NOAK Observatory L02

Message Type: Report

Message ID: 20251126-7D-001

Issue Time: 2025-11-26T18:01Z

Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information (CCMC DONKI)
## Message Type: Weekly Space Weather Summary Report for November 19, 2025 - November 25, 2025
##
## Message Issue Date: 2025-11-26T18:01:36Z
## Report Coverage Begin Date: 2025-11-19T00:00Z
## Report Coverage End Date: 2025-11-25T23:59Z
## Message ID: 20251126-7D-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 low levels during this reporting period with 4 O-type CMEs and 14 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)
-----------------------------------------------------------------------------
2025-11-19T11:00Z Parker Solar Probe at 2025-11-21T01:00Z (glancing blow) (see notification 20251119-AL-003).
2025-11-20T01:08Z Juice at 2025-11-23T04:30Z, Europa Clipper at 2025-11-26T20:00Z (minor impact), Lucy at 2025-11-30T20:00Z (minor impact) (see notification 20251120-AL-001).
2025-11-20T15:23Z Juice at 2025-11-23T09:03Z, Europa Clipper at 2025-11-27T00:00Z (minor impact), Lucy at 2025-12-01T18:00Z (minor impact) (see notification 20251120-AL-002).
2025-11-21T10:30Z Europa Clipper at 2025-11-28T12:00Z (glancing blow), Juice at 2025-11-24T12:00Z (glancing blow), Lucy at 2025-12-03T10:00Z (glancing blow) (see notification 20251121-AL-001).
2025-11-21T19:24Z Mars at 2025-11-24T08:11Z, Juice at 2025-11-25T02:00Z (glancing blow) (see notification 20251122-AL-001).
2025-11-23T23:30Z BepiColombo at 2025-11-24T19:00Z (minor impact), STEREO A at 2025-11-26T22:00Z (glancing blow) (see notification 20251124-AL-001).

Geomagnetic activity reached minor levels with Kp index (a measure of geomagnetic activity, ranging 0-9) <= 5.00 for the reporting period. The highest value of Kp = 5.00 occurred during the synoptic period of 2025-11-25T06:00Z to 2025-11-25T09:00Z. This enhancement in geomagnetic activity was associated with the arrival of a coronal hole high speed stream detected at L1 by DSCOVR and ACE on 2025-11-24.

The > 2.0 MeV energetic electron flux in the Earth's outer radiation belt crossed the threshold level of 1000 pfu starting at 2025-11-19T12:25Z (see notifications 20251119-AL-001, 20251119-AL-002). This elevation of energetic electron flux levels was likely associated with the combined arrival of the S-type CME first seen in STEREO A COR2 at 2025-11-13T19:53Z and the O-type CME first seen in SOHO LASCO C2 at 2025-11-14T08:00Z. The energetic electron flux levels returned to background levels late on 2025-11-20.

The >2.0 MeV energetic electron flux levels crossed the threshold of 1000 pfu again at 2025-11-25T12:50Z (see notifications 20251125-AL-001, 20251125-AL-002). This elevation of energetic electron flux levels was likely associated with the arrival of a coronal hole high speed stream detected at L1 by DSCOVR and ACE on 2025-11-24. The energetic electron flux levels remained elevated through the end of the reporting period.

The energetic proton flux of >10 MeV protons detected at GOES and the 13-100 MeV protons at STEREO A were all at near background levels for the entire reporting period.

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
None Observed

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)
2025-11-19T11:00Z ~582 C -90/19 17 GOES
2025-11-20T01:08Z ~507 C 151/-37 41 STEREO A, SOHO, GOES
2025-11-20T15:23Z ~756 C 164/-29 40 STEREO A, GOES
2025-11-21T10:30Z ~512 C 112/-2 14 GOES, SOHO, STEREO A
2025-11-21T17:15Z ~591 C 85/7 17 GOES
2025-11-21T19:24Z ~1077 O -172/13 49 SOHO, STEREO A, GOES
2025-11-21T21:12Z ~916 C -72/-69 19 SOHO, STEREO A
2025-11-22T03:12Z ~579 C -151/58 24 SOHO, STEREO A, GOES
2025-11-23T23:30Z ~865 C 90/-23 21 GOES
2025-11-24T02:36Z ~1185 O 33/-40 10 SOHO, STEREO A, GOES
2025-11-24T12:48Z ~750 C -144/59 24 SOHO, STEREO A, GOES
2025-11-24T20:00Z ~799 C -127/58 20 SOHO, STEREO A, GOES
2025-11-25T02:48Z ~1128 O -121/61 24 SOHO, STEREO A, GOES
2025-11-25T06:08Z ~654 C -112/61 16 STEREO A, SOHO, GOES
2025-11-25T07:48Z ~658 C NONE(POS)/61 20 SOHO, GOES
2025-11-25T10:30Z ~826 C NONE(POS)/62 29 GOES, SOHO
2025-11-25T17:00Z ~1084 O NONE(POS)/61 30 SOHO, GOES
2025-11-25T20:00Z ~807 C NONE(POS)/28 41 SOHO, GOES

## Space Weather Outlook:
## Outlook Coverage Begin Date: 2025-11-26T00:00Z
## Outlook Coverage End Date: 2025-12-02T23:59Z

Solar activity is expected to vary between low and moderate levels during the outlook period. There are currently five Active Regions on the Earth-facing disk. Active Region 14291 (S13E16) has produced B-class and C-class flaring during the reporting period and may continue to produce similar levels of flaring activity during the outlook period.

Geomagnetic activity is expected to vary between low and moderate levels during the outlook period. The energetic electron flux levels at GOES exceeded the threshold of 1000 pfu starting at 2025-11-25T12:50Z (see notifications 20251125-AL-001, 20251125-AL-002) and may continue to be elevated during the outlook period due to the arrival of a coronal hole high speed stream detected at L1 by DSCOVR and ACE on 2025-11-24.

## 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

URL: View Details

Message Type: RBE

Message ID: 20251125-AL-002

Issue Time: 2025-11-25T14:01Z

Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Radiation Belt Enhancement
##
## Message Issue Date: 2025-11-25T14:01:21Z
## Message ID: 20251125-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 2025-11-25T12:50Z.

The elevated energetic electron flux levels are caused by the arrival of a coronal hole high speed stream which started on 2025-11-24, reaching a maximum speed of approximately 830 km/s. The solar wind speed observed at L1 is currently around 800 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: 2025-11-25T12:50:00-RBE-001.

## Notes:

URL: View Details

Message Type: CME

Message ID: 20251124-AL-001

Issue Time: 2025-11-24T02:37Z

Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME (BepiColombo, STEREO A)
##
## Message Issue Date: 2025-11-24T02:37:34Z
## Message ID: 20251124-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 GOES.

Start time of the event: 2025-11-23T23:30Z.

Estimated speed: ~865 km/s.

Estimated opening half-angle: 21 deg.

Direction (lon./lat.): 90/-23 in Heliocentric Earth Equatorial coordinates.

Activity ID: 2025-11-23T23:30:00-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 BepiColombo (minor impact) and STEREO A (glancing blow). The leading edge of the CME will reach BepiColombo at 2025-11-24T19:00Z (plus minus 7 hours). The flank of the CME may reach STEREO A at 2025-11-26T22:00Z (plus minus 7 hours).

Links to the movies of the modeled event (includes CME: 2025-11-23T23:30:00-CME-001):

(a) 2 AU outer boundary
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_2.0_anim.tim-den.gif
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_2.0_anim.tim-vel.gif
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_2.0_anim.tim-den-Stereo_A.gif
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_2.0_anim.tim-vel-Stereo_A.gif
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_2.0_ENLIL_CONE_timeline.gif
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_2.0_ENLIL_CONE_STA_timeline.gif
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_2.0_ENLIL_CONE_Bepi_timeline.gif

(b) 5.5 AU outer boundary
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_5.5_anim.tim-den.gif
http://iswa.gsfc.nasa.gov/downloads/20251124_030600_5.5_anim.tim-vel.gif

## 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

URL: View Details

GIFs:

NOAK Observatory (L02)

Alerts from NASA's DONKI Early Warning System (Space Weather, Sun)

NASA DONKI Notifications

Message Type: Report

Message Type: RBE

Message Type: RBE

Message Type: CME