Space Weather Events
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Research information from NASA DONKI, not an operational space weather warning service.
Showing 21–40 of 115 records
| Name↕, sortable; sort Name, A to Z | Event type↕, sortable; sort Event type, A to Z | Date↕, sortable; sort Date, earliest first | Flare class↕, sortable; sort Flare class, A to Z | CME speed↕, sortable; sort CME speed (most accurate analysis), lowest first | CME analyses↕, sortable; sort CME analyses, lowest first | Linked events▼, sorted descending; sort Linked events, A to Z | Instruments↕, sortable; sort Instruments, A to Z | Summary↕, sortable; sort Summary, A to Z |
|---|---|---|---|---|---|---|---|---|
| Geomagnetic storm — 2026-10-04 18:00 UTC | Geomagnetic storm | — | — | — | 2026-10-03T23:40:00-HSS-001, 2026-10-03T23:41:00-IPS-001 | — | — | |
| Interplanetary shock — 2026-10-03 23:41 UTC | Interplanetary shock | — | — | — | 2026-10-03T23:40:00-HSS-001, 2026-10-04T07:26:00-MPC-001, 2026-10-04T18:00:00-GST-001 | ACE: SWEPAM, ACE: MAG, SOLAR-1: MAG, SOLAR-1: SWiPS, IMAP: MAG, IMAP: SWAPI | — | |
| Interplanetary shock — 2026-10-03 01:26 UTC | Interplanetary shock | — | — | — | 2026-09-30T03:12:00-CME-001 | SOLAR-1: MAG, ACE: SWEPAM, ACE: MAG, SOLAR-1: SWiPS, IMAP: MAG, IMAP: SWAPI | — | |
| Solar flare — 2026-09-30 02:30 UTC (C8.6) | Solar flare | C8.6 | — | — | 2026-09-30T03:12:00-CME-001 | GOES-P: EXIS 1.0-8.0 | — | |
| Coronal mass ejection — 2026-09-30 03:12 UTC | Coronal mass ejection | — | 488 km/s | 1 | 2026-09-30T02:30:00-FLR-001, 2026-10-03T01:26:00-IPS-001 | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | CME first seen to the West by SOHO LASCO C2 beginning at 2026-09-30T03:12Z, as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1. The source of this event is a C8.6 flare from Active Region 14535 (N11W48) seen peaking at 2026-09-30T02:46Z. This flare can be seen clearly in SDO AIA 131, along with field line opening, dimming and an EUV wave seen in SDO AIA 171/193/211, GOES SUVI 284 and STEREO A EUVI 195. | |
| Interplanetary shock — 2026-09-28 08:32 UTC | Interplanetary shock | — | — | — | 2026-09-29T00:34:00-HSS-001 | STEREO A: IMPACT, STEREO A: PLASTIC | — | |
| Interplanetary shock — 2026-09-23 15:30 UTC | Interplanetary shock | — | — | — | 2026-09-24T08:09:00-HSS-001 | SOLAR-1: MAG, ACE: SWEPAM, ACE: MAG, SOLAR-1: SWiPS, IMAP: MAG, IMAP: SWAPI | — | |
| Interplanetary shock — 2026-09-21 00:33 UTC | Interplanetary shock | — | — | — | 2026-09-21T12:15:00-HSS-001 | STEREO A: IMPACT, STEREO A: PLASTIC | — | |
| Solar flare — 2026-09-19 17:57 UTC (C3.3) | Solar flare | C3.3 | — | — | 2026-09-19T18:48:00-CME-001 | GOES-P: EXIS 1.0-8.0 | The flare was produce by the unnumbered Active Region just behind the limb. This is likely the Active Region that would be numbered AR 14535. | |
| Coronal mass ejection — 2026-09-19 18:48 UTC | Coronal mass ejection | — | 321 km/s | 1 | 2026-09-19T17:57:00-FLR-001 | SOHO: LASCO/C2 | Faint, minor CME with an unclear front seen to the E-NE in SOHO LASCO C2. Not seen in other coronagraphs. Its source is the long duration C3.3 class flare from unnumbered AR rotating onto disk (N14E90) peaking at 2026-09-19T18:17Z. There is also an associated opening of field lines on/behind the E limb seen in SDO AIA 193 and a minor prominence/ejecta seen in SDO AIA 304/171 starting after 2026-09-19T18:10Z. The initial front is followed by a series of outflows. | |
| Coronal mass ejection — 2026-09-14 11:08 UTC | Coronal mass ejection | — | 897 km/s | 2 | 2026-09-17T01:24:00-IPS-001, 2026-09-17T15:10:00-IPS-001 | STEREO A: SECCHI/COR2, GOES: CCOR-1 | CME first seen to the E in STEREO A COR2 starting at 2026-09-14T11:08Z. It is also seen to the W in GOES CCOR-1. This CME is covered by a data gap in SOHO LASCO C2/C3 in real time. The source of this CME is an eruption centered around AR 14528 (S11W38) best seen in GOES SUVI 284 beginning around 2026-09-14T10:00Z. Field line movement can be seen accompanied by brightening and ejecta. Post-eruptive arcades can also be seen in SDO AIA 193. There seems to be a northwestward deflection from the location of the source. There are two large coronal holes (a northern and a southern one) nearby, possibly responsible for this deflection. | |
| Interplanetary shock — 2026-09-17 15:10 UTC | Interplanetary shock | — | — | — | 2026-09-14T11:08:00-CME-001 | STEREO A: IMPACT, STEREO A: PLASTIC | — | |
| Interplanetary shock — 2026-09-17 01:24 UTC | Interplanetary shock | — | — | — | 2026-09-13T21:12:00-CME-001, 2026-09-14T11:08:00-CME-001 | SOLAR-1: MAG, ACE: SWEPAM, ACE: MAG, SOLAR-1: SWiPS, IMAP: MAG, IMAP: SWAPI | — | |
| Interplanetary shock — 2026-09-15 11:28 UTC | Interplanetary shock | — | — | — | 2026-09-13T19:48:00-CME-001 | SOLAR-1: SWiPS, ACE: SWEPAM, ACE: MAG, SOLAR-1: MAG, IMAP: MAG, IMAP: SWAPI | — | |
| Interplanetary shock — 2026-09-14 09:24 UTC | Interplanetary shock | — | — | — | 2026-09-09T16:00:00-CME-001 | SOLAR-1: MAG, ACE: SWEPAM, ACE: MAG, SOLAR-1: SWiPS, IMAP: MAG, IMAP: SWAPI | — | |
| Coronal mass ejection — 2026-09-14 17:24 UTC | Coronal mass ejection | — | 461 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | CME observed to the NW in SOHO LASCO C2/C3 and GOES CCOR-1, likely not observed in STEREO A COR2 either due to faintness or a data gap starting at 2026-09-14T18:53Z before it becomes visible. The source is far-sided over the NW limb, observed in SDO AIA 171/193 starting around 2026-09-17T15:48Z as slow, wide field line movement. More directly observed in STEREO A EUVI 195/304 starting as early as 2026-09-14T14:55Z, as brightening and dimming centered around an estimated N30W115 in the NW disk near former Active Regions 14523 and 14521. | |
| Coronal mass ejection — 2026-09-15 08:36 UTC | Coronal mass ejection | — | 395 km/s | 1 | — | SOHO: LASCO/C2 | Very faint CME with an unclear front seen to the NE in early images of SOHO LASCO C2 only. It is not seen in SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1, likely because of its faintness. No source for this feature has been found in EUV imagery. | |
| Coronal mass ejection — 2026-09-18 03:24 UTC | Coronal mass ejection | — | 371 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | CME visible to the NE in SOHO LASCO C2/C3. The CME is also faintly visible to the NE in GOES CCOR-1 following a data gap due to Earthshine from 2026-09-18T03:45Z to 2026-09-18T06:10Z. The CME is not visible in STEREO A COR2 imagery. The source is beyond the NE limb and is seen as moving field lines starting at 2026-09-18T02:35Z in GOES SUVI 284 and SDO AIA 171/193 imagery. | |
| Coronal mass ejection — 2026-09-19 16:38 UTC | Coronal mass ejection | — | 729 km/s | 1 | — | SOHO: LASCO/C2, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Faint, narrow CME seen to the SW in SOHO LASCO C2 and STEREO A COR2 and very faintly seen in a couple of frames of GOES CCOR-1 coronagraph imagery. The CME is not seen in SOHO LASCO C3. Its source is likely seen in STEREO A EUV 304 imagery as a large ejecta off the W limb after 2026-09-19T15Z and not seen in any other EUV imagery. The ejecta is not clearly visible, and it's exact location/longitude is unclear, but it seems to be close to the limb (which would be ~159 deg). | |
| Coronal mass ejection — 2026-09-19 22:12 UTC | Coronal mass ejection | — | 331 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | CME observed to the NW in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2. The source is a far-sided filament eruption over the NW limb, observed best in GOES 284/304 starting around 2026-09-19T21:22Z. When STEREO A EUVI 304/195 return from a data gap at 2026-09-20T00:15Z and 2026-09-20T00:25 respectively, dimming and post eruptive brightening can be seen in the NW disk, likely left behind by this filament eruption. |
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- NASA DONKI — Space Weather Events: DONKI events in the look-back window (30 days by default), re-read every hour; older entries remain from earlier refreshes or an optional backfill.
NASA DONKI — Space Weather Events
Source: Data: NASA Community Coordinated Modeling Center (CCMC), DONKI; analyses by the Moon to Mars Space Weather Analysis Office. Last successful refresh: 14 Oct 2026, 03:58 EDT.
- DONKI information is supplied for research and analysis. It is not an operational emergency-warning service: NOAA's Space Weather Prediction Center (swpc.noaa.gov) is the official US source of space weather forecasts and warnings.
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