NASA StreaM

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - CME update (ensemble) (Missions Near Earth) ## ## Message Issue Date: 2026-06-06T20:44:57Z ## Message ID: 20260606-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: Ensemble modeling update on CME with ID 2026-06-06T14:11:00-CME-001 (see previous notifications 20260606-AL-001, 20260606-AL-004). Based on heliospheric ensemble modeling carried out at the Moon to Mars Space Weather Analysis Office, it is estimated that the CME may impact NASA missions near Earth. Out of 36 ensemble members (see notes section), 36 (100%) indicate impact at NASA missions near Earth. Ensemble simulations indicate that the leading edge of the CME will reach NASA missions near Earth between about 2026-06-08T01:01Z and 2026-06-08T13:57Z (average arrival 2026-06-08T06:50Z). The ensemble-based forecast indicates that there is a 63% chance for the maximum Kp index to be in the 6-8 range (moderate to severe). Links to the ensemble details of the modeled event: https://iswa.gsfc.nasa.gov/ENSEMBLE/2026-06-06_ncmes1_sims36_M2M-SWAO085/20260606_141100_ncmes1_sims36_M2M-SWAO085_anim_tim-den.gif https://iswa.gsfc.nasa.gov/ENSEMBLE/2026-06-06_ncmes1_sims36_M2M-SWAO085/20260606_141100_ncmes1_sims36_M2M-SWAO085_arrival_Earth.gif https://iswa.gsfc.nasa.gov/ENSEMBLE/2026-06-06_ncmes1_sims36_M2M-SWAO085/20260606_141100_ncmes1_sims36_M2M-SWAO085_Earth_stack.gif ## Notes: The CME event with ID 2026-06-06T14:11:00-CME-001 is also predicted to impact Lucy at 2026-06-16T22:14Z, BepiColombo at 2026-06-07T03:06Z, Europa Clipper at 2026-06-09T12:45Z, and OSIRIS-APEX at 2026-06-08T20:06Z, Juice at 2026-06-10T05:00Z (glancing blow), and STEREO A at 2026-06-09T02:00Z (glancing blow) (plus minus 7 hours) based on previous heliospheric modeling (see notifications 20260606-AL-001, 20260606-AL-004). This CME event (2026-06-06T14:11:00-CME-001) is associated with an M1.8 flare from Active Region 14461 (S22E24) with ID 2026-06-06T13:40:00-FLR-001 which peaked at 2026-06-06T14:01Z. Ensemble CME modeling at M2M is performed by building sets of initial CME parameters and carrying out separate simulations for each set. This approach allows a mapping of initial CME parameter uncertainties into a statistical characterization of CME arrival times and impact at locations of interest. Description of links: For each location, the first link shows the WSA-ENLIL+Cone model animation for the median CME input parameters, the second link shows the probabilistic distribution of predicted arrival times histogram, and the third link shows a stack plot of the WSA-ENLIL+Cone modeled magnetic field, velocity, density, and temperature for all ensemble members. For missions near Earth, a histogram of the probabilistic Kp forecast is also provided. For the full details of the modeled event, please go here: https://iswa.gsfc.nasa.gov/ENSEMBLE/2026-06-06_ncmes1_sims36_M2M-SWAO085/Detailed_results_20260606_141100_ncmes1_sims36_M2M-SWAO085.txt ###

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-06-05T18:09:07Z ## Message ID: 20260605-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 6.33 (moderate) during the synoptic period 2026-06-05T15:00Z to 2026-06-05T18:00Z. The storm is caused by the Interplanetary Shock with ID 2026-06-05T04:23:00-IPS-001 (see notification 20260605-AL-001) and the arrival of CME with ID 2026-06-03T01:53:00-CME-001 (see notifications 20260603-AL-003, 20260603-AL-004, 20260603-AL-010, 20260603-AL-013, 20260603-AL-014), CME with ID 2026-06-03T07:23:00-CME-001 (see notifications 20260603-AL-009, 20260603-AL-013, 20260603-AL-014) and/or CME with ID 2026-06-03T11:48:00-CME-001 (see notification 20260603-AL-011, 20260603-AL-013, 20260603-AL-014). 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: 2026-06-05T15:00:00-GST-001. ## Notes:

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - X1.0 Flare ## ## Message Issue Date: 2026-06-03T11:49:00Z ## Message ID: 20260603-AL-008 ## ## 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 flare detected by GOES. Flare start time: 2026-06-03T11:19Z. Flare peak time: 2026-06-03T11:28Z. Flare intensity: X1.0 class. Source region: N14W16 (Active Region 14455) (based on SDO imagery). Increased energetic proton fluxes possible. Updates on this event will be provided when available. Activity ID: 2026-06-03T11:19:00-FLR-001. ## Notes:

Large, bright, loop CME first seen to the NE in SOHO LASCO C2 beginning at 2026-05-31T23:36Z. The source of this event is wide opening field lines seen originating from beyond the NE limb beginning at approx. 2026-05-31T22:57Z in SDO AIA 171, 193 and GOES SUVI 284.

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/HSS/46487/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - CME (Parker Solar Probe, Mars, Psyche) ## ## Message Issue Date: 2026-05-26T17:56:24Z ## Message ID: 20260526-AL-008 ## ## 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: 2026-05-26T02:12Z. Estimated speed: ~820 km/s. Estimated opening half-angle: 24 deg. Direction (lon./lat.): 119/33 in Heliocentric Earth Equatorial coordinates. Activity ID: 2026-05-26T02:12:00-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 Parker Solar Probe, Mars (minor impact), and Psyche (minor impact). The leading edge of the CME will reach Parker Solar Probe at 2026-05-27T02:24Z, Mars at 2026-05-29T08:00Z, and Psyche at 2026-05-29T06:00Z (plus minus 7 hours). Links to the movies of the modeled event (includes CME: 2026-05-26T02:12:00-CME-001): https://iswa.gsfc.nasa.gov/api/redirect?filename=20260526_064500_2.0_anim.tim-den.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260526_064500_2.0_anim.tim-vel.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260526_064500_2.0_ENLIL_CONE_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260526_064500_2.0_ENLIL_CONE_PSP_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260526_064500_2.0_ENLIL_CONE_Mars_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260526_064500_2.0_ENLIL_CONE_Psyche_timeline.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

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - SEP (STEREO A) ## ## Message Issue Date: 2026-05-26T11:35:49Z ## Message ID: 20260526-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: Solar energetic particle event detected by STEREO A. The flux of 13-100 MeV protons exceeded 10^(-1) pfu/MeV starting at 2026-05-26T04:07Z. NASA spacecraft at orbits near STEREO A can be impacted. Activity ID: 2026-05-26T04:07:00-SEP-001. ## Notes: This SEP event (2026-05-26T04:07:00-SEP-001) is associated with O-type CME with ID 2026-05-25T22:12:00-CME-001 (see notification 20260526-AL-002).

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - SEP (GOES) ## ## Message Issue Date: 2026-05-26T00:26:20Z ## Message ID: 20260526-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: Solar energetic particle event detected by GOES. The flux of > 10 MeV protons exceeds 10 pfu starting at 2026-05-26T00:15Z. NASA spacecraft at MEO, GEO and other high-altitude orbits and high-inclination LEO can be impacted. Activity ID: 2026-05-26T00:15:00-SEP-001. ## Notes: This SEP event (2026-05-26T00:15:00-SEP-001) is associated with O-Type CME with ID 2026-05-25T22:12:00-CME-001 (see notification 20260526-AL-002).

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/SEP/46371/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Continued Radiation Belt Enhancement ## ## Message Issue Date: 2026-05-24T14:24:00Z ## Message ID: 20260524-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: 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 2026-05-22T10:25Z. The elevated energetic electron flux levels observed since 2026-05-24T06:40Z (see notifications 20260516-AL-003, 20260516-AL-004, 20260518-AL-001, 20260520-AL-001, and 20260522-AL-002) are caused by the arrival of a coronal hole high speed stream which started on 2026-05-15, reaching maximum sustained speeds of approximately 740 km/s. The solar wind speed observed at L1 is currently around 330 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: 2026-05-16T15:20:00-RBE-001. ## Notes: This coronal hole high speed stream is also associated with interplanetary shock with ID 2026-05-15T07:14:00-IPS-001 (see notification 20260515-AL-001) and geomagnetic storm with ID 2026-05-15T21:00:00-GST-001 (see notifications 20260516-AL-001, 20260516-AL-002).

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - CME (Europa Clipper, OSIRIS-APEX, Missions Near Earth) ## ## Message Issue Date: 2026-05-16T18:38:46Z ## Message ID: 20260516-AL-006 ## ## 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 STEREO A / GOES / SOHO. Start time of the event: 2026-05-16T16:36Z. Estimated speed: ~1201 km/s. Estimated opening half-angle: 22 deg. Direction (lon./lat.): 9/37 in Heliocentric Earth Equatorial coordinates. Activity ID: 2026-05-16T16:36:00-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 this CME may affect Europa Clipper (glancing blow) and OSIRIS-APEX (glancing blow). The flank of the CME will reach Europa Clipper at 2026-05-20T21:00Z and OSIRIS-APEX at 2026-05-19T16:00Z (plus minus 7 hours). The simulation also indicates that the CME may have a glancing blow at NASA missions near Earth. Simulations indicate that the flank of the CME will reach NASA missions near Earth at about 2026-05-19T00:00Z (plus minus 7 hours). The roughly estimated expected range of the maximum Kp index is 3-5 (below minor to minor). Links to the movies of the modeled event (includes CME: 2026-05-16T16:36:00-CME-001): https://iswa.gsfc.nasa.gov/api/redirect?filename=20260516_192700_2.0_anim.tim-den.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260516_192700_2.0_anim.tim-vel.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260516_192700_2.0_ENLIL_CONE_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260516_192700_2.0_ENLIL_CONE_Osiris_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260516_192700_2.0_ENLIL_CONE_EuropaClippr_timeline.gif ## Notes: This CME event (2026-05-16T16:36:00-CME-001) is associated with M1.9 flare from AR 14436 (N22W17) with ID 2026-05-16T15:50:00-FLR-001 which peaked at 2026-05-16T16:12Z. 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

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Geomagnetic Storm ## ## Message Issue Date: 2026-05-16T00:10:22Z ## Message ID: 20260516-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 2026-05-15T21:00Z to 2026-05-16T00:00Z. The storm is caused by the coronal hole high speed stream starting on 2026-05-15. 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: 2026-05-15T21:00:00-GST-001. ## Notes: This event is associated with Interplanetary Shock with ID 2026-05-15T07:14:00-IPS-001 (see notification 20260515-AL-001).

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Interplanetary Shock ## ## Message Issue Date: 2026-05-15T13:48:30Z ## Message ID: 20260515-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: Significant interplanetary shock detected by ACE at L1 at 2026-05-15T07:14Z. The shock is likely caused by the arrival of a coronal hole high speed stream starting on 2026-05-15Z. Some magnetospheric compression likely and moderate geomagnetic storming possible. Activity ID: 2026-05-15T07:14:00-IPS-001. ## Notes:

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - M5.7 Flare ## ## Message Issue Date: 2026-05-10T13:57:29Z ## Message ID: 20260510-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: Significant flare detected by GOES. Flare start time: 2026-05-10T13:19Z. Flare peak time: 2026-05-10T13:39Z. Flare intensity: M5.7 class. Source region: N21E65 (Active Region 14436) (based on SDO imagery). Increased energetic proton fluxes possible. Updates on this event will be provided when available. Activity ID: 2026-05-10T13:19:00-FLR-001. ## Notes:

## 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/HSS/45933/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - M6.0 Flare ## ## Message Issue Date: 2026-04-26T23:11:53Z ## Message ID: 20260426-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: Significant flare detected by GOES. Flare start time: 2026-04-26T22:51Z. Flare peak time: 2026-04-26T22:57Z. Flare intensity: M6.0 class. Source region: N15W18 (Active Region 14420) (based on SDO imagery). Increased energetic proton fluxes possible. Updates on this event will be provided when available. Activity ID: none. ## Notes:

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - CME (STEREO A, Juice, Parker Solar Probe) ## ## Message Issue Date: 2026-04-25T01:18:32Z ## Message ID: 20260425-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 / SOHO. Start time of the event: 2026-04-24T19:30Z. Estimated speed: ~575 km/s. Estimated opening half-angle: 35 deg. Direction (lon./lat.): 78/37 in Heliocentric Earth Equatorial coordinates. Activity ID: 2026-04-24T19:30:00-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 STEREO A (minor impact), Juice (glancing blow), and Parker Solar Probe (glancing blow). The flank of the CME will reach STEREO A at 2026-04-27T12:00Z, Juice at 2026-04-29T04:00Z, and Parker Solar Probe at 2026-04-26T12:00Z (plus minus 7 hours). Links to the movies of the modeled event (includes CME: 2026-04-24T19:30:00-CME-001): https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_anim.tim-den.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_anim.tim-vel.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_anim.tim-vel-Stereo_A.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_anim.tim-den-Stereo_A.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_ENLIL_CONE_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_ENLIL_CONE_STA_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_ENLIL_CONE_PSP_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260425_014600_2.0_ENLIL_CONE_Juice_timeline.gif ## Notes: This CME event (2026-04-24T19:30:00-CME-001) is associated with M6.4 flare from Active Region 14419 (N15W78) with ID 2026-04-24T17:54:00-FLR-001 which peaked at 2026-04-24T18:15Z (see notifications 20260424-AL-008 and 20260424-AL-009). 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

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - Continued Radiation Belt Enhancement ## ## Message Issue Date: 2026-04-23T18:50:49Z ## Message ID: 20260423-AL-006 ## ## 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 2026-04-23T13:15Z. The elevated energetic electron flux levels observed since 2026-04-19T14:00Z are caused by a coronal hole high speed stream starting on 2026-04-18, reaching maximum sustained speeds of approximately 570 km/s. The solar wind speed observed at L1 is currently around 430 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: 2026-04-19T14:00:00-RBE-001. ## Notes: This coronal hole high speed stream is also associated with the moderate geomagnetic storm with ID 2026-04-18T06:00:00-GST-001 (see notifications 20260418-AL-001, 20260418-AL-002, 20260419-AL-001).