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

2018/07/01 03:36:05 92 48 85 154 248 2.6^*1 1.1e+14 4.1e+27 93 C2 C3 PHTX DST Java Movie Poor Event

2018/07/02 14:48:05 280 46 219 254 669 16.9^*1 1.1e+13 2.7e+27 273 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/03 09:36:05 287 37 58 30 0 -1.5^*1 3.4e+14 5.7e+27 295 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/05 08:36:05 91 47 202 231 556 11.6^*1 1.3e+13 2.7e+27 98 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/05 11:24:07 277 84 572 730 648 9.9 6.7e+15 1.1e+31 266 C2 C3 PHTX DST Java Movie

2018/07/05 22:24:05 94 54 225 106 0 -29.9^*1 2.4e+13 6.1e+27 97 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/07/06 17:48:05 288 49 258 263 268 0.3^*1 6.4e+12 2.1e+27 285 C2 C3 PHTX DST Java Movie Poor Event

2018/07/06 23:12:11 95 46 206 346 510 10.9^*1 1.5e+14 3.1e+28 101 C2 C3 PHTX DST Java Movie Poor Event

2018/07/08 07:24:05 276 18 264 348 742 21.2^*1 ---- ---- 274 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/07/10 05:24:05 110 15 159 69 0 -22.3^*1 ---- ---- 113 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/10 23:12:09 316 8 241 398 1803 138.5^*1 ---- ---- 310 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2018/07/11 03:24:05 163 6 675 873 2187 188.0^*1 ---- ---- 160 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/11 15:37:17 72 10 145 129 0 -2.4^*1 ---- ---- 68 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/11 21:48:05 89 13 53 64 235 2.2^*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/12 01:48:05 94 42 213 191 0 -13.0^*1 1.7e+13 3.8e+27 89 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/12 16:12:05 119 10 235 211 0 -10.6^*1 ---- ---- 114 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/14 00:48:07 245 31 192 245 557 12.3^*1 2.1e+14 3.9e+28 249 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/07/14 03:36:05 253 46 234 232 222 -0.3^*1 3.6e+14 9.9e+28 254 C2 C3 PHTX DST Java Movie Poor Event

2018/07/16 00:12:07 79 22 145 137 89 -0.7^*1 3.6e+13 3.8e+27 77 C2 C3 PHTX DST Java Movie Very Poor Event

2018/07/16 03:48:05 270 11 180 186 327 3.2^*1 ---- ---- 273 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/16 10:24:05 266 18 166 113 0 -10.3^*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/07/17 13:25:45 342 7 648 511 0 -205.7^*1 ---- ---- 339 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2

2018/07/17 22:24:06 339 14 666 697 970 22.9^*1 ---- ---- 336 C2 C3 PHTX DST Java Movie Poor Event; Only 3 points; Only C2

2018/07/18 00:12:05 272 18 174 237 281 2.9^*1 ---- ---- 263 C2 C3 PHTX DST Java Movie Poor Event

2018/07/20 22:24:05 288 15 218 234 414 5.4^*1 ---- ---- 285 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2018/07/21 14:00:05 115 8 159 45 0 -35.5^*1 ---- ---- 109 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/22 15:36:05 350 5 628 1054 3793 590.7^*1 ---- ---- 352 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2018/07/23 03:36:05 6 14 439 286 0 -107.4^*1 ---- ---- 11 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/23 20:48:05 283 26 263 228 38 -3.5^*1 2.6e+13 8.8e+27 278 C2 C3 PHTX DST Java Movie Poor Event

2018/07/25 14:00:05 292 23 274 365 490 8.8^*1 2.8e+12 1.0e+27 281 C2 C3 PHTX DST Java Movie Very Poor Event

2018/07/26 03:48:07 297 8 248 179 0 -24.5^*1 ---- ---- 284 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/26 23:48:05 231 11 220 268 842 28.2^*1 ---- ---- 232 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/27 00:48:06 96 66 376 468 785 22.0^*1 1.1e+14 7.9e+28 105 C2 C3 PHTX DST Java Movie Poor Event

2018/07/27 07:36:05 80 29 85 110 250 2.5^*1 1.3e+13 4.7e+26 85 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/27 20:48:05 96 47 192 317 576 13.7^*1 1.4e+14 2.7e+28 97 C2 C3 PHTX DST Java Movie Very Poor Event

2018/07/28 04:12:05 291 8 170 247 522 11.5^*1 ---- ---- 284 C2 C3 PHTX DST Java Movie Very Poor Event

2018/07/29 15:24:05 240 10 280 434 1088 49.4^*1 ---- ---- 243 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/30 15:36:40 110 10 234 304 731 20.7^*1 ---- ---- 108 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2018/07/30 16:36:05 246 13 206 256 527 10.5^*1 ---- ---- 249 C2 C3 PHTX DST Java Movie Very 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
2018/07/01	03:36:05	92	48	85	154	248	2.6^*1	1.1e+14	4.1e+27	93	C2 C3 PHTX DST Java Movie	Poor Event
2018/07/02	14:48:05	280	46	219	254	669	16.9^*1	1.1e+13	2.7e+27	273	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/03	09:36:05	287	37	58	30	0	-1.5^*1	3.4e+14	5.7e+27	295	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/05	08:36:05	91	47	202	231	556	11.6^*1	1.3e+13	2.7e+27	98	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/05	11:24:07	277	84	572	730	648	9.9	6.7e+15	1.1e+31	266	C2 C3 PHTX DST Java Movie
2018/07/05	22:24:05	94	54	225	106	0	-29.9^*1	2.4e+13	6.1e+27	97	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/07/06	17:48:05	288	49	258	263	268	0.3^*1	6.4e+12	2.1e+27	285	C2 C3 PHTX DST Java Movie	Poor Event
2018/07/06	23:12:11	95	46	206	346	510	10.9^*1	1.5e+14	3.1e+28	101	C2 C3 PHTX DST Java Movie	Poor Event
2018/07/08	07:24:05	276	18	264	348	742	21.2^*1	----	----	274	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/07/10	05:24:05	110	15	159	69	0	-22.3^*1	----	----	113	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/10	23:12:09	316	8	241	398	1803	138.5^*1	----	----	310	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2018/07/11	03:24:05	163	6	675	873	2187	188.0^*1	----	----	160	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/11	15:37:17	72	10	145	129	0	-2.4^*1	----	----	68	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/11	21:48:05	89	13	53	64	235	2.2^*1	----	----	93	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/12	01:48:05	94	42	213	191	0	-13.0^*1	1.7e+13	3.8e+27	89	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/12	16:12:05	119	10	235	211	0	-10.6^*1	----	----	114	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/14	00:48:07	245	31	192	245	557	12.3^*1	2.1e+14	3.9e+28	249	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/07/14	03:36:05	253	46	234	232	222	-0.3^*1	3.6e+14	9.9e+28	254	C2 C3 PHTX DST Java Movie	Poor Event
2018/07/16	00:12:07	79	22	145	137	89	-0.7^*1	3.6e+13	3.8e+27	77	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/07/16	03:48:05	270	11	180	186	327	3.2^*1	----	----	273	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/16	10:24:05	266	18	166	113	0	-10.3^*1	----	----	265	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/07/17	13:25:45	342	7	648	511	0	-205.7^*1	----	----	339	C2 C3 PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
2018/07/17	22:24:06	339	14	666	697	970	22.9^*1	----	----	336	C2 C3 PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
2018/07/18	00:12:05	272	18	174	237	281	2.9^*1	----	----	263	C2 C3 PHTX DST Java Movie	Poor Event
2018/07/20	22:24:05	288	15	218	234	414	5.4^*1	----	----	285	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2018/07/21	14:00:05	115	8	159	45	0	-35.5^*1	----	----	109	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/22	15:36:05	350	5	628	1054	3793	590.7^*1	----	----	352	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2018/07/23	03:36:05	6	14	439	286	0	-107.4^*1	----	----	11	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/23	20:48:05	283	26	263	228	38	-3.5^*1	2.6e+13	8.8e+27	278	C2 C3 PHTX DST Java Movie	Poor Event
2018/07/25	14:00:05	292	23	274	365	490	8.8^*1	2.8e+12	1.0e+27	281	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/07/26	03:48:07	297	8	248	179	0	-24.5^*1	----	----	284	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/26	23:48:05	231	11	220	268	842	28.2^*1	----	----	232	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/27	00:48:06	96	66	376	468	785	22.0^*1	1.1e+14	7.9e+28	105	C2 C3 PHTX DST Java Movie	Poor Event
2018/07/27	07:36:05	80	29	85	110	250	2.5^*1	1.3e+13	4.7e+26	85	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/27	20:48:05	96	47	192	317	576	13.7^*1	1.4e+14	2.7e+28	97	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/07/28	04:12:05	291	8	170	247	522	11.5^*1	----	----	284	C2 C3 PHTX DST Java Movie	Very Poor Event
2018/07/29	15:24:05	240	10	280	434	1088	49.4^*1	----	----	243	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/30	15:36:40	110	10	234	304	731	20.7^*1	----	----	108	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2018/07/30	16:36:05	246	13	206	256	527	10.5^*1	----	----	249	C2 C3 PHTX DST Java Movie	Very 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).