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

2018/10/01 06:36:05 70 21 424 531 804 22.9^*1 8.9e+13 8.0e+28 83 C2 C3 PHTX DST Java Movie

2018/10/02 06:24:05 274 51 156 89 0 -11.3^*1 2.4e+14 2.9e+28 272 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/02 09:36:05 342 3 236 191 0 -40.1^*1 ---- ---- 341 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/03 08:36:05 79 113 197 486 390 6.4^*1 5.4e+15 1.0e+30 73 C2 C3 PHTX DST Java Movie

2018/10/03 15:26:47 266 25 157 213 554 12.2^*1 2.5e+13 3.1e+27 266 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/10/04 14:24:05 268 37 189 194 214 0.5^*1 9.9e+13 1.8e+28 267 C2 C3 PHTX DST Java Movie Very Poor Event

2018/10/04 17:36:05 68 37 314 422 506 9.1^*1 2.9e+13 1.4e+28 77 C2 C3 PHTX DST Java Movie Very Poor Event

2018/10/05 00:12:06 133 41 169 241 326 4.1^*1 4.4e+13 6.3e+27 131 C2 C3 PHTX DST Java Movie Poor Event

2018/10/05 12:12:05 79 24 360 516 618 15.0^*1 8.4e+13 5.4e+28 80 C2 C3 PHTX DST Java Movie Poor Event

2018/10/07 14:12:06 74 13 289 355 836 26.9^*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/07 19:48:06 4 6 482 557 1182 51.8^*1 ---- ---- 2 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/07 23:12:05 148 6 532 --- --- --- ---- ---- 144 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2018/10/08 12:00:05 100 20 258 219 0 -28.8^*1 2.1e+13 7.1e+27 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/09 08:00:06 104 11 317 217 0 -37.2^*1 ---- ---- 103 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/09 13:48:05 91 36 188 129 0 -17.9^*1 2.0e+13 3.6e+27 91 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/10/10 13:25:20 141 16 248 132 0 -115.5^*1 ---- ---- 141 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/10 18:48:05 290 19 218 318 828 30.3^*1 ---- ---- 285 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/11 00:36:07 242 16 268 341 517 10.3^*1 ---- ---- 241 C2 C3 PHTX DST Java Movie Very Poor Event

2018/10/12 02:24:05 95 46 229 333 849 28.9^*1 3.5e+13 9.2e+27 96 C2 C3 PHTX DST Java Movie Only C2

2018/10/12 14:48:06 94 44 311 492 1114 50.5^*1 6.5e+13 3.1e+28 89 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/10/13 14:24:05 88 38 330 133 0 -72.0^*1 1.1e+14 6.1e+28 91 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/10/13 17:12:05 242 39 230 364 450 8.2^*1 2.5e+13 6.6e+27 247 C2 C3 PHTX DST Java Movie Poor Event

2018/10/14 00:36:05 89 38 135 215 269 3.0^*1 4.2e+12 3.9e+26 87 C2 C3 PHTX DST Java Movie Poor Event

2018/10/14 20:48:05 88 40 306 487 1010 41.3^*1 1.1e+14 5.0e+28 94 C2 C3 PHTX DST Java Movie Poor Event

2018/10/16 05:12:05 92 40 427 481 860 25.1^*1 5.7e+13 5.2e+28 105 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/10/17 03:12:09 270 59 179 145 0 -8.4^*1 2.7e+13 4.3e+27 272 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/10/17 15:05:47 114 12 570 1003 4033 689.0^*1 ---- ---- 107 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2018/10/17 16:00:05 53 107 123 172 258 2.5^*1 5.2e+14 4.0e+28 46 C2 C3 PHTX DST Java Movie Poor Event

2018/10/18 12:24:05 244 13 354 336 234 -3.6^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Poor Event

2018/10/18 18:48:05 17 9 825 1148 2759 302.1^*1 ---- ---- 19 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/19 00:24:05 79 40 151 140 0 -2.1^*1 9.0e+11 1.0e+26 86 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/22 15:36:05 292 70 194 253 600 14.5^*1 3.4e+13 6.5e+27 311 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/24 21:24:05 285 51 160 98 0 -11.6^*1 3.3e+13 4.2e+27 288 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/25 07:24:05 119 36 169 64 0 -7.6^*1 5.5e+14 7.8e+28 119 C2 C3 PHTX DST Java Movie Poor Event

2018/10/25 18:24:05 118 38 308 451 464 7.7^*1 1.2e+14 5.6e+28 116 C2 C3 PHTX DST Java Movie

2018/10/27 11:24:05 274 26 93 117 316 4.0^*1 3.0e+13 1.3e+27 268 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/27 22:24:05 103 41 62 135 991 40.6^*1 1.1e+12^*2 2.2e+25^*2 105 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/10/29 12:48:05 268 11 183 281 520 11.4^*1 ---- ---- 266 C2 C3 PHTX DST Java Movie Very Poor Event

2018/10/29 17:00:05 281 17 241 325 496 9.9^*1 ---- ---- 276 C2 C3 PHTX DST Java Movie Poor Event

2018/10/31 20:00:05 274 25 109 208 284 3.5^*1 1.1e+15 6.4e+28 268 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
2018/10/01	06:36:05	70	21	424	531	804	22.9^*1	8.9e+13	8.0e+28	83	C2 C3 PHTX DST Java Movie
2018/10/02	06:24:05	274	51	156	89	0	-11.3^*1	2.4e+14	2.9e+28	272	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/02	09:36:05	342	3	236	191	0	-40.1^*1	----	----	341	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/03	08:36:05	79	113	197	486	390	6.4^*1	5.4e+15	1.0e+30	73	C2 C3 PHTX DST Java Movie
2018/10/03	15:26:47	266	25	157	213	554	12.2^*1	2.5e+13	3.1e+27	266	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/10/04	14:24:05	268	37	189	194	214	0.5^*1	9.9e+13	1.8e+28	267	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/10/04	17:36:05	68	37	314	422	506	9.1^*1	2.9e+13	1.4e+28	77	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/10/05	00:12:06	133	41	169	241	326	4.1^*1	4.4e+13	6.3e+27	131	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/05	12:12:05	79	24	360	516	618	15.0^*1	8.4e+13	5.4e+28	80	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/07	14:12:06	74	13	289	355	836	26.9^*1	----	----	79	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/07	19:48:06	4	6	482	557	1182	51.8^*1	----	----	2	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/07	23:12:05	148	6	532	---	---	---	----	----	144	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2018/10/08	12:00:05	100	20	258	219	0	-28.8^*1	2.1e+13	7.1e+27	93	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/09	08:00:06	104	11	317	217	0	-37.2^*1	----	----	103	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/09	13:48:05	91	36	188	129	0	-17.9^*1	2.0e+13	3.6e+27	91	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/10/10	13:25:20	141	16	248	132	0	-115.5^*1	----	----	141	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/10	18:48:05	290	19	218	318	828	30.3^*1	----	----	285	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/11	00:36:07	242	16	268	341	517	10.3^*1	----	----	241	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/10/12	02:24:05	95	46	229	333	849	28.9^*1	3.5e+13	9.2e+27	96	C2 C3 PHTX DST Java Movie	Only C2
2018/10/12	14:48:06	94	44	311	492	1114	50.5^*1	6.5e+13	3.1e+28	89	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/10/13	14:24:05	88	38	330	133	0	-72.0^*1	1.1e+14	6.1e+28	91	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/10/13	17:12:05	242	39	230	364	450	8.2^*1	2.5e+13	6.6e+27	247	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/14	00:36:05	89	38	135	215	269	3.0^*1	4.2e+12	3.9e+26	87	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/14	20:48:05	88	40	306	487	1010	41.3^*1	1.1e+14	5.0e+28	94	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/16	05:12:05	92	40	427	481	860	25.1^*1	5.7e+13	5.2e+28	105	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/10/17	03:12:09	270	59	179	145	0	-8.4^*1	2.7e+13	4.3e+27	272	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/10/17	15:05:47	114	12	570	1003	4033	689.0^*1	----	----	107	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2018/10/17	16:00:05	53	107	123	172	258	2.5^*1	5.2e+14	4.0e+28	46	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/18	12:24:05	244	13	354	336	234	-3.6^*1	----	----	248	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/18	18:48:05	17	9	825	1148	2759	302.1^*1	----	----	19	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/19	00:24:05	79	40	151	140	0	-2.1^*1	9.0e+11	1.0e+26	86	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/22	15:36:05	292	70	194	253	600	14.5^*1	3.4e+13	6.5e+27	311	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/24	21:24:05	285	51	160	98	0	-11.6^*1	3.3e+13	4.2e+27	288	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/25	07:24:05	119	36	169	64	0	-7.6^*1	5.5e+14	7.8e+28	119	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/25	18:24:05	118	38	308	451	464	7.7^*1	1.2e+14	5.6e+28	116	C2 C3 PHTX DST Java Movie
2018/10/27	11:24:05	274	26	93	117	316	4.0^*1	3.0e+13	1.3e+27	268	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/27	22:24:05	103	41	62	135	991	40.6^*1	1.1e+12^*2	2.2e+25^*2	105	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/10/29	12:48:05	268	11	183	281	520	11.4^*1	----	----	266	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/10/29	17:00:05	281	17	241	325	496	9.9^*1	----	----	276	C2 C3 PHTX DST Java Movie	Poor Event
2018/10/31	20:00:05	274	25	109	208	284	3.5^*1	1.1e+15	6.4e+28	268	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).