	19:36:05	274	33	267	282	417	4.6^*1	4.8e+13	1.7e+28	276	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/04	22:36:06	352	5	366	525	1616	104.2^*1	----	----	351	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/06	22:36:06	92	24	86	81	0	-0.4^*1	1.4e+14	5.3e+27	92	C2 C3 PHTX DST Java Movie	Poor Event
2020/02/07	03:47:16	237	10	307	677	2578	283.8^*1	----	----	240	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/08	09:12:11	218	5	374	296	0	-108.4^*1	----	----	221	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/09	03:48:05	279	8	255	288	580	12.9^*1	----	----	282	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/09	07:48:06	276	14	130	134	217	1.5^*1	----	----	274	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/10	10:24:05	101	47	196	146	0	-10.3^*1	1.2e+14	2.3e+28	98	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/10	13:48:05	254	17	225	139	0	-27.0^*1	----	----	257	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/10	18:00:05	252	12	121	24	0	-201.3^*1	----	----	253	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/11	15:48:06	90	55	121	138	169	0.7^*1	6.0e+14	4.4e+28	98	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/02/11	17:15:10	277	46	125	105	0	-6.9^*1	5.5e+13	4.3e+27	280	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/11	22:36:06	201	4	240	270	729	19.8^*1	----	----	205	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/13	00:48:05	188	7	402	268	0	-87.7^*1	----	----	188	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/13	21:12:09	13	5	523	462	0	-85.1^*1	----	----	15	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/14	07:12:05	12	5	706	---	---	---	----	----	16	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2020/02/15	08:36:05	86	41	148	234	256	2.5^*1	7.3e+14	8.0e+28	87	C2 C3 PHTX DST Java Movie	Poor Event
2020/02/16	12:00:05	88	15	97	136	308	3.8^*1	----	----	91	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/16	16:00:05	16	8	290	203	0	-80.3^*1	----	----	22	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/16	18:36:05	97	19	81	54	0	-5.3^*1	----	----	93	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/16	20:56:55	253	9	94	92	14	-0.4^*1	----	----	255	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/17	05:36:05	112	17	343	377	754	19.7^*1	----	----	110	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/17	08:36:05	255	27	127	111	0	-3.6^*1	5.6e+13	4.5e+27	252	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/17	11:12:05	260	40	237	240	262	0.6^*1	1.1e+14	3.2e+28	251	C2 C3 PHTX DST Java Movie	Poor Event
2020/02/18	03:12:11	85	19	64	134	260	2.9^*1	----	----	90	C2 C3 PHTX DST Java Movie	Poor Event
2020/02/18	20:12:05	94	29	193	236	307	3.1^*1	3.0e+13	5.7e+27	87	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/02/19	07:24:05	173	7	469	478	730	13.4^*1	----	----	172	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/22	11:48:06	271	41	141	98	0	-6.0^*1	4.6e+13	4.5e+27	275	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/22	19:48:05	269	23	158	51	0	-90.1^*1	3.6e+13	4.4e+27	269	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/22	21:48:05	87	33	177	197	367	4.5^*1	4.2e+13	6.6e+27	91	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/02/23	02:12:05	267	23	171	182	368	4.6^*1	1.0e+12	1.5e+26	266	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/02/24	05:12:05	236	7	251	309	1404	80.0^*1	----	----	240	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/25	02:24:05	187	4	319	532	2681	295.4^*1	----	----	185	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/02/27	09:12:09	267	30	192	229	232	1.2^*1	6.4e+14	1.2e+29	272	C2 C3 PHTX DST Java Movie	Poor Event
2020/02/29	10:12:05	92	55	134	184	189	1.2^*1	2.1e+15	1.9e+29	98	C2 C3 PHTX DST Java Movie	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).