Ειδοποιήσεις από το σύστημα έγκαιρης προειδοποίησης DONKI της NASA (διαστημικός καιρός, Ήλιος)
NASA DONKI Notifications
NASA DONKI Notifications
Message Type: SEP
Message ID: 20260824-AL-001
Issue Time: 2026-08-24T11:33Z
Message Body: *** This SEP event notification was triggered by a data gap in STEREO A Beacon data. Once Beacon data returned, the 13-100 MeV proton flux was still above threshold which triggered an automatic notification with ID 20260824-AL-001 (see below). ***
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Auto-generated Space Weather Notification - SEP
##
## Message Issue Date: 2026-08-24T11:33:12Z
## Message ID: 20260824-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:
Solar energetic particle event detected by STEREO A. The flux of 13-100 MeV protons exceeds 10^(-1) pfu/MeV starting at 2026-08-23T23:59Z.
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: 2026-08-23T14:58:42Z
## Message ID: 20260823-AL-003
##
## 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 2026-08-23T09:15Z.
The elevated energetic electron flux levels observed since 2026-08-21T10:15Z are caused by coronal hole high speed stream starting on 2026-08-18 reaching maximum sustained speeds of approximately 630 km/s (see notifications 20260821-AL-001 and 20260821-AL-002). The solar wind speed observed at L1 is currently around 410 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 - CME update (Mars, Psyche, STEREO A)
##
## Message Issue Date: 2026-08-23T14:20:03Z
## Message ID: 20260823-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:
Update on CME with ID 2026-08-23T00:12:00-CME-001 (see previous notification 20260823-AL-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 CME may impact Mars, Psyche, and STEREO A (glancing blow). The leading edge of the CME will reach Mars at 2026-08-26T10:03Z and Psyche at 2026-08-26T14:53Z (plus minus 7 hours). The flank of the CME may reach STEREO A at 2026-08-25T08:00Z (plus minus 7 hours).
Updated CME parameters are (event downgraded to C-type):
Start time of the event: 2026-08-23T00:12Z.
Estimated speed: ~959 km/s.
Estimated opening half-angle: 16 deg.
Direction (lon./lat.): 95/10 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2026-08-23T00:12:00-CME-001
Links to the movies of the modeled event (includes CME: 2026-08-23T00:12:00-CME-001):
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME (Mars, Psyche, STEREO A)
##
## Message Issue Date: 2026-08-23T02:19:07Z
## Message ID: 20260823-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:
O-type CME detected by GOES / SOHO.
Start time of the event: 2026-08-23T00:12Z.
Estimated speed: ~1148 km/s.
Estimated opening half-angle: 10 deg.
Direction (lon./lat.): 90/7 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2026-08-23T00:12:00-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 CME may impact Mars, Psyche (minor impact), and STEREO A (glancing blow). The leading edge of the CME will reach Mars at 2026-08-26T12:46Z and Psyche at 2026-08-26T13:00Z, and the flank of the CME will reach STEREO A at 2026-08-25T07:00Z (plus minus 7 hours).
Links to the movies of the modeled event (includes CME: 2026-08-23T00:12:00-CME-001):
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME (Mars, Psyche)
##
## Message Issue Date: 2026-08-22T14:03:31Z
## Message ID: 20260822-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:
C-type CME detected by STEREO A / GOES / SOHO.
Start time of the event: 2026-08-22T06:30Z.
Estimated speed: ~727 km/s.
Estimated opening half-angle: 12 deg.
Direction (lon./lat.): 104/2 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2026-08-22T06:30:00-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 CME may impact Mars (minor impact) and Psyche (minor impact). The leading edge of the CME may reach Mars at 2026-08-26T01:00Z and Psyche at 2026-08-26T06:00Z (plus minus 7 hours).
Links to the movies of the modeled event (includes CME: 2026-08-22T06:30:00-CME-001):
