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

2017/03/01 01:36:13 77 33 408 557 983 37.4^*1 1.8e+14 1.5e+29 83 C2 C3 PHTX DST Java Movie Poor Event

2017/03/01 12:12:05 174 8 472 788 2659 295.4^*1 ---- ---- 177 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/01 13:48:06 91 30 132 52 0 -40.3^*1 5.5e+13 4.8e+27 89 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/01 20:48:06 177 10 581 511 0 -37.8^*1 ---- ---- 177 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/03/02 01:48:05 359 9 449 449 449 -0.0^*1 ---- ---- 1 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/02 18:12:05 233 13 509 352 0 -26.3^*1 ---- ---- 238 C2 C3 PHTX DST Java Movie

2017/03/03 14:36:12 287 44 372 342 299 -3.5^*1 3.7e+12 2.6e+27 294 C2 C3 PHTX DST Java Movie Poor Event

2017/03/03 19:12:05 304 34 279 374 395 5.4^*1 1.1e+15 4.2e+29 300 C2 C3 PHTX DST Java Movie Poor Event

2017/03/04 01:36:14 308 19 194 203 284 2.1^*1 ---- ---- 307 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/05 11:00:05 116 67 253 538 463 9.5^*1 4.3e+15 1.4e+30 110 C2 C3 PHTX DST Java Movie

2017/03/06 07:48:05 112 21 326 331 348 0.7^*1 7.8e+13 4.2e+28 112 C2 C3 PHTX DST Java Movie Poor Event

2017/03/07 02:08:13 290 28 318 453 1069 47.7^*1 8.7e+12 4.4e+27 291 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/03/07 03:00:27 107 21 217 204 0 -3.7^*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/07 06:36:05 257 7 211 189 0 -13.8^*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/08 01:25:44 282 39 51 41 0 -0.8^*1 3.5e+14 4.6e+27 285 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/08 05:36:05 104 14 281 308 394 4.1^*1 ---- ---- 106 C2 C3 PHTX DST Java Movie Very Poor Event

2017/03/08 23:24:05 106 11 274 257 125 -3.2^*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Very Poor Event

2017/03/09 12:36:05 100 7 223 263 488 9.4^*1 ---- ---- 96 C2 C3 PHTX DST Java Movie Very Poor Event

2017/03/10 19:12:05 292 17 116 134 286 3.0^*1 ---- ---- 286 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/11 01:48:05 275 58 327 295 197 -3.6^*1 4.2e+14 2.2e+29 285 C2 C3 PHTX DST Java Movie

2017/03/11 14:24:06 89 88 357 699 596 14.7 1.2e+16 7.7e+30 80 C2 C3 PHTX DST Java Movie

2017/03/11 19:24:05 6 9 302 136 0 -88.6^*1 ---- ---- 6 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/12 00:48:05 81 42 444 465 469 1.8^*1 5.2e+14 5.1e+29 80 C2 C3 PHTX DST Java Movie

2017/03/12 01:25:42 18 9 887 --- --- --- ---- ---- 19 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2017/03/12 08:00:06 91 13 230 238 269 0.9^*1 ---- ---- 96 C2 C3 PHTX DST Java Movie Poor Event

2017/03/13 09:48:05 287 24 110 237 397 6.7^*1 1.9e+14 1.2e+28 283 C2 C3 PHTX DST Java Movie Poor Event

2017/03/13 20:12:05 337 221 668 779 739 8.8 6.1e+15^*2 1.4e+31^*2 293 C2 C3 PHTX DST Java Movie Partial Halo

2017/03/14 17:24:05 62 33 299 423 484 8.5^*1 2.6e+14 1.2e+29 55 C2 C3 PHTX DST Java Movie

2017/03/15 09:24:05 296 26 202 290 664 17.8^*1 4.7e+12 9.7e+26 296 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/15 11:12:05 81 33 129 136 192 0.9^*1 5.3e+13 4.4e+27 73 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/15 22:00:05 337 12 270 0 0 -76.7^*1 ---- ---- 334 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/03/16 03:24:05 69 8 379 445 504 7.0^*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Poor Event

2017/03/18 20:36:05 128 38 97 59 0 -12.1^*1 6.3e+13 3.0e+27 124 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/18 22:36:05 358 15 368 658 2160 190.2^*1 ---- ---- 359 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2017/03/19 04:48:06 108 16 179 218 542 12.3^*1 ---- ---- 111 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/19 15:24:05 173 160 85 124 246 2.7^*1 9.0e+14^*2 3.3e+28^*2 120 C2 C3 PHTX DST Java Movie Very Poor Event; Partial Halo

2017/03/20 19:36:05 78 9 176 245 484 9.4^*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Very Poor Event

2017/03/21 20:48:05 74 60 289 351 524 9.1^*1 2.9e+14 1.2e+29 73 C2 C3 PHTX DST Java Movie

2017/03/22 04:00:05 124 9 155 0 0 -134.3^*1 ---- ---- 122 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/22 08:48:05 345 6 271 470 2056 175.3^*1 ---- ---- 344 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2017/03/22 08:48:05 133 7 145 --- --- --- ---- ---- 134 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2017/03/22 10:48:05 63 41 166 245 1151 53.7^*1 5.7e+13 7.9e+27 73 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/22 18:00:05 76 41 289 365 598 12.7^*1 3.6e+14 1.5e+29 68 C2 C3 PHTX DST Java Movie Poor Event

2017/03/24 01:36:05 70 31 249 196 0 -7.9^*1 5.3e+13 1.6e+28 75 C2 C3 PHTX DST Java Movie Very Poor Event

2017/03/24 09:12:08 1 9 296 247 0 -19.2^*1 ---- ---- 2 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/03/24 17:36:05 100 32 321 194 0 -17.7^*1 1.6e+14 8.2e+28 94 C2 C3 PHTX DST Java Movie

2017/03/27 08:24:05 49 86 58 121 203 1.7^*1 1.7e+15 2.8e+28 47 C2 C3 PHTX DST Java Movie Poor Event

2017/03/27 12:00:05 102 56 338 294 0 -6.4^*1 5.5e+14 3.2e+29 88 C2 C3 PHTX DST Java Movie

2017/03/27 18:12:05 89 46 230 144 0 -8.7^*1 1.1e+15 3.0e+29 90 C2 C3 PHTX DST Java Movie

2017/03/27 21:15:56 227 18 144 311 429 7.8^*1 ---- ---- 234 C2 C3 PHTX DST Java Movie Poor Event

2017/03/28 02:48:06 268 90 89 220 266 3.0^*1 2.6e+15 1.0e+29 274 C2 C3 PHTX DST Java Movie Poor Event

2017/03/28 19:24:05 256 75 329 344 336 0.6 3.7e+15 2.0e+30 264 C2 C3 PHTX DST Java Movie

2017/03/29 04:00:05 265 11 417 492 799 23.4^*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Very Poor Event

2017/03/29 14:24:05 287 12 438 548 631 12.8^*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Poor Event

2017/03/30 08:48:05 280 44 232 267 360 3.9^*1 3.8e+14 1.0e+29 272 C2 C3 PHTX DST Java Movie Very Poor Event

2017/03/30 20:12:05 228 11 214 254 338 3.5^*1 ---- ---- 233 C2 C3 PHTX DST Java Movie Very 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
2017/03/01	01:36:13	77	33	408	557	983	37.4^*1	1.8e+14	1.5e+29	83	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/01	12:12:05	174	8	472	788	2659	295.4^*1	----	----	177	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/01	13:48:06	91	30	132	52	0	-40.3^*1	5.5e+13	4.8e+27	89	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/01	20:48:06	177	10	581	511	0	-37.8^*1	----	----	177	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/03/02	01:48:05	359	9	449	449	449	-0.0^*1	----	----	1	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/02	18:12:05	233	13	509	352	0	-26.3^*1	----	----	238	C2 C3 PHTX DST Java Movie
2017/03/03	14:36:12	287	44	372	342	299	-3.5^*1	3.7e+12	2.6e+27	294	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/03	19:12:05	304	34	279	374	395	5.4^*1	1.1e+15	4.2e+29	300	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/04	01:36:14	308	19	194	203	284	2.1^*1	----	----	307	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/05	11:00:05	116	67	253	538	463	9.5^*1	4.3e+15	1.4e+30	110	C2 C3 PHTX DST Java Movie
2017/03/06	07:48:05	112	21	326	331	348	0.7^*1	7.8e+13	4.2e+28	112	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/07	02:08:13	290	28	318	453	1069	47.7^*1	8.7e+12	4.4e+27	291	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/03/07	03:00:27	107	21	217	204	0	-3.7^*1	----	----	109	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/07	06:36:05	257	7	211	189	0	-13.8^*1	----	----	265	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/08	01:25:44	282	39	51	41	0	-0.8^*1	3.5e+14	4.6e+27	285	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/08	05:36:05	104	14	281	308	394	4.1^*1	----	----	106	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/03/08	23:24:05	106	11	274	257	125	-3.2^*1	----	----	104	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/03/09	12:36:05	100	7	223	263	488	9.4^*1	----	----	96	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/03/10	19:12:05	292	17	116	134	286	3.0^*1	----	----	286	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/11	01:48:05	275	58	327	295	197	-3.6^*1	4.2e+14	2.2e+29	285	C2 C3 PHTX DST Java Movie
2017/03/11	14:24:06	89	88	357	699	596	14.7	1.2e+16	7.7e+30	80	C2 C3 PHTX DST Java Movie
2017/03/11	19:24:05	6	9	302	136	0	-88.6^*1	----	----	6	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/12	00:48:05	81	42	444	465	469	1.8^*1	5.2e+14	5.1e+29	80	C2 C3 PHTX DST Java Movie
2017/03/12	01:25:42	18	9	887	---	---	---	----	----	19	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2017/03/12	08:00:06	91	13	230	238	269	0.9^*1	----	----	96	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/13	09:48:05	287	24	110	237	397	6.7^*1	1.9e+14	1.2e+28	283	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/13	20:12:05	337	221	668	779	739	8.8	6.1e+15^*2	1.4e+31^*2	293	C2 C3 PHTX DST Java Movie	Partial Halo
2017/03/14	17:24:05	62	33	299	423	484	8.5^*1	2.6e+14	1.2e+29	55	C2 C3 PHTX DST Java Movie
2017/03/15	09:24:05	296	26	202	290	664	17.8^*1	4.7e+12	9.7e+26	296	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/15	11:12:05	81	33	129	136	192	0.9^*1	5.3e+13	4.4e+27	73	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/15	22:00:05	337	12	270	0	0	-76.7^*1	----	----	334	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/03/16	03:24:05	69	8	379	445	504	7.0^*1	----	----	71	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/18	20:36:05	128	38	97	59	0	-12.1^*1	6.3e+13	3.0e+27	124	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/18	22:36:05	358	15	368	658	2160	190.2^*1	----	----	359	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2017/03/19	04:48:06	108	16	179	218	542	12.3^*1	----	----	111	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/19	15:24:05	173	160	85	124	246	2.7^*1	9.0e+14^*2	3.3e+28^*2	120	C2 C3 PHTX DST Java Movie	Very Poor Event; Partial Halo
2017/03/20	19:36:05	78	9	176	245	484	9.4^*1	----	----	75	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/03/21	20:48:05	74	60	289	351	524	9.1^*1	2.9e+14	1.2e+29	73	C2 C3 PHTX DST Java Movie
2017/03/22	04:00:05	124	9	155	0	0	-134.3^*1	----	----	122	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/22	08:48:05	345	6	271	470	2056	175.3^*1	----	----	344	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2017/03/22	08:48:05	133	7	145	---	---	---	----	----	134	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2017/03/22	10:48:05	63	41	166	245	1151	53.7^*1	5.7e+13	7.9e+27	73	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/22	18:00:05	76	41	289	365	598	12.7^*1	3.6e+14	1.5e+29	68	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/24	01:36:05	70	31	249	196	0	-7.9^*1	5.3e+13	1.6e+28	75	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/03/24	09:12:08	1	9	296	247	0	-19.2^*1	----	----	2	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/03/24	17:36:05	100	32	321	194	0	-17.7^*1	1.6e+14	8.2e+28	94	C2 C3 PHTX DST Java Movie
2017/03/27	08:24:05	49	86	58	121	203	1.7^*1	1.7e+15	2.8e+28	47	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/27	12:00:05	102	56	338	294	0	-6.4^*1	5.5e+14	3.2e+29	88	C2 C3 PHTX DST Java Movie
2017/03/27	18:12:05	89	46	230	144	0	-8.7^*1	1.1e+15	3.0e+29	90	C2 C3 PHTX DST Java Movie
2017/03/27	21:15:56	227	18	144	311	429	7.8^*1	----	----	234	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/28	02:48:06	268	90	89	220	266	3.0^*1	2.6e+15	1.0e+29	274	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/28	19:24:05	256	75	329	344	336	0.6	3.7e+15	2.0e+30	264	C2 C3 PHTX DST Java Movie
2017/03/29	04:00:05	265	11	417	492	799	23.4^*1	----	----	268	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/03/29	14:24:05	287	12	438	548	631	12.8^*1	----	----	274	C2 C3 PHTX DST Java Movie	Poor Event
2017/03/30	08:48:05	280	44	232	267	360	3.9^*1	3.8e+14	1.0e+29	272	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/03/30	20:12:05	228	11	214	254	338	3.5^*1	----	----	233	C2 C3 PHTX DST Java Movie	Very 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).