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

2019/02/01 00:12:05 247 10 330 310 203 -4.0^*1 ---- ---- 253 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/01 00:12:05 97 16 156 108 0 -16.8^*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/02 02:36:06 92 19 114 231 373 5.8^*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/03 08:00:06 262 38 207 293 424 6.9^*1 1.0e+13 2.2e+27 260 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/03 13:48:05 200 6 263 101 0 -103.6^*1 ---- ---- 201 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/03 15:24:05 89 13 66 56 0 -2.9^*1 ---- ---- 92 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/06 04:00:05 66 23 445 702 1844 141.6^*1 2.6e+13 2.5e+28 70 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/07 02:36:05 254 32 298 384 468 7.1^*1 3.4e+14 1.5e+29 259 C2 C3 PHTX DST Java Movie

2019/02/07 22:00:05 84 32 158 288 796 26.7^*1 1.2e+13 1.5e+27 90 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/08 00:36:05 121 15 185 213 325 3.6^*1 ---- ---- 121 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/08 19:12:05 274 47 209 237 293 2.2^*1 1.4e+14 3.0e+28 274 C2 C3 PHTX DST Java Movie Poor Event

2019/02/11 14:12:05 4 8 522 248 0 -157.7^*1 ---- ---- 6 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/02/11 23:12:11 5 12 732 328 0 -564.3^*1 ---- ---- 7 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2019/02/12 12:36:05 104 64 86 193 208 1.9^*1 7.3e+14 2.7e+28 103 C2 C3 PHTX DST Java Movie Poor Event

2019/02/12 20:42:06 114 15 321 264 0 -17.7^*1 ---- ---- 117 C2 C3 PHTX DST Java Movie Very Poor Event; Only C3

2019/02/14 16:00:05 90 19 236 384 1049 45.2^*1 ---- ---- 93 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/15 00:24:05 273 49 96 173 524 11.9^*1 1.8e+13 8.3e+26 271 C2 PHTX DST Java Movie Poor Event; Only C2

2019/02/15 15:48:05 254 19 358 475 1091 47.0^*1 ---- ---- 257 C2 PHTX DST Java Movie Poor Event; Only C2

2019/02/17 17:36:05 102 15 248 286 500 8.5^*1 ---- ---- 104 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/02/17 23:36:07 271 18 208 269 264 1.9^*1 ---- ---- 272 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/19 00:12:05 265 19 231 358 796 30.1^*1 ---- ---- 260 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/20 04:00:05 82 41 237 300 469 7.7^*1 1.9e+14 5.4e+28 85 C2 PHTX DST Java Movie Poor Event

2019/02/21 02:24:07 219 9 318 81 0 -175.5^*1 ---- ---- 219 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/21 03:12:10 76 10 194 286 453 8.7^*1 ---- ---- 83 C3 PHTX DST Java Movie Very Poor Event

2019/02/21 14:24:06 83 16 211 206 112 -1.5^*1 ---- ---- 80 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/22 10:36:05 103 10 217 276 770 23.3^*1 ---- ---- 101 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/24 01:25:43 273 86 357 397 402 2.4 1.9e+15 1.2e+30 287 C2 C3 PHTX DST Java Movie

2019/02/25 12:36:05 275 17 296 375 613 13.9^*1 ---- ---- 268 C2 C3 PHTX DST Java Movie Very Poor Event

2019/02/26 23:12:09 171 11 521 460 0 -55.8^*1 ---- ---- 166 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/02/27 17:24:06 259 52 387 500 559 9.6^*1 5.1e+14 3.8e+29 255 C2 C3 PHTX DST Java Movie

2019/02/28 04:12:05 71 26 93 46 0 -7.6^*1 4.1e+13 1.8e+27 81 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
2019/02/01	00:12:05	247	10	330	310	203	-4.0^*1	----	----	253	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/01	00:12:05	97	16	156	108	0	-16.8^*1	----	----	94	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/02	02:36:06	92	19	114	231	373	5.8^*1	----	----	94	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/03	08:00:06	262	38	207	293	424	6.9^*1	1.0e+13	2.2e+27	260	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/03	13:48:05	200	6	263	101	0	-103.6^*1	----	----	201	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/03	15:24:05	89	13	66	56	0	-2.9^*1	----	----	92	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/06	04:00:05	66	23	445	702	1844	141.6^*1	2.6e+13	2.5e+28	70	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/07	02:36:05	254	32	298	384	468	7.1^*1	3.4e+14	1.5e+29	259	C2 C3 PHTX DST Java Movie
2019/02/07	22:00:05	84	32	158	288	796	26.7^*1	1.2e+13	1.5e+27	90	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/08	00:36:05	121	15	185	213	325	3.6^*1	----	----	121	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/08	19:12:05	274	47	209	237	293	2.2^*1	1.4e+14	3.0e+28	274	C2 C3 PHTX DST Java Movie	Poor Event
2019/02/11	14:12:05	4	8	522	248	0	-157.7^*1	----	----	6	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/02/11	23:12:11	5	12	732	328	0	-564.3^*1	----	----	7	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2019/02/12	12:36:05	104	64	86	193	208	1.9^*1	7.3e+14	2.7e+28	103	C2 C3 PHTX DST Java Movie	Poor Event
2019/02/12	20:42:06	114	15	321	264	0	-17.7^*1	----	----	117	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C3
2019/02/14	16:00:05	90	19	236	384	1049	45.2^*1	----	----	93	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/15	00:24:05	273	49	96	173	524	11.9^*1	1.8e+13	8.3e+26	271	C2 PHTX DST Java Movie	Poor Event; Only C2
2019/02/15	15:48:05	254	19	358	475	1091	47.0^*1	----	----	257	C2 PHTX DST Java Movie	Poor Event; Only C2
2019/02/17	17:36:05	102	15	248	286	500	8.5^*1	----	----	104	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/02/17	23:36:07	271	18	208	269	264	1.9^*1	----	----	272	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/19	00:12:05	265	19	231	358	796	30.1^*1	----	----	260	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/20	04:00:05	82	41	237	300	469	7.7^*1	1.9e+14	5.4e+28	85	C2 PHTX DST Java Movie	Poor Event
2019/02/21	02:24:07	219	9	318	81	0	-175.5^*1	----	----	219	C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/21	03:12:10	76	10	194	286	453	8.7^*1	----	----	83	C3 PHTX DST Java Movie	Very Poor Event
2019/02/21	14:24:06	83	16	211	206	112	-1.5^*1	----	----	80	C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/22	10:36:05	103	10	217	276	770	23.3^*1	----	----	101	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/24	01:25:43	273	86	357	397	402	2.4	1.9e+15	1.2e+30	287	C2 C3 PHTX DST Java Movie
2019/02/25	12:36:05	275	17	296	375	613	13.9^*1	----	----	268	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/02/26	23:12:09	171	11	521	460	0	-55.8^*1	----	----	166	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/02/27	17:24:06	259	52	387	500	559	9.6^*1	5.1e+14	3.8e+29	255	C2 C3 PHTX DST Java Movie
2019/02/28	04:12:05	71	26	93	46	0	-7.6^*1	4.1e+13	1.8e+27	81	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).