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

2019/09/01 03:24:05 92 38 240 316 559 11.9^*1 1.7e+14 4.9e+28 97 C3 PHTX DST Java Movie Poor Event

2019/09/02 09:42:06 82 12 273 147 0 -33.0^*1 ---- ---- 94 C2 C3 PHTX DST Java Movie Very Poor Event; Only C3

2019/09/03 15:12:09 12 4 383 445 1098 45.4^*1 ---- ---- 14 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/08 01:25:42 257 53 105 138 265 3.1^*1 1.5e+14 8.3e+27 257 C2 C3 PHTX DST Java Movie Very Poor Event

2019/09/08 16:12:05 59 63 181 209 438 7.6^*1 1.8e+13 3.0e+27 63 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/09 12:00:05 84 43 213 197 59 -2.0^*1 7.8e+13 1.8e+28 85 C2 C3 PHTX DST Java Movie Poor Event

2019/09/10 05:00:05 82 28 173 190 223 1.1^*1 3.6e+10 5.4e+24 84 C2 C3 PHTX DST Java Movie Very Poor Event

2019/09/11 04:48:06 81 11 273 124 0 -69.7^*1 ---- ---- 82 C2 C3 PHTX DST Java Movie Very Poor Event

2019/09/11 11:48:05 89 71 99 134 211 1.7^*1 3.1e+14 1.5e+28 89 C2 C3 PHTX DST Java Movie Poor Event

2019/09/12 08:00:05 347 9 311 238 0 -67.4^*1 ---- ---- 346 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/12 16:48:05 102 12 399 633 1657 112.3^*1 ---- ---- 108 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/09/13 00:36:05 262 40 196 184 0 -2.5^*1 2.2e+13 4.2e+27 262 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/09/13 08:00:05 266 26 171 163 0 -1.7^*1 4.3e+13 6.3e+27 269 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/09/13 11:12:05 96 24 218 315 566 13.7^*1 1.4e+13 3.4e+27 94 C2 C3 PHTX DST Java Movie Poor Event

2019/09/14 07:12:07 89 42 158 141 0 -3.8^*1 5.6e+13 7.0e+27 87 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/09/16 05:24:05 277 80 276 336 1163 53.7^*1 1.7e+12^*2 6.5e+26^*2 271 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/16 14:48:06 85 16 248 347 416 6.6^*1 ---- ---- 91 C2 C3 PHTX DST Java Movie Poor Event

2019/09/17 04:36:06 264 11 217 380 1161 55.7^*1 ---- ---- 265 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/17 06:48:05 49 10 294 263 0 -14.9^*1 ---- ---- 51 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/09/18 06:36:05 67 7 247 350 1107 49.6^*1 ---- ---- 69 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/18 07:00:05 276 30 219 226 311 2.1^*1 3.2e+13 7.6e+27 275 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/09/18 20:56:54 71 8 135 120 0 -9.2^*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Poor Event; Only C2

2019/09/20 02:00:05 113 26 137 201 521 11.4^*1 5.3e+13 5.0e+27 111 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/22 00:48:05 148 8 181 437 1979 167.2^*1 ---- ---- 138 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2019/09/22 04:36:06 71 17 389 591 1436 83.9^*1 ---- ---- 71 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/23 12:48:05 255 8 214 221 394 4.7^*1 ---- ---- 262 C2 C3 PHTX DST Java Movie Very Poor Event; Only 3 points; Only C2

2019/09/23 20:24:05 277 24 70 47 0 -3.0^*1 4.5e+13 1.1e+27 274 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/26 00:36:05 183 4 343 305 0 -19.0^*1 ---- ---- 184 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/26 01:36:14 277 26 125 174 352 5.1^*1 5.5e+12 4.3e+26 282 C2 C3 PHTX DST Java Movie Very Poor Event

2019/09/26 03:48:05 185 9 390 445 920 30.2^*1 ---- ---- 186 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/26 05:24:05 94 19 283 267 210 -2.0^*1 ---- ---- 95 C2 C3 PHTX DST Java Movie Poor Event

2019/09/28 08:00:05 93 40 112 130 266 2.6^*1 9.7e+13 6.1e+27 95 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/30 05:12:05 291 15 167 196 389 5.5^*1 ---- ---- 289 C2 C3 PHTX DST Java Movie Very Poor Event; Only C2

2019/09/30 14:00:06 89 30 294 294 300 0.2^*1 5.9e+12 2.6e+27 91 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
2019/09/01	03:24:05	92	38	240	316	559	11.9^*1	1.7e+14	4.9e+28	97	C3 PHTX DST Java Movie	Poor Event
2019/09/02	09:42:06	82	12	273	147	0	-33.0^*1	----	----	94	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C3
2019/09/03	15:12:09	12	4	383	445	1098	45.4^*1	----	----	14	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/08	01:25:42	257	53	105	138	265	3.1^*1	1.5e+14	8.3e+27	257	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/09/08	16:12:05	59	63	181	209	438	7.6^*1	1.8e+13	3.0e+27	63	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/09	12:00:05	84	43	213	197	59	-2.0^*1	7.8e+13	1.8e+28	85	C2 C3 PHTX DST Java Movie	Poor Event
2019/09/10	05:00:05	82	28	173	190	223	1.1^*1	3.6e+10	5.4e+24	84	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/09/11	04:48:06	81	11	273	124	0	-69.7^*1	----	----	82	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/09/11	11:48:05	89	71	99	134	211	1.7^*1	3.1e+14	1.5e+28	89	C2 C3 PHTX DST Java Movie	Poor Event
2019/09/12	08:00:05	347	9	311	238	0	-67.4^*1	----	----	346	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/12	16:48:05	102	12	399	633	1657	112.3^*1	----	----	108	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/09/13	00:36:05	262	40	196	184	0	-2.5^*1	2.2e+13	4.2e+27	262	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/09/13	08:00:05	266	26	171	163	0	-1.7^*1	4.3e+13	6.3e+27	269	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/09/13	11:12:05	96	24	218	315	566	13.7^*1	1.4e+13	3.4e+27	94	C2 C3 PHTX DST Java Movie	Poor Event
2019/09/14	07:12:07	89	42	158	141	0	-3.8^*1	5.6e+13	7.0e+27	87	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/09/16	05:24:05	277	80	276	336	1163	53.7^*1	1.7e+12^*2	6.5e+26^*2	271	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/16	14:48:06	85	16	248	347	416	6.6^*1	----	----	91	C2 C3 PHTX DST Java Movie	Poor Event
2019/09/17	04:36:06	264	11	217	380	1161	55.7^*1	----	----	265	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/17	06:48:05	49	10	294	263	0	-14.9^*1	----	----	51	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/09/18	06:36:05	67	7	247	350	1107	49.6^*1	----	----	69	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/18	07:00:05	276	30	219	226	311	2.1^*1	3.2e+13	7.6e+27	275	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/09/18	20:56:54	71	8	135	120	0	-9.2^*1	----	----	71	C2 C3 PHTX DST Java Movie	Poor Event; Only C2
2019/09/20	02:00:05	113	26	137	201	521	11.4^*1	5.3e+13	5.0e+27	111	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/22	00:48:05	148	8	181	437	1979	167.2^*1	----	----	138	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2019/09/22	04:36:06	71	17	389	591	1436	83.9^*1	----	----	71	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/23	12:48:05	255	8	214	221	394	4.7^*1	----	----	262	C2 C3 PHTX DST Java Movie	Very Poor Event; Only 3 points; Only C2
2019/09/23	20:24:05	277	24	70	47	0	-3.0^*1	4.5e+13	1.1e+27	274	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/26	00:36:05	183	4	343	305	0	-19.0^*1	----	----	184	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/26	01:36:14	277	26	125	174	352	5.1^*1	5.5e+12	4.3e+26	282	C2 C3 PHTX DST Java Movie	Very Poor Event
2019/09/26	03:48:05	185	9	390	445	920	30.2^*1	----	----	186	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/26	05:24:05	94	19	283	267	210	-2.0^*1	----	----	95	C2 C3 PHTX DST Java Movie	Poor Event
2019/09/28	08:00:05	93	40	112	130	266	2.6^*1	9.7e+13	6.1e+27	95	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/30	05:12:05	291	15	167	196	389	5.5^*1	----	----	289	C2 C3 PHTX DST Java Movie	Very Poor Event; Only C2
2019/09/30	14:00:06	89	30	294	294	300	0.2^*1	5.9e+12	2.6e+27	91	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).