CME Analysis Information (for CME activity ID: 2025-03-16T00:12:00-CME-001)
Catalog: M2M_CATALOG
Data Level: 0 (0=real-time, 1=real-time and checked by supervising forecaster, 2=retrospective science level data analysis)
Use as primary measurement: true
Measurement Technique:
SWPC_CAT
Detecting Instruments:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
Image Type:
running difference
Speed (km/s):
1213.0
Speed measured at height (Rs): None Entered
Type: O
Direction (LON/LAT in HEEQ):
109.0/
-16.0
Half Angular Width (degree): 31.0
Minor Half-width (degree): None Entered
Tilt (degree): None Entered
Time@21.5: 2025-03-16T03:42Z
Info/Session URL: None Entered
Note: Uncertain analysis based solely on the best possible fit with two coronagraphs. The high posts-eruptive arcades behind the west limb in STEREO A EUV imagery showing much later than the original coronal signatures of opening field lines indicate the source with the longitude >120 deg. However, no fit was found with longitudes >115 deg and the best fit was obtained with the longitude of 109 degrees. Likely deflection of about 10 to 20 degrees eastward relative to the source at W125 would be caused by a large coronal hole located to the northwest of Active Region 4012 at approximately W125.
Measurement Feature Code(s):
LE: Leading Edge
General Keyword(s):
Submitted on 2025-03-16T20:31Z by
Chris Stubenrauch
A Notification with ID
20250316-AL-001 was sent on 2025-03-16T15:30Z
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