https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/HSS/45236/-1
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-03-21T12:18:49Z ## Message ID: 20260321-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: A space weather storm has recently affected Earth's magnetosphere. Geomagnetic Kp index has reached level 7 (strong) during the synoptic period 2026-03-21T00:00Z to 2026-03-21T03:00Z. The storm is caused by the Interplanetary Shock with ID 2026-03-20T20:17:00-IPS-001 (see notification 20260320-AL-004) and the arrival of the CME with ID 2026-03-18T09:23:00-CME-001 (see notifications 20260318-AL-002, 20260318-AL-003). 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. Activity ID: 2026-03-20T18:00:00-GST-001. ## Notes: This event is associated with Magnetopause Crossing with ID 2026-03-20T21:13:00-MPC-001 (see notification 20260320-AL-005).
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Magnetopause Crossing ## ## Message Issue Date: 2026-03-20T21:39:41Z ## Message ID: 20260320-AL-005 ## ## 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: Strong compression of the magnetosphere detected. Simulations carried out at NASA Community Coordinated Modeling Center indicate that the magnetopause separating magnetospheric and solar wind plasma is close to the geosynchronous orbit starting at 2026-03-20T21:13Z. The activity is associated with the Interplanetary Shock with ID 2026-03-20T20:17:00-IPS-001 (see notification 20260320-AL-004) and with the arrival of the CME with ID 2026-03-18T09:23:00-CME-001 (see notifications 20260318-AL-002, 20260318-AL-003). NASA spacecraft at the geosynchronous orbits may be exposed to solar wind plasma and magnetic field conditions. Activity ID: 2026-03-20T21:13:00-MPC-001. ## Notes This Interplanetary Shock (2026-03-20T20:17:00-IPS-001) was associated with Geomagnetic Storm with ID 2026-03-20T18:00:00-GST-001 (see notification 20260320-AL-003). Additional compression of the magnetosphere may have been associated with the preceding Interplanetary Shock with ID 2026-03-20T01:31:00-IPS-001 (see notification 20260320-AL-001 ).
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Interplanetary Shock ## ## Message Issue Date: 2026-03-20T21:25:41Z ## Message ID: 20260320-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: Significant interplanetary shock detected by ACE at L1 at 2026-03-20T20:17Z. The shock is likely caused by the CME with ID 2026-03-18T09:23:00-CME-001 (see notifications 20260318-AL-002, 20260318-AL-003). Strong magnetospheric compression and geomagnetic storm are also observed (see notification 20260320-AL-003). Activity ID: 2026-03-20T20:17:00-IPS-001. ## Notes:
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Continued Radiation Belt Enhancement ## ## Message Issue Date: 2026-03-19T16:29:03Z ## Message ID: 20260319-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 2026-03-19T05:30Z. The elevated energetic electron flux levels observed since 2026-03-15T16:05Z are caused by the arrival of a coronal hole high speed stream starting on 2026-03-13, reaching maximum sustained speeds of approximately 700 km/s (see notifications 20260315-AL-001 and 20260317-AL-001). The solar wind speed observed at L1 is currently around 345 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: 2026-03-15T16:05:00-RBE-001. ## Notes: This coronal hole high speed stream is also associated with geomagnetic storm with ID 2026-03-13T21:00:00-GST-001 (see notifications 20260314-AL-001, 20260314-AL-002, 20260314-AL-003, 20260314-AL-004).
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-03-14T12:16:44Z ## Message ID: 20260314-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: A space weather storm has recently affected Earth's magnetosphere. Geomagnetic Kp index has reached level 6 (moderate) during the synoptic period 2026-03-14T03:00Z to 2026-03-14T06:00Z. The storm is caused by coronal hole high speed stream starting on 2026-03-13. 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. Activity ID: 2026-03-13T21:00:00-GST-001. ## Notes: This event is associated with Interplanetary Shock with ID 2026-03-13T07:06:00-IPS-001 (see notification 20260313-AL-001).
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Continued Radiation Belt Enhancement ## ## Message Issue Date: 2026-03-12T17:16:51Z ## Message ID: 20260312-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 2026-03-12T12:25Z. The elevated energetic electron flux levels observed since 2026-03-08T14:55Z are caused by a coronal hole high speed stream starting on 2026-03-06 (see notifications 20260308-AL-001, 20260308-AL-002, 20260310-AL-001). 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:
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