Message ID: 20260311-7D-001
Issue Time: 2026-03-11T17:56Z
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information (CCMC DONKI)
## Message Type: Weekly Space Weather Summary Report for March 04, 2026 - March 10, 2026
##
## Message Issue Date: 2026-03-11T17:56:28Z
## Report Coverage Begin Date: 2026-03-04T00:00Z
## Report Coverage End Date: 2026-03-10T23:59Z
## Message ID: 20260311-7D-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 to moderate levels during this reporting period with 11 C-type CMEs (see details below).
Geomagnetic activity was at minor levels with Kp index (a measure of geomagnetic activity, ranging 0-9) <= 4.67 for the reporting period. The highest value of Kp = 4.67 occurred during the synoptic period of 2026-03-08T00:00Z to 2026-03-08T03:00Z. 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 2026-03-06.
The > 2.0 MeV energetic electron flux in the Earth's outer radiation belt crossed the threshold level of 1000 pfu starting at 2026-03-08T14:55Z (see notifications 20260308-AL-001, 20260308-AL-002, 20260310-AL-001). This elevation of energetic electron flux levels was associated with the arrival of coronal hole high speed stream detected by ACE and DSCOVR at L1 on 2026-03-06. 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 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)
2026-03-04T00:48Z ~855 C NONE(POS)/28 12 SOHO, GOES
2026-03-04T20:36Z ~636 C NONE(POS)/20 10 SOHO, GOES
2026-03-05T04:36Z ~536 C 176/-28 19 SOHO, STEREO A
2026-03-05T22:24Z ~508 C -90/-2 10 SOHO, GOES
2026-03-07T10:38Z ~540 C NONE(POS)/-15 10 STEREO A
2026-03-08T09:48Z ~503 C -105/34 18 SOHO, STEREO A, GOES
2026-03-08T14:48Z ~767 C -16/30 10 SOHO, STEREO A, GOES
2026-03-08T18:08Z ~565 C -69/3 15 STEREO A, GOES
2026-03-09T13:00Z ~640 C NONE(POS)/-61 17 GOES
2026-03-10T02:24Z ~544 C -90/-10 13 SOHO, GOES
2026-03-10T04:48Z ~550 C -63/27 20 SOHO
## Space Weather Outlook:
## Outlook Coverage Begin Date: 2026-03-11T00:00Z
## Outlook Coverage End Date: 2026-03-17T23:59Z
Solar activity is expected to vary between low to moderate levels during the outlook period. There are currently seven numbered Active Regions on the Earth-facing disk. Active Regions 14387 (N09E32), 14381 (N08W75), and 14389 (N13E52) have produced 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 be at low to moderate levels during the outlook period. A coronal hole (as seen in available EUV imagery from GOES/SUVI 195), with its westernmost extent centered around S05E05, may reach geoeffective longitudes on or around 2026-03-13. The energetic electron flux levels at GOES mentioned above exceeded the threshold of 1000 pfu at 2026-03-08T14:55Z and may continue to be elevated during the outlook period.
## 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 ID: 20260310-AL-001
Issue Time: 2026-03-10T17:05Z
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: 2026-03-10T17:05:52Z
## Message ID: 20260310-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 first crossed the threshold of 1000 pfu starting at 2026-03-08T14:55Z. The most recent crossing of the 1000 pfu threshold was at 2026-03-09T19:45Z and the fluxes are currently elevated but below the threshold.
The elevated energetic electron flux levels are caused by a coronal hole high speed stream starting on 2026-03-06 (see notifications 20260308-AL-001 and 20260308-AL-002).
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: 2026-03-08T14:55:00-RBE-001.
## Notes:
URL: View Details
Message ID: 20260308-AL-002
Issue Time: 2026-03-08T15:08Z
Message Body: ## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - Radiation Belt Enhancement
##
## Message Issue Date: 2026-03-08T15:08:19Z
## Message ID: 20260308-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 2026-03-08T14:55Z.
The elevated energetic electron flux levels are caused by a coronal hole high speed stream starting on 2026-03-06, reaching maximum sustained speeds of approximately 650 km/s. The solar wind speed observed at L1 is currently around 498 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: 2026-03-08T14:55:00-RBE-001.
## Notes:
URL: View Details
Message ID: 20260308-AL-001
Issue Time: 2026-03-08T15:02Z
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: 2026-03-08T15:02:48Z
## Message ID: 20260308-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 2026-03-08T14:55Z.
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: 2026-03-08T14:55:00-RBE-001.
## Notes:
URL: View Details