Message ID: 20251212-AL-001
Issue Time: 2025-12-12T16:35Z
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Radiation Belt Enhancement
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## Message Issue Date: 2025-12-12T16:35:02Z
## Message ID: 20251212-AL-001
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## Disclaimer: NOAA's Space Weather Prediction Center is the United States Government official source for space weather forecasts. This "Experimental Research Information" consists of preliminary NASA research products and should be interpreted and used accordingly.
## Summary:
Significantly elevated energetic electron fluxes in the Earth's outer radiation belt. GOES "greater than 2.0 MeV" integral electron flux is above 1000 pfu starting at 2025-12-12T14:50Z.
The elevated energetic electron flux levels are likely caused by the combined arrival of CME with ID 2025-12-08T01:38:00-CME-001 (see notifications 20251208-AL-004, 20251208-AL-007) and CME with ID 2025-12-08T05:12:00-CME-001 (see notifications 20251208-AL-006, 20251208-AL-007, 20251210-AL-002).
NASA spacecraft at GEO, MEO and other orbits passing through or in the vicinity of the Earth's outer radiation belt can be impacted.
Activity ID: 2025-12-12T14:50:00-RBE-001.
## Notes:
The arrival of this CME is also associated with geomagnetic storm with ID 2025-12-10T21:00:00-GST-001 (see notifications 20251211-AL-001 and 20251211-AL-002) and modeled magnetopause crossing with ID 2025-12-10T21:58:00-MPC-001 (see notification 20251210-AL-003).
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