NASA StreaM

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/46192/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-05-04T21:17:52Z ## Message ID: 20260504-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: Ongoing space weather storm in the Earth's magnetosphere. Geomagnetic Kp index has reached level 6.33 (moderate) during the synoptic period 2026-05-04T18:00Z to 2026-05-04T21:00Z. The storm is caused by the Interplanetary Shock with ID 2026-05-04T04:10:00-IPS-001 and the arrival of CME with ID 2026-04-30T12:38:00-CME-001 and/or CME with ID 2026-04-30T18:24:00-CME-001. 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: 2026-05-04T18:00:00-GST-001. ## Notes:

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/45981/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-04-19T12:20:30Z ## Message ID: 20260419-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: A space weather storm has recently affected Earth's magnetosphere. Geomagnetic Kp index has reached level 5.67 (moderate) during the synoptic period 2026-04-19T06:00Z to 2026-04-19T09:00Z (see notifications 20260418-AL-001, 20260418-AL-002). The storm is likely caused by the coronal hole high speed stream starting on 2026-04-17. 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: 2026-04-18T06:00:00-GST-001. ## Notes:

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/45731/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-04-03T18:17:47Z ## Message ID: 20260403-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: 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. Activity ID: 2026-04-03T15:00:00-GST-001. ## Notes:

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/45535/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-04-02T18:16:52Z ## Message ID: 20260402-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: Ongoing space weather storm in the Earth's magnetosphere. Geomagnetic Kp index has reached level 5.67 (moderate) during the synoptic period 2026-04-02T15:00Z to 2026-04-02T18:00Z. The storm is caused by a coronal hole high speed stream starting on 2026-04-02. 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: 2026-04-02T15:00:00-GST-001. ## Notes:

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/45511/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-03-22T18:08:28Z ## Message ID: 20260322-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: Intensifying space weather storm in the Earth's magnetosphere. Geomagnetic Kp index has reached level 6.67 (strong) during the synoptic period 2026-03-22T15:00Z to 2026-03-22T18:00Z. The storm is likely caused by the arrival of a coronal hole high speed stream starting on 2026-03-21. 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: 2026-03-22T09:00:00-GST-001. ## Notes:

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/45234/-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).

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/45201/-1

## 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).

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/GST/45068/-1