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

2020/05/01 11:36:05 354 13 307 90 0 -157.3^*1 ---- ---- 357 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/03 20:56:53 253 50 229 262 310 2.4^*1 8.7e+14 2.3e+29 249 C2 C3 PHTX DST Java Movie Poor Event

2020/05/05 15:24:05 257 22 106 132 212 1.6^*1 9.5e+13 5.4e+27 245 C2 C3 PHTX DST Java Movie Poor Event

2020/05/07 20:24:05 255 37 70 24 0 -3.9^*1 1.1e+14 2.6e+27 257 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/09 19:00:05 253 46 172 110 0 -4.4^*1 2.7e+14 4.0e+28 252 C2 C3 PHTX DST Java Movie Very Poor Event

2020/05/11 00:36:05 254 30 334 508 1365 78.8^*1 4.7e+13 2.6e+28 259 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/11 08:36:07 80 50 173 124 0 -10.1^*1 8.5e+13 1.3e+28 82 C2 C3 PHTX DST Java Movie Only C2

2020/05/11 16:48:05 72 40 277 362 1149 55.6^*1 7.7e+12 3.0e+27 76 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/12 10:24:05 74 32 195 266 298 3.1^*1 4.6e+14 8.8e+28 73 C2 C3 PHTX DST Java Movie Poor Event

2020/05/12 19:48:05 65 31 243 362 439 7.4^*1 7.2e+13 2.1e+28 72 C2 C3 PHTX DST Java Movie Poor Event

2020/05/13 11:24:05 250 39 129 84 0 -6.6^*1 2.2e+14 1.9e+28 248 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/14 13:25:40 241 27 139 121 0 -4.0^*1 6.3e+13 6.1e+27 245 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/15 06:12:13 242 41 102 123 203 1.5^*1 2.6e+14 1.3e+28 250 C2 C3 PHTX DST Java Movie Very Poor Event

2020/05/15 22:48:05 197 9 396 --- --- --- ---- ---- 199 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2020/05/16 21:23:29 88 23 128 128 112 -0.2^*1 3.9e+13 3.2e+27 87 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/17 06:00:05 252 9 238 271 432 6.6^*1 ---- ---- 252 C2 C3 PHTX DST Java Movie Very Poor Event

2020/05/17 19:00:05 65 21 163 177 337 3.7^*1 2.5e+12 3.3e+26 64 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/19 13:25:42 14 8 246 11 0 -353.5^*1 ---- ---- 24 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/05/20 08:24:05 251 36 77 97 296 3.5^*1 1.6e+14 4.8e+27 249 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/22 03:47:14 336 9 232 --- --- --- ---- ---- 333 C2 C3 PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

2020/05/22 19:19:19 73 24 204 148 0 -35.2^*1 1.8e+13^*2 3.7e+27^*2 68 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/23 20:24:05 70 33 72 39 0 -12.6^*1 5.3e+13 1.4e+27 71 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/24 07:24:05 83 38 233 246 338 2.7^*1 4.1e+14 1.1e+29 90 C2 C3 PHTX DST Java Movie Poor Event

2020/05/24 10:24:05 80 54 104 132 251 2.3^*1 2.2e+14 1.2e+28 89 C2 C3 PHTX DST Java Movie Poor Event

2020/05/25 14:00:05 1 12 671 910 2823 332.1^*1 ---- ---- 7 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2020/05/25 14:12:05 228 8 247 266 546 10.3^*1 ---- ---- 232 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/26 00:36:06 255 95 142 216 289 3.2^*1 6.7e+14 6.7e+28 251 C2 C3 PHTX DST Java Movie Poor Event

2020/05/26 10:36:05 242 36 172 185 271 2.0^*1 6.1e+12 9.0e+26 262 C2 C3 PHTX DST Java Movie Poor Event

2020/05/26 17:24:05 58 18 244 250 315 1.7^*1 ---- ---- 65 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/27 06:00:06 83 17 108 129 222 1.8^*1 ---- ---- 89 C2 C3 PHTX DST Java Movie Poor Event

2020/05/27 07:00:05 254 23 208 179 0 -6.3^*1 5.5e+13 1.2e+28 256 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/27 09:48:05 243 15 219 243 459 7.7^*1 ---- ---- 254 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/27 11:24:06 338 9 409 683 2480 260.1^*1 ---- ---- 337 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2020/05/27 18:36:05 80 51 726 664 0 -35.5^*1 2.7e+14 7.0e+29 64 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/27 20:56:55 260 74 122 224 288 3.4^*1 9.3e+14 6.9e+28 258 C2 C3 PHTX DST Java Movie

2020/05/28 03:12:09 87 19 173 217 406 6.6^*1 ---- ---- 87 C2 C3 PHTX DST Java Movie Poor Event

2020/05/28 11:00:06 76 44 555 344 0 -116.8^*1 1.9e+14 2.9e+29 63 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/28 21:12:11 260 23 187 192 214 0.5^*1 6.9e+13 1.2e+28 258 C2 C3 PHTX DST Java Movie Poor Event

2020/05/29 08:00:05 79 37 337 301 0 -13.2^*1 1.1e+14 6.4e+28 69 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/29 11:24:05 84 52 347 288 0 -21.9^*1 1.5e+14 8.8e+28 68 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/29 15:12:05 83 46 204 193 0 -2.8^*1 8.8e+13 1.8e+28 74 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/29 17:36:05 76 34 210 120 0 -19.3^*1 8.6e+13 1.9e+28 73 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2020/05/30 01:25:43 80 39 269 339 331 2.8 5.0e+14 1.8e+29 86 C2 C3 PHTX DST Java Movie

2020/05/30 08:48:05 259 23 146 180 399 6.5^*1 1.4e+13 1.4e+27 264 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
2020/05/01	11:36:05	354	13	307	90	0	-157.3^*1	----	----	357	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/03	20:56:53	253	50	229	262	310	2.4^*1	8.7e+14	2.3e+29	249	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/05	15:24:05	257	22	106	132	212	1.6^*1	9.5e+13	5.4e+27	245	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/07	20:24:05	255	37	70	24	0	-3.9^*1	1.1e+14	2.6e+27	257	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/09	19:00:05	253	46	172	110	0	-4.4^*1	2.7e+14	4.0e+28	252	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/05/11	00:36:05	254	30	334	508	1365	78.8^*1	4.7e+13	2.6e+28	259	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/11	08:36:07	80	50	173	124	0	-10.1^*1	8.5e+13	1.3e+28	82	C2 C3 PHTX DST Java Movie	Only C2
2020/05/11	16:48:05	72	40	277	362	1149	55.6^*1	7.7e+12	3.0e+27	76	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/12	10:24:05	74	32	195	266	298	3.1^*1	4.6e+14	8.8e+28	73	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/12	19:48:05	65	31	243	362	439	7.4^*1	7.2e+13	2.1e+28	72	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/13	11:24:05	250	39	129	84	0	-6.6^*1	2.2e+14	1.9e+28	248	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/14	13:25:40	241	27	139	121	0	-4.0^*1	6.3e+13	6.1e+27	245	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/15	06:12:13	242	41	102	123	203	1.5^*1	2.6e+14	1.3e+28	250	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/05/15	22:48:05	197	9	396	---	---	---	----	----	199	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2020/05/16	21:23:29	88	23	128	128	112	-0.2^*1	3.9e+13	3.2e+27	87	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/17	06:00:05	252	9	238	271	432	6.6^*1	----	----	252	C2 C3 PHTX DST Java Movie	Very Poor Event
2020/05/17	19:00:05	65	21	163	177	337	3.7^*1	2.5e+12	3.3e+26	64	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/19	13:25:42	14	8	246	11	0	-353.5^*1	----	----	24	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/05/20	08:24:05	251	36	77	97	296	3.5^*1	1.6e+14	4.8e+27	249	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/22	03:47:14	336	9	232	---	---	---	----	----	333	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
2020/05/22	19:19:19	73	24	204	148	0	-35.2^*1	1.8e+13^*2	3.7e+27^*2	68	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/23	20:24:05	70	33	72	39	0	-12.6^*1	5.3e+13	1.4e+27	71	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/24	07:24:05	83	38	233	246	338	2.7^*1	4.1e+14	1.1e+29	90	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/24	10:24:05	80	54	104	132	251	2.3^*1	2.2e+14	1.2e+28	89	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/25	14:00:05	1	12	671	910	2823	332.1^*1	----	----	7	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2020/05/25	14:12:05	228	8	247	266	546	10.3^*1	----	----	232	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/26	00:36:06	255	95	142	216	289	3.2^*1	6.7e+14	6.7e+28	251	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/26	10:36:05	242	36	172	185	271	2.0^*1	6.1e+12	9.0e+26	262	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/26	17:24:05	58	18	244	250	315	1.7^*1	----	----	65	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/27	06:00:06	83	17	108	129	222	1.8^*1	----	----	89	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/27	07:00:05	254	23	208	179	0	-6.3^*1	5.5e+13	1.2e+28	256	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/27	09:48:05	243	15	219	243	459	7.7^*1	----	----	254	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/27	11:24:06	338	9	409	683	2480	260.1^*1	----	----	337	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2020/05/27	18:36:05	80	51	726	664	0	-35.5^*1	2.7e+14	7.0e+29	64	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/27	20:56:55	260	74	122	224	288	3.4^*1	9.3e+14	6.9e+28	258	C2 C3 PHTX DST Java Movie
2020/05/28	03:12:09	87	19	173	217	406	6.6^*1	----	----	87	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/28	11:00:06	76	44	555	344	0	-116.8^*1	1.9e+14	2.9e+29	63	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/28	21:12:11	260	23	187	192	214	0.5^*1	6.9e+13	1.2e+28	258	C2 C3 PHTX DST Java Movie	Poor Event
2020/05/29	08:00:05	79	37	337	301	0	-13.2^*1	1.1e+14	6.4e+28	69	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/29	11:24:05	84	52	347	288	0	-21.9^*1	1.5e+14	8.8e+28	68	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/29	15:12:05	83	46	204	193	0	-2.8^*1	8.8e+13	1.8e+28	74	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/29	17:36:05	76	34	210	120	0	-19.3^*1	8.6e+13	1.9e+28	73	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2020/05/30	01:25:43	80	39	269	339	331	2.8	5.0e+14	1.8e+29	86	C2 C3 PHTX DST Java Movie
2020/05/30	08:48:05	259	23	146	180	399	6.5^*1	1.4e+13	1.4e+27	264	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).