Message ID: 20251216-AL-002
Issue Time: 2025-12-16T18:29Z
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: 2025-12-16T18:29:09Z
## Message ID: 20251216-AL-002
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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 2025-12-16T18:15Z.
The elevated energetic electron flux levels are caused by the arrival of a coronal hole high speed stream starting on 2025-12-12, reaching sustained speeds of approximately 715 km/s. The solar wind speed observed at L1 is currently around 650 km/s.
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: 2025-12-16T18:15:00-RBE-001.
## Notes:
URL: View Details
Message ID: 20251216-AL-001
Issue Time: 2025-12-16T18:23Z
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Auto-generated Space Weather Notification - Radiation Belt Enhancement
##
## Message Issue Date: 2025-12-16T18:23:39Z
## Message ID: 20251216-AL-001
##
## 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 2025-12-16T18:15Z.
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: 2025-12-16T18:15:00-RBE-001.
## Notes:
URL: View Details