Space Weather Events
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Research information from NASA DONKI, not an operational space weather warning service.
Showing 1–20 of 113 records
Interplanetary shock — 2026-09-14 09:24 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- Earth
Interplanetary shock — 2026-09-15 11:28 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- Earth
Interplanetary shock — 2026-09-17 01:24 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- Earth
Interplanetary shock — 2026-09-17 15:10 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- STEREO A
Coronal mass ejection — 2026-09-14 11:08 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S11W38
- CME speed (most accurate analysis)
- 897 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-14 11:08 UTC (opens in a new tab)Coronal mass ejection — 2026-09-19 18:48 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N14E90
- CME speed (most accurate analysis)
- 321 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-19 18:48 UTC (opens in a new tab)Solar flare — 2026-09-19 17:57 UTC (C3.3)
Class C3.3
- Event type
- Solar flare
- Date
- Peak (UTC)
- End (UTC)
- Flare class
- C3.3
- Source location / observed at
- N14E90
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.
View on DONKI for Solar flare — 2026-09-19 17:57 UTC (C3.3) (opens in a new tab)Interplanetary shock — 2026-09-21 00:33 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- STEREO A
Interplanetary shock — 2026-09-23 15:30 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- Earth
Interplanetary shock — 2026-09-28 08:32 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- STEREO A
Coronal mass ejection — 2026-09-30 03:12 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N11W48
- CME speed (most accurate analysis)
- 488 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-30 03:12 UTC (opens in a new tab)Interplanetary shock — 2026-10-03 01:26 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- Earth
Solar flare — 2026-09-30 02:30 UTC (C8.6)
Class C8.6
- Event type
- Solar flare
- Date
- Peak (UTC)
- End (UTC)
- Flare class
- C8.6
- Source location / observed at
- N11W48
Geomagnetic storm — 2026-10-04 18:00 UTC
- Event type
- Geomagnetic storm
- Date
- Kp index values (as observed)
- Kp 5.67 at 2026-10-04 21:00Z (NOAA)
Interplanetary shock — 2026-10-03 23:41 UTC
- Event type
- Interplanetary shock
- Date
- Source location / observed at
- Earth
Coronal mass ejection — 2026-10-04 07:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S20W62
- CME speed (most accurate analysis)
- 336 km/s
Faint CME observed to the SW in SOHO LASCO C2, poorly observed in LASCO C3 and GOES CCOR-1, and not in STEREO A COR2; mostly overlapped with following CME: 2026-10-04T07:36Z. The source is likely the first of two paired…
View on DONKI for Coronal mass ejection — 2026-10-04 07:24 UTC (opens in a new tab)Coronal mass ejection — 2026-10-04 07:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S19W62
- CME speed (most accurate analysis)
- 313 km/s
Faint CME observed to the SW in SOHO LASCO C2, poorly observed in LASCO C3 and GOES CCOR-1, and not in STEREO A COR2; mostly overlapped with preceeding CME: 2026-10-04T07:24Z. The source is likely the second of two…
View on DONKI for Coronal mass ejection — 2026-10-04 07:36 UTC (opens in a new tab)Solar flare — 2026-10-04 06:13 UTC (B3.2)
Class B3.2
- Event type
- Solar flare
- Date
- Peak (UTC)
- End (UTC)
- Flare class
- B3.2
- Source location / observed at
- S20W62
First in pair of eruptive flares from AR 14546, followed immediately by a B9.3 class flare peaking at 2026-10-04T06:30Z. These two flares are in close succession, but visually separable in SDO AIA 131 and in their…
View on DONKI for Solar flare — 2026-10-04 06:13 UTC (B3.2) (opens in a new tab)Solar flare — 2026-10-04 06:21 UTC (B9.3)
Class B9.3
- Event type
- Solar flare
- Date
- Peak (UTC)
- End (UTC)
- Flare class
- B9.3
- Source location / observed at
- S19W62
Second in pair of eruptive flares from AR 14546, directly preceeded by a B3.2 class flare peaking at 2026-10-04T06:19Z. These two flares are in close succession, but visually separable in SDO AIA 131 and in their…
View on DONKI for Solar flare — 2026-10-04 06:21 UTC (B9.3) (opens in a new tab)Coronal mass ejection — 2026-10-06 06:23 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N10E12
- CME speed (most accurate analysis)
- 573 km/s
Full halo CME in SOHO LASCO C2/C3 and GOES CCOR-1, first seen to the NE in STEREO A COR2 (shock fully to the E, wide). The source is AR 14549, associated with an M1.4 flare (N10E12) peaking at 2026-10-06T06:10Z…
View on DONKI for Coronal mass ejection — 2026-10-06 06:23 UTC (opens in a new tab)
About this data
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Coverage of this source
- 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: 12 Oct 2026, 23:18 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.
- Observations, analyses (a CME can have several, with the one DONKI marks most accurate), model predictions (WSA-ENLIL) and notifications are shown as such, in their original units and classifications. No combined severity score is computed.
- Times are UTC as supplied. DONKI revises entries; the look-back window is re-read on every refresh.