Space Weather Events
Last checked 47 minutes ago.
Research information from NASA DONKI, not an operational space weather warning service.
Showing 1–20 of 113 records
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)
Geomagnetic storm — 2026-10-10 15:00 UTC
- Event type
- Geomagnetic storm
- Date
- Kp index values (as observed)
- Kp 7 at 2026-10-10 18:00Z (NOAA); Kp 6.67 at 2026-10-10 21:00Z (NOAA)
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 — 2026-09-14 17:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 461 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-14 17:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-15 08:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 395 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-15 08:36 UTC (opens in a new tab)Coronal mass ejection — 2026-09-18 03:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 371 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-18 03:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-19 16:38 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 729 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-19 16:38 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)Coronal mass ejection — 2026-09-19 22:12 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 331 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-19 22:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-19 22:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 341 km/s
CME observed brightly to the SW in STEREO A COR2, and very faintly to the SE in SOHO LASCO C2/C3 and GOES CCOR-1. No source is seen in on-disk EUV imagery for this event, and is likely far-sided.
View on DONKI for Coronal mass ejection — 2026-09-19 22:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 03:00 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 273 km/s
Faint CME observed to the NE in SOHO LASCO C2/C3 and GOES CCOR-1, better seen the further into the field-of-view it travels than early C2. No definitive EUV source is observed, and may be far-sided or outflow following…
View on DONKI for Coronal mass ejection — 2026-09-20 03:00 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 05:12 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 593 km/s
Faint CME observed to the NW in SOHO LASCO C2/C3 and GOES CCOR-1, not observed in STEREO A COR2. No distinct source is observed for this CME, but could be related to field line movement over the NW limb starting as…
View on DONKI for Coronal mass ejection — 2026-09-20 05:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 12:23 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 427 km/s
Faint CME observed to the W only in STEREO A COR2. No distinct source is observed in available EUV imagery.
View on DONKI for Coronal mass ejection — 2026-09-20 12:23 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 20:12 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 277 km/s
Faint CME observed to the NW in SOHO LASCO C2/C3. The CME is not visible in STEREO A COR2 (may be too faint) or GOES CCOR-1 (likely pylon obscured). No distinct EUV source is observed for this CME.
View on DONKI for Coronal mass ejection — 2026-09-20 20:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 22:38 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 318 km/s
Faint CME observed to the NW in STEREO A COR2 and SOHO LASCO C2/C3, not in GOES CCOR-1 as it is likely obscured by the pylon. The only potential source is a slow brightening on the NW disk of STEREO A EUVI 195 starting…
View on DONKI for Coronal mass ejection — 2026-09-20 22:38 UTC (opens in a new tab)Coronal mass ejection — 2026-09-21 09:09 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 347 km/s
Faint CME observed to the NW in STEREO A COR2 and SOHO LASCO C2/C3, largely blocked by the pylon in GOES CCOR-1. The source is unclear, with a potential far-sided source on the STEREO A EUVI 195/304 west limb observed…
View on DONKI for Coronal mass ejection — 2026-09-21 09:09 UTC (opens in a new tab)Coronal mass ejection — 2026-09-24 02:53 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N03W32
- CME speed (most accurate analysis)
- 500 km/s
CME observed to the E only in STEREO A COR2, likely not seen in other coronagraphs due to the occulting disk and/or faint leading edge. The start time of 2026-09-24T02:53Z in white light is later than the first…
View on DONKI for Coronal mass ejection — 2026-09-24 02:53 UTC (opens in a new tab)Coronal mass ejection — 2026-09-24 09:23 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 618 km/s
Faint CME observed to the SW only in STEREO A COR2, may be due to faintness or the occulting disk in other coronagraphs. No EUV source is observed for this front.
View on DONKI for Coronal mass ejection — 2026-09-24 09:23 UTC (opens in a new tab)Coronal mass ejection — 2026-09-24 14:45 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S35W70
- CME speed (most accurate analysis)
- 493 km/s
CME observed to the SW in GOES CCOR-1 and S in STEREO A COR2, overlapping with a slow, wide streamer blowout beginning ~2026-09-23T20:12Z (itself measuring ~176 km/s). Not observed in SOHO LASCO C2/C3 due to a real-time…
View on DONKI for Coronal mass ejection — 2026-09-24 14:45 UTC (opens in a new tab)Coronal mass ejection — 2026-09-25 11:09 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 797 km/s
CME visible to the NE in SOHO LASCO C2/C3 and GOES CCOR-1. The CME is also visible to the NW in STEREO A COR2. The source is farsided, and is best seen as rapidly opening field lines beyond the west limb in STEREO A EUV…
View on DONKI for Coronal mass ejection — 2026-09-25 11:09 UTC (opens in a new tab)
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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: 13 Oct 2026, 06:19 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.