Ειδοποιήσεις από το σύστημα έγκαιρης προειδοποίησης DONKI της NASA (διαστημικός καιρός, Ήλιος)
NASA DONKI Notifications
NASA DONKI Notifications
Message Type: CME
Message ID: 20260902-AL-002
Issue Time: 2026-09-02T22:27Z
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME (Europa Clipper)
##
## Message Issue Date: 2026-09-02T22:27:40Z
## Message ID: 20260902-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:
O-type CME detected by GOES / SOHO.
Start time of the event: 2026-09-02T19:36Z.
Estimated speed: ~1038 km/s.
Estimated opening half-angle: 35 deg.
Direction (lon./lat.): -90/27 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2026-09-02T19:36:00-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 Europa Clipper (glancing blow). The flank of the CME may reach Europa Clipper at 2026-09-06T12:00Z (plus minus 7 hours).
Links to the movies of the modeled event (includes CME: 2026-09-02T19:36:00-CME-001):
This CME event (2026-09-02T19:36:00-CME-001) is associated with the M3.0 flare (N12E90) with ID 2026-09-02T18:57:00-FLR-001 which peaked at 2026-09-02T19:20Z.
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
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information (CCMC DONKI)
## Message Type: Weekly Space Weather Summary Report for August 26, 2026 - September 01, 2026
##
## Message Issue Date: 2026-09-02T19:50:11Z
## Report Coverage Begin Date: 2026-08-26T00:00Z
## Report Coverage End Date: 2026-09-01T23:59Z
## Message ID: 20260902-7D-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 activity was at moderate levels during this reporting period with 2 M-class flares, 1 O-type CME, and 11 C-type CMEs (see details below).
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 was estimated that the following CMEs were predicted to impact the listed locations:
CME Starting time | Predicted Impacts (plus minus 7 hours)
-----------------------------------------------------------------------------
2026-08-26T22:24Z Europa Clipper at 2026-08-30T06:00Z (glancing blow), OSIRIS-APEX at 2026-08-31T00:00Z (glancing blow), Solar Orbiter at 2026-08-28T03:00Z (glancing blow) (see notification 20260827-AL-001).
2026-08-27T18:00Z BepiColombo at 2026-08-28T07:33Z, Lucy at 2026-09-12T21:00Z (glancing blow) (see notifications 20260827-AL-003, 20260827-AL-004).
2026-08-28T08:48Z BepiColombo at 2026-08-29T08:32Z (see notification 20260828-AL-001).
2026-08-30T01:48Z Europa Clipper at 2026-09-03T01:00Z (glancing blow), OSIRIS-APEX at 2026-09-03T16:00Z (glancing blow) (see notification 20260830-AL-001).
2026-08-31T05:24Z Europa Clipper at 2026-09-04T00:00Z (glancing blow), OSIRIS-APEX at 2026-09-04T20:00Z (glancing blow) (see notification 20260831-AL-004).
2026-08-31T07:24Z Europa Clipper at 2026-09-03T08:00Z (minor impact), OSIRIS-APEX at 2026-09-04T06:00Z (minor impact) (see notification 20260831-AL-003).
Geomagnetic activity was at below minor levels with Kp index (a measure of geomagnetic activity, ranging 0-9) <= 4.33 for the reporting period. The highest value of Kp = 4.33 occurred during the synoptic periods of 2026-08-28T18:00Z to 2026-08-28T21:00Z, 2026-08-28T21:00Z to 2026-08-29T00:00Z, and 2026-09-01T00:00Z to 2026-09-01T03:00Z. This enhancement in geomagnetic activity was associated with the interplanetary shock detected at L1 by SOLAR-1 at 2026-08-28T08:30Z which was likely associated with the combined arrivals of the C-Type CME first seen in STEREO A COR2 at 2026-08-25T10:38Z, the C-Type CME first seen in STEREO A COR2 at 2026-08-25T12:53Z, and the S-Type CME first seen in STEREO A COR2 at 2026-08-25T14:53Z, as well as the arrival of a coronal hole high speed stream detected at L1 by SOLAR-1 on 2026-08-28.
The > 2.0 MeV energetic electron flux detected at GOES was elevated above the threshold level of 1000 pfu at the beginning of the reporting period due to a threshold crossing from a previous reporting period starting at 2026-08-21T10:15Z. This elevation of energetic electron flux levels was likely associated with the arrival of a coronal hole high speed stream detected at L1 by SOLAR-1 on 2026-08-18 in a previous reporting period. The fluxes returned to background levels on 2026-08-28.
The >2.0 MeV energetic electron flux levels crossed the threshold of 1000 pfu again at 2026-08-31T11:20Z (see notifications 20260831-AL-001, 20260831-AL-002, 20260902-AL-001). This subsequent elevation of energetic electron flux levels was likely associated with the combined arrivals of the C-Type CME first seen in STEREO A COR2 at 2026-08-25T10:38Z, the C-Type CME first seen in STEREO A COR2 at 2026-08-25T12:53Z, and the S-Type CME first seen in STEREO A COR2 at 2026-08-25T14:53Z, as well as the arrival of a coronal hole high speed stream detected at L1 by SOLAR-1 on 2026-08-28. The energetic electron flux levels remained elevated through the end of the reporting period.
The 13-100 MeV protons at STEREO A were at near background levels for the entire reporting period. The energetic proton flux of >10 MeV protons detected at GOES and the flux of one or more of the >15.8 MeV proton channels at SOHO were elevated but below respective thresholds at the start of the reporting period due to the O-type CME first seen in SOHO LASCO C2 at 2026-08-20T18:48Z as well as the O-type CME first seen in SOHO LASCO C2 at 2026-08-21T09:36Z which was associated with the M1.6 flare peaking at 2026-08-21T10:18Z from Active Region 14507 (N04W88). The fluxes subsided to background levels on 2026-08-28.
Space Weather Impact:
Space weather impacts on NASA spacecraft are expected to have been moderate this reporting period due to the elevated energetic electron flux in the Earth's outer radiation belt described above.
##Events:
Flares (M-class and above)
Date Start Stop Peak Class Location
2026-08-26 06:29:00 06:38:00 06:34:00 M2.2 N03W02 ( 14513 )
2026-08-26 12:06:00 12:22:00 12:14:00 M1.0 N04W05 ( 14513 )
CMEs (>500 km/s):
Earth directed:
NONE
Non-Earth directed (POS = Plane Of Sky):
Starting time Speed (km/s) Type Direction (LON/LAT in HEEQ) Half-Angle width (degrees) Detecting spacecraft (real-time)
2026-08-26T22:24Z ~537 C -45/0 13 SOHO
2026-08-27T01:09Z ~827 C NONE(POS)/-24 10 STEREO A
2026-08-27T18:00Z ~1095 O -174/13 47 GOES, STEREO A
2026-08-27T18:30Z ~592 C NONE(POS)/-13 36 GOES, SOHO
2026-08-28T00:24Z ~838 C -171/40 s 10 SOHO, STEREO A
2026-08-28T08:48Z ~609 C -166/35 27 SOHO, STEREO A, GOES
2026-08-28T18:30Z ~586 C NONE(POS)/14 38 GOES, SOHO
2026-08-29T15:38Z ~577 C -90/33 14 STEREO A, GOES
2026-08-30T01:48Z ~513 C -88/22 31 SOHO, STEREO A, GOES
2026-08-30T13:38Z ~514 C NONE(POS)/49 11 STEREO A
2026-08-31T05:24Z ~550 C -72/8 19 SOHO, STEREO A, GOES
2026-08-31T07:24Z ~841 C -48/-16 21 SOHO, STEREO A, GOES
## Space Weather Outlook:
## Outlook Coverage Begin Date: 2026-09-02T00:00Z
## Outlook Coverage End Date: 2026-09-08T23:59Z
Solar activity is expected to be at low and moderate levels during the outlook period. There are currently three numbered Active Regions on the Earth-facing disk. Active Regions 14520 (S12W31) and 14521 (N09E42) produced C-class flaring activity in the reporting period and may continue to produce similar levels of flaring activity during the outlook period. An unnumbered region located at approximately N13E90 produced a M3.0 class flare peaking at 2026-09-02T19:20Z and may continue to produce similar levels of flaring activity during the outlook period.
Geomagnetic activity is expected to be at low to moderate levels during the outlook period. A coronal hole centered around S02E17 (as seen in available imagery from SDO/AIA 193) may reach geoeffective longitudes on or around 2026-09-06.
## Notes:
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
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: 2026-09-02T12:23:30Z
## Message ID: 20260902-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 remains elevated, recently crossing the threshold of 1000 pfu at 2026-09-02T10:00Z.
The elevated energetic electron flux levels are likely caused by the arrival of one or more of the CMEs with ID 2026-08-25T10:38:00-CME-001 (see notifications 20260825-AL-003, 20260825-AL-006, 20260825-AL-007, 20260825-AL-012), CME with ID 2026-08-25T12:53:00-CME-001 (see notifications 20260825-AL-005, 20260825-AL-007), and/or CME with ID 2026-08-25T14:53:00-CME-001, as well as the arrival of a coronal hole high speed stream which started on 2026-08-28, reaching a maximum speed of approximately 480 km/s (see notifications 20260831-AL-001 and 20260831-AL-002). The likely combined arrival of one or more of these CMEs was detected at L1 by SOLAR-1 at 2026-08-28T08:30Z. The solar wind speed observed at L1 is currently around 360 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 (Europa Clipper, OSIRIS-APEX)
##
## Message Issue Date: 2026-08-31T16:51:50Z
## Message ID: 20260831-AL-004
##
## 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: 2026-08-31T05:24Z.
Estimated speed: ~550 km/s.
Estimated opening half-angle: 19 deg.
Direction (lon./lat.): -72/8 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2026-08-31T05:24:00-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 Europa Clipper (glancing blow) and OSIRIS-APEX (glancing blow). The flank of the CME will reach Europa Clipper at 2026-09-04T00:00Z and OSIRIS-APEX at 2026-09-04T20:00Z (plus minus 7 hours).
Links to the movies of the modeled event (includes CME: 2026-08-31T05:24:00-CME-001):
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME (Europa Clipper, OSIRIS-APEX)
##
## Message Issue Date: 2026-08-31T15:11:18Z
## Message ID: 20260831-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:
C-type CME detected by STEREO A / GOES / SOHO.
Start time of the event: 2026-08-31T07:24Z.
Estimated speed: ~841 km/s.
Estimated opening half-angle: 21 deg.
Direction (lon./lat.): -48/-16 in Heliocentric Earth Equatorial coordinates.
Activity ID: 2026-08-31T07:24:00-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 Europa Clipper (minor impact) and OSIRIS-APEX (minor impact). The leading edge of the CME will reach Europa Clipper at 2026-09-03T08:00Z and OSIRIS-APEX at 2026-09-04T06:00Z (plus minus 7 hours).
Links to the movies of the modeled event (includes CME: 2026-08-31T07:24:00-CME-001):
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Radiation Belt Enhancement
##
## Message Issue Date: 2026-08-31T12:09:39Z
## Message ID: 20260831-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 2026-08-31T11:20Z.
The elevated energetic electron flux levels are likely caused by the arrival of one or more of the CMEs with ID 2026-08-25T10:38:00-CME-001 (see notifications 20260825-AL-003, 20260825-AL-006, 20260825-AL-007, 20260825-AL-012), CME with ID 2026-08-25T12:53:00-CME-001 (see notifications 20260825-AL-005, 20260825-AL-007), and/or CME with ID 2026-08-25T14:53:00-CME-001, as well as the arrival of a coronal hole high speed stream which started on 2026-08-28, reaching a maximum speed of approximately 480 km/s. The likely combined arrival of one or more of these CMEs was detected at L1 by SOLAR-1 at 2026-08-28T08:30Z. The solar wind speed observed at L1 is currently around 415 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: Auto-generated Space Weather Notification - Radiation Belt Enhancement
##
## Message Issue Date: 2026-08-31T11:28:54Z
## Message ID: 20260831-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 2026-08-31T11:20Z.
NASA spacecraft at GEO, MEO and other orbits passing through or in the vicinity of the Earth's outer radiation belt can be impacted.
