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

2018/01/01 05:48:05 315 28 100 182 369 5.8^*1 2.4e+15 1.2e+29 301 C2 C3 PHTX DST Java Movie Very Poor Event

2018/01/02 20:12:05 48 12 377 307 0 -67.5^*1 ---- ---- 51 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/03 02:12:05 104 9 244 301 355 4.0^*1 ---- ---- 111 C2 C3 PHTX DST Java Movie Poor Event

2018/01/04 03:48:05 278 26 128 175 402 6.4^*1 4.6e+13 3.7e+27 276 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/04 20:24:05 191 39 241 394 782 25.0^*1 5.8e+13 1.7e+28 192 C2 C3 PHTX DST Java Movie Poor Event

2018/01/07 01:48:05 81 11 105 158 526 11.4^*1 ---- ---- 84 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/08 10:00:05 275 22 412 420 519 4.4^*1 3.0e+13 2.5e+28 271 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/10 07:36:05 317 10 322 509 1769 128.5^*1 ---- ---- 314 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/10 08:36:05 262 21 185 385 558 13.5^*1 8.2e+13 1.4e+28 256 C2 C3 PHTX DST Java Movie Poor Event

2018/01/11 06:48:06 311 5 179 182 254 1.4^*1 ---- ---- 309 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/12 02:00:05 65 38 235 433 525 13.2^*1 1.3e+13 3.5e+27 66 C2 C3 PHTX DST Java Movie Poor Event

2018/01/13 07:24:05 260 29 167 188 468 8.1^*1 4.4e+13 6.2e+27 256 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/13 10:36:05 52 10 290 378 483 8.6^*1 ---- ---- 57 C2 C3 PHTX DST Java Movie Poor Event

2018/01/13 11:36:05 270 42 166 138 0 -6.3^*1 3.0e+13 4.2e+27 262 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/14 15:12:08 73 18 215 89 0 -88.8^*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/14 23:24:13 298 11 314 325 486 6.0^*1 ---- ---- 293 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/15 00:48:05 308 11 288 741 2669 295.8^*1 ---- ---- 303 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2018/01/15 19:36:07 190 9 750 851 1674 98.1^*1 ---- ---- 189 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/16 00:24:07 263 38 117 93 0 -3.6^*1 3.8e+11 2.6e+25 256 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/16 06:12:05 271 17 148 191 446 8.0^*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/16 16:12:05 260 44 100 126 253 2.4^*1 4.3e+14 2.1e+28 261 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/20 14:24:05 67 12 276 233 0 -14.1^*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/21 02:48:05 249 39 163 197 395 5.7^*1 2.7e+14 3.6e+28 250 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/22 01:36:11 89 34 287 282 279 -0.3^*1 2.7e+14 1.1e+29 85 C2 C3 PHTX DST Java Movie

2018/01/22 03:12:08 275 116 462 377 359 -6.8 1.9e+15 2.0e+30 262 C2 C3 PHTX DST Java Movie

2018/01/22 10:12:05 109 21 361 394 404 2.3^*1 5.7e+14 3.7e+29 105 C2 C3 PHTX DST Java Movie

2018/01/22 13:48:05 250 26 295 391 649 16.3^*1 5.9e+12 2.6e+27 250 C2 C3 PHTX DST Java Movie Poor Event

2018/01/23 01:25:36 252 8 302 287 267 -1.2^*1 ---- ---- 250 C2 C3 PHTX DST Java Movie

2018/01/23 01:25:36 65 14 372 321 0 -23.6^*1 ---- ---- 75 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/01/23 13:25:42 247 13 244 353 849 30.1^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/23 22:36:05 247 15 218 276 494 9.9^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Poor Event

2018/01/26 00:36:05 207 12 321 294 0 -12.8^*1 ---- ---- 213 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/26 02:00:05 351 10 185 181 0 -1.9^*1 ---- ---- 347 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/26 15:12:08 18 12 183 25 0 -101.5^*1 ---- ---- 18 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/01/28 18:12:05 292 46 257 426 662 17.8^*1 2.6e+14 8.5e+28 298 C2 C3 PHTX DST Java Movie Poor Event

2018/01/29 16:24:05 311 89 107 150 262 2.7^*1 6.8e+13 3.9e+27 298 C2 C3 PHTX DST Java Movie Very Poor Event

2018/01/30 04:36:05 292 35 217 261 382 5.0^*1 3.9e+12 9.2e+26 280 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
2018/01/01	05:48:05	315	28	100	182	369	5.8^*1	2.4e+15	1.2e+29	301	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/01/02	20:12:05	48	12	377	307	0	-67.5^*1	----	----	51	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/03	02:12:05	104	9	244	301	355	4.0^*1	----	----	111	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/04	03:48:05	278	26	128	175	402	6.4^*1	4.6e+13	3.7e+27	276	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/04	20:24:05	191	39	241	394	782	25.0^*1	5.8e+13	1.7e+28	192	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/07	01:48:05	81	11	105	158	526	11.4^*1	----	----	84	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/08	10:00:05	275	22	412	420	519	4.4^*1	3.0e+13	2.5e+28	271	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/10	07:36:05	317	10	322	509	1769	128.5^*1	----	----	314	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/10	08:36:05	262	21	185	385	558	13.5^*1	8.2e+13	1.4e+28	256	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/11	06:48:06	311	5	179	182	254	1.4^*1	----	----	309	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/12	02:00:05	65	38	235	433	525	13.2^*1	1.3e+13	3.5e+27	66	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/13	07:24:05	260	29	167	188	468	8.1^*1	4.4e+13	6.2e+27	256	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/13	10:36:05	52	10	290	378	483	8.6^*1	----	----	57	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/13	11:36:05	270	42	166	138	0	-6.3^*1	3.0e+13	4.2e+27	262	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/14	15:12:08	73	18	215	89	0	-88.8^*1	----	----	75	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/14	23:24:13	298	11	314	325	486	6.0^*1	----	----	293	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/15	00:48:05	308	11	288	741	2669	295.8^*1	----	----	303	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2018/01/15	19:36:07	190	9	750	851	1674	98.1^*1	----	----	189	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/16	00:24:07	263	38	117	93	0	-3.6^*1	3.8e+11	2.6e+25	256	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/16	06:12:05	271	17	148	191	446	8.0^*1	----	----	268	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/16	16:12:05	260	44	100	126	253	2.4^*1	4.3e+14	2.1e+28	261	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/20	14:24:05	67	12	276	233	0	-14.1^*1	----	----	75	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/21	02:48:05	249	39	163	197	395	5.7^*1	2.7e+14	3.6e+28	250	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/22	01:36:11	89	34	287	282	279	-0.3^*1	2.7e+14	1.1e+29	85	C2 C3 PHTX DST Java Movie
2018/01/22	03:12:08	275	116	462	377	359	-6.8	1.9e+15	2.0e+30	262	C2 C3 PHTX DST Java Movie
2018/01/22	10:12:05	109	21	361	394	404	2.3^*1	5.7e+14	3.7e+29	105	C2 C3 PHTX DST Java Movie
2018/01/22	13:48:05	250	26	295	391	649	16.3^*1	5.9e+12	2.6e+27	250	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/23	01:25:36	252	8	302	287	267	-1.2^*1	----	----	250	C2 C3 PHTX DST Java Movie
2018/01/23	01:25:36	65	14	372	321	0	-23.6^*1	----	----	75	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/01/23	13:25:42	247	13	244	353	849	30.1^*1	----	----	248	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/23	22:36:05	247	15	218	276	494	9.9^*1	----	----	248	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/26	00:36:05	207	12	321	294	0	-12.8^*1	----	----	213	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/26	02:00:05	351	10	185	181	0	-1.9^*1	----	----	347	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/26	15:12:08	18	12	183	25	0	-101.5^*1	----	----	18	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/01/28	18:12:05	292	46	257	426	662	17.8^*1	2.6e+14	8.5e+28	298	C2 C3 PHTX DST Java Movie	Poor Event
2018/01/29	16:24:05	311	89	107	150	262	2.7^*1	6.8e+13	3.9e+27	298	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/01/30	04:36:05	292	35	217	261	382	5.0^*1	3.9e+12	9.2e+26	280	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).