Ειδοποιήσεις από το σύστημα έγκαιρης προειδοποίησης DONKI της NASA (διαστημικός καιρός, Ήλιος)
NASA DONKI Notifications
NASA DONKI Notifications
Message Type: CME
Message ID: 20251019-AL-001
Issue Time: 2025-10-19T21:43Z
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CMEs (Parker Solar Probe, BepiColombo)
##
## Message Issue Date: 2025-10-19T21:43:27Z
## Message ID: 20251019-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:
Multiple CMEs have been detected as follows:
1: C-type CME detected by STEREO A / GOES / SOHO.
Start time of the event: 2025-10-18T17:12Z.
Estimated speed: ~609 km/s.
Estimated opening half-angle: 22 deg.
Direction (lon./lat.): -46/11 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2025-10-18T17:12:00-CME-001
2: C-type CME detected by STEREO A / GOES / SOHO.
Start time of the event: 2025-10-18T21:48Z.
Estimated speed: ~676 km/s.
Estimated opening half-angle: 21 deg.
Direction (lon./lat.): -46/10 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2025-10-18T21:48:00-CME-001
Based on preliminary analysis by the Moon to Mars Space Weather Analysis Office and heliospheric modeling carried out at NASA Community Coordinated Modeling Center, it is estimated that the CMEs may impact Parker Solar Probe and BepiColombo (glancing blow). The combined leading edge of the CMEs will reach Parker Solar Probe at 2025-10-20T18:14Z and its flank will reach BepiColombo at 2025-10-19T23:00Z (plus minus 7 hours).
Links to the movies of the modeled event (includes CMEs: 2025-10-18T17:12:00-CME-001, 2025-10-18T21:48:00-CME-001):
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Geomagnetic Storm
##
## Message Issue Date: 2025-10-18T21:24:13Z
## Message ID: 20251018-AL-002
##
## 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:
Ongoing space weather storm in the Earth's magnetosphere. Geomagnetic Kp index has reached level 6 (moderate) during the synoptic period 2025-10-18T18:00Z to 2025-10-18T21:00Z.
The storm is possibly caused by a glancing blow from the CME with ID 2025-10-15T15:36:00-CME-001.
NASA spacecraft at GEO, MEO, polar and other orbits passing through or in the vicinity of the Earth's ring current and auroral regions can be impacted.
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Auto-generated Space Weather Notification - Geomagnetic Storm
##
## Message Issue Date: 2025-10-18T21:03:55Z
## Message ID: 20251018-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:
Ongoing space weather storm in the Earth's magnetosphere. Geomagnetic Kp index has reached level 6 (moderate) during the synoptic period 2025-10-18T18:00Z to 2025-10-18T21:00Z.
NASA spacecraft at GEO, MEO, polar and other orbits passing through or in the vicinity of the Earth's ring current and auroral regions can be impacted.
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Continued Radiation Belt Enhancement
##
## Message Issue Date: 2025-10-17T15:31:40Z
## Message ID: 20251017-AL-002
##
## 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 remains elevated, recently crossing the threshold of 1000 pfu at 2025-10-17T13:45Z.
The elevated energetic electron flux levels observed since 2025-10-12T12:55Z are caused by a coronal hole high speed stream starting on 2025-10-11, reaching maximum sustained speeds of approximately 800 km/s (see notifications 20251013-AL-002 and 20251015-AL-002). The solar wind speed observed at L1 is currently around 400 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.
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Interplanetary Shock
##
## Message Issue Date: 2025-10-17T13:41:24Z
## Message ID: 20251017-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:
Significant interplanetary shock detected by ACE at L1 at 2025-10-17T09:32Z.
The shock is likely caused by CME with ID 2025-10-13T06:24:00-CME-001 and CME with ID 2025-10-13T13:53:00-CME-001 (see notification 20251013-AL-004). Some magnetospheric compression and geomagnetic storm possible.
