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

1997/03/01 03:30:05 100 12 253 358 337 4.0^*1 ---- ---- 98 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

1997/03/01 06:30:09 1 4 247 --- --- --- ---- ---- 359 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/01 06:30:09 33 11 453 --- --- --- ---- ---- 43 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/01 08:30:06 350 10 423 --- --- --- ---- ---- 347 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/01 09:30:05 83 17 167 316 626 18.9^*1 ---- ---- 87 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

1997/03/01 22:55:05 92 56 217 326 321 4.2^*1 ---- ---- 94 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/02 02:55:05 93 42 145 134 83 -0.8^*1 3.2e+13 3.4e+27 94 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

1997/03/03 03:30:05 263 33 238 315 842 29.4^*1 5.7e+11^*2 1.6e+26^*2 266 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2

1997/03/03 07:35:58 90 58 240 494 1489 101.9^*1 2.5e+13^*2 7.2e+27^*2 78 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1997/03/03 08:45:05 259 23 202 259 271 2.7^*1 ---- ---- 265 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C3

1997/03/03 12:30:05 76 25 208 282 373 6.3^*1 ---- ---- 84 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C3

1997/03/03 18:29:03 83 48 340 406 392 3.8^*1 8.2e+13 4.7e+28 85 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/04 01:35:57 318 23 325 604 1624 111.7^*1 ---- ---- 309 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1997/03/04 10:55:05 76 62 37 49 79 0.2^*1 1.1e+15 7.4e+27 85 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/04 13:45:06 83 16 230 343 395 7.3^*1 ---- ---- 89 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C3

1997/03/05 13:35:56 84 70 189 214 237 1.4^*1 ---- ---- 92 C2 C3 195 SXT PHTX DST Java Movie

1997/03/05 17:32:42 11 7 384 --- --- --- ---- ---- 20 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/05 21:30:05 4 9 325 --- --- --- ---- ---- 5 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/05 22:30:07 313 20 460 437 265 -7.3^*1 2.0e+13^*2 2.1e+28^*2 301 C2 C3 195 SXT PHTX DST Java Movie Only 3 points

1997/03/06 01:36:10 104 27 301 188 0 -21.4^*1 ---- ---- 101 C2 C3 195 SXT PHTX DST Java Movie UVCS

1997/03/06 16:35:05 264 32 222 296 535 11.6^*1 ---- ---- 263 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/07 11:30:05 9 10 365 488 1331 70.3^*1 ---- ---- 14 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1997/03/08 02:55:05 4 9 324 224 0 -53.8^*1 ---- ---- 7 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1997/03/08 08:30:06 305 11 327 385 676 16.1^*1 ---- ---- 296 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points; Only C2

1997/03/09 04:30:06 54 146 517 650 595 8.4 2.7e+15^*2 3.5e+30^*2 69 C2 C3 195 SXT PHTX DST Java Movie Partial Halo

1997/03/09 13:35:05 313 7 323 --- --- --- ---- ---- 305 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/09 19:39:14 322 12 326 --- --- --- ---- ---- 321 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/10 01:35:58 315 12 242 301 741 23.5^*1 ---- ---- 305 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1997/03/11 01:35:54 260 41 167 210 320 3.7^*1 3.2e+14 4.4e+28 262 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/11 11:30:06 10 5 125 185 299 3.6 ---- ---- 12 C2 C3 195 SXT PHTX DST Java Movie

1997/03/11 15:30:05 89 24 325 465 477 9.3^*1 4.2e+14 2.2e+29 96 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

1997/03/12 12:30:05 260 47 290 267 259 -1.3 1.3e+15 5.5e+29 273 C2 C3 195 SXT PHTX DST Java Movie

1997/03/12 23:30:05 267 29 218 317 282 2.7^*1 8.4e+14 2.0e+29 263 C2 C3 195 SXT PHTX DST Java Movie

1997/03/13 02:30:05 20 13 342 --- --- --- ---- ---- 25 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 2 points; Only C2

1997/03/14 06:45:10 270 19 238 337 386 7.3^*1 ---- ---- 273 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C3

1997/03/14 23:45:05 258 17 249 291 287 2.0^*1 ---- ---- 255 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C3

1997/03/15 13:35:59 264 45 221 313 364 5.6^*1 ---- ---- 272 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C3

1997/03/15 17:30:05 263 59 329 378 445 5.8^*1 3.7e+14 2.0e+29 261 C2 C3 195 SXT PHTX DST Java Movie Only C3

1997/03/17 02:30:56 254 118 443 606 549 9.3 1.5e+15 1.5e+30 255 C2 C3 195 SXT PHTX DST Java Movie

1997/03/20 09:45:05 265 33 94 39 0 -11.0^*1 5.5e+13^*2 2.4e+27^*2 275 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only C2

1997/03/21 08:17:16 153 7 352 403 931 33.0^*1 ---- ---- 147 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

1997/03/21 08:42:48 337 10 235 312 919 34.2^*1 ---- ---- 333 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C2

1997/03/22 07:38:30 214 19 132 138 167 0.5^*1 ---- ---- 217 C2 C3 SXT PHTX DST Java Movie Very Poor Event

1997/03/22 18:14:29 258 37 226 282 469 8.2^*1 ---- ---- 267 C2 C3 SXT PHTX DST Java Movie Very Poor Event

1997/03/23 15:04:14 268 44 31 35 69 0.2^*1 ---- ---- 269 C2 C3 SXT PHTX DST Java Movie Poor Event; Only C2

1997/03/23 15:30:54 88 17 269 334 371 4.9^*1 ---- ---- 88 C2 C3 SXT PHTX DST Java Movie Very Poor Event; Only C3

1997/03/24 07:37:25 95 33 168 228 327 4.1^*1 ---- ---- 96 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

1997/03/24 07:37:25 232 162 140 177 360 5.2^*1 9.2e+13^*2 9.0e+27^*2 254 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Partial Halo

1997/03/24 22:26:57 180 10 400 --- --- --- ---- ---- 179 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only 2 points; Only C2

1997/03/25 22:45:05 87 45 ---- --- --- --- 8.1e+13^*2 4.0e+23^*2 88 C2 C3 195 SXT PHTX DST Java Movie UVCS Very Poor Event; Unable to measure

1997/03/26 00:30:41 94 52 173 149 0 -4.3^*1 2.6e+14^*2 3.9e+28^*2 84 C2 C3 195 SXT PHTX DST Java Movie Poor Event; Only 3 points

1997/03/26 06:30:09 273 24 199 343 329 4.7^*1 8.1e+13 1.6e+28 273 C2 C3 195 SXT PHTX DST Java Movie

1997/03/27 08:30:05 86 43 116 132 163 0.7^*1 5.2e+13 3.5e+27 99 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event

1997/03/27 15:05:05 271 70 83 107 279 3.4^*1 1.1e+14 3.7e+27 293 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C2

1997/03/28 02:55:05 89 35 309 350 358 3.2^*1 1.1e+13 5.2e+27 90 C2 C3 195 SXT PHTX DST Java Movie Very Poor Event; Only C3

1997/03/28 18:17:46 112 56 146 140 87 -0.7^*1 6.1e+14 6.5e+28 105 C2 C3 195 SXT PHTX DST Java Movie

1997/03/28 23:30:05 105 74 162 227 250 2.3^*1 ---- ---- 100 C2 C3 195 SXT PHTX DST Java Movie

1997/03/29 09:35:05 87 43 331 276 115 -5.9^*1 ---- ---- 98 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/29 15:46:27 85 14 268 351 341 3.5^*1 ---- ---- 81 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/30 09:35:05 72 21 224 260 271 1.5^*1 ---- ---- 75 C2 C3 195 SXT PHTX DST Java Movie Poor Event

1997/03/31 05:30:05 274 56 225 208 172 -1.3^*1 7.7e+13^*2 1.9e+28^*2 266 C2 C3 195 SXT PHTX DST Java Movie 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
1997/03/01	03:30:05	100	12	253	358	337	4.0^*1	----	----	98	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event
1997/03/01	06:30:09	1	4	247	---	---	---	----	----	359	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/01	06:30:09	33	11	453	---	---	---	----	----	43	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/01	08:30:06	350	10	423	---	---	---	----	----	347	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/01	09:30:05	83	17	167	316	626	18.9^*1	----	----	87	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event
1997/03/01	22:55:05	92	56	217	326	321	4.2^*1	----	----	94	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/02	02:55:05	93	42	145	134	83	-0.8^*1	3.2e+13	3.4e+27	94	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event
1997/03/03	03:30:05	263	33	238	315	842	29.4^*1	5.7e+11^*2	1.6e+26^*2	266	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only C2
1997/03/03	07:35:58	90	58	240	494	1489	101.9^*1	2.5e+13^*2	7.2e+27^*2	78	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1997/03/03	08:45:05	259	23	202	259	271	2.7^*1	----	----	265	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1997/03/03	12:30:05	76	25	208	282	373	6.3^*1	----	----	84	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only C3
1997/03/03	18:29:03	83	48	340	406	392	3.8^*1	8.2e+13	4.7e+28	85	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/04	01:35:57	318	23	325	604	1624	111.7^*1	----	----	309	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1997/03/04	10:55:05	76	62	37	49	79	0.2^*1	1.1e+15	7.4e+27	85	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/04	13:45:06	83	16	230	343	395	7.3^*1	----	----	89	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1997/03/05	13:35:56	84	70	189	214	237	1.4^*1	----	----	92	C2 C3 195 SXT PHTX DST Java Movie
1997/03/05	17:32:42	11	7	384	---	---	---	----	----	20	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/05	21:30:05	4	9	325	---	---	---	----	----	5	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/05	22:30:07	313	20	460	437	265	-7.3^*1	2.0e+13^*2	2.1e+28^*2	301	C2 C3 195 SXT PHTX DST Java Movie	Only 3 points
1997/03/06	01:36:10	104	27	301	188	0	-21.4^*1	----	----	101	C2 C3 195 SXT PHTX DST Java Movie UVCS
1997/03/06	16:35:05	264	32	222	296	535	11.6^*1	----	----	263	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/07	11:30:05	9	10	365	488	1331	70.3^*1	----	----	14	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1997/03/08	02:55:05	4	9	324	224	0	-53.8^*1	----	----	7	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1997/03/08	08:30:06	305	11	327	385	676	16.1^*1	----	----	296	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 3 points; Only C2
1997/03/09	04:30:06	54	146	517	650	595	8.4	2.7e+15^*2	3.5e+30^*2	69	C2 C3 195 SXT PHTX DST Java Movie	Partial Halo
1997/03/09	13:35:05	313	7	323	---	---	---	----	----	305	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/09	19:39:14	322	12	326	---	---	---	----	----	321	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/10	01:35:58	315	12	242	301	741	23.5^*1	----	----	305	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1997/03/11	01:35:54	260	41	167	210	320	3.7^*1	3.2e+14	4.4e+28	262	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/11	11:30:06	10	5	125	185	299	3.6	----	----	12	C2 C3 195 SXT PHTX DST Java Movie
1997/03/11	15:30:05	89	24	325	465	477	9.3^*1	4.2e+14	2.2e+29	96	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event
1997/03/12	12:30:05	260	47	290	267	259	-1.3	1.3e+15	5.5e+29	273	C2 C3 195 SXT PHTX DST Java Movie
1997/03/12	23:30:05	267	29	218	317	282	2.7^*1	8.4e+14	2.0e+29	263	C2 C3 195 SXT PHTX DST Java Movie
1997/03/13	02:30:05	20	13	342	---	---	---	----	----	25	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 2 points; Only C2
1997/03/14	06:45:10	270	19	238	337	386	7.3^*1	----	----	273	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1997/03/14	23:45:05	258	17	249	291	287	2.0^*1	----	----	255	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1997/03/15	13:35:59	264	45	221	313	364	5.6^*1	----	----	272	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only C3
1997/03/15	17:30:05	263	59	329	378	445	5.8^*1	3.7e+14	2.0e+29	261	C2 C3 195 SXT PHTX DST Java Movie	Only C3
1997/03/17	02:30:56	254	118	443	606	549	9.3	1.5e+15	1.5e+30	255	C2 C3 195 SXT PHTX DST Java Movie
1997/03/20	09:45:05	265	33	94	39	0	-11.0^*1	5.5e+13^*2	2.4e+27^*2	275	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only C2
1997/03/21	08:17:16	153	7	352	403	931	33.0^*1	----	----	147	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
1997/03/21	08:42:48	337	10	235	312	919	34.2^*1	----	----	333	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C2
1997/03/22	07:38:30	214	19	132	138	167	0.5^*1	----	----	217	C2 C3 SXT PHTX DST Java Movie	Very Poor Event
1997/03/22	18:14:29	258	37	226	282	469	8.2^*1	----	----	267	C2 C3 SXT PHTX DST Java Movie	Very Poor Event
1997/03/23	15:04:14	268	44	31	35	69	0.2^*1	----	----	269	C2 C3 SXT PHTX DST Java Movie	Poor Event; Only C2
1997/03/23	15:30:54	88	17	269	334	371	4.9^*1	----	----	88	C2 C3 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1997/03/24	07:37:25	95	33	168	228	327	4.1^*1	----	----	96	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event
1997/03/24	07:37:25	232	162	140	177	360	5.2^*1	9.2e+13^*2	9.0e+27^*2	254	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Partial Halo
1997/03/24	22:26:57	180	10	400	---	---	---	----	----	179	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only 2 points; Only C2
1997/03/25	22:45:05	87	45	----	---	---	---	8.1e+13^*2	4.0e+23^*2	88	C2 C3 195 SXT PHTX DST Java Movie UVCS	Very Poor Event; Unable to measure
1997/03/26	00:30:41	94	52	173	149	0	-4.3^*1	2.6e+14^*2	3.9e+28^*2	84	C2 C3 195 SXT PHTX DST Java Movie	Poor Event; Only 3 points
1997/03/26	06:30:09	273	24	199	343	329	4.7^*1	8.1e+13	1.6e+28	273	C2 C3 195 SXT PHTX DST Java Movie
1997/03/27	08:30:05	86	43	116	132	163	0.7^*1	5.2e+13	3.5e+27	99	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event
1997/03/27	15:05:05	271	70	83	107	279	3.4^*1	1.1e+14	3.7e+27	293	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only C2
1997/03/28	02:55:05	89	35	309	350	358	3.2^*1	1.1e+13	5.2e+27	90	C2 C3 195 SXT PHTX DST Java Movie	Very Poor Event; Only C3
1997/03/28	18:17:46	112	56	146	140	87	-0.7^*1	6.1e+14	6.5e+28	105	C2 C3 195 SXT PHTX DST Java Movie
1997/03/28	23:30:05	105	74	162	227	250	2.3^*1	----	----	100	C2 C3 195 SXT PHTX DST Java Movie
1997/03/29	09:35:05	87	43	331	276	115	-5.9^*1	----	----	98	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/29	15:46:27	85	14	268	351	341	3.5^*1	----	----	81	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/30	09:35:05	72	21	224	260	271	1.5^*1	----	----	75	C2 C3 195 SXT PHTX DST Java Movie	Poor Event
1997/03/31	05:30:05	274	56	225	208	172	-1.3^*1	7.7e+13^*2	1.9e+28^*2	266	C2 C3 195 SXT PHTX DST Java Movie	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).