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

2017/02/01 06:36:06 346 101 76 103 240 2.4^*1 4.2e+14 1.2e+28 360 C2 C3 PHTX DST Java Movie Only C2

2017/02/01 14:48:05 342 143 279 591 570 15.1^*1 4.3e+15^*2 1.7e+30^*2 320 C2 C3 PHTX DST Java Movie Partial Halo

2017/02/02 08:24:05 282 34 351 484 699 20.0^*1 7.0e+13 4.3e+28 290 C2 C3 PHTX DST Java Movie Poor Event

2017/02/02 09:36:05 70 13 376 592 1472 88.2^*1 ---- ---- 74 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/02 14:12:05 96 20 458 435 38 -9.8^*1 1.7e+14 1.8e+29 97 C2 C3 PHTX DST Java Movie Poor Event

2017/02/02 20:57:26 114 16 116 73 0 -10.9^*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/02 21:38:34 300 19 374 381 384 0.5^*1 ---- ---- 298 C2 C3 PHTX DST Java Movie

2017/02/03 07:24:09 306 13 363 464 653 16.5^*1 ---- ---- 306 C2 C3 PHTX DST Java Movie Very Poor Event

2017/02/03 11:36:06 101 40 402 395 360 -1.6^*1 2.5e+14 2.0e+29 103 C2 C3 PHTX DST Java Movie Poor Event

2017/02/03 15:48:05 105 31 237 312 529 10.4^*1 4.1e+14 1.1e+29 106 C2 C3 PHTX DST Java Movie

2017/02/03 18:00:05 304 24 476 420 364 -6.1^*1 6.0e+14 6.7e+29 301 C2 C3 PHTX DST Java Movie

2017/02/04 17:00:05 305 27 182 249 467 8.5^*1 2.6e+14 4.3e+28 305 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/04 18:00:05 100 21 192 209 401 5.3^*1 1.9e+13 3.5e+27 103 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/05 01:25:43 289 16 421 379 0 -13.4^*1 ---- ---- 282 C2 C3 PHTX DST Java Movie

2017/02/06 01:36:13 73 16 211 400 803 27.3^*1 ---- ---- 78 C2 C3 PHTX DST Java Movie Very Poor Event

2017/02/07 00:12:05 259 11 435 505 911 30.3^*1 ---- ---- 263 C2 C3 PHTX DST Java Movie Poor Event

2017/02/07 02:48:05 72 10 235 224 0 -4.9^*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/07 08:00:05 232 7 264 305 698 18.3^*1 ---- ---- 234 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/07 09:48:05 288 39 367 378 420 2.0^*1 3.5e+14 2.3e+29 285 C2 C3 PHTX DST Java Movie Poor Event

2017/02/08 00:12:05 19 7 328 335 509 6.7^*1 ---- ---- 23 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/08 03:36:05 212 140 104 153 227 2.0^*1 1.1e+15^*2 6.0e+28^*2 205 C2 C3 PHTX DST Java Movie Poor Event; Partial Halo

2017/02/08 04:48:05 172 105 189 239 363 4.7^*1 2.7e+14 4.8e+28 175 C2 C3 PHTX DST Java Movie Very Poor Event

2017/02/08 16:12:06 290 52 338 258 141 -6.2^*1 1.7e+15 1.0e+30 300 C2 C3 PHTX DST Java Movie

2017/02/08 18:48:05 299 38 216 258 547 11.0^*1 2.0e+14 4.8e+28 302 C2 C3 PHTX DST Java Movie Only C2

2017/02/09 19:48:05 62 14 173 191 372 4.7^*1 ---- ---- 68 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/10 11:36:05 287 44 209 241 523 9.9^*1 5.4e+13 1.2e+28 285 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/10 12:00:05 71 11 135 16 0 -52.0^*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/10 13:48:06 295 77 338 216 0 -31.8^*1 2.6e+14 1.5e+29 287 C2 C3 PHTX DST Java Movie

2017/02/11 03:48:07 285 65 200 163 0 -7.0^*1 1.3e+14 2.6e+28 292 C2 C3 PHTX DST Java Movie Only C2

2017/02/11 08:00:05 270 20 195 375 579 15.7^*1 3.1e+14 5.8e+28 263 C2 C3 PHTX DST Java Movie

2017/02/11 17:00:35 267 25 295 335 417 4.6^*1 1.1e+14 4.8e+28 261 C2 C3 PHTX DST Java Movie Poor Event

2017/02/13 08:00:05 119 19 212 304 514 11.7^*1 ---- ---- 117 C2 C3 PHTX DST Java Movie Very Poor Event

2017/02/13 16:10:54 38 12 403 481 897 30.2^*1 ---- ---- 45 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2

2017/02/15 15:36:06 58 25 302 198 0 -24.2^*1 1.6e+14 7.5e+28 58 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/17 07:48:05 62 41 141 275 837 29.7^*1 3.6e+13 3.5e+27 52 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/17 14:48:05 56 34 143 221 505 10.4^*1 2.6e+14 2.6e+28 59 C2 C3 PHTX DST Java Movie Poor Event

2017/02/17 22:12:06 55 29 170 329 383 6.2^*1 7.5e+14 1.1e+29 57 C2 C3 PHTX DST Java Movie

2017/02/17 22:36:05 121 10 275 399 959 37.3^*1 ---- ---- 120 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/18 01:25:20 73 15 381 412 482 4.6^*1 ---- ---- 73 C2 C3 PHTX DST Java Movie

2017/02/18 07:12:06 289 48 367 547 558 11.2 1.3e+15 8.8e+29 284 C2 C3 PHTX DST Java Movie

2017/02/18 09:24:05 248 23 383 428 444 3.5^*1 5.0e+14 3.7e+29 255 C2 C3 PHTX DST Java Movie

2017/02/18 16:36:05 51 10 332 637 646 18.7^*1 ---- ---- 56 C2 C3 PHTX DST Java Movie Poor Event

2017/02/18 17:24:05 82 30 260 318 717 19.4^*1 3.4e+13 1.2e+28 74 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/18 22:00:05 281 32 244 291 362 3.8^*1 4.1e+14 1.2e+29 278 C2 C3 PHTX DST Java Movie Poor Event

2017/02/19 05:00:05 265 12 371 564 572 12.7^*1 ---- ---- 264 C2 C3 PHTX DST Java Movie Poor Event

2017/02/19 08:36:05 308 96 136 149 218 1.4^*1 3.7e+13 3.4e+27 309 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/19 10:24:05 56 23 361 539 676 17.3^*1 3.1e+14 2.1e+29 63 C2 C3 PHTX DST Java Movie Poor Event

2017/02/20 14:48:06 55 28 221 263 634 15.3^*1 7.8e+13 1.9e+28 56 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/02/20 18:48:05 59 33 260 328 386 4.5^*1 6.0e+14 2.0e+29 61 C2 C3 PHTX DST Java Movie

2017/02/21 06:12:05 124 6 205 99 0 -43.2^*1 ---- ---- 122 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/02/22 12:00:05 56 36 298 288 218 -2.0^*1 1.4e+14 6.0e+28 60 C2 C3 PHTX DST Java Movie Very Poor Event

2017/02/23 11:12:05 45 63 469 356 178 -12.2^*1 1.5e+15 1.6e+30 49 C2 C3 PHTX DST Java Movie

2017/02/24 03:12:08 238 7 230 238 253 0.7^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Very Poor Event

2017/02/24 18:00:05 242 17 330 553 651 18.0^*1 ---- ---- 245 C2 C3 PHTX DST Java Movie Poor Event

2017/02/24 21:48:34 252 96 278 399 380 4.9^*1 1.8e+15 6.9e+29 266 C2 C3 PHTX DST Java Movie

2017/02/26 00:12:05 101 56 69 172 291 3.8^*1 4.8e+14 1.1e+28 93 C2 C3 PHTX DST Java Movie Very Poor Event

2017/02/26 10:48:06 94 65 387 412 410 1.5 1.0e+15 7.8e+29 89 C2 C3 PHTX DST Java Movie

2017/02/27 13:25:44 96 14 388 483 522 8.1^*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Poor Event

2017/02/27 16:12:06 254 71 168 151 0 -2.9^*1 7.0e+14 9.9e+28 258 C2 C3 PHTX DST Java Movie Only C2

2017/02/28 06:00:06 260 71 90 233 240 2.5^*1 5.5e+15 2.2e+29 279 C2 C3 PHTX DST Java Movie Poor Event

2017/02/28 23:12:12 72 34 118 185 436 7.9^*1 2.6e+14 1.8e+28 72 C2 C3 PHTX DST Java Movie Very Poor Event; 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
2017/02/01	06:36:06	346	101	76	103	240	2.4^*1	4.2e+14	1.2e+28	360	C2 C3 PHTX DST Java Movie	Only C2
2017/02/01	14:48:05	342	143	279	591	570	15.1^*1	4.3e+15^*2	1.7e+30^*2	320	C2 C3 PHTX DST Java Movie	Partial Halo
2017/02/02	08:24:05	282	34	351	484	699	20.0^*1	7.0e+13	4.3e+28	290	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/02	09:36:05	70	13	376	592	1472	88.2^*1	----	----	74	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/02	14:12:05	96	20	458	435	38	-9.8^*1	1.7e+14	1.8e+29	97	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/02	20:57:26	114	16	116	73	0	-10.9^*1	----	----	114	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/02	21:38:34	300	19	374	381	384	0.5^*1	----	----	298	C2 C3 PHTX DST Java Movie
2017/02/03	07:24:09	306	13	363	464	653	16.5^*1	----	----	306	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/02/03	11:36:06	101	40	402	395	360	-1.6^*1	2.5e+14	2.0e+29	103	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/03	15:48:05	105	31	237	312	529	10.4^*1	4.1e+14	1.1e+29	106	C2 C3 PHTX DST Java Movie
2017/02/03	18:00:05	304	24	476	420	364	-6.1^*1	6.0e+14	6.7e+29	301	C2 C3 PHTX DST Java Movie
2017/02/04	17:00:05	305	27	182	249	467	8.5^*1	2.6e+14	4.3e+28	305	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/04	18:00:05	100	21	192	209	401	5.3^*1	1.9e+13	3.5e+27	103	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/05	01:25:43	289	16	421	379	0	-13.4^*1	----	----	282	C2 C3 PHTX DST Java Movie
2017/02/06	01:36:13	73	16	211	400	803	27.3^*1	----	----	78	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/02/07	00:12:05	259	11	435	505	911	30.3^*1	----	----	263	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/07	02:48:05	72	10	235	224	0	-4.9^*1	----	----	79	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/07	08:00:05	232	7	264	305	698	18.3^*1	----	----	234	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/07	09:48:05	288	39	367	378	420	2.0^*1	3.5e+14	2.3e+29	285	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/08	00:12:05	19	7	328	335	509	6.7^*1	----	----	23	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/08	03:36:05	212	140	104	153	227	2.0^*1	1.1e+15^*2	6.0e+28^*2	205	C2 C3 PHTX DST Java Movie	Poor Event; Partial Halo
2017/02/08	04:48:05	172	105	189	239	363	4.7^*1	2.7e+14	4.8e+28	175	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/02/08	16:12:06	290	52	338	258	141	-6.2^*1	1.7e+15	1.0e+30	300	C2 C3 PHTX DST Java Movie
2017/02/08	18:48:05	299	38	216	258	547	11.0^*1	2.0e+14	4.8e+28	302	C2 C3 PHTX DST Java Movie	Only C2
2017/02/09	19:48:05	62	14	173	191	372	4.7^*1	----	----	68	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/10	11:36:05	287	44	209	241	523	9.9^*1	5.4e+13	1.2e+28	285	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/10	12:00:05	71	11	135	16	0	-52.0^*1	----	----	71	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/10	13:48:06	295	77	338	216	0	-31.8^*1	2.6e+14	1.5e+29	287	C2 C3 PHTX DST Java Movie
2017/02/11	03:48:07	285	65	200	163	0	-7.0^*1	1.3e+14	2.6e+28	292	C2 C3 PHTX DST Java Movie	Only C2
2017/02/11	08:00:05	270	20	195	375	579	15.7^*1	3.1e+14	5.8e+28	263	C2 C3 PHTX DST Java Movie
2017/02/11	17:00:35	267	25	295	335	417	4.6^*1	1.1e+14	4.8e+28	261	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/13	08:00:05	119	19	212	304	514	11.7^*1	----	----	117	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/02/13	16:10:54	38	12	403	481	897	30.2^*1	----	----	45	C2 C3 PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
2017/02/15	15:36:06	58	25	302	198	0	-24.2^*1	1.6e+14	7.5e+28	58	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/17	07:48:05	62	41	141	275	837	29.7^*1	3.6e+13	3.5e+27	52	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/17	14:48:05	56	34	143	221	505	10.4^*1	2.6e+14	2.6e+28	59	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/17	22:12:06	55	29	170	329	383	6.2^*1	7.5e+14	1.1e+29	57	C2 C3 PHTX DST Java Movie
2017/02/17	22:36:05	121	10	275	399	959	37.3^*1	----	----	120	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/18	01:25:20	73	15	381	412	482	4.6^*1	----	----	73	C2 C3 PHTX DST Java Movie
2017/02/18	07:12:06	289	48	367	547	558	11.2	1.3e+15	8.8e+29	284	C2 C3 PHTX DST Java Movie
2017/02/18	09:24:05	248	23	383	428	444	3.5^*1	5.0e+14	3.7e+29	255	C2 C3 PHTX DST Java Movie
2017/02/18	16:36:05	51	10	332	637	646	18.7^*1	----	----	56	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/18	17:24:05	82	30	260	318	717	19.4^*1	3.4e+13	1.2e+28	74	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/18	22:00:05	281	32	244	291	362	3.8^*1	4.1e+14	1.2e+29	278	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/19	05:00:05	265	12	371	564	572	12.7^*1	----	----	264	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/19	08:36:05	308	96	136	149	218	1.4^*1	3.7e+13	3.4e+27	309	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/19	10:24:05	56	23	361	539	676	17.3^*1	3.1e+14	2.1e+29	63	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/20	14:48:06	55	28	221	263	634	15.3^*1	7.8e+13	1.9e+28	56	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/02/20	18:48:05	59	33	260	328	386	4.5^*1	6.0e+14	2.0e+29	61	C2 C3 PHTX DST Java Movie
2017/02/21	06:12:05	124	6	205	99	0	-43.2^*1	----	----	122	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/02/22	12:00:05	56	36	298	288	218	-2.0^*1	1.4e+14	6.0e+28	60	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/02/23	11:12:05	45	63	469	356	178	-12.2^*1	1.5e+15	1.6e+30	49	C2 C3 PHTX DST Java Movie
2017/02/24	03:12:08	238	7	230	238	253	0.7^*1	----	----	248	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/02/24	18:00:05	242	17	330	553	651	18.0^*1	----	----	245	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/24	21:48:34	252	96	278	399	380	4.9^*1	1.8e+15	6.9e+29	266	C2 C3 PHTX DST Java Movie
2017/02/26	00:12:05	101	56	69	172	291	3.8^*1	4.8e+14	1.1e+28	93	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/02/26	10:48:06	94	65	387	412	410	1.5	1.0e+15	7.8e+29	89	C2 C3 PHTX DST Java Movie
2017/02/27	13:25:44	96	14	388	483	522	8.1^*1	----	----	91	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/27	16:12:06	254	71	168	151	0	-2.9^*1	7.0e+14	9.9e+28	258	C2 C3 PHTX DST Java Movie	Only C2
2017/02/28	06:00:06	260	71	90	233	240	2.5^*1	5.5e+15	2.2e+29	279	C2 C3 PHTX DST Java Movie	Poor Event
2017/02/28	23:12:12	72	34	118	185	436	7.9^*1	2.6e+14	1.8e+28	72	C2 C3 PHTX DST Java Movie	Very Poor Event; 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).