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

2018/11/01 10:00:05 278 30 143 238 383 6.1^*1 8.7e+12 8.9e+26 282 C2 C3 PHTX DST Java Movie Poor Event

2018/11/01 18:48:05 72 17 149 147 143 -0.1^*1 ---- ---- 76 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/02 05:24:05 77 27 330 480 681 18.0^*1 7.2e+13 3.9e+28 79 C2 C3 PHTX DST Java Movie Poor Event

2018/11/02 16:00:06 275 46 276 50 0 -45.2^*1 4.4e+13 1.7e+28 270 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/11/03 07:24:05 273 27 278 246 0 -16.8^*1 8.8e+12 3.4e+27 271 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/04 03:06:05 242 15 283 139 0 -173.5^*1 ---- ---- 246 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/04 05:24:05 190 4 502 509 637 6.7^*1 ---- ---- 190 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/04 06:24:05 83 40 220 224 263 0.9^*1 1.1e+14 2.6e+28 85 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/04 08:24:05 248 12 278 259 97 -3.9^*1 ---- ---- 244 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/04 22:12:05 234 22 268 311 401 5.0^*1 3.3e+12 1.2e+27 239 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/04 22:36:05 282 9 369 480 712 20.3^*1 ---- ---- 276 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/06 01:25:18 84 47 183 123 0 -13.1^*1 6.7e+13 1.1e+28 87 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/11/09 15:48:05 86 25 244 288 670 16.9^*1 3.1e+13 9.2e+27 86 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/10 03:36:05 297 23 369 559 1277 67.7^*1 5.7e+13 3.9e+28 283 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/11/10 17:00:05 246 24 167 178 300 2.7^*1 2.5e+13 3.4e+27 243 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/12 16:48:05 242 22 263 336 726 20.8^*1 2.3e+12 7.9e+26 240 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/13 02:24:06 288 31 350 433 522 8.3^*1 6.7e+13 4.1e+28 287 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/13 05:36:05 279 20 263 492 680 20.0^*1 8.7e+13 3.0e+28 284 C2 C3 PHTX DST Java Movie Poor Event

2018/11/13 17:42:05 277 20 405 425 442 2.5^*1 2.3e+13 1.9e+28 279 C2 C3 PHTX DST Java Movie Poor Event; Only C3

2018/11/16 06:36:05 236 7 309 389 1034 42.2^*1 ---- ---- 238 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/17 20:57:26 114 31 365 463 520 8.5^*1 6.7e+13 4.5e+28 118 C2 C3 PHTX DST Java Movie Poor Event

2018/11/18 02:00:05 270 40 127 114 0 -4.2^*1 4.1e+13 3.3e+27 264 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/19 22:24:05 269 42 134 153 286 2.8^*1 1.7e+14 1.5e+28 272 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/20 14:48:05 273 28 251 207 0 -10.0^*1 2.2e+13 6.9e+27 270 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/21 01:36:13 267 23 223 256 513 9.5^*1 2.2e+13 5.5e+27 270 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/21 22:36:05 212 9 198 372 1644 113.7^*1 ---- ---- 212 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2018/11/23 20:16:56 106 27 147 155 297 3.0^*1 2.3e+13 2.5e+27 107 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/11/24 06:00:05 276 16 267 248 205 -1.9^*1 ---- ---- 267 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/25 12:48:05 244 9 267 404 1481 89.3^*1 ---- ---- 248 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2018/11/25 20:56:53 343 8 407 493 1603 102.8^*1 ---- ---- 343 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2018/11/29 07:48:05 273 16 225 293 607 16.3^*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Very Poor Event

2018/11/30 07:36:05 196 117 131 144 242 1.8^*1 1.7e+14 1.5e+28 186 C2 C3 PHTX DST Java Movie 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
2018/11/01	10:00:05	278	30	143	238	383	6.1^*1	8.7e+12	8.9e+26	282	C2 C3 PHTX DST Java Movie	Poor Event
2018/11/01	18:48:05	72	17	149	147	143	-0.1^*1	----	----	76	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/02	05:24:05	77	27	330	480	681	18.0^*1	7.2e+13	3.9e+28	79	C2 C3 PHTX DST Java Movie	Poor Event
2018/11/02	16:00:06	275	46	276	50	0	-45.2^*1	4.4e+13	1.7e+28	270	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/11/03	07:24:05	273	27	278	246	0	-16.8^*1	8.8e+12	3.4e+27	271	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/04	03:06:05	242	15	283	139	0	-173.5^*1	----	----	246	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/04	05:24:05	190	4	502	509	637	6.7^*1	----	----	190	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/04	06:24:05	83	40	220	224	263	0.9^*1	1.1e+14	2.6e+28	85	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/04	08:24:05	248	12	278	259	97	-3.9^*1	----	----	244	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/04	22:12:05	234	22	268	311	401	5.0^*1	3.3e+12	1.2e+27	239	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/04	22:36:05	282	9	369	480	712	20.3^*1	----	----	276	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/06	01:25:18	84	47	183	123	0	-13.1^*1	6.7e+13	1.1e+28	87	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/11/09	15:48:05	86	25	244	288	670	16.9^*1	3.1e+13	9.2e+27	86	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/10	03:36:05	297	23	369	559	1277	67.7^*1	5.7e+13	3.9e+28	283	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/11/10	17:00:05	246	24	167	178	300	2.7^*1	2.5e+13	3.4e+27	243	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/12	16:48:05	242	22	263	336	726	20.8^*1	2.3e+12	7.9e+26	240	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/13	02:24:06	288	31	350	433	522	8.3^*1	6.7e+13	4.1e+28	287	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/13	05:36:05	279	20	263	492	680	20.0^*1	8.7e+13	3.0e+28	284	C2 C3 PHTX DST Java Movie	Poor Event
2018/11/13	17:42:05	277	20	405	425	442	2.5^*1	2.3e+13	1.9e+28	279	C2 C3 PHTX DST Java Movie	Poor Event; Only C3
2018/11/16	06:36:05	236	7	309	389	1034	42.2^*1	----	----	238	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/17	20:57:26	114	31	365	463	520	8.5^*1	6.7e+13	4.5e+28	118	C2 C3 PHTX DST Java Movie	Poor Event
2018/11/18	02:00:05	270	40	127	114	0	-4.2^*1	4.1e+13	3.3e+27	264	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/19	22:24:05	269	42	134	153	286	2.8^*1	1.7e+14	1.5e+28	272	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/20	14:48:05	273	28	251	207	0	-10.0^*1	2.2e+13	6.9e+27	270	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/21	01:36:13	267	23	223	256	513	9.5^*1	2.2e+13	5.5e+27	270	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/21	22:36:05	212	9	198	372	1644	113.7^*1	----	----	212	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2018/11/23	20:16:56	106	27	147	155	297	3.0^*1	2.3e+13	2.5e+27	107	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/11/24	06:00:05	276	16	267	248	205	-1.9^*1	----	----	267	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/25	12:48:05	244	9	267	404	1481	89.3^*1	----	----	248	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2018/11/25	20:56:53	343	8	407	493	1603	102.8^*1	----	----	343	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2018/11/29	07:48:05	273	16	225	293	607	16.3^*1	----	----	268	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/11/30	07:36:05	196	117	131	144	242	1.8^*1	1.7e+14	1.5e+28	186	C2 C3 PHTX DST Java Movie	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).