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

2017/11/01 01:36:13 253 11 142 320 706 20.7^*1 ---- ---- 255 C2 C3 PHTX DST Java Movie Poor Event

2017/11/01 03:48:06 143 10 254 435 1522 95.9^*1 ---- ---- 139 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/01 19:36:05 201 8 441 427 0 -12.6^*1 ---- ---- 203 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/02 00:48:05 243 25 181 281 750 23.1^*1 4.0e+13 6.5e+27 246 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/03 02:00:05 267 59 160 247 319 4.0^*1 1.9e+15 2.5e+29 261 C2 C3 PHTX DST Java Movie

2017/11/03 23:12:12 250 29 208 269 384 5.3^*1 1.1e+14 2.4e+28 257 C2 C3 PHTX DST Java Movie Poor Event

2017/11/04 12:12:05 74 59 153 157 188 0.5^*1 3.3e+14 3.9e+28 66 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/08 08:24:05 107 33 252 797 766 25.9^*1 6.9e+14 2.2e+29 104 C2 C3 PHTX DST Java Movie Poor Event

2017/11/08 13:25:41 274 78 142 327 295 3.7^*1 5.0e+15 5.0e+29 264 C2 C3 PHTX DST Java Movie

2017/11/10 06:23:27 287 56 321 394 422 5.2^*1 2.8e+15 1.4e+30 290 C2 C3 PHTX DST Java Movie Poor Event

2017/11/10 07:24:05 16 6 232 181 0 -15.0^*1 ---- ---- 18 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/10 08:00:05 110 121 405 654 576 12.5 6.3e+15^*2 5.2e+30^*2 82 C2 C3 PHTX DST Java Movie Partial Halo

2017/11/11 01:25:20 295 23 153 280 621 16.1^*1 1.7e+14 1.9e+28 293 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/11 21:25:03 70 9 407 522 905 30.6^*1 ---- ---- 79 C2 C3 PHTX DST Java Movie Poor Event

2017/11/12 13:25:18 307 20 244 305 548 11.1^*1 1.3e+14 3.9e+28 303 C2 C3 PHTX DST Java Movie Only C2

2017/11/13 12:24:05 89 52 144 87 0 -18.4^*1 1.0e+12 1.1e+26 99 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/13 18:45:30 93 57 232 298 757 22.6^*1 4.5e+13 1.2e+28 96 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/14 00:01:25 33 60 140 156 219 1.4^*1 2.5e+13 2.5e+27 44 C2 C3 PHTX DST Java Movie Very Poor Event

2017/11/14 20:57:21 104 22 126 63 0 -14.8^*1 1.6e+13 1.2e+27 103 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/15 08:24:05 45 14 168 193 311 3.3^*1 ---- ---- 43 C2 C3 PHTX DST Java Movie Very Poor Event

2017/11/15 12:24:05 278 42 406 296 0 -42.4^*1 1.1e+14 9.3e+28 280 C2 C3 PHTX DST Java Movie Very Poor Event

2017/11/16 02:48:06 13 11 391 685 2191 197.2^*1 ---- ---- 17 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/16 12:48:05 347 11 564 1341 3486 509.7^*1 ---- ---- 347 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2017/11/16 13:36:05 92 54 283 346 681 17.1^*1 6.1e+13 2.4e+28 99 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/16 20:00:05 99 93 365 434 440 4.2 2.7e+15 1.8e+30 113 C2 C3 PHTX DST Java Movie

2017/11/17 02:00:05 165 12 561 744 1768 127.5^*1 ---- ---- 163 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2

2017/11/17 07:36:06 126 43 189 205 255 1.5^*1 2.3e+14 4.0e+28 118 C2 C3 PHTX DST Java Movie Poor Event

2017/11/18 12:12:05 61 24 154 156 192 0.6^*1 3.3e+13 3.9e+27 62 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/19 01:25:22 257 25 212 302 398 6.0^*1 2.5e+14 5.7e+28 260 C2 C3 PHTX DST Java Movie

2017/11/19 08:48:05 12 5 177 245 1204 59.3^*1 ---- ---- 14 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2017/11/19 21:12:09 58 17 290 340 388 4.4^*1 ---- ---- 64 C2 C3 PHTX DST Java Movie Very Poor Event

2017/11/20 14:12:05 101 9 647 672 818 11.7^*1 ---- ---- 98 C2 C3 PHTX DST Java Movie

2017/11/20 23:06:12 277 93 146 44 0 -29.9^*1 2.7e+14 2.9e+28 280 C2 C3 PHTX DST Java Movie Poor Event; Only C3

2017/11/21 02:48:05 267 31 236 182 0 -15.1^*1 2.6e+13 7.2e+27 276 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/21 11:12:06 96 9 646 598 0 -23.5^*1 ---- ---- 98 C2 C3 PHTX DST Java Movie Poor Event

2017/11/21 15:12:09 66 50 202 262 439 7.1^*1 1.0e+14 2.1e+28 73 C2 C3 PHTX DST Java Movie Poor Event

2017/11/22 19:12:05 243 10 335 305 0 -10.1^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/22 20:12:05 294 22 305 329 483 6.3^*1 4.8e+13 2.2e+28 285 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/23 02:48:05 41 18 352 494 1450 84.8^*1 ---- ---- 48 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/23 07:12:05 51 23 499 535 592 5.7^*1 5.2e+14 6.5e+29 61 C2 C3 PHTX DST Java Movie

2017/11/23 14:48:05 60 11 206 247 455 7.4^*1 ---- ---- 67 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/24 05:36:05 52 16 202 53 0 -42.4^*1 ---- ---- 59 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/25 06:48:05 57 115 328 338 337 0.5 6.2e+15 3.3e+30 77 C2 C3 PHTX DST Java Movie

2017/11/25 22:00:05 73 69 150 211 487 9.5^*1 3.7e+13 4.2e+27 67 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/26 14:36:05 63 9 249 313 979 38.0^*1 ---- ---- 62 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/27 23:12:11 179 6 440 335 0 -74.8^*1 ---- ---- 180 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2017/11/28 19:48:05 96 32 315 398 492 8.5^*1 2.3e+14 1.1e+29 94 C2 C3 PHTX DST Java Movie Poor Event

2017/11/28 20:57:30 56 9 204 166 0 -31.7^*1 ---- ---- 60 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2017/11/29 04:48:05 107 9 252 263 295 1.3^*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Very Poor Event

2017/11/29 09:48:05 287 88 146 463 407 7.0^*1 7.7e+15 8.2e+29 304 C2 C3 PHTX DST Java Movie

2017/11/29 23:36:05 264 11 350 313 0 -6.8^*1 ---- ---- 259 C2 C3 PHTX DST Java Movie

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
2017/11/01	01:36:13	253	11	142	320	706	20.7^*1	----	----	255	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/01	03:48:06	143	10	254	435	1522	95.9^*1	----	----	139	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/01	19:36:05	201	8	441	427	0	-12.6^*1	----	----	203	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/02	00:48:05	243	25	181	281	750	23.1^*1	4.0e+13	6.5e+27	246	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/03	02:00:05	267	59	160	247	319	4.0^*1	1.9e+15	2.5e+29	261	C2 C3 PHTX DST Java Movie
2017/11/03	23:12:12	250	29	208	269	384	5.3^*1	1.1e+14	2.4e+28	257	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/04	12:12:05	74	59	153	157	188	0.5^*1	3.3e+14	3.9e+28	66	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/08	08:24:05	107	33	252	797	766	25.9^*1	6.9e+14	2.2e+29	104	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/08	13:25:41	274	78	142	327	295	3.7^*1	5.0e+15	5.0e+29	264	C2 C3 PHTX DST Java Movie
2017/11/10	06:23:27	287	56	321	394	422	5.2^*1	2.8e+15	1.4e+30	290	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/10	07:24:05	16	6	232	181	0	-15.0^*1	----	----	18	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/10	08:00:05	110	121	405	654	576	12.5	6.3e+15^*2	5.2e+30^*2	82	C2 C3 PHTX DST Java Movie	Partial Halo
2017/11/11	01:25:20	295	23	153	280	621	16.1^*1	1.7e+14	1.9e+28	293	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/11	21:25:03	70	9	407	522	905	30.6^*1	----	----	79	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/12	13:25:18	307	20	244	305	548	11.1^*1	1.3e+14	3.9e+28	303	C2 C3 PHTX DST Java Movie	Only C2
2017/11/13	12:24:05	89	52	144	87	0	-18.4^*1	1.0e+12	1.1e+26	99	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/13	18:45:30	93	57	232	298	757	22.6^*1	4.5e+13	1.2e+28	96	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/14	00:01:25	33	60	140	156	219	1.4^*1	2.5e+13	2.5e+27	44	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/11/14	20:57:21	104	22	126	63	0	-14.8^*1	1.6e+13	1.2e+27	103	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/15	08:24:05	45	14	168	193	311	3.3^*1	----	----	43	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/11/15	12:24:05	278	42	406	296	0	-42.4^*1	1.1e+14	9.3e+28	280	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/11/16	02:48:06	13	11	391	685	2191	197.2^*1	----	----	17	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/16	12:48:05	347	11	564	1341	3486	509.7^*1	----	----	347	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2017/11/16	13:36:05	92	54	283	346	681	17.1^*1	6.1e+13	2.4e+28	99	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/16	20:00:05	99	93	365	434	440	4.2	2.7e+15	1.8e+30	113	C2 C3 PHTX DST Java Movie
2017/11/17	02:00:05	165	12	561	744	1768	127.5^*1	----	----	163	C2 C3 PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
2017/11/17	07:36:06	126	43	189	205	255	1.5^*1	2.3e+14	4.0e+28	118	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/18	12:12:05	61	24	154	156	192	0.6^*1	3.3e+13	3.9e+27	62	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/19	01:25:22	257	25	212	302	398	6.0^*1	2.5e+14	5.7e+28	260	C2 C3 PHTX DST Java Movie
2017/11/19	08:48:05	12	5	177	245	1204	59.3^*1	----	----	14	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2017/11/19	21:12:09	58	17	290	340	388	4.4^*1	----	----	64	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/11/20	14:12:05	101	9	647	672	818	11.7^*1	----	----	98	C2 C3 PHTX DST Java Movie
2017/11/20	23:06:12	277	93	146	44	0	-29.9^*1	2.7e+14	2.9e+28	280	C2 C3 PHTX DST Java Movie	Poor Event; Only C3
2017/11/21	02:48:05	267	31	236	182	0	-15.1^*1	2.6e+13	7.2e+27	276	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/21	11:12:06	96	9	646	598	0	-23.5^*1	----	----	98	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/21	15:12:09	66	50	202	262	439	7.1^*1	1.0e+14	2.1e+28	73	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/22	19:12:05	243	10	335	305	0	-10.1^*1	----	----	248	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/22	20:12:05	294	22	305	329	483	6.3^*1	4.8e+13	2.2e+28	285	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/23	02:48:05	41	18	352	494	1450	84.8^*1	----	----	48	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/23	07:12:05	51	23	499	535	592	5.7^*1	5.2e+14	6.5e+29	61	C2 C3 PHTX DST Java Movie
2017/11/23	14:48:05	60	11	206	247	455	7.4^*1	----	----	67	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/24	05:36:05	52	16	202	53	0	-42.4^*1	----	----	59	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/25	06:48:05	57	115	328	338	337	0.5	6.2e+15	3.3e+30	77	C2 C3 PHTX DST Java Movie
2017/11/25	22:00:05	73	69	150	211	487	9.5^*1	3.7e+13	4.2e+27	67	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/26	14:36:05	63	9	249	313	979	38.0^*1	----	----	62	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/27	23:12:11	179	6	440	335	0	-74.8^*1	----	----	180	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2017/11/28	19:48:05	96	32	315	398	492	8.5^*1	2.3e+14	1.1e+29	94	C2 C3 PHTX DST Java Movie	Poor Event
2017/11/28	20:57:30	56	9	204	166	0	-31.7^*1	----	----	60	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2017/11/29	04:48:05	107	9	252	263	295	1.3^*1	----	----	104	C2 C3 PHTX DST Java Movie	Very Poor Event
2017/11/29	09:48:05	287	88	146	463	407	7.0^*1	7.7e+15	8.2e+29	304	C2 C3 PHTX DST Java Movie
2017/11/29	23:36:05	264	11	350	313	0	-6.8^*1	----	----	259	C2 C3 PHTX DST Java Movie

*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).