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

2004/08/01 14:30:05 270 85 387 394 393 0.5^*1 2.3e+15 1.7e+30 276 C2 C3 195 PHTX DST Java Movie Poor Event; Only C3

2004/08/02 15:54:05 143 16 417 492 909 30.3^*1 ---- ---- 145 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/02 20:54:05 139 21 393 550 601 14.5^*1 6.4e+14 4.9e+29 139 C2 C3 195 PHTX DST Java Movie

2004/08/02 23:06:05 77 61 393 492 1314 68.2^*1 1.3e+14^*2 1.0e+29^*2 79 C2 C3 195 PHTX DST Java Movie Only 3 points; Only C2

2004/08/03 00:54:05 251 5 499 --- --- --- ---- ---- 250 C2 C3 195 PHTX DST Java Movie Only 2 points; Only C2

2004/08/04 01:31:47 78 59 412 418 544 5.5^*1 1.6e+14^*2 1.3e+29^*2 85 C2 C3 195 PHTX DST Java Movie Only 3 points; Only C2

2004/08/04 13:31:45 78 58 561 563 567 0.4^*1 6.0e+14 9.4e+29 69 C2 C3 195 PHTX DST Java Movie

2004/08/05 07:54:05 69 47 521 537 589 3.8 4.2e+14 5.7e+29 68 C2 C3 195 PHTX DST Java Movie

2004/08/05 21:30:08 65 39 492 484 451 -2.0 3.6e+14 4.4e+29 65 C2 C3 195 PHTX DST Java Movie

2004/08/06 10:30:19 268 48 103 271 355 5.4 1.6e+15 8.4e+28 262 C2 C3 195 PHTX DST Java Movie

2004/08/07 06:30:05 67 48 238 315 526 10.5 1.2e+15 3.5e+29 65 C2 C3 195 PHTX DST Java Movie

2004/08/08 08:54:05 Halo (BA) 360 1004 1112 1166 24.1 6.4e+15^*2 3.2e+31^*2 93 C2 C3 195 PHTX DST Java Movie MailLog1

2004/08/09 06:30:05 305 13 426 370 0 -14.7^*1 ---- ---- 296 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/09 11:54:20 266 57 294 303 341 1.5^*1 3.8e+14 1.6e+29 259 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/09 15:06:06 266 45 668 642 652 -2.4 1.3e+15 2.8e+30 263 C2 C3 195 PHTX DST Java Movie

2004/08/10 12:54:05 191 49 297 356 581 11.6^*1 2.2e+14 9.8e+28 177 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/10 16:54:05 258 38 273 341 480 7.9^*1 2.7e+14 1.0e+29 267 C2 C3 195 PHTX DST Java Movie

2004/08/10 16:54:05 184 >137 183 350 548 12.6^*1 1.3e+15^*2 2.2e+29^*2 156 C2 C3 195 PHTX DST Java Movie Uncertain Width; Partial Halo

2004/08/11 06:54:05 69 17 421 453 570 7.2 ---- ---- 65 C2 C3 195 PHTX DST Java Movie

2004/08/12 05:54:07 198 115 176 193 267 2.0^*1 6.2e+11 9.6e+25 197 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/12 06:30:05 28 10 609 673 972 31.1^*1 ---- ---- 25 C2 C3 195 PHTX DST Java Movie Only 3 points

2004/08/13 00:30:05 286 27 445 436 403 -1.9 1.1e+14 1.1e+29 288 C2 C3 195 PHTX DST Java Movie

2004/08/13 19:36:05 196 96 412 403 406 -0.4 1.7e+15 1.4e+30 205 C2 C3 195 PHTX DST Java Movie

2004/08/14 02:30:05 263 91 307 464 800 25.3^*1 ---- ---- 268 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/14 19:54:05 209 94 189 244 411 6.2^*1 1.3e+15 2.4e+29 210 C2 C3 195 PHTX DST Java Movie

2004/08/14 21:54:05 222 143 252 294 308 2.1 2.5e+15^*2 8.1e+29^*2 221 C2 C3 195 PHTX DST Java Movie Partial Halo

2004/08/15 15:30:05 211 93 195 262 339 4.1^*1 9.4e+14 1.8e+29 213 C2 C3 195 PHTX DST Java Movie

2004/08/16 00:30:06 234 39 199 302 508 10.3 1.5e+15 3.0e+29 232 C2 C3 195 PHTX DST Java Movie

2004/08/16 06:06:06 115 12 227 227 233 0.1^*1 ---- ---- 115 C2 C3 195 PHTX DST Java Movie Only 3 points; Only C2

2004/08/16 12:30:05 302 96 589 714 696 11.2 2.8e+15 4.9e+30 298 C2 C3 195 PHTX DST Java Movie

2004/08/17 06:06:05 116 131 637 780 773 14.4 3.9e+15^*2 7.9e+30^*2 127 C2 C3 195 PHTX DST Java Movie Partial Halo

2004/08/18 16:54:05 91 26 760 751 746 -1.4 9.9e+14 2.8e+30 89 C2 C3 195 PHTX DST Java Movie

2004/08/18 17:30:06 231 22 321 275 0 -40.5^*1 ---- ---- 230 C2 C3 195 PHTX DST Java Movie Newly inserted on 2006/04/04; Poor Event; Only 3 points; Only C2

2004/08/18 17:54:05 258 120 602 608 607 0.5 7.6e+15 1.4e+31 250 C2 C3 195 PHTX DST Java Movie

2004/08/18 18:30:05 89 75 651 608 529 -8.4^*1 5.0e+14^*2 1.1e+30^*2 86 C2 C3 195 PHTX DST Java Movie

2004/08/18 19:31:46 118 56 152 199 388 5.7 3.0e+14 3.5e+28 127 C2 C3 195 PHTX DST Java Movie Only C2

2004/08/19 02:54:05 85 15 594 623 760 11.2^*1 ---- ---- 84 C2 C3 195 PHTX DST Java Movie

2004/08/19 05:06:05 103 39 279 384 423 6.5^*1 1.4e+14 5.3e+28 106 C2 C3 195 PHTX DST Java Movie

2004/08/20 06:30:05 61 58 417 362 0 -9.6 3.1e+14 2.7e+29 68 C2 C3 195 PHTX DST Java Movie

2004/08/20 13:31:46 54 21 543 548 554 0.8^*1 3.0e+14 4.3e+29 56 C2 C3 195 PHTX DST Java Movie

2004/08/20 15:54:05 63 160 667 761 1235 52.4^*1 1.8e+15^*2 4.0e+30^*2 47 C2 C3 195 PHTX DST Java Movie Only C2; Partial Halo

2004/08/21 05:54:05 325 23 262 148 0 -110.7^*1 2.7e+13^*2 9.1e+27^*2 332 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2004/08/21 07:31:50 269 73 182 176 64 -1.3^*1 8.8e+13 1.5e+28 250 C2 C3 195 PHTX DST Java Movie Only C2

2004/08/21 23:06:50 257 75 205 222 239 0.8 5.0e+14 1.1e+29 270 C2 C3 195 PHTX DST Java Movie

2004/08/22 05:54:05 93 32 421 271 0 -47.1^*1 9.6e+13 8.5e+28 90 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/22 17:30:05 94 42 321 364 608 12.0^*1 7.5e+13 3.9e+28 85 C2 C3 195 PHTX DST Java Movie Only C2

2004/08/23 00:30:05 98 36 403 347 137 -7.9 4.2e+14 3.4e+29 81 C2 C3 195 PHTX DST Java Movie

2004/08/23 22:30:05 306 50 ---- --- --- --- 5.3e+13^*2 2.7e+23^*2 302 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only C2; Unable to measure

2004/08/24 13:54:05 83 105 817 815 816 -0.2 3.0e+15 1.0e+31 91 C2 C3 195 PHTX DST Java Movie UVCS

2004/08/24 21:30:08 242 >91 571 474 0 -31.5^*1 2.2e+14^*2 3.6e+29^*2 257 C2 C3 195 PHTX DST Java Movie Poor Event; Uncertain Width

2004/08/25 13:31:46 136 182 108 195 330 4.5^*1 7.1e+14^*2 4.1e+28^*2 105 C2 C3 195 PHTX DST Java Movie Poor Event; Partial Halo

2004/08/25 18:52:22 263 10 420 502 718 17.5^*1 ---- ---- 259 C2 C3 195 PHTX DST Java Movie Poor Event; Only 3 points

2004/08/26 06:30:05 246 54 127 280 365 5.6^*1 8.0e+14 6.5e+28 243 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/26 12:30:06 206 119 184 295 372 5.5 2.0e+15 3.3e+29 205 C2 C3 195 PHTX DST Java Movie

2004/08/26 16:54:29 316 16 157 154 101 -0.6^*1 ---- ---- 318 C2 C3 195 PHTX DST Java Movie Only C2

2004/08/26 21:54:06 111 67 280 410 463 8.2^*1 ---- ---- 108 C2 C3 195 PHTX DST Java Movie Poor Event

2004/08/27 09:30:05 261 70 554 767 729 17.0 3.1e+15 4.8e+30 249 C2 C3 195 PHTX DST Java Movie UVCS

2004/08/28 12:30:05 266 16 429 31 0 -223.1^*1 ---- ---- 264 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2004/08/29 02:30:05 274 29 1195 1044 849 -46.3 6.8e+14 4.8e+30 270 C2 C3 195 PHTX DST Java Movie

2004/08/30 03:54:05 269 100 362 401 776 21.8^*1 2.4e+14^*2 1.5e+29^*2 277 C2 C3 195 PHTX DST Java Movie Only C2

2004/08/30 05:54:05 271 48 89 123 460 8.5^*1 3.8e+14 1.5e+28 268 C2 C3 195 PHTX DST Java Movie Poor Event; Only C2

2004/08/30 16:54:07 265 64 252 195 0 -9.7^*1 4.5e+14 1.4e+29 277 C2 C3 195 PHTX DST Java Movie

2004/08/30 23:30:06 282 43 273 236 0 -15.1^*1 1.6e+14 5.9e+28 283 C2 C3 195 PHTX DST Java Movie Only C2

2004/08/31 05:54:05 272 70 311 271 199 -3.4 2.3e+15 1.1e+30 267 C2 C3 195 PHTX DST Java Movie

2004/08/31 07:54:05 268 53 132 274 366 5.8 1.1e+15 9.6e+28 270 C2 C3 195 PHTX DST Java Movie Not LE

2004/08/31 14:54:05 265 76 503 --- --- --- ---- ---- 272 C2 C3 195 PHTX DST Java Movie Very Poor Event; Only 2 points; 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
2004/08/01	14:30:05	270	85	387	394	393	0.5^*1	2.3e+15	1.7e+30	276	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C3
2004/08/02	15:54:05	143	16	417	492	909	30.3^*1	----	----	145	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/02	20:54:05	139	21	393	550	601	14.5^*1	6.4e+14	4.9e+29	139	C2 C3 195 PHTX DST Java Movie
2004/08/02	23:06:05	77	61	393	492	1314	68.2^*1	1.3e+14^*2	1.0e+29^*2	79	C2 C3 195 PHTX DST Java Movie	Only 3 points; Only C2
2004/08/03	00:54:05	251	5	499	---	---	---	----	----	250	C2 C3 195 PHTX DST Java Movie	Only 2 points; Only C2
2004/08/04	01:31:47	78	59	412	418	544	5.5^*1	1.6e+14^*2	1.3e+29^*2	85	C2 C3 195 PHTX DST Java Movie	Only 3 points; Only C2
2004/08/04	13:31:45	78	58	561	563	567	0.4^*1	6.0e+14	9.4e+29	69	C2 C3 195 PHTX DST Java Movie
2004/08/05	07:54:05	69	47	521	537	589	3.8	4.2e+14	5.7e+29	68	C2 C3 195 PHTX DST Java Movie
2004/08/05	21:30:08	65	39	492	484	451	-2.0	3.6e+14	4.4e+29	65	C2 C3 195 PHTX DST Java Movie
2004/08/06	10:30:19	268	48	103	271	355	5.4	1.6e+15	8.4e+28	262	C2 C3 195 PHTX DST Java Movie
2004/08/07	06:30:05	67	48	238	315	526	10.5	1.2e+15	3.5e+29	65	C2 C3 195 PHTX DST Java Movie
2004/08/08	08:54:05	Halo (BA)	360	1004	1112	1166	24.1	6.4e+15^*2	3.2e+31^*2	93	C2 C3 195 PHTX DST Java Movie	MailLog1
2004/08/09	06:30:05	305	13	426	370	0	-14.7^*1	----	----	296	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/09	11:54:20	266	57	294	303	341	1.5^*1	3.8e+14	1.6e+29	259	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/09	15:06:06	266	45	668	642	652	-2.4	1.3e+15	2.8e+30	263	C2 C3 195 PHTX DST Java Movie
2004/08/10	12:54:05	191	49	297	356	581	11.6^*1	2.2e+14	9.8e+28	177	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/10	16:54:05	258	38	273	341	480	7.9^*1	2.7e+14	1.0e+29	267	C2 C3 195 PHTX DST Java Movie
2004/08/10	16:54:05	184	>137	183	350	548	12.6^*1	1.3e+15^*2	2.2e+29^*2	156	C2 C3 195 PHTX DST Java Movie	Uncertain Width; Partial Halo
2004/08/11	06:54:05	69	17	421	453	570	7.2	----	----	65	C2 C3 195 PHTX DST Java Movie
2004/08/12	05:54:07	198	115	176	193	267	2.0^*1	6.2e+11	9.6e+25	197	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/12	06:30:05	28	10	609	673	972	31.1^*1	----	----	25	C2 C3 195 PHTX DST Java Movie	Only 3 points
2004/08/13	00:30:05	286	27	445	436	403	-1.9	1.1e+14	1.1e+29	288	C2 C3 195 PHTX DST Java Movie
2004/08/13	19:36:05	196	96	412	403	406	-0.4	1.7e+15	1.4e+30	205	C2 C3 195 PHTX DST Java Movie
2004/08/14	02:30:05	263	91	307	464	800	25.3^*1	----	----	268	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/14	19:54:05	209	94	189	244	411	6.2^*1	1.3e+15	2.4e+29	210	C2 C3 195 PHTX DST Java Movie
2004/08/14	21:54:05	222	143	252	294	308	2.1	2.5e+15^*2	8.1e+29^*2	221	C2 C3 195 PHTX DST Java Movie	Partial Halo
2004/08/15	15:30:05	211	93	195	262	339	4.1^*1	9.4e+14	1.8e+29	213	C2 C3 195 PHTX DST Java Movie
2004/08/16	00:30:06	234	39	199	302	508	10.3	1.5e+15	3.0e+29	232	C2 C3 195 PHTX DST Java Movie
2004/08/16	06:06:06	115	12	227	227	233	0.1^*1	----	----	115	C2 C3 195 PHTX DST Java Movie	Only 3 points; Only C2
2004/08/16	12:30:05	302	96	589	714	696	11.2	2.8e+15	4.9e+30	298	C2 C3 195 PHTX DST Java Movie
2004/08/17	06:06:05	116	131	637	780	773	14.4	3.9e+15^*2	7.9e+30^*2	127	C2 C3 195 PHTX DST Java Movie	Partial Halo
2004/08/18	16:54:05	91	26	760	751	746	-1.4	9.9e+14	2.8e+30	89	C2 C3 195 PHTX DST Java Movie
2004/08/18	17:30:06	231	22	321	275	0	-40.5^*1	----	----	230	C2 C3 195 PHTX DST Java Movie	Newly inserted on 2006/04/04; Poor Event; Only 3 points; Only C2
2004/08/18	17:54:05	258	120	602	608	607	0.5	7.6e+15	1.4e+31	250	C2 C3 195 PHTX DST Java Movie
2004/08/18	18:30:05	89	75	651	608	529	-8.4^*1	5.0e+14^*2	1.1e+30^*2	86	C2 C3 195 PHTX DST Java Movie
2004/08/18	19:31:46	118	56	152	199	388	5.7	3.0e+14	3.5e+28	127	C2 C3 195 PHTX DST Java Movie	Only C2
2004/08/19	02:54:05	85	15	594	623	760	11.2^*1	----	----	84	C2 C3 195 PHTX DST Java Movie
2004/08/19	05:06:05	103	39	279	384	423	6.5^*1	1.4e+14	5.3e+28	106	C2 C3 195 PHTX DST Java Movie
2004/08/20	06:30:05	61	58	417	362	0	-9.6	3.1e+14	2.7e+29	68	C2 C3 195 PHTX DST Java Movie
2004/08/20	13:31:46	54	21	543	548	554	0.8^*1	3.0e+14	4.3e+29	56	C2 C3 195 PHTX DST Java Movie
2004/08/20	15:54:05	63	160	667	761	1235	52.4^*1	1.8e+15^*2	4.0e+30^*2	47	C2 C3 195 PHTX DST Java Movie	Only C2; Partial Halo
2004/08/21	05:54:05	325	23	262	148	0	-110.7^*1	2.7e+13^*2	9.1e+27^*2	332	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2004/08/21	07:31:50	269	73	182	176	64	-1.3^*1	8.8e+13	1.5e+28	250	C2 C3 195 PHTX DST Java Movie	Only C2
2004/08/21	23:06:50	257	75	205	222	239	0.8	5.0e+14	1.1e+29	270	C2 C3 195 PHTX DST Java Movie
2004/08/22	05:54:05	93	32	421	271	0	-47.1^*1	9.6e+13	8.5e+28	90	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/22	17:30:05	94	42	321	364	608	12.0^*1	7.5e+13	3.9e+28	85	C2 C3 195 PHTX DST Java Movie	Only C2
2004/08/23	00:30:05	98	36	403	347	137	-7.9	4.2e+14	3.4e+29	81	C2 C3 195 PHTX DST Java Movie
2004/08/23	22:30:05	306	50	----	---	---	---	5.3e+13^*2	2.7e+23^*2	302	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only C2; Unable to measure
2004/08/24	13:54:05	83	105	817	815	816	-0.2	3.0e+15	1.0e+31	91	C2 C3 195 PHTX DST Java Movie UVCS
2004/08/24	21:30:08	242	>91	571	474	0	-31.5^*1	2.2e+14^*2	3.6e+29^*2	257	C2 C3 195 PHTX DST Java Movie	Poor Event; Uncertain Width
2004/08/25	13:31:46	136	182	108	195	330	4.5^*1	7.1e+14^*2	4.1e+28^*2	105	C2 C3 195 PHTX DST Java Movie	Poor Event; Partial Halo
2004/08/25	18:52:22	263	10	420	502	718	17.5^*1	----	----	259	C2 C3 195 PHTX DST Java Movie	Poor Event; Only 3 points
2004/08/26	06:30:05	246	54	127	280	365	5.6^*1	8.0e+14	6.5e+28	243	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/26	12:30:06	206	119	184	295	372	5.5	2.0e+15	3.3e+29	205	C2 C3 195 PHTX DST Java Movie
2004/08/26	16:54:29	316	16	157	154	101	-0.6^*1	----	----	318	C2 C3 195 PHTX DST Java Movie	Only C2
2004/08/26	21:54:06	111	67	280	410	463	8.2^*1	----	----	108	C2 C3 195 PHTX DST Java Movie	Poor Event
2004/08/27	09:30:05	261	70	554	767	729	17.0	3.1e+15	4.8e+30	249	C2 C3 195 PHTX DST Java Movie UVCS
2004/08/28	12:30:05	266	16	429	31	0	-223.1^*1	----	----	264	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2004/08/29	02:30:05	274	29	1195	1044	849	-46.3	6.8e+14	4.8e+30	270	C2 C3 195 PHTX DST Java Movie
2004/08/30	03:54:05	269	100	362	401	776	21.8^*1	2.4e+14^*2	1.5e+29^*2	277	C2 C3 195 PHTX DST Java Movie	Only C2
2004/08/30	05:54:05	271	48	89	123	460	8.5^*1	3.8e+14	1.5e+28	268	C2 C3 195 PHTX DST Java Movie	Poor Event; Only C2
2004/08/30	16:54:07	265	64	252	195	0	-9.7^*1	4.5e+14	1.4e+29	277	C2 C3 195 PHTX DST Java Movie
2004/08/30	23:30:06	282	43	273	236	0	-15.1^*1	1.6e+14	5.9e+28	283	C2 C3 195 PHTX DST Java Movie	Only C2
2004/08/31	05:54:05	272	70	311	271	199	-3.4	2.3e+15	1.1e+30	267	C2 C3 195 PHTX DST Java Movie
2004/08/31	07:54:05	268	53	132	274	366	5.8	1.1e+15	9.6e+28	270	C2 C3 195 PHTX DST Java Movie	Not LE
2004/08/31	14:54:05	265	76	503	---	---	---	----	----	272	C2 C3 195 PHTX DST Java Movie	Very Poor Event; Only 2 points; 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).