Ειδοποιήσεις από το σύστημα έγκαιρης προειδοποίησης DONKI της NASA (διαστημικός καιρός, Ήλιος)
NASA DONKI Notifications
NASA DONKI Notifications
Message Type: RBE
Message ID: 20260405-AL-001
Issue Time: 2026-04-05T09:37Z
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Continued Radiation Belt Enhancement
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## Message Issue Date: 2026-04-05T09:37:50Z
## Message ID: 20260405-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 remains elevated, recently crossing the threshold of 1000 pfu at 2026-04-05T05:00Z.
The elevated energetic electron flux levels observed since 2026-04-03T09:05Z (see notification 20260403-AL-002) are likely caused by the combined arrival of a coronal hole high speed stream detected by ACE at L1 on 2026-04-02, reaching maximum sustained speeds of approximately 700 km/s, and the arrival of the CME with ID 2026-04-01T23:45:00-CME-001 (see notifications 20260402-AL-001, 20260402-AL-002, 20260402-AL-005). This CME was likely detected at L1 by ACE and DSCOVR at 2026-04-03T15:02Z (see notification 20260403-AL-003). The solar wind speed observed at L1 is currently around 560 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: 2026-04-03T09:05:00-RBE-001.
## Notes:
This coronal hole high speed stream was associated with the moderate geomagnetic storm with ID 2026-04-02T15:00:00-GST-001 (see notifications 20260402-AL-003, 20260402-AL-004).
The arrival of this CME was associated with the strong geomagnetic storm with ID 2026-04-03T15:00:00-GST-001 (see notifications 20260403-AL-004, 20260403-AL-005).
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - M7.5 Flare
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## Message Issue Date: 2026-04-04T01:26:42Z
## Message ID: 20260404-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:
Significant flare detected by GOES.
Flare start time: 2026-04-04T01:07Z.
Flare peak time: 2026-04-04T01:17Z.
Flare intensity: M7.5 class.
Source region: N02W02 (Active Region 14409) (based on SDO and GOES imagery).
Increased energetic proton fluxes possible. Updates on this event will be provided when available.
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Auto-generated Space Weather Notification - Flare intensity has crossed the threshold of M5.0
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## Message Issue Date: 2026-04-04T01:19:00Z
## Message ID: 20260404-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:
Significant flare detected by GOES. Flare intensity has crossed the threshold of M5.0.
Flare M5.0 crossing time: 2026-04-04T01:15Z.
Increased energetic proton fluxes possible. Updates on this event will be provided when available.
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Geomagnetic Storm
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## Message Issue Date: 2026-04-03T18:17:47Z
## Message ID: 20260403-AL-005
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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:
Ongoing space weather storm in the Earth's magnetosphere. Geomagnetic Kp index has reached level 6.67 (strong) during the synoptic period 2026-04-03T15:00Z to 2026-04-03T18:00Z.
The storm is caused by the Interplanetary Shock with ID 2026-04-03T15:02:00-IPS-001 (see notification 20260403-AL-003) and the arrival of the CME with ID 2026-04-01T23:45:00-CME-001 (see notifications 20260402-AL-001, 20260402-AL-002, 20260402-AL-005).
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
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## Message Issue Date: 2026-04-03T18:02:53Z
## Message ID: 20260403-AL-004
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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:
Ongoing space weather storm in the Earth's magnetosphere. Geomagnetic Kp index has reached level 6.67 (strong) during the synoptic period 2026-04-03T15:00Z to 2026-04-03T18:00Z.
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 - Interplanetary Shock
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## Message Issue Date: 2026-04-03T15:50:13Z
## Message ID: 20260403-AL-003
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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:
Significant interplanetary shock detected by ACE at L1 at 2026-04-03T15:02Z.
The shock is likely associated with the CME with ID 2026-04-01T23:45:00-CME-001 (see notifications 20260402-AL-001, 20260402-AL-002, and 20260402-AL-005). Magnetospheric compression and geomagnetic storm possible.
Activity ID: 2026-04-03T15:02:00-IPS-001.
## Notes:
This arrival signature is still developing and analysis is ongoing.
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: 2026-04-03T09:37:30Z
## Message ID: 20260403-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 is above 1000 pfu starting at 2026-04-03T09:05Z.
The elevated energetic electron flux levels are likely caused by the coronal hole high speed stream detected by ACE at L1 on 2026-04-02, reaching maximum sustained speeds of approximately 700 km/s. The solar wind speed observed at L1 is currently around 648 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: 2026-04-03T09:05:00-RBE-001.
## Notes:
This coronal hole high speed stream is also associated with the moderate geomagnetic storm with ID 2026-04-02T15:00:00-GST-001 (see notifications 20260402-AL-003, 20260402-AL-004).
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME update (OSIRIS-APEX, Missions Near Earth)
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## Message Issue Date: 2026-04-03T00:28:41Z
## Message ID: 20260403-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:
Update on CME with ID 2026-04-02T20:46:00-CME-001 (see previous notification 20260402-AL-006). Based on updated 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 this CME may affect OSIRIS-APEX (glancing blow). The flank of the CME may reach OSIRIS-APEX at 2026-04-05T21:00Z (plus minus 7 hours).
The simulation also indicates that the CME may have a glancing blow at NASA missions near Earth. Simulations indicate that the southern flank of the CME may reach NASA missions near Earth at about 2026-04-05T20:00Z (plus minus 7 hours). The roughly estimated expected range of the maximum Kp index is 3-4 (below minor).
Updated CME parameters are:
Start time of the event: 2026-04-02T20:46Z.
Estimated speed: ~832 km/s.
Estimated opening half-angle: 16 deg.
Direction (lon./lat.): 15/20 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2026-04-02T20:46:00-CME-001
Links to the movies of the modeled event (includes CME: 2026-04-02T20:46:00-CME-001):
## Notes: This CME event (2026-04-02T18:48:00-CME-001) is associated with M3.5 flare from Active Region 14044 (N12W18) with ID 2026-04-02T17:23:00-FLR-001 which peaked at 2026-04-02T18:15Z.
SCORE CME typification system:
S-type: CMEs with speeds less than 500 km/s
C-type: Common 500-999 km/s
O-type: Occasional 1000-1999 km/s
R-type: Rare 2000-2999 km/s
ER-type: Extremely Rare >3000 km/s
