CCMC CME Scoreboard
Prediction for CME (2025-05-31T14:23:00-CME-001)
CME Observed Time: 2025-05-31T14:23ZiSWAS Layout URL: https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/39225/-1
CME Note: Partial halo CME first seen in the East by STEREO A COR2 beginning at 2025-05-31T14:23Z. This CME is seen VERY faintly in SOHO LASCO C3 and GOES CCOR as a full halo signature in later frames. There is no abundantly clear source for this event. There is a small region of brightening and field line movement from AR 14100 (N15E08) beginning at approx. 2025-05-31T13:34Z as seen in SDO AIA 94 and 211 that may be associated with this CME. | Arrival Signature: Characterized by a brief jump in Btotal from an already elevated 10nT background (due to waning influence from previous IPS 2025-06-01T05:22Z) to 12.4nT, rising to around 14.5nT by 2025-06-02T20:29Z. Also observed a distinct rise in solar wind speed from around 580 km/s to around 660 km/s at this time, with a small elevation in temperature and density timelines at the start of this signature. This may be the arrival of CME 2025-05-31T14:23Z expected at 2025-06-02T22:43Z (+-7 hours), analysis is ongoing for this signature and if that CME may have been observed as part of earlier IPS 2025-06-01T05:22Z instead.
CME Shock Arrival Time: 2025-06-02T20:09Z
Observed Geomagnetic Storm Parameters due to CME:
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Predicted Arrival Time: 2025-06-02T22:43Z
Predicted geomagnetic storm max Kp range due to CME: 5.0 - 7.0
Prediction Method: Median of all Methods
Prediction Method Note:
This is the auto generated median of all submitted predictions for this CME.Lead Time: 42.48 hour(s)
Difference: -2.57 hour(s)
Prediction submitted by Auto Generated (CCMC) on 2025-06-01T01:40Z
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