NASA StreaM

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - CME (Parker Solar Probe) ## ## Message Issue Date: 2026-05-22T13:51:46Z ## Message ID: 20260522-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 STEREO A / GOES / SOHO. Start time of the event: 2026-05-22T10:48Z. Estimated speed: ~594 km/s. Estimated opening half-angle: 28 deg. Direction (lon./lat.): 95/35 in Heliocentric Earth Equatorial coordinates. Activity ID: 2026-05-22T10:48:00-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. The leading edge of the CME will reach Parker Solar Probe at 2026-05-23T18:09Z (plus minus 7 hours). Links to the movies of the modeled event (includes CME: 2026-05-22T10:48:00-CME-001): https://iswa.gsfc.nasa.gov/api/redirect?filename=20260522_171100_2.0_anim.tim-den.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260522_171100_2.0_anim.tim-vel.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260522_171100_2.0_ENLIL_CONE_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260522_171100_2.0_ENLIL_CONE_PSP_timeline.gif ## Notes: This CME event (2026-05-22T10:48:00-CME-001) is associated with M2.3 flare with ID 2026-05-22T10:03:00-FLR-001 from Active Region 14436 (N18W96) which peaked at 2026-05-22T10:29Z. 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: Weekly Space Weather Summary Report for May 13, 2026 - May 19, 2026 ## ## Message Issue Date: 2026-05-20T19:56:50Z ## Report Coverage Begin Date: 2026-05-13T00:00Z ## Report Coverage End Date: 2026-05-19T23:59Z ## Message ID: 20260520-7D-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 moderate levels during this reporting period with 4 M-class flares, 1 O-type CME, and 10 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 missions near Earth: CME Starting time | Predicted Impacts (plus minus 7 hours) ----------------------------------------------------------------------------- 2026-05-16T16:36Z NASA missions near Earth at 2026-05-19T00:00Z (glancing blow), Kp index 3-5 (below minor to minor) (see notification 20260516-AL-006). The arrival of this CME was likely detected at L1 around 2026-05-19T06:31Z. It was also estimated that the following CMEs were predicted to impact the listed locations: CME Starting time | Predicted Impacts (plus minus 7 hours) ----------------------------------------------------------------------------- 2026-05-13T22:24Z Parker Solar Probe at 2026-05-15T19:33Z, Juice at 2026-05-19T22:00Z (glancing blow), Mars at 2026-05-18T22:00Z (glancing blow), Psyche at 2026-05-18T22:00Z (glancing blow), and STEREO A at 2026-05-17T10:00Z (glancing blow) (see notification 20260514-AL-001). 2026-05-16T08:09Z Mars at 2026-05-20T08:00Z (glancing blow), Psyche at 2026-05-20T06:00Z (glancing blow), and Solar Orbiter at 2026-05-20T00:00Z (glancing blow) (see notification 20260516-AL-005). 2026-05-16T16:36Z Europa Clipper at 2026-05-20T21:00Z (glancing blow) and OSIRIS-APEX at 2026-05-19T16:00Z (glancing blow) (see notification 20260516-AL-006). The highest value of Kp = 6.33 occurred during the synoptic period 2026-05-15T21:00Z to 2026-05-16T00:00Z (see notifications 20260516-AL-001, 20260516-AL-002). This enhancement in geomagnetic activity was associated with the interplanetary shock detected at L1 by ACE and DSCOVR at 2026-05-15T07:14Z (see notification 20260515-AL-001) which was associated with the arrival of the coronal hole high speed stream detected by ACE and DSCOVR at L1 on 2026-05-15. The > 2.0 MeV energetic electron flux in the Earth's outer radiation belt crossed the threshold level of 1000 pfu starting at 2026-05-16T15:20Z (see notifications 20260516-AL-003, 20260516-AL-004, 20260518-AL-001). This elevation of energetic electron flux levels was likely associated with the arrival of a coronal hole high speed stream detected at L1 by ACE and DSCOVR on 2026-05-15. 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 2026-05-16 15:50:00 16:22:00 16:12:00 M1.9 N22W17 ( 14436 ) 2026-05-16 16:22:00 16:34:00 16:29:00 M1.3 N18W15 ( 14436 ) 2026-05-16 17:39:00 17:44:00 17:42:00 M1.9 N21W90 ( 14435 ) 2026-05-17 03:29:00 03:42:00 03:39:00 M1.4 N22W97 ( 14435 ) CMEs (>500 km/s): Earth directed: Starting time Speed (km/s) Type Direction (LON/LAT in HEEQ) Half-Angle width (degrees) Detecting spacecraft (real-time) 2026-05-16T16:36Z ~1201 O 9/37 22 SOHO, STEREO A, GOES 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) 2026-05-13T03:12Z ~736 C 102/-31 11 SOHO, STEREO A, GOES 2026-05-13T22:24Z ~519 C 87/26 34 SOHO, STEREO A, GOES 2026-05-14T20:12Z ~501 C -20/34 15 SOHO 2026-05-15T02:00Z ~522 C 49/-46 23 SOHO, STEREO A 2026-05-15T14:24Z ~564 C -75/17 29 SOHO, STEREO A, GOES 2026-05-16T05:00Z ~503 C 90/44 21 SOHO, STEREO A, GOES 2026-05-16T08:09Z ~548 C 175/2 40 STEREO A 2026-05-17T10:24Z ~508 C -40/37 10 SOHO, STEREO A 2026-05-18T22:00Z ~594 C NONE(POS)/3 10 SOHO, GOES 2026-05-19T11:01Z ~564 C -26/32 20 SOHO, STEREO A ## Space Weather Outlook: ## Outlook Coverage Begin Date: 2026-05-20T00:00Z ## Outlook Coverage End Date: 2026-05-26T23:59Z Solar activity is expected to be at low to moderate levels during the outlook period. There are currently four numbered Active Regions on the Earth-facing disk. Active Region 14436 (N18W72) produced M-class flaring during the reporting period and may produce similar levels of flaring activity during the outlook period. Geomagnetic activity is expected to be at low levels during the outlook period. A southern coronal hole started crossing the central meridian on 2026-05-20 (as seen in available imagery from SDO/AIA 193) and may reach geoeffective longitudes on or around 2026-05-23. ## 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

Faint but fast CME with a dimpled, unclear front seen to the E in SOHO LASCO C2/C3 and GOES CCOR-1 coronagraphs but fully covered by the night-time data gap in STEREO A COR2. The source of it is clearly far-sided, as indicated by a minor but clear movement/opening of field lines seen behind the E limb only in GOES SUVI 195 starting at 2026-05-18T21:05Z.

## 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

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/HSS/46175/-1

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/RBE/46199/-1

## 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).

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 - 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 - Interplanetary Shock ## ## Message Issue Date: 2026-05-07T15:54:56Z ## Message ID: 20260507-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 interplanetary shock detected by ACE at L1 at 2026-05-07T15:16Z. The shock may be associated with the arrival of a coronal hole high speed stream on 2026-05-07. Some magnetospheric compression likely and geomagnetic storm possible. Activity ID: 2026-05-07T15:16:00-IPS-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/GST/45981/-1

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI ) ## Message Type: Space Weather Notification - CME (Parker Solar Probe, STEREO A) ## ## Message Issue Date: 2026-05-02T16:39:43Z ## Message ID: 20260502-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 STEREO A / GOES / SOHO. Start time of the event: 2026-05-02T11:24Z. Estimated speed: ~603 km/s. Estimated opening half-angle: 20 deg. Direction (lon./lat.): 92/16 in Heliocentric Earth Equatorial coordinates. Activity ID: 2026-05-02T11:24:00-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 and STEREO A (glancing blow). The leading edge of the CME will reach Parker Solar Probe at 2026-05-04T16:21Z (plus minus 7 hours). The flank of the CME may reach STEREO A at 2026-05-06T00:00Z (plus minus 7 hours). Links to the movies of the modeled event (includes CME: 2026-05-02T11:24:00-CME-001): https://iswa.gsfc.nasa.gov/api/redirect?filename=20260502_171800_2.0_anim.tim-den.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260502_171800_2.0_anim.tim-vel.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260502_171800_2.0_anim.tim-vel-Stereo_A.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260502_171800_2.0_anim.tim-den-Stereo_A.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260502_171800_2.0_ENLIL_CONE_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260502_171800_2.0_ENLIL_CONE_STA_timeline.gif https://iswa.gsfc.nasa.gov/api/redirect?filename=20260502_171800_2.0_ENLIL_CONE_PSP_timeline.gif ## Notes: This CME event (2026-05-02T11:24:00-CME-001) is associated with C4.0 flare with ID 2026-05-02T10:44:00-FLR-001 which peaked at 2026-05-02T11:04Z. 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

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).

https://webtools.ccmc.gsfc.nasa.gov/DONKI/view/RBE/45741/-1